diff --git a/.github/VOUCHED.td b/.github/VOUCHED.td
index 589002d084..6c9a4502f6 100644
--- a/.github/VOUCHED.td
+++ b/.github/VOUCHED.td
@@ -12,8 +12,10 @@ adamdotdevin
 ariane-emory
 -atharvau AI review spamming literally every PR
 -borealbytes
+-carycooper777
 -danieljoshuanazareth
 -danieljoshuanazareth
+-davidbernat looks to be a clawdbot that spams team and sends super weird emails, doesnt appear to be a real person
 edemaine
 -florianleibert
 fwang
@@ -33,4 +35,3 @@ simonklee
 -spider-yamet clawdbot/llm psychosis, spam pinging the team
 thdxr
 -toastythebot
--davidbernat looks to be a clawdbot that spams team and sends super weird emails, doesnt appear to be a real person
diff --git a/bun.lock b/bun.lock
index c5eff531f3..49393ec9a8 100644
--- a/bun.lock
+++ b/bun.lock
@@ -29,7 +29,7 @@
     },
     "packages/app": {
       "name": "@opencode-ai/app",
-      "version": "1.14.26",
+      "version": "1.14.27",
       "dependencies": {
         "@kobalte/core": "catalog:",
         "@opencode-ai/core": "workspace:*",
@@ -83,7 +83,7 @@
     },
     "packages/console/app": {
       "name": "@opencode-ai/console-app",
-      "version": "1.14.26",
+      "version": "1.14.27",
       "dependencies": {
         "@cloudflare/vite-plugin": "1.15.2",
         "@ibm/plex": "6.4.1",
@@ -117,7 +117,7 @@
     },
     "packages/console/core": {
       "name": "@opencode-ai/console-core",
-      "version": "1.14.26",
+      "version": "1.14.27",
       "dependencies": {
         "@aws-sdk/client-sts": "3.782.0",
         "@jsx-email/render": "1.1.1",
@@ -144,7 +144,7 @@
     },
     "packages/console/function": {
       "name": "@opencode-ai/console-function",
-      "version": "1.14.26",
+      "version": "1.14.27",
       "dependencies": {
         "@ai-sdk/anthropic": "3.0.64",
         "@ai-sdk/openai": "3.0.48",
@@ -168,7 +168,7 @@
     },
     "packages/console/mail": {
       "name": "@opencode-ai/console-mail",
-      "version": "1.14.26",
+      "version": "1.14.27",
       "dependencies": {
         "@jsx-email/all": "2.2.3",
         "@jsx-email/cli": "1.4.3",
@@ -192,7 +192,7 @@
     },
     "packages/core": {
       "name": "@opencode-ai/core",
-      "version": "1.14.26",
+      "version": "1.14.27",
       "bin": {
         "opencode": "./bin/opencode",
       },
@@ -226,7 +226,7 @@
     },
     "packages/desktop": {
       "name": "@opencode-ai/desktop",
-      "version": "1.14.26",
+      "version": "1.14.27",
       "dependencies": {
         "@opencode-ai/app": "workspace:*",
         "@opencode-ai/ui": "workspace:*",
@@ -259,7 +259,7 @@
     },
     "packages/desktop-electron": {
       "name": "@opencode-ai/desktop-electron",
-      "version": "1.14.26",
+      "version": "1.14.27",
       "dependencies": {
         "drizzle-orm": "catalog:",
         "effect": "catalog:",
@@ -303,7 +303,7 @@
     },
     "packages/enterprise": {
       "name": "@opencode-ai/enterprise",
-      "version": "1.14.26",
+      "version": "1.14.27",
       "dependencies": {
         "@opencode-ai/core": "workspace:*",
         "@opencode-ai/ui": "workspace:*",
@@ -332,7 +332,7 @@
     },
     "packages/function": {
       "name": "@opencode-ai/function",
-      "version": "1.14.26",
+      "version": "1.14.27",
       "dependencies": {
         "@octokit/auth-app": "8.0.1",
         "@octokit/rest": "catalog:",
@@ -348,7 +348,7 @@
     },
     "packages/opencode": {
       "name": "opencode",
-      "version": "1.14.26",
+      "version": "1.14.27",
       "bin": {
         "opencode": "./bin/opencode",
       },
@@ -491,7 +491,7 @@
     },
     "packages/plugin": {
       "name": "@opencode-ai/plugin",
-      "version": "1.14.26",
+      "version": "1.14.27",
       "dependencies": {
         "@opencode-ai/sdk": "workspace:*",
         "effect": "catalog:",
@@ -506,8 +506,8 @@
         "typescript": "catalog:",
       },
       "peerDependencies": {
-        "@opentui/core": ">=0.1.104",
-        "@opentui/solid": ">=0.1.104",
+        "@opentui/core": ">=0.1.105",
+        "@opentui/solid": ">=0.1.105",
       },
       "optionalPeers": [
         "@opentui/core",
@@ -526,7 +526,7 @@
     },
     "packages/sdk/js": {
       "name": "@opencode-ai/sdk",
-      "version": "1.14.26",
+      "version": "1.14.27",
       "dependencies": {
         "cross-spawn": "catalog:",
       },
@@ -541,7 +541,7 @@
     },
     "packages/slack": {
       "name": "@opencode-ai/slack",
-      "version": "1.14.26",
+      "version": "1.14.27",
       "dependencies": {
         "@opencode-ai/sdk": "workspace:*",
         "@slack/bolt": "^3.17.1",
@@ -576,7 +576,7 @@
     },
     "packages/ui": {
       "name": "@opencode-ai/ui",
-      "version": "1.14.26",
+      "version": "1.14.27",
       "dependencies": {
         "@kobalte/core": "catalog:",
         "@opencode-ai/core": "workspace:*",
@@ -625,7 +625,7 @@
     },
     "packages/web": {
       "name": "@opencode-ai/web",
-      "version": "1.14.26",
+      "version": "1.14.27",
       "dependencies": {
         "@astrojs/cloudflare": "12.6.3",
         "@astrojs/markdown-remark": "6.3.1",
@@ -685,8 +685,8 @@
     "@npmcli/arborist": "9.4.0",
     "@octokit/rest": "22.0.0",
     "@openauthjs/openauth": "0.0.0-20250322224806",
-    "@opentui/core": "0.1.104",
-    "@opentui/solid": "0.1.104",
+    "@opentui/core": "0.1.105",
+    "@opentui/solid": "0.1.105",
     "@pierre/diffs": "1.1.0-beta.18",
     "@playwright/test": "1.59.1",
     "@solid-primitives/storage": "4.3.3",
@@ -1613,21 +1613,21 @@
 
     "@opentelemetry/semantic-conventions": ["@opentelemetry/semantic-conventions@1.40.0", "", {}, "sha512-cifvXDhcqMwwTlTK04GBNeIe7yyo28Mfby85QXFe1Yk8nmi36Ab/5UQwptOx84SsoGNRg+EVSjwzfSZMy6pmlw=="],
 
-    "@opentui/core": ["@opentui/core@0.1.104", "", { "dependencies": { "bun-ffi-structs": "0.1.2", "diff": "8.0.2", "jimp": "1.6.0", "marked": "17.0.1", "yoga-layout": "3.2.1" }, "optionalDependencies": { "@dimforge/rapier2d-simd-compat": "^0.17.3", "@opentui/core-darwin-arm64": "0.1.104", "@opentui/core-darwin-x64": "0.1.104", "@opentui/core-linux-arm64": "0.1.104", "@opentui/core-linux-x64": "0.1.104", "@opentui/core-win32-arm64": "0.1.104", "@opentui/core-win32-x64": "0.1.104", "bun-webgpu": "0.1.5", "planck": "^1.4.2", "three": "0.177.0" }, "peerDependencies": { "web-tree-sitter": "0.25.10" } }, "sha512-29RZ+f7sw5B6ebDFRuhrDs2UOV7vR76npr0vVRAJAmIMtdLb4Dse35Y0Hk6WerFKNuX4ajlQK4eO3oAY/29KLQ=="],
+    "@opentui/core": ["@opentui/core@0.1.105", "", { "dependencies": { "bun-ffi-structs": "0.1.2", "diff": "8.0.2", "jimp": "1.6.0", "marked": "17.0.1", "yoga-layout": "3.2.1" }, "optionalDependencies": { "@dimforge/rapier2d-simd-compat": "^0.17.3", "@opentui/core-darwin-arm64": "0.1.105", "@opentui/core-darwin-x64": "0.1.105", "@opentui/core-linux-arm64": "0.1.105", "@opentui/core-linux-x64": "0.1.105", "@opentui/core-win32-arm64": "0.1.105", "@opentui/core-win32-x64": "0.1.105", "bun-webgpu": "0.1.5", "planck": "^1.4.2", "three": "0.177.0" }, "peerDependencies": { "web-tree-sitter": "0.25.10" } }, "sha512-vllSOOCW6VIThV/96GRLJ1IxIBuR+ci6FDvnPIAG4s7SJ/FW6zAkqDn1xrtBwwk/lM3QWjLqy8BZc+zwWvveJA=="],
 
-    "@opentui/core-darwin-arm64": ["@opentui/core-darwin-arm64@0.1.104", "", { "os": "darwin", "cpu": "arm64" }, "sha512-83Bf+LOLYCgWccAuPzftchs8LIoTzYU8f8CM7GeUFqH0VLKs2Ey+TtCTsBWpeDklOal0XFQr5begotqc/ldPVg=="],
+    "@opentui/core-darwin-arm64": ["@opentui/core-darwin-arm64@0.1.105", "", { "os": "darwin", "cpu": "arm64" }, "sha512-1pIL7aer9amwj8EpYoMNtvavKetIe+nX8uBRmYsMQb+KvJoUAZUqENfRW+qHE5WrsOyxx8/QoyXTHw15GG5iLQ=="],
 
-    "@opentui/core-darwin-x64": ["@opentui/core-darwin-x64@0.1.104", "", { "os": "darwin", "cpu": "x64" }, "sha512-TAHRtEi7Gz2O3TXolPCiWpXsoapKllGCl74bOuJsyipMwfk3wuUu6SeqBPC/cmVJlp143dC8kcGLwLsd3dxsgA=="],
+    "@opentui/core-darwin-x64": ["@opentui/core-darwin-x64@0.1.105", "", { "os": "darwin", "cpu": "x64" }, "sha512-hLIRSWlK3gY2NRXJGWiTBiMYSmRDjOYFZF6WtUVXhY2SL3sp08dhmr/6dmAVH+3pKCsCipLEsrrcQX6SAihCTA=="],
 
-    "@opentui/core-linux-arm64": ["@opentui/core-linux-arm64@0.1.104", "", { "os": "linux", "cpu": "arm64" }, "sha512-WJ8ssxcRpoHWgGLDYlVjlYZGkmA2G9melgXTrzk6CbwhW5tVAE6AmW5Kq9DUHclYssCpNWTvZFMDsVsf5kn2Xw=="],
+    "@opentui/core-linux-arm64": ["@opentui/core-linux-arm64@0.1.105", "", { "os": "linux", "cpu": "arm64" }, "sha512-jlRKfPkozTZEkHEePuCWYcTIUtPm+ieInAwGVqGmjbvqjxdVv1/W/Dt6LEZ/9jpRiOPd+FjXAfLe6wa/XWHr+w=="],
 
-    "@opentui/core-linux-x64": ["@opentui/core-linux-x64@0.1.104", "", { "os": "linux", "cpu": "x64" }, "sha512-I4DurCkJXJxxGwAq1wGZ1vzXh57GxdzljWeCJ5sIPy7coICn+/cWRw9gE9VxiWTa3T85l4YN0UFSQx7IFCEbvg=="],
+    "@opentui/core-linux-x64": ["@opentui/core-linux-x64@0.1.105", "", { "os": "linux", "cpu": "x64" }, "sha512-kfWS1WMg6qHShmxZX9s1tZc/8JcXw6uyy2UtyTbJdRFExtXGH37oKHi8QK8iPL2ExCx4z7zqVnVJfO3X/Wh7lA=="],
 
-    "@opentui/core-win32-arm64": ["@opentui/core-win32-arm64@0.1.104", "", { "os": "win32", "cpu": "arm64" }, "sha512-PDwqGHlVUiAiZa8GXiPPJVWIxucQ5+2FLcK4C76VT8HJzUXiUEGJFtuvi9oY7k29p8olcFHW75Gj1WMUrw+JKw=="],
+    "@opentui/core-win32-arm64": ["@opentui/core-win32-arm64@0.1.105", "", { "os": "win32", "cpu": "arm64" }, "sha512-UFx6A8OpBVbGWK6OAw4GqAqKZgIITJfSOd35pG9yDVKQouHN2OGc2HeeXrH2A4h42p40Xl6IfcqqfllkpC13Dg=="],
 
-    "@opentui/core-win32-x64": ["@opentui/core-win32-x64@0.1.104", "", { "os": "win32", "cpu": "x64" }, "sha512-fQGMxFshk/i7KskqaK5lB8u2K8Lx/LO9+PdfKu/+GBIMKmElpJXQ8Bq2sMf+7COcoXcjAjUJn8cpTyIqbFxAyQ=="],
+    "@opentui/core-win32-x64": ["@opentui/core-win32-x64@0.1.105", "", { "os": "win32", "cpu": "x64" }, "sha512-f9FqqUmxehwhF+cgyazm0YT0v0BYTTCPzd6eztqhl74N3x/kC+jOOz2rdJDC/tTBo1JVsF64KupOnhIs6/Cogg=="],
 
-    "@opentui/solid": ["@opentui/solid@0.1.104", "", { "dependencies": { "@babel/core": "7.28.0", "@babel/preset-typescript": "7.27.1", "@opentui/core": "0.1.104", "babel-plugin-module-resolver": "5.0.2", "babel-preset-solid": "1.9.10", "entities": "7.0.1", "s-js": "^0.4.9" }, "peerDependencies": { "solid-js": "1.9.11" } }, "sha512-Mma1OR3s0QZayRGdbdNv1m3H6IExRrF9QRUNWEZzDOqo3oNxTxaY9K7Qk6eGrk0unMjwwE113TSOdnG80RwYnQ=="],
+    "@opentui/solid": ["@opentui/solid@0.1.105", "", { "dependencies": { "@babel/core": "7.28.0", "@babel/preset-typescript": "7.27.1", "@opentui/core": "0.1.105", "babel-plugin-module-resolver": "5.0.2", "babel-preset-solid": "1.9.10", "entities": "7.0.1", "s-js": "^0.4.9" }, "peerDependencies": { "solid-js": "1.9.11" } }, "sha512-uxnaMP802sCI487pv/Hk9xdFdIj9mkg3eNliAqbqR0Shmd4phcjKEZvPRpijjmI99j4s9nul71jzF3h1oz31Nw=="],
 
     "@oslojs/asn1": ["@oslojs/asn1@1.0.0", "", { "dependencies": { "@oslojs/binary": "1.0.0" } }, "sha512-zw/wn0sj0j0QKbIXfIlnEcTviaCzYOY3V5rAyjR6YtOByFtJiT574+8p9Wlach0lZH9fddD4yb9laEAIl4vXQA=="],
 
diff --git a/nix/hashes.json b/nix/hashes.json
index 8fa0e2787d..e52a9e0945 100644
--- a/nix/hashes.json
+++ b/nix/hashes.json
@@ -1,8 +1,8 @@
 {
   "nodeModules": {
-    "x86_64-linux": "sha256-zQOuZkuOLm9xV5YzfcQiWSzvussXVw/dRPw4HhuYsdc=",
-    "aarch64-linux": "sha256-J8Ak9rCCkKlBj0KhdUOklglpR3ntRP2VjtdmEJox6Ro=",
-    "aarch64-darwin": "sha256-r4F6S9CfGR6qxSaSqu9AIjWCEKd/PuT1Wprcbzk0IwY=",
-    "x86_64-darwin": "sha256-I/ztb7VnLbJYzAxf2egN0+YsJcP5yix3tIoHtiuRUXE="
+    "x86_64-linux": "sha256-U/LZx/D+5JTT1LHSyZkEuqXP/ky7LkHrEYBW5pcVArk=",
+    "aarch64-linux": "sha256-nGZa04h4y3jbdmf87IRrlQm/E5qYR8lj5OxKgQSR2XU=",
+    "aarch64-darwin": "sha256-GD8pCHWMBppDaIfRKxhY2m4xWo1OrY3wOmGw+EC71mw=",
+    "x86_64-darwin": "sha256-KOH1ZB8pdpF7Xer6QIH7rrr9fwF/BZkCTJndPe0wypg="
   }
 }
diff --git a/package.json b/package.json
index b8f90d9752..bcda48fc59 100644
--- a/package.json
+++ b/package.json
@@ -34,8 +34,8 @@
       "@types/cross-spawn": "6.0.6",
       "@octokit/rest": "22.0.0",
       "@hono/zod-validator": "0.4.2",
-      "@opentui/core": "0.1.104",
-      "@opentui/solid": "0.1.104",
+      "@opentui/core": "0.1.105",
+      "@opentui/solid": "0.1.105",
       "ulid": "3.0.1",
       "@kobalte/core": "0.13.11",
       "@types/luxon": "3.7.1",
diff --git a/packages/app/package.json b/packages/app/package.json
index d5349a4a49..829f76c5eb 100644
--- a/packages/app/package.json
+++ b/packages/app/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@opencode-ai/app",
-  "version": "1.14.26",
+  "version": "1.14.27",
   "description": "",
   "type": "module",
   "exports": {
diff --git a/packages/app/src/components/settings-general.tsx b/packages/app/src/components/settings-general.tsx
index f38442379d..8060ae94d9 100644
--- a/packages/app/src/components/settings-general.tsx
+++ b/packages/app/src/components/settings-general.tsx
@@ -11,7 +11,9 @@ import { showToast } from "@opencode-ai/ui/toast"
 import { useParams } from "@solidjs/router"
 import { useLanguage } from "@/context/language"
 import { usePermission } from "@/context/permission"
-import { usePlatform } from "@/context/platform"
+import { usePlatform, type DisplayBackend } from "@/context/platform"
+import { useGlobalSync } from "@/context/global-sync"
+import { useGlobalSDK } from "@/context/global-sdk"
 import {
   monoDefault,
   monoFontFamily,
@@ -40,6 +42,18 @@ type ThemeOption = {
   name: string
 }
 
+type ShellOption = {
+  path: string
+  name: string
+  acceptable: boolean
+}
+
+type ShellSelectOption = {
+  id: string
+  value: string
+  label: string
+}
+
 // To prevent audio from overlapping/playing very quickly when navigating the settings menus,
 // delay the playback by 100ms during quick selection changes and pause existing sounds.
 const stopDemoSound = () => {
@@ -75,10 +89,6 @@ export const SettingsGeneral: Component = () => {
   const params = useParams()
   const settings = useSettings()
 
-  onMount(() => {
-    void theme.loadThemes()
-  })
-
   const [store, setStore] = createStore({
     checking: false,
   })
@@ -165,6 +175,70 @@ export const SettingsGeneral: Component = () => {
 
   const themeOptions = createMemo<ThemeOption[]>(() => theme.ids().map((id) => ({ id, name: theme.name(id) })))
 
+  const globalSync = useGlobalSync()
+  const globalSdk = useGlobalSDK()
+
+  const [shells] = createResource(
+    () =>
+      globalSdk.client.pty
+        .shells()
+        .then((res) => res.data ?? [])
+        .catch(() => [] as ShellOption[]),
+    { initialValue: [] as ShellOption[] },
+  )
+
+  const [displayBackend, { refetch: refetchDisplayBackend }] = createResource(
+    () => (linux() && platform.getDisplayBackend ? true : false),
+    () => Promise.resolve(platform.getDisplayBackend?.() ?? null).catch(() => null as DisplayBackend | null),
+    { initialValue: null as DisplayBackend | null },
+  )
+
+  onMount(() => {
+    void theme.loadThemes()
+  })
+
+  const autoOption = { id: "auto", value: "", label: language.t("settings.general.row.shell.autoDefault") }
+  const currentShell = createMemo(() => globalSync.data.config.shell ?? "")
+
+  const shellOptions = createMemo<ShellSelectOption[]>(() => {
+    const list = shells.latest
+    const current = globalSync.data.config.shell
+
+    const nameCounts = new Map<string, number>()
+    for (const s of list) {
+      nameCounts.set(s.name, (nameCounts.get(s.name) || 0) + 1)
+    }
+
+    const options = [
+      autoOption,
+      ...list.map((s) => {
+        const ambiguousName = (nameCounts.get(s.name) || 0) > 1
+        const text = ambiguousName ? s.path : s.name
+        const label = s.acceptable ? text : `${text} (${language.t("settings.general.row.shell.terminalOnly")})`
+        return {
+          id: s.path,
+          // Prefer name over path - "bash" is much cleaner than the explicit full route even when it may change due to PATH.
+          value: ambiguousName ? s.path : s.name,
+          label,
+        }
+      }),
+    ]
+
+    if (current && !options.some((o) => o.value === current)) {
+      options.push({ id: current, value: current, label: current })
+    }
+
+    return options
+  })
+
+  const onDisplayBackendChange = (checked: boolean) => {
+    const update = platform.setDisplayBackend?.(checked ? "wayland" : "auto")
+    if (!update) return
+    void update.finally(() => {
+      void refetchDisplayBackend()
+    })
+  }
+
   const colorSchemeOptions = createMemo((): { value: ColorScheme; label: string }[] => [
     { value: "system", label: language.t("theme.scheme.system") },
     { value: "light", label: language.t("theme.scheme.light") },
@@ -243,6 +317,27 @@ export const SettingsGeneral: Component = () => {
           </div>
         </SettingsRow>
 
+        <SettingsRow
+          title={language.t("settings.general.row.shell.title")}
+          description={language.t("settings.general.row.shell.description")}
+        >
+          <Select
+            data-action="settings-shell"
+            options={shellOptions()}
+            current={shellOptions().find((o) => o.value === currentShell()) ?? autoOption}
+            value={(o) => o.id}
+            label={(o) => o.label}
+            onSelect={(option) => {
+              if (!option) return
+              globalSync.updateConfig({ shell: option.value })
+            }}
+            variant="secondary"
+            size="small"
+            triggerVariant="settings"
+            triggerStyle={{ "min-width": "180px" }}
+          />
+        </SettingsRow>
+
         <SettingsRow
           title={language.t("settings.general.row.reasoningSummaries.title")}
           description={language.t("settings.general.row.reasoningSummaries.description")}
@@ -651,70 +746,32 @@ export const SettingsGeneral: Component = () => {
 
         <SoundsSection />
 
-        {/*<Show when={platform.platform === "desktop" && platform.os === "windows" && platform.getWslEnabled}>
-          {(_) => {
-            const [enabledResource, actions] = createResource(() => platform.getWslEnabled?.())
-            const enabled = () => (enabledResource.state === "pending" ? undefined : enabledResource.latest)
-
-            return (
-              <div class="flex flex-col gap-1">
-                <h3 class="text-14-medium text-text-strong pb-2">{language.t("settings.desktop.section.wsl")}</h3>
-
-                <SettingsList>
-                  <SettingsRow
-                    title={language.t("settings.desktop.wsl.title")}
-                    description={language.t("settings.desktop.wsl.description")}
-                  >
-                    <div data-action="settings-wsl">
-                      <Switch
-                        checked={enabled() ?? false}
-                        disabled={enabledResource.state === "pending"}
-                        onChange={(checked) => platform.setWslEnabled?.(checked)?.finally(() => actions.refetch())}
-                      />
-                    </div>
-                  </SettingsRow>
-                </SettingsList>
-              </div>
-            )
-          }}
-        </Show>*/}
-
         <UpdatesSection />
 
         <Show when={linux()}>
-          {(_) => {
-            const [valueResource, actions] = createResource(() => platform.getDisplayBackend?.())
-            const value = () => (valueResource.state === "pending" ? undefined : valueResource.latest)
+          <div class="flex flex-col gap-1">
+            <h3 class="text-14-medium text-text-strong pb-2">{language.t("settings.general.section.display")}</h3>
 
-            const onChange = (checked: boolean) =>
-              platform.setDisplayBackend?.(checked ? "wayland" : "auto").finally(() => actions.refetch())
-
-            return (
-              <div class="flex flex-col gap-1">
-                <h3 class="text-14-medium text-text-strong pb-2">{language.t("settings.general.section.display")}</h3>
-
-                <SettingsList>
-                  <SettingsRow
-                    title={
-                      <div class="flex items-center gap-2">
-                        <span>{language.t("settings.general.row.wayland.title")}</span>
-                        <Tooltip value={language.t("settings.general.row.wayland.tooltip")} placement="top">
-                          <span class="text-text-weak">
-                            <Icon name="help" size="small" />
-                          </span>
-                        </Tooltip>
-                      </div>
-                    }
-                    description={language.t("settings.general.row.wayland.description")}
-                  >
-                    <div data-action="settings-wayland">
-                      <Switch checked={value() === "wayland"} onChange={onChange} />
-                    </div>
-                  </SettingsRow>
-                </SettingsList>
-              </div>
-            )
-          }}
+            <SettingsList>
+              <SettingsRow
+                title={
+                  <div class="flex items-center gap-2">
+                    <span>{language.t("settings.general.row.wayland.title")}</span>
+                    <Tooltip value={language.t("settings.general.row.wayland.tooltip")} placement="top">
+                      <span class="text-text-weak">
+                        <Icon name="help" size="small" />
+                      </span>
+                    </Tooltip>
+                  </div>
+                }
+                description={language.t("settings.general.row.wayland.description")}
+              >
+                <div data-action="settings-wayland">
+                  <Switch checked={displayBackend.latest === "wayland"} onChange={onDisplayBackendChange} />
+                </div>
+              </SettingsRow>
+            </SettingsList>
+          </div>
         </Show>
 
         <Show when={desktop() && import.meta.env.VITE_OPENCODE_CHANNEL === "beta"}>
diff --git a/packages/app/src/context/global-sync/bootstrap.ts b/packages/app/src/context/global-sync/bootstrap.ts
index 66f4a3b156..a83030fad2 100644
--- a/packages/app/src/context/global-sync/bootstrap.ts
+++ b/packages/app/src/context/global-sync/bootstrap.ts
@@ -78,7 +78,7 @@ export async function bootstrapGlobal(input: {
     () =>
       retry(() =>
         input.globalSDK.global.config.get().then((x) => {
-          input.setGlobalStore("config", x.data!)
+          input.setGlobalStore("config", reconcile(x.data!, { merge: false }))
         }),
       ),
   ]
@@ -245,7 +245,7 @@ export async function bootstrapDirectory(input: {
     input.setStore("provider", input.global.provider)
   }
   if (Object.keys(input.store.config).length === 0 && Object.keys(input.global.config).length > 0) {
-    input.setStore("config", input.global.config)
+    input.setStore("config", reconcile(input.global.config, { merge: false }))
   }
   if (loading || input.store.provider.all.length === 0) {
     input.setStore("provider_ready", false)
@@ -265,7 +265,8 @@ export async function bootstrapDirectory(input: {
         input.queryClient.ensureQueryData(
           loadAgentsQuery(input.directory, input.sdk, (x) => input.setStore("agent", normalizeAgentList(x.data))),
         ),
-      () => retry(() => input.sdk.config.get().then((x) => input.setStore("config", x.data!))),
+      () =>
+        retry(() => input.sdk.config.get().then((x) => input.setStore("config", reconcile(x.data!, { merge: false })))),
       () => retry(() => input.sdk.session.status().then((x) => input.setStore("session_status", x.data!))),
       !seededProject &&
         (() => retry(() => input.sdk.project.current()).then((x) => input.setStore("project", x.data!.id))),
diff --git a/packages/app/src/i18n/en.ts b/packages/app/src/i18n/en.ts
index 7326f7c8bb..eae5aeb949 100644
--- a/packages/app/src/i18n/en.ts
+++ b/packages/app/src/i18n/en.ts
@@ -728,6 +728,11 @@ export const dict = {
 
   "settings.general.row.language.title": "Language",
   "settings.general.row.language.description": "Change the display language for OpenCode",
+  "settings.general.row.shell.title": "Terminal Shell",
+  "settings.general.row.shell.description":
+    "Choose the shell used for your terminal. Compatible shells are also used for agent tool calls.",
+  "settings.general.row.shell.autoDefault": "Auto (Default)",
+  "settings.general.row.shell.terminalOnly": "terminal only",
   "settings.general.row.appearance.title": "Appearance",
   "settings.general.row.appearance.description": "Customise how OpenCode looks on your device",
   "settings.general.row.colorScheme.title": "Color scheme",
diff --git a/packages/console/app/package.json b/packages/console/app/package.json
index 2572ba1757..e7cc2828e8 100644
--- a/packages/console/app/package.json
+++ b/packages/console/app/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@opencode-ai/console-app",
-  "version": "1.14.26",
+  "version": "1.14.27",
   "type": "module",
   "license": "MIT",
   "scripts": {
diff --git a/packages/console/app/src/component/icon.tsx b/packages/console/app/src/component/icon.tsx
index da2e87ef4c..ed83a1934b 100644
--- a/packages/console/app/src/component/icon.tsx
+++ b/packages/console/app/src/component/icon.tsx
@@ -204,6 +204,14 @@ export function IconGemini(props: JSX.SvgSVGAttributes<SVGSVGElement>) {
   )
 }
 
+export function IconDeepSeek(props: JSX.SvgSVGAttributes<SVGSVGElement>) {
+  return (
+    <svg {...props} xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24" fill="currentColor">
+      <path d="M23.748 4.482c-.254-.124-.364.113-.512.234-.051.039-.094.09-.137.136-.372.397-.806.657-1.373.626-.829-.046-1.537.214-2.163.848-.133-.782-.575-1.249-1.247-1.548-.352-.156-.708-.311-.955-.65-.172-.241-.219-.51-.305-.774-.055-.16-.11-.323-.293-.35-.2-.031-.278.136-.356.276-.313.572-.434 1.202-.422 1.84.027 1.436.633 2.58 1.838 3.393.137.093.172.187.129.323-.082.28-.18.552-.266.833-.055.179-.137.217-.329.14a5.526 5.526 0 0 1-1.736-1.18c-.857-.828-1.631-1.742-2.597-2.458a11.365 11.365 0 0 0-.689-.471c-.985-.957.13-1.743.388-1.836.27-.098.093-.432-.779-.428-.872.004-1.67.295-2.687.684a3.055 3.055 0 0 1-.465.137 9.597 9.597 0 0 0-2.883-.102c-1.885.21-3.39 1.102-4.497 2.623C.082 8.606-.231 10.684.152 12.85c.403 2.284 1.569 4.175 3.36 5.653 1.858 1.533 3.997 2.284 6.438 2.14 1.482-.085 3.133-.284 4.994-1.86.47.234.962.327 1.78.397.63.059 1.236-.03 1.705-.128.735-.156.684-.837.419-.961-2.155-1.004-1.682-.595-2.113-.926 1.096-1.296 2.746-2.642 3.392-7.003.05-.347.007-.565 0-.845-.004-.17.035-.237.23-.256a4.173 4.173 0 0 0 1.545-.475c1.396-.763 1.96-2.015 2.093-3.517.02-.23-.004-.467-.247-.588zM11.581 18c-2.089-1.642-3.102-2.183-3.52-2.16-.392.024-.321.471-.235.763.09.288.207.486.371.739.114.167.192.416-.113.603-.673.416-1.842-.14-1.897-.167-1.361-.802-2.5-1.86-3.301-3.307-.774-1.393-1.224-2.887-1.298-4.482-.02-.386.093-.522.477-.592a4.696 4.696 0 0 1 1.529-.039c2.132.312 3.946 1.265 5.468 2.774.868.86 1.525 1.887 2.202 2.891.72 1.066 1.494 2.082 2.48 2.914.348.292.625.514.891.677-.802.09-2.14.11-3.054-.614zm1-6.44a.306.306 0 0 1 .415-.287.302.302 0 0 1 .2.288.306.306 0 0 1-.31.307.303.303 0 0 1-.304-.308zm3.11 1.596c-.2.081-.399.151-.59.16a1.245 1.245 0 0 1-.798-.254c-.274-.23-.47-.358-.552-.758a1.73 1.73 0 0 1 .016-.588c.07-.327-.008-.537-.239-.727-.187-.156-.426-.199-.688-.199a.559.559 0 0 1-.254-.078c-.11-.054-.2-.19-.114-.358.028-.054.16-.186.192-.21.356-.202.767-.136 1.146.016.352.144.618.408 1.001.782.391.451.462.576.685.914.176.265.336.537.445.848.067.195-.019.354-.25.452z" />
+    </svg>
+  )
+}
+
 export function IconMiMo(props: JSX.SvgSVGAttributes<SVGSVGElement>) {
   return (
     <svg {...props} xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24" fill="currentColor">
diff --git a/packages/console/app/src/routes/go/index.tsx b/packages/console/app/src/routes/go/index.tsx
index 2b169fd500..85bf34321b 100644
--- a/packages/console/app/src/routes/go/index.tsx
+++ b/packages/console/app/src/routes/go/index.tsx
@@ -12,7 +12,7 @@ import { Footer } from "~/component/footer"
 import { Header } from "~/component/header"
 import { config } from "~/config"
 import { getLastSeenWorkspaceID } from "../workspace/common"
-import { IconMiniMax, IconMiMo, IconZai, IconAlibaba } from "~/component/icon"
+import { IconMiniMax, IconMiMo, IconZai, IconAlibaba, IconDeepSeek } from "~/component/icon"
 import { useI18n } from "~/context/i18n"
 import { useLanguage } from "~/context/language"
 import { LocaleLinks } from "~/component/locale-links"
@@ -340,6 +340,9 @@ export default function Home() {
                 <div>
                   <IconAlibaba width="24" height="24" />
                 </div>
+                <div>
+                  <IconDeepSeek width="24" height="24" />
+                </div>
                 <div>
                   <IconMiMo width="24" height="24" />
                 </div>
diff --git a/packages/console/app/src/routes/zen/go/v1/models.ts b/packages/console/app/src/routes/zen/go/v1/models.ts
index 85db306880..83ef74fb61 100644
--- a/packages/console/app/src/routes/zen/go/v1/models.ts
+++ b/packages/console/app/src/routes/zen/go/v1/models.ts
@@ -1,10 +1,12 @@
 import type { APIEvent } from "@solidjs/start/server"
-import { getHandler, optionsHandler } from "../../util/modelsHandler"
+import { ZenData } from "@opencode-ai/console-core/model.js"
+import { buildModelsResponse, buildOptionsResponse } from "../../util/modelsHandler"
 
 export async function OPTIONS(_input: APIEvent) {
-  return optionsHandler()
+  return buildOptionsResponse()
 }
 
-export async function GET(input: APIEvent) {
-  return getHandler({ modelList: "lite" })
+export async function GET(_input: APIEvent) {
+  const models = Object.keys(ZenData.list("lite").models)
+  return buildModelsResponse(models)
 }
diff --git a/packages/console/app/src/routes/zen/util/modelsHandler.ts b/packages/console/app/src/routes/zen/util/modelsHandler.ts
index d924e25c80..102e4151b9 100644
--- a/packages/console/app/src/routes/zen/util/modelsHandler.ts
+++ b/packages/console/app/src/routes/zen/util/modelsHandler.ts
@@ -1,6 +1,4 @@
-import { ZenData } from "@opencode-ai/console-core/model.js"
-
-export async function optionsHandler() {
+export async function buildOptionsResponse() {
   return new Response(null, {
     status: 200,
     headers: {
@@ -11,16 +9,13 @@ export async function optionsHandler() {
   })
 }
 
-export async function getHandler(opts: { modelList: "lite" | "full"; disabledModels?: string[] }) {
-  const zenData = ZenData.list(opts.modelList)
-
+export async function buildModelsResponse(models: string[]) {
   return new Response(
     JSON.stringify({
       object: "list",
-      data: Object.entries(zenData.models)
-        .filter(([id]) => !opts.disabledModels?.includes(id))
-        .filter(([id]) => !id.startsWith("alpha-"))
-        .map(([id, _model]) => ({
+      data: models
+        .filter((id) => !id.startsWith("alpha-"))
+        .map((id) => ({
           id,
           object: "model",
           created: Math.floor(Date.now() / 1000),
diff --git a/packages/console/app/src/routes/zen/v1/models.ts b/packages/console/app/src/routes/zen/v1/models.ts
index d2fc36e459..794f85029a 100644
--- a/packages/console/app/src/routes/zen/v1/models.ts
+++ b/packages/console/app/src/routes/zen/v1/models.ts
@@ -1,18 +1,19 @@
 import type { APIEvent } from "@solidjs/start/server"
+import { ZenData } from "@opencode-ai/console-core/model.js"
 import { and, Database, eq, isNull } from "@opencode-ai/console-core/drizzle/index.js"
 import { KeyTable } from "@opencode-ai/console-core/schema/key.sql.js"
 import { WorkspaceTable } from "@opencode-ai/console-core/schema/workspace.sql.js"
 import { ModelTable } from "@opencode-ai/console-core/schema/model.sql.js"
-import { optionsHandler, getHandler } from "~/routes/zen/util/modelsHandler"
+import { buildOptionsResponse, buildModelsResponse } from "~/routes/zen/util/modelsHandler"
 
 export async function OPTIONS(_input: APIEvent) {
-  return optionsHandler()
+  return buildOptionsResponse()
 }
 
 export async function GET(input: APIEvent) {
   const disabledModels = await (() => {
     const apiKey = input.request.headers.get("authorization")?.split(" ")[1]
-    if (!apiKey) return []
+    if (!apiKey) return [] as string[]
 
     return Database.use((tx) =>
       tx
@@ -27,5 +28,7 @@ export async function GET(input: APIEvent) {
     )
   })()
 
-  return getHandler({ modelList: "full", disabledModels })
+  const models = Object.keys(ZenData.list("full").models).filter((id) => !disabledModels.includes(id))
+
+  return buildModelsResponse(models)
 }
diff --git a/packages/console/core/package.json b/packages/console/core/package.json
index 67f6dad754..cdd3bada11 100644
--- a/packages/console/core/package.json
+++ b/packages/console/core/package.json
@@ -1,7 +1,7 @@
 {
   "$schema": "https://json.schemastore.org/package.json",
   "name": "@opencode-ai/console-core",
-  "version": "1.14.26",
+  "version": "1.14.27",
   "private": true,
   "type": "module",
   "license": "MIT",
diff --git a/packages/console/function/package.json b/packages/console/function/package.json
index 2f02393dd0..4f60497164 100644
--- a/packages/console/function/package.json
+++ b/packages/console/function/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@opencode-ai/console-function",
-  "version": "1.14.26",
+  "version": "1.14.27",
   "$schema": "https://json.schemastore.org/package.json",
   "private": true,
   "type": "module",
diff --git a/packages/console/mail/package.json b/packages/console/mail/package.json
index 77603c4cb3..3d5cc27445 100644
--- a/packages/console/mail/package.json
+++ b/packages/console/mail/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@opencode-ai/console-mail",
-  "version": "1.14.26",
+  "version": "1.14.27",
   "dependencies": {
     "@jsx-email/all": "2.2.3",
     "@jsx-email/cli": "1.4.3",
diff --git a/packages/core/package.json b/packages/core/package.json
index d69f1b575d..546dc576c9 100644
--- a/packages/core/package.json
+++ b/packages/core/package.json
@@ -1,12 +1,13 @@
 {
   "$schema": "https://json.schemastore.org/package.json",
-  "version": "1.14.26",
+  "version": "1.14.27",
   "name": "@opencode-ai/core",
   "type": "module",
   "license": "MIT",
   "private": true,
   "scripts": {
     "test": "bun test",
+    "test:ci": "mkdir -p .artifacts/unit && bun test --timeout 30000 --reporter=junit --reporter-outfile=.artifacts/unit/junit.xml",
     "typecheck": "tsgo --noEmit"
   },
   "bin": {
diff --git a/packages/core/src/npm-config.ts b/packages/core/src/npm-config.ts
new file mode 100644
index 0000000000..896bb84872
--- /dev/null
+++ b/packages/core/src/npm-config.ts
@@ -0,0 +1,40 @@
+export * as NpmConfig from "./npm-config"
+
+import { fileURLToPath } from "url"
+// @ts-expect-error npm does not publish types for this internal config API.
+import Config from "@npmcli/config"
+// @ts-expect-error npm does not publish types for this internal config API.
+import { definitions, flatten, nerfDarts, shorthands } from "@npmcli/config/lib/definitions/index.js"
+import { Effect } from "effect"
+
+const npmPath = fileURLToPath(new URL("..", import.meta.url))
+
+export const load = (dir: string) =>
+  Effect.tryPromise({
+    try: async () => {
+      const config = new Config({
+        npmPath,
+        cwd: dir,
+        env: { ...process.env },
+        argv: [process.execPath, process.execPath],
+        execPath: process.execPath,
+        platform: process.platform,
+        definitions,
+        flatten,
+        nerfDarts,
+        shorthands,
+        warn: false,
+      })
+      await config.load()
+      return config.flat as Record<string, unknown>
+    },
+    catch: (cause) => cause,
+  }).pipe(Effect.orElseSucceed(() => ({}) as Record<string, unknown>))
+
+export const registry = (dir: string) =>
+  load(dir).pipe(
+    Effect.map((config) => {
+      const registry = typeof config.registry === "string" ? config.registry : "https://registry.npmjs.org"
+      return registry.endsWith("/") ? registry.slice(0, -1) : registry
+    }),
+  )
diff --git a/packages/core/src/npm.ts b/packages/core/src/npm.ts
index a52e0a9a51..92e4042768 100644
--- a/packages/core/src/npm.ts
+++ b/packages/core/src/npm.ts
@@ -1,22 +1,14 @@
 export * as Npm from "./npm"
 
 import path from "path"
-import { fileURLToPath } from "url"
 import npa from "npm-package-arg"
-import semver from "semver"
-// @ts-expect-error npm does not publish types for this internal config API.
-import Config from "@npmcli/config"
-// @ts-expect-error npm does not publish types for this internal config API.
-import { definitions, flatten, nerfDarts, shorthands } from "@npmcli/config/lib/definitions/index.js"
-import { Effect, Schema, Context, Layer, Option, FileSystem, Stream } from "effect"
+import { Effect, Schema, Context, Layer, Option, FileSystem } from "effect"
 import { NodeFileSystem } from "@effect/platform-node"
 import { AppFileSystem } from "./filesystem"
 import { Global } from "./global"
 import { EffectFlock } from "./util/effect-flock"
 import { makeRuntime } from "./effect/runtime"
-import { ChildProcess, ChildProcessSpawner } from "effect/unstable/process"
-
-import { CrossSpawnSpawner } from "./cross-spawn-spawner"
+import { NpmConfig } from "./npm-config"
 
 export class InstallFailedError extends Schema.TaggedErrorClass<InstallFailedError>()("NpmInstallFailedError", {
   add: Schema.Array(Schema.String).pipe(Schema.optional),
@@ -40,46 +32,18 @@ export interface Interface {
       }[]
     },
   ) => Effect.Effect<void, EffectFlock.LockError | InstallFailedError>
-  readonly outdated: (pkg: string, cachedVersion: string) => Effect.Effect<boolean>
   readonly which: (pkg: string, bin?: string) => Effect.Effect<Option.Option<string>>
 }
 
 export class Service extends Context.Service<Service, Interface>()("@opencode/Npm") {}
 
 const illegal = process.platform === "win32" ? new Set(["<", ">", ":", '"', "|", "?", "*"]) : undefined
-const npmPath = fileURLToPath(new URL("..", import.meta.url))
 
 export function sanitize(pkg: string) {
   if (!illegal) return pkg
   return Array.from(pkg, (char) => (illegal.has(char) || char.charCodeAt(0) < 32 ? "_" : char)).join("")
 }
 
-const loadOptions = (dir: string) =>
-  Effect.tryPromise({
-    try: async () => {
-      const config = new Config({
-        npmPath,
-        cwd: dir,
-        env: { ...process.env },
-        argv: [process.execPath, process.execPath],
-        execPath: process.execPath,
-        platform: process.platform,
-        definitions,
-        flatten,
-        nerfDarts,
-        shorthands,
-        warn: false,
-      })
-      await config.load()
-      return config.flat
-    },
-    catch: (cause) =>
-      new InstallFailedError({
-        cause,
-        dir,
-      }),
-  })
-
 const resolveEntryPoint = (name: string, dir: string): EntryPoint => {
   let entrypoint: Option.Option<string>
   try {
@@ -110,39 +74,13 @@ export const layer = Layer.effect(
     const global = yield* Global.Service
     const fs = yield* FileSystem.FileSystem
     const flock = yield* EffectFlock.Service
-    const spawner = yield* ChildProcessSpawner.ChildProcessSpawner
     const directory = (pkg: string) => path.join(global.cache, "packages", sanitize(pkg))
-    const runView = Effect.fnUntraced(function* (cmd: string[]) {
-      const handle = yield* spawner.spawn(
-        ChildProcess.make(cmd[0], cmd.slice(1), {
-          extendEnv: true,
-        }),
-      )
-      const [stdout, stderr] = yield* Effect.all(
-        [Stream.mkString(Stream.decodeText(handle.stdout)), Stream.mkString(Stream.decodeText(handle.stderr))],
-        { concurrency: 2 },
-      )
-      const code = yield* handle.exitCode
-      if (code !== 0 || !stdout.trim()) {
-        return yield* Effect.fail(stderr || stdout || `Failed to run ${cmd.join(" ")}`)
-      }
-      return yield* Schema.decodeUnknownEffect(Schema.fromJsonString(Schema.String))(stdout)
-    }, Effect.scoped)
-    const viewLatestVersion = Effect.fnUntraced(function* (pkg: string) {
-      return yield* runView(["npm", "view", pkg, "dist-tags.latest", "--json"]).pipe(
-        Effect.catch(() =>
-          runView(["pnpm", "view", pkg, "dist-tags.latest", "--json"]).pipe(
-            Effect.catch(() => runView(["bun", "pm", "view", pkg, "dist-tags.latest", "--json"])),
-          ),
-        ),
-      )
-    })
     const reify = (input: { dir: string; add?: string[] }) =>
       Effect.gen(function* () {
         yield* flock.acquire(`npm-install:${input.dir}`)
         const { Arborist } = yield* Effect.promise(() => import("@npmcli/arborist"))
         const add = input.add ?? []
-        const npmOptions = yield* loadOptions(input.dir)
+        const npmOptions = yield* NpmConfig.load(input.dir)
         const arborist = new Arborist({
           ...npmOptions,
           path: input.dir,
@@ -172,18 +110,6 @@ export const layer = Layer.effect(
         }),
       )
 
-    const outdated = Effect.fn("Npm.outdated")(function* (pkg: string, cachedVersion: string) {
-      const latestVersion = yield* viewLatestVersion(pkg).pipe(Effect.option)
-      if (Option.isNone(latestVersion)) {
-        return false
-      }
-
-      const range = /[\s^~*xX<>|=]/.test(cachedVersion)
-      if (range) return !semver.satisfies(latestVersion.value, cachedVersion)
-
-      return semver.lt(cachedVersion, latestVersion.value)
-    })
-
     const add = Effect.fn("Npm.add")(function* (pkg: string) {
       const dir = directory(pkg)
       const name = (() => {
@@ -309,7 +235,6 @@ export const layer = Layer.effect(
     return Service.of({
       add,
       install,
-      outdated,
       which,
     })
   }),
@@ -320,7 +245,6 @@ export const defaultLayer = layer.pipe(
   Layer.provide(AppFileSystem.layer),
   Layer.provide(Global.layer),
   Layer.provide(NodeFileSystem.layer),
-  Layer.provide(CrossSpawnSpawner.defaultLayer),
 )
 
 const { runPromise } = makeRuntime(Service, defaultLayer)
@@ -337,10 +261,6 @@ export async function add(...args: Parameters<Interface["add"]>) {
   }
 }
 
-export async function outdated(...args: Parameters<Interface["outdated"]>) {
-  return runPromise((svc) => svc.outdated(...args))
-}
-
 export async function which(...args: Parameters<Interface["which"]>) {
   const resolved = await runPromise((svc) => svc.which(...args))
   return Option.getOrUndefined(resolved)
diff --git a/packages/core/test/fixture/tmpdir.ts b/packages/core/test/fixture/tmpdir.ts
new file mode 100644
index 0000000000..950b1401b6
--- /dev/null
+++ b/packages/core/test/fixture/tmpdir.ts
@@ -0,0 +1,13 @@
+import fs from "fs/promises"
+import { tmpdir as osTmpdir } from "os"
+import path from "path"
+
+export const tmpdir = async () => {
+  const dir = await fs.mkdtemp(path.join(osTmpdir(), "opencode-core-test-"))
+  return {
+    path: dir,
+    async [Symbol.asyncDispose]() {
+      await fs.rm(dir, { recursive: true, force: true })
+    },
+  }
+}
diff --git a/packages/core/test/npm-config.test.ts b/packages/core/test/npm-config.test.ts
new file mode 100644
index 0000000000..895b35db54
--- /dev/null
+++ b/packages/core/test/npm-config.test.ts
@@ -0,0 +1,51 @@
+import path from "path"
+import { describe, expect, test } from "bun:test"
+import { Effect } from "effect"
+import { NpmConfig } from "@opencode-ai/core/npm-config"
+import { tmpdir } from "./fixture/tmpdir"
+
+describe("NpmConfig.load", () => {
+  test("reads registry from project .npmrc", async () => {
+    await using tmp = await tmpdir()
+    await Bun.write(path.join(tmp.path, ".npmrc"), "registry=https://registry.example.test/\n")
+
+    const config = await Effect.runPromise(NpmConfig.load(tmp.path))
+
+    expect(config.registry).toBe("https://registry.example.test/")
+  })
+
+  test("reads scoped registries from project .npmrc", async () => {
+    await using tmp = await tmpdir()
+    await Bun.write(path.join(tmp.path, ".npmrc"), "@acme:registry=https://npm.acme.test/\n")
+
+    const config = await Effect.runPromise(NpmConfig.load(tmp.path))
+
+    expect(config["@acme:registry"]).toBe("https://npm.acme.test/")
+  })
+
+  test("flattens boolean and list options", async () => {
+    await using tmp = await tmpdir()
+    await Bun.write(path.join(tmp.path, ".npmrc"), "ignore-scripts=true\nomit[]=dev\nomit[]=optional\n")
+
+    const config = await Effect.runPromise(NpmConfig.load(tmp.path))
+
+    expect(config.ignoreScripts).toBe(true)
+    expect(config.omit).toEqual(["dev", "optional"])
+  })
+})
+
+describe("NpmConfig.registry", () => {
+  test("normalizes configured registry without trailing slash", async () => {
+    await using tmp = await tmpdir()
+    await Bun.write(path.join(tmp.path, ".npmrc"), "registry=https://registry.example.test/\n")
+
+    await expect(Effect.runPromise(NpmConfig.registry(tmp.path))).resolves.toBe("https://registry.example.test")
+  })
+
+  test("leaves configured registry without trailing slash unchanged", async () => {
+    await using tmp = await tmpdir()
+    await Bun.write(path.join(tmp.path, ".npmrc"), "registry=https://registry.example.test\n")
+
+    await expect(Effect.runPromise(NpmConfig.registry(tmp.path))).resolves.toBe("https://registry.example.test")
+  })
+})
diff --git a/packages/core/test/npm.test.ts b/packages/core/test/npm.test.ts
new file mode 100644
index 0000000000..3e94a08692
--- /dev/null
+++ b/packages/core/test/npm.test.ts
@@ -0,0 +1,56 @@
+import fs from "fs/promises"
+import path from "path"
+import { describe, expect, test } from "bun:test"
+import { Npm } from "@opencode-ai/core/npm"
+import { tmpdir } from "./fixture/tmpdir"
+
+const win = process.platform === "win32"
+
+const writePackage = (dir: string, pkg: Record<string, unknown>) =>
+  Bun.write(
+    path.join(dir, "package.json"),
+    JSON.stringify({
+      version: "1.0.0",
+      ...pkg,
+    }),
+  )
+
+describe("Npm.sanitize", () => {
+  test("keeps normal scoped package specs unchanged", () => {
+    expect(Npm.sanitize("@opencode/acme")).toBe("@opencode/acme")
+    expect(Npm.sanitize("@opencode/acme@1.0.0")).toBe("@opencode/acme@1.0.0")
+    expect(Npm.sanitize("prettier")).toBe("prettier")
+  })
+
+  test("handles git https specs", () => {
+    const spec = "acme@git+https://github.com/opencode/acme.git"
+    const expected = win ? "acme@git+https_//github.com/opencode/acme.git" : spec
+    expect(Npm.sanitize(spec)).toBe(expected)
+  })
+})
+
+describe("Npm.install", () => {
+  test("respects omit from project .npmrc", async () => {
+    await using tmp = await tmpdir()
+
+    await writePackage(tmp.path, {
+      name: "fixture",
+      dependencies: {
+        "prod-pkg": "file:./prod-pkg",
+      },
+      devDependencies: {
+        "dev-pkg": "file:./dev-pkg",
+      },
+    })
+    await Bun.write(path.join(tmp.path, ".npmrc"), "omit=dev\n")
+    await fs.mkdir(path.join(tmp.path, "prod-pkg"))
+    await fs.mkdir(path.join(tmp.path, "dev-pkg"))
+    await writePackage(path.join(tmp.path, "prod-pkg"), { name: "prod-pkg" })
+    await writePackage(path.join(tmp.path, "dev-pkg"), { name: "dev-pkg" })
+
+    await Npm.install(tmp.path)
+
+    await expect(fs.stat(path.join(tmp.path, "node_modules", "prod-pkg"))).resolves.toBeDefined()
+    await expect(fs.stat(path.join(tmp.path, "node_modules", "dev-pkg"))).rejects.toThrow()
+  })
+})
diff --git a/packages/desktop-electron/package.json b/packages/desktop-electron/package.json
index 69bef5dff4..9c0aa253e9 100644
--- a/packages/desktop-electron/package.json
+++ b/packages/desktop-electron/package.json
@@ -1,7 +1,7 @@
 {
   "name": "@opencode-ai/desktop-electron",
   "private": true,
-  "version": "1.14.26",
+  "version": "1.14.27",
   "type": "module",
   "license": "MIT",
   "homepage": "https://opencode.ai",
diff --git a/packages/desktop/package.json b/packages/desktop/package.json
index 8baca7e90c..96b8caf116 100644
--- a/packages/desktop/package.json
+++ b/packages/desktop/package.json
@@ -1,7 +1,7 @@
 {
   "name": "@opencode-ai/desktop",
   "private": true,
-  "version": "1.14.26",
+  "version": "1.14.27",
   "type": "module",
   "license": "MIT",
   "scripts": {
diff --git a/packages/enterprise/package.json b/packages/enterprise/package.json
index 93c3f15f18..4c7809aff9 100644
--- a/packages/enterprise/package.json
+++ b/packages/enterprise/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@opencode-ai/enterprise",
-  "version": "1.14.26",
+  "version": "1.14.27",
   "private": true,
   "type": "module",
   "license": "MIT",
diff --git a/packages/extensions/zed/extension.toml b/packages/extensions/zed/extension.toml
index fee6803c48..97549b3d45 100644
--- a/packages/extensions/zed/extension.toml
+++ b/packages/extensions/zed/extension.toml
@@ -1,7 +1,7 @@
 id = "opencode"
 name = "OpenCode"
 description = "The open source coding agent."
-version = "1.14.26"
+version = "1.14.27"
 schema_version = 1
 authors = ["Anomaly"]
 repository = "https://github.com/anomalyco/opencode"
@@ -11,26 +11,26 @@ name = "OpenCode"
 icon = "./icons/opencode.svg"
 
 [agent_servers.opencode.targets.darwin-aarch64]
-archive = "https://github.com/anomalyco/opencode/releases/download/v1.14.26/opencode-darwin-arm64.zip"
+archive = "https://github.com/anomalyco/opencode/releases/download/v1.14.27/opencode-darwin-arm64.zip"
 cmd = "./opencode"
 args = ["acp"]
 
 [agent_servers.opencode.targets.darwin-x86_64]
-archive = "https://github.com/anomalyco/opencode/releases/download/v1.14.26/opencode-darwin-x64.zip"
+archive = "https://github.com/anomalyco/opencode/releases/download/v1.14.27/opencode-darwin-x64.zip"
 cmd = "./opencode"
 args = ["acp"]
 
 [agent_servers.opencode.targets.linux-aarch64]
-archive = "https://github.com/anomalyco/opencode/releases/download/v1.14.26/opencode-linux-arm64.tar.gz"
+archive = "https://github.com/anomalyco/opencode/releases/download/v1.14.27/opencode-linux-arm64.tar.gz"
 cmd = "./opencode"
 args = ["acp"]
 
 [agent_servers.opencode.targets.linux-x86_64]
-archive = "https://github.com/anomalyco/opencode/releases/download/v1.14.26/opencode-linux-x64.tar.gz"
+archive = "https://github.com/anomalyco/opencode/releases/download/v1.14.27/opencode-linux-x64.tar.gz"
 cmd = "./opencode"
 args = ["acp"]
 
 [agent_servers.opencode.targets.windows-x86_64]
-archive = "https://github.com/anomalyco/opencode/releases/download/v1.14.26/opencode-windows-x64.zip"
+archive = "https://github.com/anomalyco/opencode/releases/download/v1.14.27/opencode-windows-x64.zip"
 cmd = "./opencode.exe"
 args = ["acp"]
diff --git a/packages/function/package.json b/packages/function/package.json
index dc4ff19016..5373da0249 100644
--- a/packages/function/package.json
+++ b/packages/function/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@opencode-ai/function",
-  "version": "1.14.26",
+  "version": "1.14.27",
   "$schema": "https://json.schemastore.org/package.json",
   "private": true,
   "type": "module",
diff --git a/packages/opencode/package.json b/packages/opencode/package.json
index 72032b3e1c..9586ccac37 100644
--- a/packages/opencode/package.json
+++ b/packages/opencode/package.json
@@ -1,6 +1,6 @@
 {
   "$schema": "https://json.schemastore.org/package.json",
-  "version": "1.14.26",
+  "version": "1.14.27",
   "name": "opencode",
   "type": "module",
   "license": "MIT",
diff --git a/packages/opencode/specs/effect/http-api.md b/packages/opencode/specs/effect/http-api.md
index 5f16ef197e..791aa0e28f 100644
--- a/packages/opencode/specs/effect/http-api.md
+++ b/packages/opencode/specs/effect/http-api.md
@@ -184,7 +184,7 @@ Use raw Effect HTTP routes where `HttpApi` does not fit. The goal is deleting Ho
 | experimental JSON routes  | `bridged`         | console, tool, worktree list/mutations, global session list, resource list |
 | `session`                 | `bridged`         | read, lifecycle, prompt, message/part mutations, revert, permission reply  |
 | `sync`                    | `bridged`         | start/replay/history                                                       |
-| `event`                   | `special`         | SSE                                                                        |
+| `event`                   | `bridged`         | SSE via raw Effect HTTP                                                    |
 | `pty`                     | `special`         | websocket                                                                  |
 | `tui`                     | `special`         | UI bridge                                                                  |
 
@@ -316,32 +316,32 @@ This checklist tracks bridge parity only. Checked routes are available through t
 
 ### Event Routes
 
-- [ ] `GET /event` - SSE event stream; replace with raw Effect HTTP, not `HttpApi`.
+- [x] `GET /event` - SSE event stream via raw Effect HTTP.
 
 ### PTY Routes
 
-- [ ] `GET /pty` - list PTY sessions.
-- [ ] `POST /pty` - create PTY session.
-- [ ] `GET /pty/:ptyID` - get PTY session.
-- [ ] `PUT /pty/:ptyID` - update PTY session.
-- [ ] `DELETE /pty/:ptyID` - remove PTY session.
-- [ ] `GET /pty/:ptyID/connect` - PTY websocket; replace with raw Effect HTTP/websocket support.
+- [x] `GET /pty` - list PTY sessions.
+- [x] `POST /pty` - create PTY session.
+- [x] `GET /pty/:ptyID` - get PTY session.
+- [x] `PUT /pty/:ptyID` - update PTY session.
+- [x] `DELETE /pty/:ptyID` - remove PTY session.
+- [x] `GET /pty/:ptyID/connect` - PTY websocket; replace with raw Effect HTTP/websocket support.
 
 ### TUI Routes
 
-- [ ] `POST /tui/append-prompt` - append prompt.
-- [ ] `POST /tui/open-help` - open help.
-- [ ] `POST /tui/open-sessions` - open sessions.
-- [ ] `POST /tui/open-themes` - open themes.
-- [ ] `POST /tui/open-models` - open models.
-- [ ] `POST /tui/submit-prompt` - submit prompt.
-- [ ] `POST /tui/clear-prompt` - clear prompt.
-- [ ] `POST /tui/execute-command` - execute command.
-- [ ] `POST /tui/show-toast` - show toast.
-- [ ] `POST /tui/publish` - publish TUI event.
-- [ ] `POST /tui/select-session` - select session.
-- [ ] `GET /tui/control/next` - get next TUI request.
-- [ ] `POST /tui/control/response` - submit TUI control response.
+- [x] `POST /tui/append-prompt` - append prompt.
+- [x] `POST /tui/open-help` - open help.
+- [x] `POST /tui/open-sessions` - open sessions.
+- [x] `POST /tui/open-themes` - open themes.
+- [x] `POST /tui/open-models` - open models.
+- [x] `POST /tui/submit-prompt` - submit prompt.
+- [x] `POST /tui/clear-prompt` - clear prompt.
+- [x] `POST /tui/execute-command` - execute command.
+- [x] `POST /tui/show-toast` - show toast.
+- [x] `POST /tui/publish` - publish TUI event.
+- [x] `POST /tui/select-session` - select session.
+- [x] `GET /tui/control/next` - get next TUI request.
+- [x] `POST /tui/control/response` - submit TUI control response.
 
 ## Remaining PR Plan
 
@@ -358,8 +358,8 @@ Prefer smaller PRs from here so route behavior and SDK/OpenAPI fallout stays rev
 9. [x] Bridge session lifecycle mutation routes: create, delete, update, fork, abort.
 10. [x] Bridge remaining session mutation and prompt routes.
 11. [ ] Replace event SSE with non-Hono Effect HTTP.
-12. [ ] Replace pty websocket/control routes with non-Hono Effect HTTP.
-13. [ ] Replace tui bridge routes or explicitly isolate them behind a non-Hono compatibility layer.
+12. [x] Replace pty websocket/control routes with non-Hono Effect HTTP.
+13. [x] Replace tui bridge routes or explicitly isolate them behind a non-Hono compatibility layer.
 14. [ ] Switch OpenAPI/SDK generation to Effect routes and compare SDK output.
 15. [ ] Flip ported JSON routes default-on, keep a short fallback, then delete replaced Hono route files.
 
diff --git a/packages/opencode/src/cli/cmd/tui/app.tsx b/packages/opencode/src/cli/cmd/tui/app.tsx
index 015b0ed8f4..69987b1464 100644
--- a/packages/opencode/src/cli/cmd/tui/app.tsx
+++ b/packages/opencode/src/cli/cmd/tui/app.tsx
@@ -29,7 +29,8 @@ import { SDKProvider, useSDK } from "@tui/context/sdk"
 import { StartupLoading } from "@tui/component/startup-loading"
 import { SyncProvider, useSync } from "@tui/context/sync"
 import { LocalProvider, useLocal } from "@tui/context/local"
-import { DialogModel, useConnected } from "@tui/component/dialog-model"
+import { DialogModel } from "@tui/component/dialog-model"
+import { useConnected } from "@tui/component/use-connected"
 import { DialogMcp } from "@tui/component/dialog-mcp"
 import { DialogStatus } from "@tui/component/dialog-status"
 import { DialogThemeList } from "@tui/component/dialog-theme-list"
diff --git a/packages/opencode/src/cli/cmd/tui/component/dialog-model.tsx b/packages/opencode/src/cli/cmd/tui/component/dialog-model.tsx
index fb6849d72d..06723f3c2b 100644
--- a/packages/opencode/src/cli/cmd/tui/component/dialog-model.tsx
+++ b/packages/opencode/src/cli/cmd/tui/component/dialog-model.tsx
@@ -8,13 +8,7 @@ import { createDialogProviderOptions, DialogProvider } from "./dialog-provider"
 import { DialogVariant } from "./dialog-variant"
 import { useKeybind } from "../context/keybind"
 import * as fuzzysort from "fuzzysort"
-
-export function useConnected() {
-  const sync = useSync()
-  return createMemo(() =>
-    sync.data.provider.some((x) => x.id !== "opencode" || Object.values(x.models).some((y) => y.cost?.input !== 0)),
-  )
-}
+import { useConnected } from "./use-connected"
 
 export function DialogModel(props: { providerID?: string }) {
   const local = useLocal()
diff --git a/packages/opencode/src/cli/cmd/tui/component/dialog-provider.tsx b/packages/opencode/src/cli/cmd/tui/component/dialog-provider.tsx
index 8e24ffb1b1..ebc28847f0 100644
--- a/packages/opencode/src/cli/cmd/tui/component/dialog-provider.tsx
+++ b/packages/opencode/src/cli/cmd/tui/component/dialog-provider.tsx
@@ -14,6 +14,7 @@ import { useKeyboard } from "@opentui/solid"
 import * as Clipboard from "@tui/util/clipboard"
 import { useToast } from "../ui/toast"
 import { isConsoleManagedProvider } from "@tui/util/provider-origin"
+import { useConnected } from "./use-connected"
 
 const PROVIDER_PRIORITY: Record<string, number> = {
   opencode: 0,
@@ -30,6 +31,7 @@ export function createDialogProviderOptions() {
   const sdk = useSDK()
   const toast = useToast()
   const { theme } = useTheme()
+  const onboarded = useConnected()
   const options = createMemo(() => {
     return pipe(
       sync.data.provider_next.all,
@@ -49,7 +51,7 @@ export function createDialogProviderOptions() {
           }[provider.id],
           footer: consoleManaged ? sync.data.console_state.activeOrgName : undefined,
           category: provider.id in PROVIDER_PRIORITY ? "Popular" : "Other",
-          gutter: connected ? <text fg={theme.success}>✓</text> : undefined,
+          gutter: connected && onboarded() ? <text fg={theme.success}>✓</text> : undefined,
           async onSelect() {
             if (consoleManaged) return
 
diff --git a/packages/opencode/src/cli/cmd/tui/component/dialog-workspace-create.tsx b/packages/opencode/src/cli/cmd/tui/component/dialog-workspace-create.tsx
index 899ab42ee1..009bb74d2c 100644
--- a/packages/opencode/src/cli/cmd/tui/component/dialog-workspace-create.tsx
+++ b/packages/opencode/src/cli/cmd/tui/component/dialog-workspace-create.tsx
@@ -6,8 +6,7 @@ import { useSync } from "@tui/context/sync"
 import { useProject } from "@tui/context/project"
 import { createMemo, createSignal, onMount } from "solid-js"
 import { setTimeout as sleep } from "node:timers/promises"
-import { errorData, errorMessage } from "@/util/error"
-import * as Log from "@opencode-ai/core/util/log"
+import { errorMessage } from "@/util/error"
 import { useSDK } from "../context/sdk"
 import { useToast } from "../ui/toast"
 
@@ -17,8 +16,6 @@ type Adaptor = {
   description: string
 }
 
-const log = Log.Default.clone().tag("service", "tui-workspace")
-
 function scoped(sdk: ReturnType<typeof useSDK>, sync: ReturnType<typeof useSync>, workspaceID: string) {
   return createOpencodeClient({
     baseUrl: sdk.url,
@@ -37,18 +34,9 @@ export async function openWorkspaceSession(input: {
   workspaceID: string
 }) {
   const client = scoped(input.sdk, input.sync, input.workspaceID)
-  log.info("workspace session create requested", {
-    workspaceID: input.workspaceID,
-  })
 
   while (true) {
-    const result = await client.session.create({ workspace: input.workspaceID }).catch((err) => {
-      log.error("workspace session create request failed", {
-        workspaceID: input.workspaceID,
-        error: errorData(err),
-      })
-      return undefined
-    })
+    const result = await client.session.create({ workspace: input.workspaceID }).catch(() => undefined)
     if (!result) {
       input.toast.show({
         message: "Failed to create workspace session",
@@ -56,24 +44,11 @@ export async function openWorkspaceSession(input: {
       })
       return
     }
-    log.info("workspace session create response", {
-      workspaceID: input.workspaceID,
-      status: result.response?.status,
-      sessionID: result.data?.id,
-    })
     if (result.response?.status && result.response.status >= 500 && result.response.status < 600) {
-      log.warn("workspace session create retrying after server error", {
-        workspaceID: input.workspaceID,
-        status: result.response.status,
-      })
       await sleep(1000)
       continue
     }
     if (!result.data) {
-      log.error("workspace session create returned no data", {
-        workspaceID: input.workspaceID,
-        status: result.response?.status,
-      })
       input.toast.show({
         message: "Failed to create workspace session",
         variant: "error",
@@ -85,10 +60,6 @@ export async function openWorkspaceSession(input: {
       type: "session",
       sessionID: result.data.id,
     })
-    log.info("workspace session create complete", {
-      workspaceID: input.workspaceID,
-      sessionID: result.data.id,
-    })
     input.dialog.clear()
     return
   }
@@ -104,27 +75,10 @@ export async function restoreWorkspaceSession(input: {
   sessionID: string
   done?: () => void
 }) {
-  log.info("session restore requested", {
-    workspaceID: input.workspaceID,
-    sessionID: input.sessionID,
-  })
   const result = await input.sdk.client.experimental.workspace
     .sessionRestore({ id: input.workspaceID, sessionID: input.sessionID })
-    .catch((err) => {
-      log.error("session restore request failed", {
-        workspaceID: input.workspaceID,
-        sessionID: input.sessionID,
-        error: errorData(err),
-      })
-      return undefined
-    })
+    .catch(() => undefined)
   if (!result?.data) {
-    log.error("session restore failed", {
-      workspaceID: input.workspaceID,
-      sessionID: input.sessionID,
-      status: result?.response?.status,
-      error: result?.error ? errorData(result.error) : undefined,
-    })
     input.toast.show({
       message: `Failed to restore session: ${errorMessage(result?.error ?? "no response")}`,
       variant: "error",
@@ -132,33 +86,11 @@ export async function restoreWorkspaceSession(input: {
     return
   }
 
-  log.info("session restore response", {
-    workspaceID: input.workspaceID,
-    sessionID: input.sessionID,
-    status: result.response?.status,
-    total: result.data.total,
-  })
-
   input.project.workspace.set(input.workspaceID)
 
-  try {
-    await input.sync.bootstrap({ fatal: false })
-  } catch (e) {}
+  await input.sync.bootstrap({ fatal: false }).catch(() => undefined)
 
-  await Promise.all([input.project.workspace.sync(), input.sync.session.sync(input.sessionID)]).catch((err) => {
-    log.error("session restore refresh failed", {
-      workspaceID: input.workspaceID,
-      sessionID: input.sessionID,
-      error: errorData(err),
-    })
-    throw err
-  })
-
-  log.info("session restore complete", {
-    workspaceID: input.workspaceID,
-    sessionID: input.sessionID,
-    total: result.data.total,
-  })
+  await Promise.all([input.project.workspace.sync(), input.sync.session.sync(input.sessionID)])
 
   input.toast.show({
     message: "Session restored into the new workspace",
@@ -230,47 +162,26 @@ export function DialogWorkspaceCreate(props: { onSelect: (workspaceID: string) =
   const create = async (type: string) => {
     if (creating()) return
     setCreating(type)
-    log.info("workspace create requested", {
-      type,
-    })
 
-    const result = await sdk.client.experimental.workspace.create({ type, branch: null }).catch((err) => {
+    const result = await sdk.client.experimental.workspace.create({ type, branch: null }).catch(() => {
       toast.show({
         message: "Creating workspace failed",
         variant: "error",
       })
-      log.error("workspace create request failed", {
-        type,
-        error: errorData(err),
-      })
       return undefined
     })
 
     const workspace = result?.data
     if (!workspace) {
       setCreating(undefined)
-      log.error("workspace create failed", {
-        type,
-        status: result?.response.status,
-        error: result?.error ? errorData(result.error) : undefined,
-      })
       toast.show({
         message: `Failed to create workspace: ${errorMessage(result?.error ?? "no response")}`,
         variant: "error",
       })
       return
     }
-    log.info("workspace create response", {
-      type,
-      workspaceID: workspace.id,
-      status: result.response?.status,
-    })
 
     await project.workspace.sync()
-    log.info("workspace create synced", {
-      type,
-      workspaceID: workspace.id,
-    })
     await props.onSelect(workspace.id)
     setCreating(undefined)
   }
diff --git a/packages/opencode/src/cli/cmd/tui/component/use-connected.tsx b/packages/opencode/src/cli/cmd/tui/component/use-connected.tsx
new file mode 100644
index 0000000000..700855c113
--- /dev/null
+++ b/packages/opencode/src/cli/cmd/tui/component/use-connected.tsx
@@ -0,0 +1,9 @@
+import { createMemo } from "solid-js"
+import { useSync } from "@tui/context/sync"
+
+export function useConnected() {
+  const sync = useSync()
+  return createMemo(() =>
+    sync.data.provider.some((x) => x.id !== "opencode" || Object.values(x.models).some((y) => y.cost?.input !== 0)),
+  )
+}
diff --git a/packages/opencode/src/cli/cmd/tui/routes/session/footer.tsx b/packages/opencode/src/cli/cmd/tui/routes/session/footer.tsx
index 8ace2fff37..c3a96254e9 100644
--- a/packages/opencode/src/cli/cmd/tui/routes/session/footer.tsx
+++ b/packages/opencode/src/cli/cmd/tui/routes/session/footer.tsx
@@ -2,7 +2,7 @@ import { createMemo, Match, onCleanup, onMount, Show, Switch } from "solid-js"
 import { useTheme } from "../../context/theme"
 import { useSync } from "../../context/sync"
 import { useDirectory } from "../../context/directory"
-import { useConnected } from "../../component/dialog-model"
+import { useConnected } from "../../component/use-connected"
 import { createStore } from "solid-js/store"
 import { useRoute } from "../../context/route"
 
diff --git a/packages/opencode/src/cli/cmd/uninstall.ts b/packages/opencode/src/cli/cmd/uninstall.ts
index dc076913b8..254022dd5d 100644
--- a/packages/opencode/src/cli/cmd/uninstall.ts
+++ b/packages/opencode/src/cli/cmd/uninstall.ts
@@ -1,7 +1,6 @@
 import type { Argv } from "yargs"
 import { UI } from "../ui"
 import * as prompts from "@clack/prompts"
-import { AppRuntime } from "@/effect/app-runtime"
 import { Installation } from "../../installation"
 import { Global } from "@opencode-ai/core/global"
 import fs from "fs/promises"
@@ -58,7 +57,7 @@ export const UninstallCommand = {
     UI.empty()
     prompts.intro("Uninstall OpenCode")
 
-    const method = await AppRuntime.runPromise(Installation.Service.use((svc) => svc.method()))
+    const method = await Installation.method()
     prompts.log.info(`Installation method: ${method}`)
 
     const targets = await collectRemovalTargets(args, method)
diff --git a/packages/opencode/src/cli/cmd/upgrade.ts b/packages/opencode/src/cli/cmd/upgrade.ts
index a60b1fb0bf..3c1604a0b8 100644
--- a/packages/opencode/src/cli/cmd/upgrade.ts
+++ b/packages/opencode/src/cli/cmd/upgrade.ts
@@ -1,7 +1,6 @@
 import type { Argv } from "yargs"
 import { UI } from "../ui"
 import * as prompts from "@clack/prompts"
-import { AppRuntime } from "@/effect/app-runtime"
 import { Installation } from "../../installation"
 import { InstallationVersion } from "@opencode-ai/core/installation/version"
 
@@ -26,7 +25,7 @@ export const UpgradeCommand = {
     UI.println(UI.logo("  "))
     UI.empty()
     prompts.intro("Upgrade")
-    const detectedMethod = await AppRuntime.runPromise(Installation.Service.use((svc) => svc.method()))
+    const detectedMethod = await Installation.method()
     const method = (args.method as Installation.Method) ?? detectedMethod
     if (method === "unknown") {
       prompts.log.error(`opencode is installed to ${process.execPath} and may be managed by a package manager`)
@@ -44,9 +43,7 @@ export const UpgradeCommand = {
       }
     }
     prompts.log.info("Using method: " + method)
-    const target = args.target
-      ? args.target.replace(/^v/, "")
-      : await AppRuntime.runPromise(Installation.Service.use((svc) => svc.latest()))
+    const target = args.target ? args.target.replace(/^v/, "") : await Installation.latest()
 
     if (InstallationVersion === target) {
       prompts.log.warn(`opencode upgrade skipped: ${target} is already installed`)
@@ -57,9 +54,7 @@ export const UpgradeCommand = {
     prompts.log.info(`From ${InstallationVersion} → ${target}`)
     const spinner = prompts.spinner()
     spinner.start("Upgrading...")
-    const err = await AppRuntime.runPromise(Installation.Service.use((svc) => svc.upgrade(method, target))).catch(
-      (err) => err,
-    )
+    const err = await Installation.upgrade(method, target).catch((err) => err)
     if (err) {
       spinner.stop("Upgrade failed", 1)
       if (err instanceof Installation.UpgradeFailedError) {
diff --git a/packages/opencode/src/cli/upgrade.ts b/packages/opencode/src/cli/upgrade.ts
index da0451c55c..18f6bc45f5 100644
--- a/packages/opencode/src/cli/upgrade.ts
+++ b/packages/opencode/src/cli/upgrade.ts
@@ -8,8 +8,8 @@ import { InstallationVersion } from "@opencode-ai/core/installation/version"
 export async function upgrade() {
   const config = await AppRuntime.runPromise(Config.Service.use((cfg) => cfg.getGlobal()))
   if (config.autoupdate === false || Flag.OPENCODE_DISABLE_AUTOUPDATE) return
-  const method = await AppRuntime.runPromise(Installation.Service.use((svc) => svc.method()))
-  const latest = await AppRuntime.runPromise(Installation.Service.use((svc) => svc.latest(method))).catch(() => {})
+  const method = await Installation.method()
+  const latest = await Installation.latest(method).catch(() => {})
   if (!latest) return
 
   if (Flag.OPENCODE_ALWAYS_NOTIFY_UPDATE) {
@@ -27,7 +27,7 @@ export async function upgrade() {
   }
 
   if (method === "unknown") return
-  await AppRuntime.runPromise(Installation.Service.use((svc) => svc.upgrade(method, latest)))
+  await Installation.upgrade(method, latest)
     .then(() => Bus.publish(Installation.Event.Updated, { version: latest }))
     .catch(() => {})
 }
diff --git a/packages/opencode/src/config/config.ts b/packages/opencode/src/config/config.ts
index d7cfb34eee..4642fe3885 100644
--- a/packages/opencode/src/config/config.ts
+++ b/packages/opencode/src/config/config.ts
@@ -99,6 +99,9 @@ export const Info = Schema.Struct({
   $schema: Schema.optional(Schema.String).annotate({
     description: "JSON schema reference for configuration validation",
   }),
+  shell: Schema.optional(Schema.String).annotate({
+    description: "Default shell to use for terminal and bash tool",
+  }),
   logLevel: Schema.optional(LogLevelRef).annotate({ description: "Log level" }),
   server: Schema.optional(ConfigServer.Server).annotate({
     description: "Server configuration for opencode serve and web commands",
@@ -311,10 +314,7 @@ function patchJsonc(input: string, patch: unknown, path: string[] = []): string
     return applyEdits(input, edits)
   }
 
-  return Object.entries(patch).reduce((result, [key, value]) => {
-    if (value === undefined) return result
-    return patchJsonc(result, value, [...path, key])
-  }, input)
+  return Object.entries(patch).reduce((result, [key, value]) => patchJsonc(result, value, [...path, key]), input)
 }
 
 function writable(info: Info) {
@@ -322,6 +322,13 @@ function writable(info: Info) {
   return next
 }
 
+function writableGlobal(info: Info) {
+  const next = writable(info)
+  // When a user changes config from a value back to default in the Desktop app, we don't want to leave a blank `"shell": "",` key
+  if ("shell" in next && next.shell === "") return { ...next, shell: undefined }
+  return next
+}
+
 export const ConfigDirectoryTypoError = NamedError.create(
   "ConfigDirectoryTypoError",
   z.object({
@@ -754,15 +761,16 @@ export const layer = Layer.effect(
     const updateGlobal = Effect.fn("Config.updateGlobal")(function* (config: Info) {
       const file = globalConfigFile()
       const before = (yield* readConfigFile(file)) ?? "{}"
+      const patch = writableGlobal(config)
 
       let next: Info
       if (!file.endsWith(".jsonc")) {
         const existing = ConfigParse.effectSchema(Info, ConfigParse.jsonc(before, file), file)
-        const merged = mergeDeep(writable(existing), writable(config))
+        const merged = mergeDeep(writable(existing), patch)
         yield* fs.writeFileString(file, JSON.stringify(merged, null, 2)).pipe(Effect.orDie)
         next = merged
       } else {
-        const updated = patchJsonc(before, writable(config))
+        const updated = patchJsonc(before, patch)
         next = ConfigParse.effectSchema(Info, ConfigParse.jsonc(updated, file), file)
         yield* fs.writeFileString(file, updated).pipe(Effect.orDie)
       }
diff --git a/packages/opencode/src/installation/index.ts b/packages/opencode/src/installation/index.ts
index 84fd02cb39..35bb310e02 100644
--- a/packages/opencode/src/installation/index.ts
+++ b/packages/opencode/src/installation/index.ts
@@ -8,9 +8,10 @@ import z from "zod"
 import { BusEvent } from "@/bus/bus-event"
 import { Flag } from "@opencode-ai/core/flag/flag"
 import { Log } from "../util"
-
+import { makeRuntime } from "@opencode-ai/core/effect/runtime"
 import semver from "semver"
 import { InstallationChannel, InstallationVersion } from "@opencode-ai/core/installation/version"
+import { NpmConfig } from "@opencode-ai/core/npm-config"
 
 const log = Log.create({ service: "installation" })
 
@@ -132,17 +133,6 @@ export const layer: Layer.Layer<Service, never, HttpClient.HttpClient | ChildPro
         Effect.catch(() => Effect.succeed({ code: ChildProcessSpawner.ExitCode(1), stdout: "", stderr: "" })),
       )
 
-      const viewVersion = Effect.fnUntraced(function* (method: "npm" | "pnpm" | "bun", spec: string) {
-        const args = method === "bun" ? ["pm", "view", spec, "version", "--json"] : ["view", spec, "version", "--json"]
-        const result = yield* run([method, ...args])
-        if (result.code !== 0 || !result.stdout.trim()) {
-          return yield* new UpgradeFailedError({
-            stderr: result.stderr || result.stdout || `Failed to resolve ${spec}`,
-          })
-        }
-        return yield* Schema.decodeUnknownEffect(Schema.fromJsonString(Schema.String))(result.stdout)
-      })
-
       const getBrewFormula = Effect.fnUntraced(function* () {
         const tapFormula = yield* text(["brew", "list", "--formula", "anomalyco/tap/opencode"])
         if (tapFormula.includes("opencode")) return "anomalyco/tap/opencode"
@@ -173,163 +163,165 @@ export const layer: Layer.Layer<Service, never, HttpClient.HttpClient | ChildPro
         Effect.orDie,
       )
 
-      const methodImpl = Effect.fn("Installation.method")(function* () {
-        if (process.execPath.includes(path.join(".opencode", "bin"))) return "curl" as Method
-        if (process.execPath.includes(path.join(".local", "bin"))) return "curl" as Method
-        const exec = process.execPath.toLowerCase()
-
-        const checks: Array<{ name: Method; command: () => Effect.Effect<string> }> = [
-          { name: "npm", command: () => text(["npm", "list", "-g", "--depth=0"]) },
-          { name: "yarn", command: () => text(["yarn", "global", "list"]) },
-          { name: "pnpm", command: () => text(["pnpm", "list", "-g", "--depth=0"]) },
-          { name: "bun", command: () => text(["bun", "pm", "ls", "-g"]) },
-          { name: "brew", command: () => text(["brew", "list", "--formula", "opencode"]) },
-          { name: "scoop", command: () => text(["scoop", "list", "opencode"]) },
-          { name: "choco", command: () => text(["choco", "list", "--limit-output", "opencode"]) },
-        ]
-
-        checks.sort((a, b) => {
-          const aMatches = exec.includes(a.name)
-          const bMatches = exec.includes(b.name)
-          if (aMatches && !bMatches) return -1
-          if (!aMatches && bMatches) return 1
-          return 0
-        })
-
-        for (const check of checks) {
-          const output = yield* check.command()
-          const installedName =
-            check.name === "brew" || check.name === "choco" || check.name === "scoop" ? "opencode" : "opencode-ai"
-          if (output.includes(installedName)) {
-            return check.name
-          }
-        }
-
-        return "unknown" as Method
-      })
-
-      const latestImpl = Effect.fn("Installation.latest")(function* (installMethod?: Method) {
-        const detectedMethod = installMethod || (yield* methodImpl())
-
-        if (detectedMethod === "brew") {
-          const formula = yield* getBrewFormula()
-          if (formula.includes("/")) {
-            const infoJson = yield* text(["brew", "info", "--json=v2", formula])
-            const info = yield* Schema.decodeUnknownEffect(Schema.fromJsonString(BrewInfoV2))(infoJson)
-            return info.formulae[0].versions.stable
-          }
-          const response = yield* httpOk.execute(
-            HttpClientRequest.get("https://formulae.brew.sh/api/formula/opencode.json").pipe(
-              HttpClientRequest.acceptJson,
-            ),
-          )
-          const data = yield* HttpClientResponse.schemaBodyJson(BrewFormula)(response)
-          return data.versions.stable
-        }
-
-        if (detectedMethod === "npm" || detectedMethod === "bun" || detectedMethod === "pnpm") {
-          return yield* viewVersion(detectedMethod, `opencode-ai@${InstallationChannel}`)
-        }
-
-        if (detectedMethod === "choco") {
-          const response = yield* httpOk.execute(
-            HttpClientRequest.get(
-              "https://community.chocolatey.org/api/v2/Packages?$filter=Id%20eq%20%27opencode%27%20and%20IsLatestVersion&$select=Version",
-            ).pipe(HttpClientRequest.setHeaders({ Accept: "application/json;odata=verbose" })),
-          )
-          const data = yield* HttpClientResponse.schemaBodyJson(ChocoPackage)(response)
-          return data.d.results[0].Version
-        }
-
-        if (detectedMethod === "scoop") {
-          const response = yield* httpOk.execute(
-            HttpClientRequest.get(
-              "https://raw.githubusercontent.com/ScoopInstaller/Main/master/bucket/opencode.json",
-            ).pipe(HttpClientRequest.setHeaders({ Accept: "application/json" })),
-          )
-          const data = yield* HttpClientResponse.schemaBodyJson(ScoopManifest)(response)
-          return data.version
-        }
-
-        const response = yield* httpOk.execute(
-          HttpClientRequest.get("https://api.github.com/repos/anomalyco/opencode/releases/latest").pipe(
-            HttpClientRequest.acceptJson,
-          ),
-        )
-        const data = yield* HttpClientResponse.schemaBodyJson(GitHubRelease)(response)
-        return data.tag_name.replace(/^v/, "")
-      }, Effect.orDie)
-
-      const upgradeImpl = Effect.fn("Installation.upgrade")(function* (m: Method, target: string) {
-        let result: { code: ChildProcessSpawner.ExitCode; stdout: string; stderr: string } | undefined
-        switch (m) {
-          case "curl":
-            result = yield* upgradeCurl(target)
-            break
-          case "npm":
-            result = yield* run(["npm", "install", "-g", `opencode-ai@${target}`])
-            break
-          case "pnpm":
-            result = yield* run(["pnpm", "install", "-g", `opencode-ai@${target}`])
-            break
-          case "bun":
-            result = yield* run(["bun", "install", "-g", `opencode-ai@${target}`])
-            break
-          case "brew": {
-            const formula = yield* getBrewFormula()
-            const env = { HOMEBREW_NO_AUTO_UPDATE: "1" }
-            if (formula.includes("/")) {
-              const tap = yield* run(["brew", "tap", "anomalyco/tap"], { env })
-              if (tap.code !== 0) {
-                result = tap
-                break
-              }
-              const repo = yield* text(["brew", "--repo", "anomalyco/tap"])
-              const dir = repo.trim()
-              if (dir) {
-                const pull = yield* run(["git", "pull", "--ff-only"], { cwd: dir, env })
-                if (pull.code !== 0) {
-                  result = pull
-                  break
-                }
-              }
-            }
-            result = yield* run(["brew", "upgrade", formula], { env })
-            break
-          }
-          case "choco":
-            result = yield* run(["choco", "upgrade", "opencode", `--version=${target}`, "-y"])
-            break
-          case "scoop":
-            result = yield* run(["scoop", "install", `opencode@${target}`])
-            break
-          default:
-            return yield* new UpgradeFailedError({ stderr: `Unknown method: ${m}` })
-        }
-        if (!result || result.code !== 0) {
-          const stderr = m === "choco" ? "not running from an elevated command shell" : result?.stderr || ""
-          return yield* new UpgradeFailedError({ stderr })
-        }
-        log.info("upgraded", {
-          method: m,
-          target,
-          stdout: result.stdout,
-          stderr: result.stderr,
-        })
-        yield* text([process.execPath, "--version"])
-      })
-
-      return Service.of({
+      const result: Interface = {
         info: Effect.fn("Installation.info")(function* () {
           return {
             version: InstallationVersion,
-            latest: yield* latestImpl(),
+            latest: yield* result.latest(),
           }
         }),
-        method: methodImpl,
-        latest: latestImpl,
-        upgrade: upgradeImpl,
-      })
+        method: Effect.fn("Installation.method")(function* () {
+          if (process.execPath.includes(path.join(".opencode", "bin"))) return "curl" as Method
+          if (process.execPath.includes(path.join(".local", "bin"))) return "curl" as Method
+          const exec = process.execPath.toLowerCase()
+
+          const checks: Array<{ name: Method; command: () => Effect.Effect<string> }> = [
+            { name: "npm", command: () => text(["npm", "list", "-g", "--depth=0"]) },
+            { name: "yarn", command: () => text(["yarn", "global", "list"]) },
+            { name: "pnpm", command: () => text(["pnpm", "list", "-g", "--depth=0"]) },
+            { name: "bun", command: () => text(["bun", "pm", "ls", "-g"]) },
+            { name: "brew", command: () => text(["brew", "list", "--formula", "opencode"]) },
+            { name: "scoop", command: () => text(["scoop", "list", "opencode"]) },
+            { name: "choco", command: () => text(["choco", "list", "--limit-output", "opencode"]) },
+          ]
+
+          checks.sort((a, b) => {
+            const aMatches = exec.includes(a.name)
+            const bMatches = exec.includes(b.name)
+            if (aMatches && !bMatches) return -1
+            if (!aMatches && bMatches) return 1
+            return 0
+          })
+
+          for (const check of checks) {
+            const output = yield* check.command()
+            const installedName =
+              check.name === "brew" || check.name === "choco" || check.name === "scoop" ? "opencode" : "opencode-ai"
+            if (output.includes(installedName)) {
+              return check.name
+            }
+          }
+
+          return "unknown" as Method
+        }),
+        latest: Effect.fn("Installation.latest")(function* (installMethod?: Method) {
+          const detectedMethod = installMethod || (yield* result.method())
+
+          if (detectedMethod === "brew") {
+            const formula = yield* getBrewFormula()
+            if (formula.includes("/")) {
+              const infoJson = yield* text(["brew", "info", "--json=v2", formula])
+              const info = yield* Schema.decodeUnknownEffect(Schema.fromJsonString(BrewInfoV2))(infoJson)
+              return info.formulae[0].versions.stable
+            }
+            const response = yield* httpOk.execute(
+              HttpClientRequest.get("https://formulae.brew.sh/api/formula/opencode.json").pipe(
+                HttpClientRequest.acceptJson,
+              ),
+            )
+            const data = yield* HttpClientResponse.schemaBodyJson(BrewFormula)(response)
+            return data.versions.stable
+          }
+
+          if (detectedMethod === "npm" || detectedMethod === "bun" || detectedMethod === "pnpm") {
+            const response = yield* httpOk.execute(
+              HttpClientRequest.get(
+                `${yield* NpmConfig.registry(process.cwd())}/opencode-ai/${InstallationChannel}`,
+              ).pipe(HttpClientRequest.acceptJson),
+            )
+            const data = yield* HttpClientResponse.schemaBodyJson(NpmPackage)(response)
+            return data.version
+          }
+
+          if (detectedMethod === "choco") {
+            const response = yield* httpOk.execute(
+              HttpClientRequest.get(
+                "https://community.chocolatey.org/api/v2/Packages?$filter=Id%20eq%20%27opencode%27%20and%20IsLatestVersion&$select=Version",
+              ).pipe(HttpClientRequest.setHeaders({ Accept: "application/json;odata=verbose" })),
+            )
+            const data = yield* HttpClientResponse.schemaBodyJson(ChocoPackage)(response)
+            return data.d.results[0].Version
+          }
+
+          if (detectedMethod === "scoop") {
+            const response = yield* httpOk.execute(
+              HttpClientRequest.get(
+                "https://raw.githubusercontent.com/ScoopInstaller/Main/master/bucket/opencode.json",
+              ).pipe(HttpClientRequest.setHeaders({ Accept: "application/json" })),
+            )
+            const data = yield* HttpClientResponse.schemaBodyJson(ScoopManifest)(response)
+            return data.version
+          }
+
+          const response = yield* httpOk.execute(
+            HttpClientRequest.get("https://api.github.com/repos/anomalyco/opencode/releases/latest").pipe(
+              HttpClientRequest.acceptJson,
+            ),
+          )
+          const data = yield* HttpClientResponse.schemaBodyJson(GitHubRelease)(response)
+          return data.tag_name.replace(/^v/, "")
+        }, Effect.orDie),
+        upgrade: Effect.fn("Installation.upgrade")(function* (m: Method, target: string) {
+          let upgradeResult: { code: ChildProcessSpawner.ExitCode; stdout: string; stderr: string } | undefined
+          switch (m) {
+            case "curl":
+              upgradeResult = yield* upgradeCurl(target)
+              break
+            case "npm":
+              upgradeResult = yield* run(["npm", "install", "-g", `opencode-ai@${target}`])
+              break
+            case "pnpm":
+              upgradeResult = yield* run(["pnpm", "install", "-g", `opencode-ai@${target}`])
+              break
+            case "bun":
+              upgradeResult = yield* run(["bun", "install", "-g", `opencode-ai@${target}`])
+              break
+            case "brew": {
+              const formula = yield* getBrewFormula()
+              const env = { HOMEBREW_NO_AUTO_UPDATE: "1" }
+              if (formula.includes("/")) {
+                const tap = yield* run(["brew", "tap", "anomalyco/tap"], { env })
+                if (tap.code !== 0) {
+                  upgradeResult = tap
+                  break
+                }
+                const repo = yield* text(["brew", "--repo", "anomalyco/tap"])
+                const dir = repo.trim()
+                if (dir) {
+                  const pull = yield* run(["git", "pull", "--ff-only"], { cwd: dir, env })
+                  if (pull.code !== 0) {
+                    upgradeResult = pull
+                    break
+                  }
+                }
+              }
+              upgradeResult = yield* run(["brew", "upgrade", formula], { env })
+              break
+            }
+            case "choco":
+              upgradeResult = yield* run(["choco", "upgrade", "opencode", `--version=${target}`, "-y"])
+              break
+            case "scoop":
+              upgradeResult = yield* run(["scoop", "install", `opencode@${target}`])
+              break
+            default:
+              return yield* new UpgradeFailedError({ stderr: `Unknown method: ${m}` })
+          }
+          if (!upgradeResult || upgradeResult.code !== 0) {
+            const stderr = m === "choco" ? "not running from an elevated command shell" : upgradeResult?.stderr || ""
+            return yield* new UpgradeFailedError({ stderr })
+          }
+          log.info("upgraded", {
+            method: m,
+            target,
+            stdout: upgradeResult.stdout,
+            stderr: upgradeResult.stderr,
+          })
+          yield* text([process.execPath, "--version"])
+        }),
+      }
+
+      return Service.of(result)
     }),
   )
 
@@ -338,4 +330,10 @@ export const defaultLayer = layer.pipe(
   Layer.provide(CrossSpawnSpawner.defaultLayer),
 )
 
+const { runPromise } = makeRuntime(Service, defaultLayer)
+
+export const latest = (...args: Parameters<Interface["latest"]>) => runPromise((s) => s.latest(...args))
+export const method = () => runPromise((s) => s.method())
+export const upgrade = (...args: Parameters<Interface["upgrade"]>) => runPromise((s) => s.upgrade(...args))
+
 export * as Installation from "."
diff --git a/packages/opencode/src/pty/index.ts b/packages/opencode/src/pty/index.ts
index 918f4f86c6..5dcb9e7acf 100644
--- a/packages/opencode/src/pty/index.ts
+++ b/packages/opencode/src/pty/index.ts
@@ -1,17 +1,17 @@
 import { BusEvent } from "@/bus/bus-event"
 import { Bus } from "@/bus"
-import { InstanceState } from "@/effect"
+import { Config } from "@/config"
+import { InstanceState, EffectBridge } from "@/effect"
+import { lazy } from "@opencode-ai/core/util/lazy"
+import { Plugin } from "@/plugin"
 import { Instance } from "@/project/instance"
+import { Shell } from "@/shell/shell"
 import type { Proc } from "#pty"
 import { Log } from "../util"
-import { lazy } from "@opencode-ai/core/util/lazy"
-import { Shell } from "@/shell/shell"
-import { Plugin } from "@/plugin"
 import { PtyID } from "./schema"
 import { Effect, Layer, Context, Schema, Types } from "effect"
 import { zod } from "@/util/effect-zod"
 import { withStatics } from "@/util/schema"
-import { EffectBridge } from "@/effect"
 
 const log = Log.create({ service: "pty" })
 
@@ -117,8 +117,10 @@ export class Service extends Context.Service<Service, Interface>()("@opencode/Pt
 export const layer = Layer.effect(
   Service,
   Effect.gen(function* () {
+    const config = yield* Config.Service
     const bus = yield* Bus.Service
     const plugin = yield* Plugin.Service
+
     function teardown(session: Active) {
       try {
         session.process.kill()
@@ -174,8 +176,9 @@ export const layer = Layer.effect(
     const create = Effect.fn("Pty.create")(function* (input: CreateInput) {
       const s = yield* InstanceState.get(state)
       const bridge = yield* EffectBridge.make()
+      const cfg = yield* config.get()
       const id = PtyID.ascending()
-      const command = input.command || Shell.preferred()
+      const command = input.command || Shell.preferred(cfg.shell)
       const args = input.args || []
       if (Shell.login(command)) {
         args.push("-l")
@@ -360,6 +363,10 @@ export const layer = Layer.effect(
   }),
 )
 
-export const defaultLayer = layer.pipe(Layer.provide(Bus.layer), Layer.provide(Plugin.defaultLayer))
+export const defaultLayer = layer.pipe(
+  Layer.provide(Bus.layer),
+  Layer.provide(Plugin.defaultLayer),
+  Layer.provide(Config.defaultLayer),
+)
 
 export * as Pty from "."
diff --git a/packages/opencode/src/server/proxy.ts b/packages/opencode/src/server/proxy.ts
index 19a623cb0c..4d9bcd1174 100644
--- a/packages/opencode/src/server/proxy.ts
+++ b/packages/opencode/src/server/proxy.ts
@@ -101,7 +101,7 @@ const app = (upgrade: UpgradeWebSocket) =>
     }),
   )
 
-const log = Log.Default.clone().tag("service", "server-proxy")
+const log = Log.create({ service: "server-proxy" })
 
 export async function http(url: string | URL, extra: HeadersInit | undefined, req: Request, workspaceID: WorkspaceID) {
   if (!Workspace.isSyncing(workspaceID)) {
diff --git a/packages/opencode/src/server/routes/instance/httpapi/event.ts b/packages/opencode/src/server/routes/instance/httpapi/event.ts
new file mode 100644
index 0000000000..dc5fa9c530
--- /dev/null
+++ b/packages/opencode/src/server/routes/instance/httpapi/event.ts
@@ -0,0 +1,46 @@
+import { Bus } from "@/bus"
+import { Log } from "@/util"
+import { Effect } from "effect"
+import * as Stream from "effect/Stream"
+import { HttpRouter, HttpServerResponse } from "effect/unstable/http"
+
+const log = Log.create({ service: "server" })
+
+export const EventPaths = {
+  event: "/event",
+} as const
+
+function eventData(data: unknown) {
+  return `data: ${JSON.stringify(data)}\n\n`
+}
+
+export const eventRoute = HttpRouter.add(
+  "GET",
+  EventPaths.event,
+  Effect.gen(function* () {
+    const bus = yield* Bus.Service
+    const events = bus.subscribeAll().pipe(Stream.takeUntil((event) => event.type === Bus.InstanceDisposed.type))
+    const heartbeat = Stream.tick("10 seconds").pipe(
+      Stream.drop(1),
+      Stream.map(() => ({ type: "server.heartbeat", properties: {} })),
+    )
+
+    log.info("event connected")
+    return HttpServerResponse.stream(
+      Stream.make({ type: "server.connected", properties: {} }).pipe(
+        Stream.concat(events.pipe(Stream.merge(heartbeat, { haltStrategy: "left" }))),
+        Stream.map(eventData),
+        Stream.encodeText,
+        Stream.ensuring(Effect.sync(() => log.info("event disconnected"))),
+      ),
+      {
+        contentType: "text/event-stream",
+        headers: {
+          "Cache-Control": "no-cache, no-transform",
+          "X-Accel-Buffering": "no",
+          "X-Content-Type-Options": "nosniff",
+        },
+      },
+    )
+  }).pipe(Effect.provide(Bus.layer)),
+)
diff --git a/packages/opencode/src/server/routes/instance/httpapi/pty.ts b/packages/opencode/src/server/routes/instance/httpapi/pty.ts
new file mode 100644
index 0000000000..de29d96098
--- /dev/null
+++ b/packages/opencode/src/server/routes/instance/httpapi/pty.ts
@@ -0,0 +1,205 @@
+import { EffectBridge } from "@/effect"
+import { Pty } from "@/pty"
+import { PtyID } from "@/pty/schema"
+import { Effect, Layer, Schema } from "effect"
+import { HttpRouter, HttpServerRequest, HttpServerResponse } from "effect/unstable/http"
+import { HttpApi, HttpApiBuilder, HttpApiEndpoint, HttpApiError, HttpApiGroup, OpenApi } from "effect/unstable/httpapi"
+import * as Socket from "effect/unstable/socket/Socket"
+import { Authorization } from "./auth"
+
+const root = "/pty"
+const Params = Schema.Struct({
+  ptyID: PtyID,
+})
+const CursorQuery = Schema.Struct({
+  cursor: Schema.optional(Schema.String),
+})
+
+export const PtyPaths = {
+  list: root,
+  create: root,
+  get: `${root}/:ptyID`,
+  update: `${root}/:ptyID`,
+  remove: `${root}/:ptyID`,
+  connect: `${root}/:ptyID/connect`,
+} as const
+
+export const PtyApi = HttpApi.make("pty")
+  .add(
+    HttpApiGroup.make("pty")
+      .add(
+        HttpApiEndpoint.get("list", PtyPaths.list, {
+          success: Schema.Array(Pty.Info),
+        }).annotateMerge(
+          OpenApi.annotations({
+            identifier: "pty.list",
+            summary: "List PTY sessions",
+            description: "Get a list of all active pseudo-terminal (PTY) sessions managed by OpenCode.",
+          }),
+        ),
+        HttpApiEndpoint.post("create", PtyPaths.create, {
+          payload: Pty.CreateInput,
+          success: Pty.Info,
+        }).annotateMerge(
+          OpenApi.annotations({
+            identifier: "pty.create",
+            summary: "Create PTY session",
+            description: "Create a new pseudo-terminal (PTY) session for running shell commands and processes.",
+          }),
+        ),
+        HttpApiEndpoint.get("get", PtyPaths.get, {
+          params: { ptyID: PtyID },
+          success: Pty.Info,
+          error: HttpApiError.NotFound,
+        }).annotateMerge(
+          OpenApi.annotations({
+            identifier: "pty.get",
+            summary: "Get PTY session",
+            description: "Retrieve detailed information about a specific pseudo-terminal (PTY) session.",
+          }),
+        ),
+        HttpApiEndpoint.put("update", PtyPaths.update, {
+          params: { ptyID: PtyID },
+          payload: Pty.UpdateInput,
+          success: Pty.Info,
+          error: HttpApiError.NotFound,
+        }).annotateMerge(
+          OpenApi.annotations({
+            identifier: "pty.update",
+            summary: "Update PTY session",
+            description: "Update properties of an existing pseudo-terminal (PTY) session.",
+          }),
+        ),
+        HttpApiEndpoint.delete("remove", PtyPaths.remove, {
+          params: { ptyID: PtyID },
+          success: Schema.Boolean,
+        }).annotateMerge(
+          OpenApi.annotations({
+            identifier: "pty.remove",
+            summary: "Remove PTY session",
+            description: "Remove and terminate a specific pseudo-terminal (PTY) session.",
+          }),
+        ),
+      )
+      .annotateMerge(
+        OpenApi.annotations({
+          title: "pty",
+          description: "Experimental HttpApi PTY routes.",
+        }),
+      )
+      .middleware(Authorization),
+  )
+  .annotateMerge(
+    OpenApi.annotations({
+      title: "opencode experimental HttpApi",
+      version: "0.0.1",
+      description: "Experimental HttpApi surface for selected instance routes.",
+    }),
+  )
+
+export const ptyHandlers = Layer.unwrap(
+  Effect.gen(function* () {
+    const pty = yield* Pty.Service
+
+    const list = Effect.fn("PtyHttpApi.list")(function* () {
+      return yield* pty.list()
+    })
+
+    const create = Effect.fn("PtyHttpApi.create")(function* (ctx: { payload: typeof Pty.CreateInput.Type }) {
+      const bridge = yield* EffectBridge.make()
+      return yield* Effect.promise(() =>
+        bridge.promise(
+          pty.create({
+            ...ctx.payload,
+            args: ctx.payload.args ? [...ctx.payload.args] : undefined,
+            env: ctx.payload.env ? { ...ctx.payload.env } : undefined,
+          }),
+        ),
+      )
+    })
+
+    const get = Effect.fn("PtyHttpApi.get")(function* (ctx: { params: { ptyID: PtyID } }) {
+      const info = yield* pty.get(ctx.params.ptyID)
+      if (!info) return yield* new HttpApiError.NotFound({})
+      return info
+    })
+
+    const update = Effect.fn("PtyHttpApi.update")(function* (ctx: {
+      params: { ptyID: PtyID }
+      payload: typeof Pty.UpdateInput.Type
+    }) {
+      const info = yield* pty.update(ctx.params.ptyID, {
+        ...ctx.payload,
+        size: ctx.payload.size ? { ...ctx.payload.size } : undefined,
+      })
+      if (!info) return yield* new HttpApiError.NotFound({})
+      return info
+    })
+
+    const remove = Effect.fn("PtyHttpApi.remove")(function* (ctx: { params: { ptyID: PtyID } }) {
+      yield* pty.remove(ctx.params.ptyID)
+      return true
+    })
+
+    return HttpApiBuilder.group(PtyApi, "pty", (handlers) =>
+      handlers
+        .handle("list", list)
+        .handle("create", create)
+        .handle("get", get)
+        .handle("update", update)
+        .handle("remove", remove),
+    )
+  }),
+)
+
+export const ptyConnectRoute = HttpRouter.add(
+  "GET",
+  PtyPaths.connect,
+  Effect.gen(function* () {
+    const pty = yield* Pty.Service
+    const params = yield* HttpRouter.schemaPathParams(Params)
+    if (!(yield* pty.get(params.ptyID))) return HttpServerResponse.empty({ status: 404 })
+
+    const query = yield* HttpServerRequest.schemaSearchParams(CursorQuery)
+    const parsedCursor = query.cursor === undefined ? undefined : Number(query.cursor)
+    const cursor =
+      parsedCursor !== undefined && Number.isSafeInteger(parsedCursor) && parsedCursor >= -1 ? parsedCursor : undefined
+    const socket = yield* Effect.orDie((yield* HttpServerRequest.HttpServerRequest).upgrade)
+    const write = yield* socket.writer
+    let closed = false
+    const adapter = {
+      get readyState() {
+        return closed ? 3 : 1
+      },
+      send: (data: string | Uint8Array | ArrayBuffer) => {
+        if (closed) return
+        Effect.runFork(
+          write(data instanceof ArrayBuffer ? new Uint8Array(data) : data).pipe(Effect.catch(() => Effect.void)),
+        )
+      },
+      close: (code?: number, reason?: string) => {
+        if (closed) return
+        closed = true
+        Effect.runFork(write(new Socket.CloseEvent(code, reason)).pipe(Effect.catch(() => Effect.void)))
+      },
+    }
+    const handler = yield* pty.connect(params.ptyID, adapter, cursor)
+    if (!handler) return HttpServerResponse.empty()
+
+    yield* socket
+      .runRaw((message) => {
+        handler.onMessage(typeof message === "string" ? message : message.slice().buffer)
+      })
+      .pipe(
+        Effect.catchReason("SocketError", "SocketCloseError", () => Effect.void),
+        Effect.ensuring(
+          Effect.sync(() => {
+            closed = true
+            handler.onClose()
+          }),
+        ),
+        Effect.orDie,
+      )
+    return HttpServerResponse.empty()
+  }).pipe(Effect.provide(Pty.defaultLayer)),
+)
diff --git a/packages/opencode/src/server/routes/instance/httpapi/server.ts b/packages/opencode/src/server/routes/instance/httpapi/server.ts
index adc70a43b3..0501ce5af2 100644
--- a/packages/opencode/src/server/routes/instance/httpapi/server.ts
+++ b/packages/opencode/src/server/routes/instance/httpapi/server.ts
@@ -1,25 +1,31 @@
 import { Effect, Layer, Schema } from "effect"
 import { HttpApiBuilder } from "effect/unstable/httpapi"
 import { HttpRouter, HttpServer, HttpServerRequest } from "effect/unstable/http"
+import { Bus } from "@/bus"
 import { AppRuntime } from "@/effect/app-runtime"
 import { InstanceRef, WorkspaceRef } from "@/effect/instance-ref"
 import { Observability } from "@/effect"
 import { InstanceBootstrap } from "@/project/bootstrap"
 import { Instance } from "@/project/instance"
+import { Pty } from "@/pty"
+import { Session } from "@/session"
 import { lazy } from "@/util/lazy"
 import { Filesystem } from "@/util"
 import { authorizationLayer } from "./auth"
 import { ConfigApi, configHandlers } from "./config"
+import { eventRoute } from "./event"
 import { FileApi, fileHandlers } from "./file"
 import { ExperimentalApi, experimentalHandlers } from "./experimental"
 import { InstanceApi, instanceHandlers } from "./instance"
 import { McpApi, mcpHandlers } from "./mcp"
 import { PermissionApi, permissionHandlers } from "./permission"
 import { ProjectApi, projectHandlers } from "./project"
+import { PtyApi, ptyConnectRoute, ptyHandlers } from "./pty"
 import { ProviderApi, providerHandlers } from "./provider"
 import { QuestionApi, questionHandlers } from "./question"
 import { SessionApi, sessionHandlers } from "./session"
 import { SyncApi, syncHandlers } from "./sync"
+import { TuiApi, tuiHandlers } from "./tui"
 import { WorkspaceApi, workspaceHandlers } from "./workspace"
 import { disposeMiddleware } from "./lifecycle"
 import { memoMap } from "@opencode-ai/core/effect/memo-map"
@@ -66,17 +72,25 @@ const instance = HttpRouter.middleware()(
 ).layer
 
 export const routes = Layer.mergeAll(
+  eventRoute,
+  ptyConnectRoute,
   HttpApiBuilder.layer(ConfigApi).pipe(Layer.provide(configHandlers)),
   HttpApiBuilder.layer(ExperimentalApi).pipe(Layer.provide(experimentalHandlers)),
   HttpApiBuilder.layer(FileApi).pipe(Layer.provide(fileHandlers)),
   HttpApiBuilder.layer(InstanceApi).pipe(Layer.provide(instanceHandlers)),
   HttpApiBuilder.layer(McpApi).pipe(Layer.provide(mcpHandlers)),
   HttpApiBuilder.layer(ProjectApi).pipe(Layer.provide(projectHandlers)),
+  HttpApiBuilder.layer(PtyApi).pipe(Layer.provide(ptyHandlers), Layer.provide(Pty.defaultLayer)),
   HttpApiBuilder.layer(QuestionApi).pipe(Layer.provide(questionHandlers)),
   HttpApiBuilder.layer(PermissionApi).pipe(Layer.provide(permissionHandlers)),
   HttpApiBuilder.layer(ProviderApi).pipe(Layer.provide(providerHandlers)),
   HttpApiBuilder.layer(SessionApi).pipe(Layer.provide(sessionHandlers)),
   HttpApiBuilder.layer(SyncApi).pipe(Layer.provide(syncHandlers)),
+  HttpApiBuilder.layer(TuiApi).pipe(
+    Layer.provide(tuiHandlers),
+    Layer.provide(Session.defaultLayer),
+    Layer.provide(Bus.layer),
+  ),
   HttpApiBuilder.layer(WorkspaceApi).pipe(Layer.provide(workspaceHandlers)),
 ).pipe(
   Layer.provide(authorizationLayer),
diff --git a/packages/opencode/src/server/routes/instance/httpapi/tui.ts b/packages/opencode/src/server/routes/instance/httpapi/tui.ts
new file mode 100644
index 0000000000..55f53df984
--- /dev/null
+++ b/packages/opencode/src/server/routes/instance/httpapi/tui.ts
@@ -0,0 +1,286 @@
+import { Bus } from "@/bus"
+import { TuiEvent } from "@/cli/cmd/tui/event"
+import { Session } from "@/session"
+import { SessionID } from "@/session/schema"
+import { Effect, Layer, Schema } from "effect"
+import { HttpApi, HttpApiBuilder, HttpApiEndpoint, HttpApiError, HttpApiGroup, OpenApi } from "effect/unstable/httpapi"
+import { nextTuiRequest, submitTuiResponse } from "../tui"
+import { Authorization } from "./auth"
+
+const root = "/tui"
+const CommandPayload = Schema.Struct({ command: Schema.String }).annotate({ identifier: "TuiCommandInput" })
+const TuiRequestPayload = Schema.Struct({
+  path: Schema.String,
+  body: Schema.Unknown,
+}).annotate({ identifier: "TuiRequest" })
+const TuiPublishPayload = Schema.Union([
+  Schema.Struct({ type: Schema.Literal(TuiEvent.PromptAppend.type), properties: TuiEvent.PromptAppend.properties }),
+  Schema.Struct({ type: Schema.Literal(TuiEvent.CommandExecute.type), properties: TuiEvent.CommandExecute.properties }),
+  Schema.Struct({ type: Schema.Literal(TuiEvent.ToastShow.type), properties: TuiEvent.ToastShow.properties }),
+  Schema.Struct({ type: Schema.Literal(TuiEvent.SessionSelect.type), properties: TuiEvent.SessionSelect.properties }),
+]).annotate({ identifier: "TuiEventInput" })
+
+const commandAliases = {
+  session_new: "session.new",
+  session_share: "session.share",
+  session_interrupt: "session.interrupt",
+  session_compact: "session.compact",
+  messages_page_up: "session.page.up",
+  messages_page_down: "session.page.down",
+  messages_line_up: "session.line.up",
+  messages_line_down: "session.line.down",
+  messages_half_page_up: "session.half.page.up",
+  messages_half_page_down: "session.half.page.down",
+  messages_first: "session.first",
+  messages_last: "session.last",
+  agent_cycle: "agent.cycle",
+} as const
+
+export const TuiPaths = {
+  appendPrompt: `${root}/append-prompt`,
+  openHelp: `${root}/open-help`,
+  openSessions: `${root}/open-sessions`,
+  openThemes: `${root}/open-themes`,
+  openModels: `${root}/open-models`,
+  submitPrompt: `${root}/submit-prompt`,
+  clearPrompt: `${root}/clear-prompt`,
+  executeCommand: `${root}/execute-command`,
+  showToast: `${root}/show-toast`,
+  publish: `${root}/publish`,
+  selectSession: `${root}/select-session`,
+  controlNext: `${root}/control/next`,
+  controlResponse: `${root}/control/response`,
+} as const
+
+export const TuiApi = HttpApi.make("tui")
+  .add(
+    HttpApiGroup.make("tui")
+      .add(
+        HttpApiEndpoint.post("appendPrompt", TuiPaths.appendPrompt, {
+          payload: TuiEvent.PromptAppend.properties,
+          success: Schema.Boolean,
+        }).annotateMerge(
+          OpenApi.annotations({
+            identifier: "tui.appendPrompt",
+            summary: "Append TUI prompt",
+            description: "Append prompt to the TUI.",
+          }),
+        ),
+        HttpApiEndpoint.post("openHelp", TuiPaths.openHelp, { success: Schema.Boolean }).annotateMerge(
+          OpenApi.annotations({
+            identifier: "tui.openHelp",
+            summary: "Open help dialog",
+            description: "Open the help dialog in the TUI to display user assistance information.",
+          }),
+        ),
+        HttpApiEndpoint.post("openSessions", TuiPaths.openSessions, { success: Schema.Boolean }).annotateMerge(
+          OpenApi.annotations({
+            identifier: "tui.openSessions",
+            summary: "Open sessions dialog",
+            description: "Open the session dialog.",
+          }),
+        ),
+        HttpApiEndpoint.post("openThemes", TuiPaths.openThemes, { success: Schema.Boolean }).annotateMerge(
+          OpenApi.annotations({
+            identifier: "tui.openThemes",
+            summary: "Open themes dialog",
+            description: "Open the theme dialog.",
+          }),
+        ),
+        HttpApiEndpoint.post("openModels", TuiPaths.openModels, { success: Schema.Boolean }).annotateMerge(
+          OpenApi.annotations({
+            identifier: "tui.openModels",
+            summary: "Open models dialog",
+            description: "Open the model dialog.",
+          }),
+        ),
+        HttpApiEndpoint.post("submitPrompt", TuiPaths.submitPrompt, { success: Schema.Boolean }).annotateMerge(
+          OpenApi.annotations({
+            identifier: "tui.submitPrompt",
+            summary: "Submit TUI prompt",
+            description: "Submit the prompt.",
+          }),
+        ),
+        HttpApiEndpoint.post("clearPrompt", TuiPaths.clearPrompt, { success: Schema.Boolean }).annotateMerge(
+          OpenApi.annotations({
+            identifier: "tui.clearPrompt",
+            summary: "Clear TUI prompt",
+            description: "Clear the prompt.",
+          }),
+        ),
+        HttpApiEndpoint.post("executeCommand", TuiPaths.executeCommand, {
+          payload: CommandPayload,
+          success: Schema.Boolean,
+        }).annotateMerge(
+          OpenApi.annotations({
+            identifier: "tui.executeCommand",
+            summary: "Execute TUI command",
+            description: "Execute a TUI command.",
+          }),
+        ),
+        HttpApiEndpoint.post("showToast", TuiPaths.showToast, {
+          payload: TuiEvent.ToastShow.properties,
+          success: Schema.Boolean,
+        }).annotateMerge(
+          OpenApi.annotations({
+            identifier: "tui.showToast",
+            summary: "Show TUI toast",
+            description: "Show a toast notification in the TUI.",
+          }),
+        ),
+        HttpApiEndpoint.post("publish", TuiPaths.publish, {
+          payload: TuiPublishPayload,
+          success: Schema.Boolean,
+        }).annotateMerge(
+          OpenApi.annotations({
+            identifier: "tui.publish",
+            summary: "Publish TUI event",
+            description: "Publish a TUI event.",
+          }),
+        ),
+        HttpApiEndpoint.post("selectSession", TuiPaths.selectSession, {
+          payload: TuiEvent.SessionSelect.properties,
+          success: Schema.Boolean,
+          error: HttpApiError.NotFound,
+        }).annotateMerge(
+          OpenApi.annotations({
+            identifier: "tui.selectSession",
+            summary: "Select session",
+            description: "Navigate the TUI to display the specified session.",
+          }),
+        ),
+        HttpApiEndpoint.get("controlNext", TuiPaths.controlNext, { success: TuiRequestPayload }).annotateMerge(
+          OpenApi.annotations({
+            identifier: "tui.control.next",
+            summary: "Get next TUI request",
+            description: "Retrieve the next TUI request from the queue for processing.",
+          }),
+        ),
+        HttpApiEndpoint.post("controlResponse", TuiPaths.controlResponse, {
+          payload: Schema.Unknown,
+          success: Schema.Boolean,
+        }).annotateMerge(
+          OpenApi.annotations({
+            identifier: "tui.control.response",
+            summary: "Submit TUI response",
+            description: "Submit a response to the TUI request queue to complete a pending request.",
+          }),
+        ),
+      )
+      .annotateMerge(OpenApi.annotations({ title: "tui", description: "Experimental HttpApi TUI routes." }))
+      .middleware(Authorization),
+  )
+  .annotateMerge(
+    OpenApi.annotations({
+      title: "opencode experimental HttpApi",
+      version: "0.0.1",
+      description: "Experimental HttpApi surface for selected instance routes.",
+    }),
+  )
+
+export const tuiHandlers = Layer.unwrap(
+  Effect.gen(function* () {
+    const bus = yield* Bus.Service
+    const session = yield* Session.Service
+    const publishCommand = (command: typeof TuiEvent.CommandExecute.properties.Type.command) =>
+      bus.publish(TuiEvent.CommandExecute, { command })
+
+    const appendPrompt = Effect.fn("TuiHttpApi.appendPrompt")(function* (ctx: {
+      payload: typeof TuiEvent.PromptAppend.properties.Type
+    }) {
+      yield* bus.publish(TuiEvent.PromptAppend, ctx.payload)
+      return true
+    })
+
+    const openHelp = Effect.fn("TuiHttpApi.openHelp")(function* () {
+      yield* publishCommand("help.show")
+      return true
+    })
+
+    const openSessions = Effect.fn("TuiHttpApi.openSessions")(function* () {
+      yield* publishCommand("session.list")
+      return true
+    })
+
+    const openThemes = Effect.fn("TuiHttpApi.openThemes")(function* () {
+      yield* publishCommand("session.list")
+      return true
+    })
+
+    const openModels = Effect.fn("TuiHttpApi.openModels")(function* () {
+      yield* publishCommand("model.list")
+      return true
+    })
+
+    const submitPrompt = Effect.fn("TuiHttpApi.submitPrompt")(function* () {
+      yield* publishCommand("prompt.submit")
+      return true
+    })
+
+    const clearPrompt = Effect.fn("TuiHttpApi.clearPrompt")(function* () {
+      yield* publishCommand("prompt.clear")
+      return true
+    })
+
+    const executeCommand = Effect.fn("TuiHttpApi.executeCommand")(function* (ctx: {
+      payload: typeof CommandPayload.Type
+    }) {
+      yield* publishCommand(commandAliases[ctx.payload.command as keyof typeof commandAliases] ?? ctx.payload.command)
+      return true
+    })
+
+    const showToast = Effect.fn("TuiHttpApi.showToast")(function* (ctx: {
+      payload: typeof TuiEvent.ToastShow.properties.Type
+    }) {
+      yield* bus.publish(TuiEvent.ToastShow, ctx.payload)
+      return true
+    })
+
+    const publish = Effect.fn("TuiHttpApi.publish")(function* (ctx: { payload: typeof TuiPublishPayload.Type }) {
+      if (ctx.payload.type === TuiEvent.PromptAppend.type)
+        yield* bus.publish(TuiEvent.PromptAppend, ctx.payload.properties)
+      if (ctx.payload.type === TuiEvent.CommandExecute.type)
+        yield* bus.publish(TuiEvent.CommandExecute, ctx.payload.properties)
+      if (ctx.payload.type === TuiEvent.ToastShow.type) yield* bus.publish(TuiEvent.ToastShow, ctx.payload.properties)
+      if (ctx.payload.type === TuiEvent.SessionSelect.type)
+        yield* bus.publish(TuiEvent.SessionSelect, ctx.payload.properties)
+      return true
+    })
+
+    const selectSession = Effect.fn("TuiHttpApi.selectSession")(function* (ctx: {
+      payload: typeof TuiEvent.SessionSelect.properties.Type
+    }) {
+      yield* session
+        .get(ctx.payload.sessionID)
+        .pipe(Effect.catchCause(() => Effect.fail(new HttpApiError.NotFound({}))))
+      yield* bus.publish(TuiEvent.SessionSelect, ctx.payload)
+      return true
+    })
+
+    const controlNext = Effect.fn("TuiHttpApi.controlNext")(function* () {
+      return yield* Effect.promise(() => nextTuiRequest())
+    })
+
+    const controlResponse = Effect.fn("TuiHttpApi.controlResponse")(function* (ctx: { payload: unknown }) {
+      submitTuiResponse(ctx.payload)
+      return true
+    })
+
+    return HttpApiBuilder.group(TuiApi, "tui", (handlers) =>
+      handlers
+        .handle("appendPrompt", appendPrompt)
+        .handle("openHelp", openHelp)
+        .handle("openSessions", openSessions)
+        .handle("openThemes", openThemes)
+        .handle("openModels", openModels)
+        .handle("submitPrompt", submitPrompt)
+        .handle("clearPrompt", clearPrompt)
+        .handle("executeCommand", executeCommand)
+        .handle("showToast", showToast)
+        .handle("publish", publish)
+        .handle("selectSession", selectSession)
+        .handle("controlNext", controlNext)
+        .handle("controlResponse", controlResponse),
+    )
+  }),
+)
diff --git a/packages/opencode/src/server/routes/instance/index.ts b/packages/opencode/src/server/routes/instance/index.ts
index 4c0503af5a..90151c9a81 100644
--- a/packages/opencode/src/server/routes/instance/index.ts
+++ b/packages/opencode/src/server/routes/instance/index.ts
@@ -16,12 +16,15 @@ import { QuestionRoutes } from "./question"
 import { PermissionRoutes } from "./permission"
 import { Flag } from "@opencode-ai/core/flag/flag"
 import { ExperimentalHttpApiServer } from "./httpapi/server"
+import { PtyPaths } from "./httpapi/pty"
+import { EventPaths } from "./httpapi/event"
 import { ExperimentalPaths } from "./httpapi/experimental"
 import { FilePaths } from "./httpapi/file"
 import { InstancePaths } from "./httpapi/instance"
 import { McpPaths } from "./httpapi/mcp"
 import { SessionPaths } from "./httpapi/session"
 import { SyncPaths } from "./httpapi/sync"
+import { TuiPaths } from "./httpapi/tui"
 import { ProjectRoutes } from "./project"
 import { SessionRoutes } from "./session"
 import { PtyRoutes } from "./pty"
@@ -41,6 +44,7 @@ export const InstanceRoutes = (upgrade: UpgradeWebSocket): Hono => {
   if (Flag.OPENCODE_EXPERIMENTAL_HTTPAPI) {
     const handler = ExperimentalHttpApiServer.webHandler().handler
     const context = Context.empty() as Context.Context<unknown>
+    app.get(EventPaths.event, (c) => handler(c.req.raw, context))
     app.get("/question", (c) => handler(c.req.raw, context))
     app.post("/question/:requestID/reply", (c) => handler(c.req.raw, context))
     app.post("/question/:requestID/reject", (c) => handler(c.req.raw, context))
@@ -94,6 +98,12 @@ export const InstanceRoutes = (upgrade: UpgradeWebSocket): Hono => {
     app.post(SyncPaths.start, (c) => handler(c.req.raw, context))
     app.post(SyncPaths.replay, (c) => handler(c.req.raw, context))
     app.post(SyncPaths.history, (c) => handler(c.req.raw, context))
+    app.get(PtyPaths.list, (c) => handler(c.req.raw, context))
+    app.post(PtyPaths.create, (c) => handler(c.req.raw, context))
+    app.get(PtyPaths.get, (c) => handler(c.req.raw, context))
+    app.put(PtyPaths.update, (c) => handler(c.req.raw, context))
+    app.delete(PtyPaths.remove, (c) => handler(c.req.raw, context))
+    app.get(PtyPaths.connect, (c) => handler(c.req.raw, context))
     app.get(SessionPaths.list, (c) => handler(c.req.raw, context))
     app.get(SessionPaths.status, (c) => handler(c.req.raw, context))
     app.get(SessionPaths.get, (c) => handler(c.req.raw, context))
@@ -121,6 +131,19 @@ export const InstanceRoutes = (upgrade: UpgradeWebSocket): Hono => {
     app.delete(SessionPaths.deleteMessage, (c) => handler(c.req.raw, context))
     app.delete(SessionPaths.deletePart, (c) => handler(c.req.raw, context))
     app.patch(SessionPaths.updatePart, (c) => handler(c.req.raw, context))
+    app.post(TuiPaths.appendPrompt, (c) => handler(c.req.raw, context))
+    app.post(TuiPaths.openHelp, (c) => handler(c.req.raw, context))
+    app.post(TuiPaths.openSessions, (c) => handler(c.req.raw, context))
+    app.post(TuiPaths.openThemes, (c) => handler(c.req.raw, context))
+    app.post(TuiPaths.openModels, (c) => handler(c.req.raw, context))
+    app.post(TuiPaths.submitPrompt, (c) => handler(c.req.raw, context))
+    app.post(TuiPaths.clearPrompt, (c) => handler(c.req.raw, context))
+    app.post(TuiPaths.executeCommand, (c) => handler(c.req.raw, context))
+    app.post(TuiPaths.showToast, (c) => handler(c.req.raw, context))
+    app.post(TuiPaths.publish, (c) => handler(c.req.raw, context))
+    app.post(TuiPaths.selectSession, (c) => handler(c.req.raw, context))
+    app.get(TuiPaths.controlNext, (c) => handler(c.req.raw, context))
+    app.post(TuiPaths.controlResponse, (c) => handler(c.req.raw, context))
   }
 
   return app
diff --git a/packages/opencode/src/server/routes/instance/pty.ts b/packages/opencode/src/server/routes/instance/pty.ts
index 5815372219..2ccdb1be1f 100644
--- a/packages/opencode/src/server/routes/instance/pty.ts
+++ b/packages/opencode/src/server/routes/instance/pty.ts
@@ -6,14 +6,41 @@ import z from "zod"
 import { AppRuntime } from "@/effect/app-runtime"
 import { Pty } from "@/pty"
 import { PtyID } from "@/pty/schema"
+import { Shell } from "@/shell/shell"
 import { NotFoundError } from "@/storage"
 import { errors } from "../../error"
 import { jsonRequest, runRequest } from "./trace"
 
+const ShellItem = z.object({
+  path: z.string(),
+  name: z.string(),
+  acceptable: z.boolean(),
+})
 const decodePtyID = Schema.decodeUnknownSync(PtyID)
 
 export function PtyRoutes(upgradeWebSocket: UpgradeWebSocket) {
   return new Hono()
+    .get(
+      "/shells",
+      describeRoute({
+        summary: "List available shells",
+        description: "Get a list of available shells on the system.",
+        operationId: "pty.shells",
+        responses: {
+          200: {
+            description: "List of shells",
+            content: {
+              "application/json": {
+                schema: resolver(z.array(ShellItem)),
+              },
+            },
+          },
+        },
+      }),
+      async (c) => {
+        return c.json(await Shell.list())
+      },
+    )
     .get(
       "/",
       describeRoute({
diff --git a/packages/opencode/src/server/routes/instance/tui.ts b/packages/opencode/src/server/routes/instance/tui.ts
index 932cf509eb..2fd931112a 100644
--- a/packages/opencode/src/server/routes/instance/tui.ts
+++ b/packages/opencode/src/server/routes/instance/tui.ts
@@ -12,15 +12,23 @@ import { errors } from "../../error"
 import { lazy } from "@/util/lazy"
 import { runRequest } from "./trace"
 
-const TuiRequest = z.object({
+export const TuiRequest = z.object({
   path: z.string(),
   body: z.any(),
 })
 
-type TuiRequest = z.infer<typeof TuiRequest>
+export type TuiRequest = z.infer<typeof TuiRequest>
 
 const request = new AsyncQueue<TuiRequest>()
-const response = new AsyncQueue<any>()
+const response = new AsyncQueue<unknown>()
+
+export function nextTuiRequest() {
+  return request.next()
+}
+
+export function submitTuiResponse(body: unknown) {
+  response.push(body)
+}
 
 export async function callTui(ctx: Context) {
   const body = await ctx.req.json()
@@ -50,7 +58,7 @@ const TuiControlRoutes = new Hono()
       },
     }),
     async (c) => {
-      const req = await request.next()
+      const req = await nextTuiRequest()
       return c.json(req)
     },
   )
@@ -74,7 +82,7 @@ const TuiControlRoutes = new Hono()
     validator("json", z.any()),
     async (c) => {
       const body = c.req.valid("json")
-      response.push(body)
+      submitTuiResponse(body)
       return c.json(true)
     },
   )
diff --git a/packages/opencode/src/session/prompt.ts b/packages/opencode/src/session/prompt.ts
index fe957bb9fc..ad588e66a0 100644
--- a/packages/opencode/src/session/prompt.ts
+++ b/packages/opencode/src/session/prompt.ts
@@ -31,7 +31,7 @@ import { CrossSpawnSpawner } from "@opencode-ai/core/cross-spawn-spawner"
 import * as Stream from "effect/Stream"
 import { Command } from "../command"
 import { pathToFileURL, fileURLToPath } from "url"
-import { ConfigMarkdown } from "../config"
+import { Config, ConfigMarkdown } from "../config"
 import { SessionSummary } from "./summary"
 import { NamedError } from "@opencode-ai/core/util/error"
 import { SessionProcessor } from "./processor"
@@ -93,6 +93,7 @@ export const layer = Layer.effect(
     const compaction = yield* SessionCompaction.Service
     const plugin = yield* Plugin.Service
     const commands = yield* Command.Service
+    const config = yield* Config.Service
     const permission = yield* Permission.Service
     const fsys = yield* AppFileSystem.Service
     const mcp = yield* MCP.Service
@@ -784,49 +785,10 @@ NOTE: At any point in time through this workflow you should feel free to ask the
       }
       yield* sessions.updatePart(part)
 
-      const sh = Shell.preferred()
-      const shellName = (
-        process.platform === "win32" ? path.win32.basename(sh, ".exe") : path.basename(sh)
-      ).toLowerCase()
+      const cfg = yield* config.get()
+      const sh = Shell.preferred(cfg.shell)
       const cwd = ctx.directory
-      const invocations: Record<string, { args: string[] }> = {
-        nu: { args: ["-c", input.command] },
-        fish: { args: ["-c", input.command] },
-        zsh: {
-          args: [
-            "-l",
-            "-c",
-            `
-              [[ -f ~/.zshenv ]] && source ~/.zshenv >/dev/null 2>&1 || true
-              [[ -f "\${ZDOTDIR:-$HOME}/.zshrc" ]] && source "\${ZDOTDIR:-$HOME}/.zshrc" >/dev/null 2>&1 || true
-              cd -- "$1"
-              eval ${JSON.stringify(input.command)}
-            `,
-            "opencode",
-            cwd,
-          ],
-        },
-        bash: {
-          args: [
-            "-l",
-            "-c",
-            `
-              shopt -s expand_aliases
-              [[ -f ~/.bashrc ]] && source ~/.bashrc >/dev/null 2>&1 || true
-              cd -- "$1"
-              eval ${JSON.stringify(input.command)}
-            `,
-            "opencode",
-            cwd,
-          ],
-        },
-        cmd: { args: ["/c", input.command] },
-        powershell: { args: ["-NoProfile", "-Command", input.command] },
-        pwsh: { args: ["-NoProfile", "-Command", input.command] },
-        "": { args: ["-c", input.command] },
-      }
-
-      const args = (invocations[shellName] ?? invocations[""]).args
+      const args = Shell.args(sh, input.command, cwd)
       const shellEnv = yield* plugin.trigger(
         "shell.env",
         { cwd, sessionID: input.sessionID, callID: part.callID },
@@ -843,7 +805,6 @@ NOTE: At any point in time through this workflow you should feel free to ask the
 
       let output = ""
       let aborted = false
-
       const finish = Effect.uninterruptible(
         Effect.gen(function* () {
           if (aborted) {
@@ -1589,7 +1550,8 @@ NOTE: At any point in time through this workflow you should feel free to ask the
 
       const shellMatches = ConfigMarkdown.shell(template)
       if (shellMatches.length > 0) {
-        const sh = Shell.preferred()
+        const cfg = yield* config.get()
+        const sh = Shell.preferred(cfg.shell)
         const results = yield* Effect.promise(() =>
           Promise.all(
             shellMatches.map(async ([, cmd]) => (await Process.text([cmd], { shell: sh, nothrow: true })).text),
@@ -1690,6 +1652,7 @@ export const defaultLayer = Layer.suspend(() =>
     Layer.provide(ToolRegistry.defaultLayer),
     Layer.provide(Truncate.defaultLayer),
     Layer.provide(Provider.defaultLayer),
+    Layer.provide(Config.defaultLayer),
     Layer.provide(Instruction.defaultLayer),
     Layer.provide(AppFileSystem.defaultLayer),
     Layer.provide(Plugin.defaultLayer),
diff --git a/packages/opencode/src/shell/shell.ts b/packages/opencode/src/shell/shell.ts
index 1c89961945..60af58059d 100644
--- a/packages/opencode/src/shell/shell.ts
+++ b/packages/opencode/src/shell/shell.ts
@@ -7,10 +7,23 @@ import { spawn, type ChildProcess } from "child_process"
 import { setTimeout as sleep } from "node:timers/promises"
 
 const SIGKILL_TIMEOUT_MS = 200
+const META: Record<string, { deny?: boolean; login?: boolean; posix?: boolean; ps?: boolean }> = {
+  bash: { login: true, posix: true },
+  dash: { login: true, posix: true },
+  fish: { deny: true, login: true },
+  ksh: { login: true, posix: true },
+  nu: { deny: true },
+  powershell: { ps: true },
+  pwsh: { ps: true },
+  sh: { login: true, posix: true },
+  zsh: { login: true, posix: true },
+}
 
-const BLACKLIST = new Set(["fish", "nu"])
-const LOGIN = new Set(["bash", "dash", "fish", "ksh", "sh", "zsh"])
-const POSIX = new Set(["bash", "dash", "ksh", "sh", "zsh"])
+export type Item = {
+  path: string
+  name: string
+  acceptable: boolean
+}
 
 export async function killTree(proc: ChildProcess, opts?: { exited?: () => boolean }): Promise<void> {
   const pid = proc.pid
@@ -50,22 +63,53 @@ function full(file: string) {
     if (shell.startsWith("/") && name(shell) === "bash") return gitbash() || shell
     return shell
   }
+  if (name(shell) === "bash") return gitbash() || which(shell) || shell
   return which(shell) || shell
 }
 
-function pick() {
-  const pwsh = which("pwsh.exe")
-  if (pwsh) return pwsh
-  const powershell = which("powershell.exe")
-  if (powershell) return powershell
+function meta(file: string) {
+  return META[name(file)]
+}
+
+function ok(file: string) {
+  return meta(file)?.deny !== true
+}
+
+function rooted(file: string) {
+  return path.isAbsolute(Filesystem.windowsPath(file))
+}
+
+function resolve(file: string) {
+  const shell = full(file)
+  if (rooted(shell)) {
+    if (Filesystem.stat(shell)?.isFile()) return shell
+    return
+  }
+  return which(shell) ?? undefined
+}
+
+function win() {
+  return Array.from(
+    new Set(
+      [which("pwsh"), which("powershell"), gitbash(), process.env.COMSPEC || "cmd.exe"]
+        .filter((item): item is string => Boolean(item))
+        .map(full),
+    ),
+  )
+}
+
+async function unix() {
+  const text = await Filesystem.readText("/etc/shells").catch(() => "")
+  if (text) return Array.from(new Set(text.split("\n").filter((line) => line.trim() && !line.startsWith("#"))))
+  return ["/bin/bash", "/bin/zsh", "/bin/sh"]
 }
 
 function select(file: string | undefined, opts?: { acceptable?: boolean }) {
-  if (file && (!opts?.acceptable || !BLACKLIST.has(name(file)))) return full(file)
-  if (process.platform === "win32") {
-    const shell = pick()
+  if (file && (!opts?.acceptable || ok(file))) {
+    const shell = resolve(file)
     if (shell) return shell
   }
+  if (process.platform === "win32") return win()[0]!
   return fallback()
 }
 
@@ -79,11 +123,6 @@ export function gitbash() {
 }
 
 function fallback() {
-  if (process.platform === "win32") {
-    const file = gitbash()
-    if (file) return file
-    return process.env.COMSPEC || "cmd.exe"
-  }
   if (process.platform === "darwin") return "/bin/zsh"
   const bash = which("bash")
   if (bash) return bash
@@ -96,15 +135,81 @@ export function name(file: string) {
 }
 
 export function login(file: string) {
-  return LOGIN.has(name(file))
+  return meta(file)?.login === true
 }
 
 export function posix(file: string) {
-  return POSIX.has(name(file))
+  return meta(file)?.posix === true
 }
 
-export const preferred = lazy(() => select(process.env.SHELL))
+export function ps(file: string) {
+  return meta(file)?.ps === true
+}
 
-export const acceptable = lazy(() => select(process.env.SHELL, { acceptable: true }))
+function info(file: string): Item {
+  const item = full(file)
+  const n = name(item)
+  return {
+    path: item,
+    name: resolve(n) ? n : item,
+    acceptable: ok(item),
+  }
+}
+
+export function args(file: string, command: string, cwd: string) {
+  const n = name(file)
+  if (n === "nu" || n === "fish") return ["-c", command]
+  if (n === "zsh") {
+    return [
+      "-l",
+      "-c",
+      `
+        [[ -f ~/.zshenv ]] && source ~/.zshenv >/dev/null 2>&1 || true
+        [[ -f "\${ZDOTDIR:-$HOME}/.zshrc" ]] && source "\${ZDOTDIR:-$HOME}/.zshrc" >/dev/null 2>&1 || true
+        cd -- "$1"
+        eval ${JSON.stringify(command)}
+      `,
+      "opencode",
+      cwd,
+    ]
+  }
+  if (n === "bash") {
+    return [
+      "-l",
+      "-c",
+      `
+        shopt -s expand_aliases
+        [[ -f ~/.bashrc ]] && source ~/.bashrc >/dev/null 2>&1 || true
+        cd -- "$1"
+        eval ${JSON.stringify(command)}
+      `,
+      "opencode",
+      cwd,
+    ]
+  }
+  if (n === "cmd") return ["/c", command]
+  if (ps(file)) return ["-NoProfile", "-Command", command]
+  return ["-c", command]
+}
+
+const defaultPreferred = lazy(() => select(process.env.SHELL))
+const defaultAcceptable = lazy(() => select(process.env.SHELL, { acceptable: true }))
+
+export function preferred(configShell?: string) {
+  if (configShell) return select(configShell)
+  return defaultPreferred()
+}
+preferred.reset = () => defaultPreferred.reset()
+
+export function acceptable(configShell?: string) {
+  if (configShell) return select(configShell, { acceptable: true })
+  return defaultAcceptable()
+}
+acceptable.reset = () => defaultAcceptable.reset()
+
+export async function list(): Promise<Item[]> {
+  const shells = process.platform === "win32" ? win() : await unix()
+  return shells.filter((s) => resolve(s)).map(info)
+}
 
 export * as Shell from "./shell"
diff --git a/packages/opencode/src/tool/shell.ts b/packages/opencode/src/tool/shell.ts
index b2c5669d20..effcdaaff4 100644
--- a/packages/opencode/src/tool/shell.ts
+++ b/packages/opencode/src/tool/shell.ts
@@ -10,6 +10,7 @@ import { Language, type Node } from "web-tree-sitter"
 
 import { AppFileSystem } from "@opencode-ai/core/filesystem"
 import { fileURLToPath } from "url"
+import { Config } from "@/config"
 import { Flag } from "@opencode-ai/core/flag/flag"
 import { Shell } from "@/shell/shell"
 import { ShellKind, ShellToolID } from "./shell/id"
@@ -25,7 +26,6 @@ export { Parameters } from "./shell/prompt"
 
 const MAX_METADATA_LENGTH = 30_000
 const DEFAULT_TIMEOUT = Flag.OPENCODE_EXPERIMENTAL_BASH_DEFAULT_TIMEOUT_MS || 2 * 60 * 1000
-const PS = new Set(["powershell", "pwsh"])
 const CWD = new Set(["cd", "push-location", "set-location"])
 const FILES = new Set([
   ...CWD,
@@ -267,8 +267,8 @@ const ask = Effect.fn("ShellTool.ask")(function* (ctx: Tool.Context, scan: Scan)
   })
 })
 
-function cmd(shell: string, name: string, command: string, cwd: string, env: NodeJS.ProcessEnv) {
-  if (process.platform === "win32" && PS.has(name)) {
+function cmd(shell: string, command: string, cwd: string, env: NodeJS.ProcessEnv) {
+  if (process.platform === "win32" && Shell.ps(shell)) {
     return ChildProcess.make(shell, ["-NoLogo", "-NoProfile", "-NonInteractive", "-Command", command], {
       cwd,
       env,
@@ -285,7 +285,6 @@ function cmd(shell: string, name: string, command: string, cwd: string, env: Nod
     detached: process.platform !== "win32",
   })
 }
-
 const parser = lazy(async () => {
   const { Parser } = await import("web-tree-sitter")
   const { default: treeWasm } = await import("web-tree-sitter/tree-sitter.wasm" as string, {
@@ -316,6 +315,7 @@ const parser = lazy(async () => {
 export const ShellTool = Tool.define(
   ShellToolID.id,
   Effect.gen(function* () {
+    const config = yield* Config.Service
     const spawner = yield* ChildProcessSpawner
     const fs = yield* AppFileSystem.Service
     const trunc = yield* Truncate.Service
@@ -397,7 +397,6 @@ export const ShellTool = Tool.define(
     const run = Effect.fn("ShellTool.run")(function* (
       input: {
         shell: string
-        name: string
         command: string
         cwd: string
         env: NodeJS.ProcessEnv
@@ -427,7 +426,7 @@ export const ShellTool = Tool.define(
 
       const code: number | null = yield* Effect.scoped(
         Effect.gen(function* () {
-          const handle = yield* spawner.spawn(cmd(input.shell, input.name, input.command, input.cwd, input.env))
+          const handle = yield* spawner.spawn(cmd(input.shell, input.command, input.cwd, input.env))
 
           yield* Effect.forkScoped(
             Stream.runForEach(Stream.decodeText(handle.all), (chunk) => {
@@ -556,7 +555,8 @@ export const ShellTool = Tool.define(
 
     return () =>
       Effect.gen(function* () {
-        const shell = Shell.acceptable()
+        const cfg = yield* config.get()
+        const shell = Shell.acceptable(cfg.shell)
         const name = Shell.name(shell)
         const limits = yield* trunc.limits()
         const prompt = ShellPrompt.render(name, process.platform, limits)
@@ -574,7 +574,7 @@ export const ShellTool = Tool.define(
                 throw new Error(`Invalid timeout value: ${params.timeout}. Timeout must be a positive number.`)
               }
               const timeout = params.timeout ?? DEFAULT_TIMEOUT
-              const ps = PS.has(name)
+              const ps = Shell.ps(shell)
               const root = yield* parse(params.command, ps)
               const scan = yield* collect(root, cwd, ps, shell)
               if (!Instance.containsPath(cwd)) scan.dirs.add(cwd)
@@ -583,7 +583,6 @@ export const ShellTool = Tool.define(
               return yield* run(
                 {
                   shell,
-                  name,
                   command: params.command,
                   cwd,
                   env: yield* shellEnv(ctx, cwd),
diff --git a/packages/opencode/test/config/config.test.ts b/packages/opencode/test/config/config.test.ts
index 2b67f0eba2..8fad72f992 100644
--- a/packages/opencode/test/config/config.test.ts
+++ b/packages/opencode/test/config/config.test.ts
@@ -55,6 +55,8 @@ const it = testEffect(layer)
 const load = () => Effect.runPromise(Config.Service.use((svc) => svc.get()).pipe(Effect.scoped, Effect.provide(layer)))
 const save = (config: Config.Info) =>
   Effect.runPromise(Config.Service.use((svc) => svc.update(config)).pipe(Effect.scoped, Effect.provide(layer)))
+const saveGlobal = (config: Config.Info) =>
+  Effect.runPromise(Config.Service.use((svc) => svc.updateGlobal(config)).pipe(Effect.scoped, Effect.provide(layer)))
 const clear = (wait = false) =>
   Effect.runPromise(Config.Service.use((svc) => svc.invalidate(wait)).pipe(Effect.scoped, Effect.provide(layer)))
 const listDirs = () =>
@@ -142,6 +144,106 @@ test("loads JSON config file", async () => {
   })
 })
 
+test("loads shell config field", async () => {
+  await using tmp = await tmpdir({
+    init: async (dir) => {
+      await writeConfig(dir, {
+        $schema: "https://opencode.ai/config.json",
+        shell: "bash",
+      })
+    },
+  })
+  await Instance.provide({
+    directory: tmp.path,
+    fn: async () => {
+      const config = await load()
+      expect(config.shell).toBe("bash")
+    },
+  })
+})
+
+test("updates config and preserves empty shell sentinel", async () => {
+  await using tmp = await tmpdir({
+    init: async (dir) => {
+      await writeConfig(
+        dir,
+        {
+          $schema: "https://opencode.ai/config.json",
+          shell: "bash",
+        },
+        "config.json",
+      )
+    },
+  })
+  await Instance.provide({
+    directory: tmp.path,
+    fn: async () => {
+      await save({ shell: "" })
+
+      const writtenConfig = await Filesystem.readJson<{ shell?: string }>(path.join(tmp.path, "config.json"))
+      expect(writtenConfig.shell).toBe("")
+    },
+  })
+})
+
+test("updates global config and omits empty shell key in json", async () => {
+  await using tmp = await tmpdir({
+    init: async (dir) => {
+      await writeConfig(dir, {
+        $schema: "https://opencode.ai/config.json",
+        shell: "bash",
+      })
+    },
+  })
+
+  const prev = Global.Path.config
+  ;(Global.Path as { config: string }).config = tmp.path
+  await clear(true)
+
+  try {
+    await saveGlobal({ shell: "" })
+
+    const writtenConfig = await Filesystem.readJson<{ shell?: string }>(path.join(tmp.path, "opencode.json"))
+    expect("shell" in writtenConfig).toBe(false)
+  } finally {
+    ;(Global.Path as { config: string }).config = prev
+    await clear(true)
+  }
+})
+
+test("updates global config and omits empty shell key in jsonc", async () => {
+  await using tmp = await tmpdir({
+    init: async (dir) => {
+      await Filesystem.write(
+        path.join(dir, "opencode.jsonc"),
+        JSON.stringify({
+          $schema: "https://opencode.ai/config.json",
+          shell: "bash",
+          model: "test/model",
+        }),
+      )
+    },
+  })
+
+  const prev = Global.Path.config
+  ;(Global.Path as { config: string }).config = tmp.path
+  await clear(true)
+
+  try {
+    await saveGlobal({ shell: "" })
+
+    const file = path.join(tmp.path, "opencode.jsonc")
+    const writtenConfig = await Filesystem.readText(file)
+    const parsed = ConfigParse.schema(Config.Info.zod, ConfigParse.jsonc(writtenConfig, file), file)
+    expect(writtenConfig).not.toContain('"shell"')
+    expect(parsed.shell).toBeUndefined()
+    expect(parsed.model).toBe("test/model")
+  } finally {
+    ;(Global.Path as { config: string }).config = prev
+    await clear(true)
+  }
+})
+
 test("loads formatter boolean config", async () => {
   await using tmp = await tmpdir({
     init: async (dir) => {
@@ -886,7 +988,6 @@ test("installs dependencies in writable OPENCODE_CONFIG_DIR", async () => {
   const noopNpm = Layer.mock(Npm.Service)({
     install: () => Effect.void,
     add: () => Effect.die("not implemented"),
-    outdated: () => Effect.succeed(false),
     which: () => Effect.succeed(Option.none()),
   })
   const testLayer = Config.layer.pipe(
diff --git a/packages/opencode/test/installation/installation.test.ts b/packages/opencode/test/installation/installation.test.ts
index 469ebb714d..5b26b05655 100644
--- a/packages/opencode/test/installation/installation.test.ts
+++ b/packages/opencode/test/installation/installation.test.ts
@@ -69,64 +69,46 @@ describe("installation", () => {
       expect(result).toBe("4.0.0-beta.1")
     })
 
-    test("reads npm versions via npm view", async () => {
-      const calls: string[][] = []
-      const layer = testLayer(
-        () => {
-          throw new Error("unexpected http request")
-        },
-        (cmd, args) => {
-          calls.push([cmd, ...args])
-          if (cmd === "npm" && args[0] === "view") return '"1.5.0"\n'
-          return ""
-        },
-      )
+    test("reads npm versions via registry", async () => {
+      const calls: string[] = []
+      const layer = testLayer((request) => {
+        calls.push(request.url)
+        return jsonResponse({ version: "1.5.0" })
+      })
 
       const result = await Effect.runPromise(
         Installation.Service.use((svc) => svc.latest("npm")).pipe(Effect.provide(layer)),
       )
       expect(result).toBe("1.5.0")
-      expect(calls).toContainEqual(["npm", "view", `opencode-ai@${InstallationChannel}`, "version", "--json"])
+      expect(calls).toContain(`https://registry.npmjs.org/opencode-ai/${InstallationChannel}`)
     })
 
-    test("reads npm versions via bun pm view", async () => {
-      const calls: string[][] = []
-      const layer = testLayer(
-        () => {
-          throw new Error("unexpected http request")
-        },
-        (cmd, args) => {
-          calls.push([cmd, ...args])
-          if (cmd === "bun" && args[0] === "pm") return '"1.6.0"\n'
-          return ""
-        },
-      )
+    test("reads bun versions via registry", async () => {
+      const calls: string[] = []
+      const layer = testLayer((request) => {
+        calls.push(request.url)
+        return jsonResponse({ version: "1.6.0" })
+      })
 
       const result = await Effect.runPromise(
         Installation.Service.use((svc) => svc.latest("bun")).pipe(Effect.provide(layer)),
       )
       expect(result).toBe("1.6.0")
-      expect(calls).toContainEqual(["bun", "pm", "view", `opencode-ai@${InstallationChannel}`, "version", "--json"])
+      expect(calls).toContain(`https://registry.npmjs.org/opencode-ai/${InstallationChannel}`)
     })
 
-    test("reads npm versions via pnpm view", async () => {
-      const calls: string[][] = []
-      const layer = testLayer(
-        () => {
-          throw new Error("unexpected http request")
-        },
-        (cmd, args) => {
-          calls.push([cmd, ...args])
-          if (cmd === "pnpm" && args[0] === "view") return '"1.7.0"\n'
-          return ""
-        },
-      )
+    test("reads pnpm versions via registry", async () => {
+      const calls: string[] = []
+      const layer = testLayer((request) => {
+        calls.push(request.url)
+        return jsonResponse({ version: "1.7.0" })
+      })
 
       const result = await Effect.runPromise(
         Installation.Service.use((svc) => svc.latest("pnpm")).pipe(Effect.provide(layer)),
       )
       expect(result).toBe("1.7.0")
-      expect(calls).toContainEqual(["pnpm", "view", `opencode-ai@${InstallationChannel}`, "version", "--json"])
+      expect(calls).toContain(`https://registry.npmjs.org/opencode-ai/${InstallationChannel}`)
     })
 
     test("reads scoop manifest versions", async () => {
diff --git a/packages/opencode/test/npm.test.ts b/packages/opencode/test/npm.test.ts
deleted file mode 100644
index d5b93a83c0..0000000000
--- a/packages/opencode/test/npm.test.ts
+++ /dev/null
@@ -1,143 +0,0 @@
-import fs from "fs/promises"
-import path from "path"
-import { describe, expect, test } from "bun:test"
-import { Effect, Layer, Stream } from "effect"
-import { NodeFileSystem } from "@effect/platform-node"
-import { AppFileSystem } from "@opencode-ai/core/filesystem"
-import { Global } from "@opencode-ai/core/global"
-import { EffectFlock } from "@opencode-ai/core/util/effect-flock"
-import { ChildProcess, ChildProcessSpawner } from "effect/unstable/process"
-import { Npm } from "@opencode-ai/core/npm"
-import { tmpdir } from "./fixture/fixture"
-
-const win = process.platform === "win32"
-const encoder = new TextEncoder()
-function mockSpawner(handler: (cmd: string, args: readonly string[]) => string = () => "") {
-  const spawner = ChildProcessSpawner.make((command) => {
-    const std = ChildProcess.isStandardCommand(command) ? command : undefined
-    const output = handler(std?.command ?? "", std?.args ?? [])
-    return Effect.succeed(
-      ChildProcessSpawner.makeHandle({
-        pid: ChildProcessSpawner.ProcessId(0),
-        exitCode: Effect.succeed(ChildProcessSpawner.ExitCode(0)),
-        isRunning: Effect.succeed(false),
-        kill: () => Effect.void,
-        stdin: { [Symbol.for("effect/Sink/TypeId")]: Symbol.for("effect/Sink/TypeId") } as any,
-        stdout: output ? Stream.make(encoder.encode(output)) : Stream.empty,
-        stderr: Stream.empty,
-        all: Stream.empty,
-        getInputFd: () => ({ [Symbol.for("effect/Sink/TypeId")]: Symbol.for("effect/Sink/TypeId") }) as any,
-        getOutputFd: () => Stream.empty,
-        unref: Effect.succeed(Effect.void),
-      }),
-    )
-  })
-  return Layer.succeed(ChildProcessSpawner.ChildProcessSpawner, spawner)
-}
-
-function testLayer(spawnHandler?: (cmd: string, args: readonly string[]) => string) {
-  return Npm.layer.pipe(
-    Layer.provide(mockSpawner(spawnHandler)),
-    Layer.provide(EffectFlock.layer),
-    Layer.provide(AppFileSystem.layer),
-    Layer.provide(Global.layer),
-    Layer.provide(NodeFileSystem.layer),
-  )
-}
-
-const writePackage = (dir: string, pkg: Record<string, unknown>) =>
-  Bun.write(
-    path.join(dir, "package.json"),
-    JSON.stringify({
-      version: "1.0.0",
-      ...pkg,
-    }),
-  )
-
-describe("Npm.sanitize", () => {
-  test("keeps normal scoped package specs unchanged", () => {
-    expect(Npm.sanitize("@opencode/acme")).toBe("@opencode/acme")
-    expect(Npm.sanitize("@opencode/acme@1.0.0")).toBe("@opencode/acme@1.0.0")
-    expect(Npm.sanitize("prettier")).toBe("prettier")
-  })
-
-  test("handles git https specs", () => {
-    const spec = "acme@git+https://github.com/opencode/acme.git"
-    const expected = win ? "acme@git+https_//github.com/opencode/acme.git" : spec
-    expect(Npm.sanitize(spec)).toBe(expected)
-  })
-})
-
-describe("Npm.install", () => {
-  test("respects omit from project .npmrc", async () => {
-    await using tmp = await tmpdir()
-
-    await writePackage(tmp.path, {
-      name: "fixture",
-      dependencies: {
-        "prod-pkg": "file:./prod-pkg",
-      },
-      devDependencies: {
-        "dev-pkg": "file:./dev-pkg",
-      },
-    })
-    await Bun.write(path.join(tmp.path, ".npmrc"), "omit=dev\n")
-    await fs.mkdir(path.join(tmp.path, "prod-pkg"))
-    await fs.mkdir(path.join(tmp.path, "dev-pkg"))
-    await writePackage(path.join(tmp.path, "prod-pkg"), { name: "prod-pkg" })
-    await writePackage(path.join(tmp.path, "dev-pkg"), { name: "dev-pkg" })
-
-    await Npm.install(tmp.path)
-
-    await expect(fs.stat(path.join(tmp.path, "node_modules", "prod-pkg"))).resolves.toBeDefined()
-    await expect(fs.stat(path.join(tmp.path, "node_modules", "dev-pkg"))).rejects.toThrow()
-  })
-})
-
-describe("Npm.outdated", () => {
-  test("checks latest via npm view", async () => {
-    const calls: string[][] = []
-    const layer = testLayer((cmd, args) => {
-      calls.push([cmd, ...args])
-      if (cmd === "npm" && args[0] === "view") return '"2.0.0"\n'
-      return ""
-    })
-
-    const result = await Effect.runPromise(
-      Npm.Service.use((svc) => svc.outdated("example", "1.0.0")).pipe(Effect.provide(layer)),
-    )
-
-    expect(result).toBe(true)
-    expect(calls).toContainEqual(["npm", "view", "example", "dist-tags.latest", "--json"])
-  })
-
-  test("keeps range comparison behavior", async () => {
-    const layer = testLayer((cmd, args) => {
-      if (cmd === "npm" && args[0] === "view") return '"2.3.0"\n'
-      return ""
-    })
-
-    const result = await Effect.runPromise(
-      Npm.Service.use((svc) => svc.outdated("example", "^2.0.0")).pipe(Effect.provide(layer)),
-    )
-
-    expect(result).toBe(false)
-  })
-
-  test("falls back when npm view is unavailable", async () => {
-    const calls: string[][] = []
-    const layer = testLayer((cmd, args) => {
-      calls.push([cmd, ...args])
-      if (cmd === "pnpm" && args[0] === "view") return '"2.0.0"\n'
-      return ""
-    })
-
-    const result = await Effect.runPromise(
-      Npm.Service.use((svc) => svc.outdated("example", "1.0.0")).pipe(Effect.provide(layer)),
-    )
-
-    expect(result).toBe(true)
-    expect(calls).toContainEqual(["npm", "view", "example", "dist-tags.latest", "--json"])
-    expect(calls).toContainEqual(["pnpm", "view", "example", "dist-tags.latest", "--json"])
-  })
-})
diff --git a/packages/opencode/test/pty/pty-shell.test.ts b/packages/opencode/test/pty/pty-shell.test.ts
index d5182061d0..7b8b4d67ca 100644
--- a/packages/opencode/test/pty/pty-shell.test.ts
+++ b/packages/opencode/test/pty/pty-shell.test.ts
@@ -67,3 +67,38 @@ describe("pty shell args", () => {
     )
   }
 })
+
+describe("pty configured shell", () => {
+  test(
+    "uses configured shell for default PTY command",
+    async () => {
+      const configured = process.platform === "win32" ? Bun.which("pwsh") || Bun.which("powershell") : Bun.which("bash")
+      if (!configured) return
+
+      await using dir = await tmpdir({
+        config: { shell: Shell.name(configured) },
+      })
+      await Instance.provide({
+        directory: dir.path,
+        fn: () =>
+          AppRuntime.runPromise(
+            Effect.gen(function* () {
+              const pty = yield* Pty.Service
+              const info = yield* pty.create({ title: "configured" })
+              try {
+                if (process.platform === "win32") {
+                  expect(info.command.toLowerCase()).toBe(configured.toLowerCase())
+                } else {
+                  expect(info.command).toBe(configured)
+                }
+                expect(info.args).toEqual(process.platform === "win32" ? [] : ["-l"])
+              } finally {
+                yield* pty.remove(info.id)
+              }
+            }),
+          ),
+      })
+    },
+    { timeout: 30000 },
+  )
+})
diff --git a/packages/opencode/test/server/httpapi-event.test.ts b/packages/opencode/test/server/httpapi-event.test.ts
new file mode 100644
index 0000000000..53bb1edb27
--- /dev/null
+++ b/packages/opencode/test/server/httpapi-event.test.ts
@@ -0,0 +1,50 @@
+import { afterEach, describe, expect, test } from "bun:test"
+import type { UpgradeWebSocket } from "hono/ws"
+import { Flag } from "@opencode-ai/core/flag/flag"
+import { Instance } from "../../src/project/instance"
+import { InstanceRoutes } from "../../src/server/routes/instance"
+import { EventPaths } from "../../src/server/routes/instance/httpapi/event"
+import { Log } from "../../src/util"
+import { resetDatabase } from "../fixture/db"
+import { tmpdir } from "../fixture/fixture"
+
+void Log.init({ print: false })
+
+const original = Flag.OPENCODE_EXPERIMENTAL_HTTPAPI
+const websocket = (() => () => new Response(null, { status: 501 })) as unknown as UpgradeWebSocket
+
+function app() {
+  Flag.OPENCODE_EXPERIMENTAL_HTTPAPI = true
+  return InstanceRoutes(websocket)
+}
+
+async function readFirstChunk(response: Response) {
+  if (!response.body) throw new Error("missing response body")
+  const reader = response.body.getReader()
+  const result = await Promise.race([
+    reader.read(),
+    new Promise<never>((_, reject) => setTimeout(() => reject(new Error("timed out waiting for event")), 5_000)),
+  ])
+  await reader.cancel()
+  return new TextDecoder().decode(result.value)
+}
+
+afterEach(async () => {
+  Flag.OPENCODE_EXPERIMENTAL_HTTPAPI = original
+  await Instance.disposeAll()
+  await resetDatabase()
+})
+
+describe("event HttpApi bridge", () => {
+  test("serves event stream through experimental Effect route", async () => {
+    await using tmp = await tmpdir({ git: true, config: { formatter: false, lsp: false } })
+    const response = await app().request(EventPaths.event, { headers: { "x-opencode-directory": tmp.path } })
+
+    expect(response.status).toBe(200)
+    expect(response.headers.get("content-type")).toContain("text/event-stream")
+    expect(response.headers.get("cache-control")).toBe("no-cache, no-transform")
+    expect(response.headers.get("x-accel-buffering")).toBe("no")
+    expect(response.headers.get("x-content-type-options")).toBe("nosniff")
+    expect(await readFirstChunk(response)).toContain('data: {"type":"server.connected","properties":{}}\n\n')
+  })
+})
diff --git a/packages/opencode/test/server/httpapi-pty.test.ts b/packages/opencode/test/server/httpapi-pty.test.ts
new file mode 100644
index 0000000000..00aa8e21f6
--- /dev/null
+++ b/packages/opencode/test/server/httpapi-pty.test.ts
@@ -0,0 +1,74 @@
+import { afterEach, describe, expect, test } from "bun:test"
+import type { UpgradeWebSocket } from "hono/ws"
+import { Flag } from "@opencode-ai/core/flag/flag"
+import { PtyID } from "../../src/pty/schema"
+import { Instance } from "../../src/project/instance"
+import { InstanceRoutes } from "../../src/server/routes/instance"
+import { PtyPaths } from "../../src/server/routes/instance/httpapi/pty"
+import { Log } from "../../src/util"
+import { resetDatabase } from "../fixture/db"
+import { tmpdir } from "../fixture/fixture"
+
+void Log.init({ print: false })
+
+const original = Flag.OPENCODE_EXPERIMENTAL_HTTPAPI
+const websocket = (() => () => new Response(null, { status: 501 })) as unknown as UpgradeWebSocket
+const testPty = process.platform === "win32" ? test.skip : test
+
+function app() {
+  Flag.OPENCODE_EXPERIMENTAL_HTTPAPI = true
+  return InstanceRoutes(websocket)
+}
+
+afterEach(async () => {
+  Flag.OPENCODE_EXPERIMENTAL_HTTPAPI = original
+  await Instance.disposeAll()
+  await resetDatabase()
+})
+
+describe("pty HttpApi bridge", () => {
+  testPty("serves PTY JSON routes through experimental Effect routes", async () => {
+    await using tmp = await tmpdir({ git: true, config: { formatter: false, lsp: false } })
+    const headers = { "x-opencode-directory": tmp.path }
+    const list = await app().request(PtyPaths.list, { headers })
+    expect(list.status).toBe(200)
+    expect(await list.json()).toEqual([])
+
+    const created = await app().request(PtyPaths.create, {
+      method: "POST",
+      headers: { ...headers, "content-type": "application/json" },
+      body: JSON.stringify({ command: "/usr/bin/env", args: ["sh", "-c", "sleep 5"], title: "demo" }),
+    })
+    expect(created.status).toBe(200)
+    const info = await created.json()
+
+    try {
+      expect(info).toMatchObject({ title: "demo", command: "/usr/bin/env", status: "running" })
+
+      const found = await app().request(PtyPaths.get.replace(":ptyID", info.id), { headers })
+      expect(found.status).toBe(200)
+      expect(await found.json()).toMatchObject({ id: info.id, title: "demo" })
+
+      const updated = await app().request(PtyPaths.update.replace(":ptyID", info.id), {
+        method: "PUT",
+        headers: { ...headers, "content-type": "application/json" },
+        body: JSON.stringify({ title: "renamed", size: { cols: 80, rows: 24 } }),
+      })
+      expect(updated.status).toBe(200)
+      expect(await updated.json()).toMatchObject({ id: info.id, title: "renamed" })
+    } finally {
+      await app().request(PtyPaths.remove.replace(":ptyID", info.id), { method: "DELETE", headers })
+    }
+
+    const missing = await app().request(PtyPaths.get.replace(":ptyID", info.id), { headers })
+    expect(missing.status).toBe(404)
+  })
+
+  test("returns 404 for missing PTY websocket before upgrade", async () => {
+    await using tmp = await tmpdir({ git: true, config: { formatter: false, lsp: false } })
+    const response = await app().request(PtyPaths.connect.replace(":ptyID", PtyID.ascending()), {
+      headers: { "x-opencode-directory": tmp.path },
+    })
+    expect(response.status).toBe(404)
+  })
+})
diff --git a/packages/opencode/test/server/httpapi-tui.test.ts b/packages/opencode/test/server/httpapi-tui.test.ts
new file mode 100644
index 0000000000..f5dac5ab4c
--- /dev/null
+++ b/packages/opencode/test/server/httpapi-tui.test.ts
@@ -0,0 +1,79 @@
+import { afterEach, describe, expect, test } from "bun:test"
+import type { Context } from "hono"
+import type { UpgradeWebSocket } from "hono/ws"
+import { Flag } from "@opencode-ai/core/flag/flag"
+import { SessionID } from "../../src/session/schema"
+import { Instance } from "../../src/project/instance"
+import { InstanceRoutes } from "../../src/server/routes/instance"
+import { TuiPaths } from "../../src/server/routes/instance/httpapi/tui"
+import { callTui } from "../../src/server/routes/instance/tui"
+import { Log } from "../../src/util"
+import { resetDatabase } from "../fixture/db"
+import { tmpdir } from "../fixture/fixture"
+
+void Log.init({ print: false })
+
+const original = Flag.OPENCODE_EXPERIMENTAL_HTTPAPI
+const websocket = (() => () => new Response(null, { status: 501 })) as unknown as UpgradeWebSocket
+
+function app() {
+  Flag.OPENCODE_EXPERIMENTAL_HTTPAPI = true
+  return InstanceRoutes(websocket)
+}
+
+async function expectTrue(path: string, headers: Record<string, string>, body?: unknown) {
+  const response = await app().request(path, {
+    method: "POST",
+    headers: { ...headers, "content-type": "application/json" },
+    body: JSON.stringify(body ?? {}),
+  })
+  expect(response.status).toBe(200)
+  expect(await response.json()).toBe(true)
+}
+
+afterEach(async () => {
+  Flag.OPENCODE_EXPERIMENTAL_HTTPAPI = original
+  await Instance.disposeAll()
+  await resetDatabase()
+})
+
+describe("tui HttpApi bridge", () => {
+  test("serves TUI command and event routes through experimental Effect routes", async () => {
+    await using tmp = await tmpdir({ git: true, config: { formatter: false, lsp: false } })
+    const headers = { "x-opencode-directory": tmp.path }
+
+    await expectTrue(TuiPaths.appendPrompt, headers, { text: "hello" })
+    await expectTrue(TuiPaths.openHelp, headers)
+    await expectTrue(TuiPaths.openSessions, headers)
+    await expectTrue(TuiPaths.openThemes, headers)
+    await expectTrue(TuiPaths.openModels, headers)
+    await expectTrue(TuiPaths.submitPrompt, headers)
+    await expectTrue(TuiPaths.clearPrompt, headers)
+    await expectTrue(TuiPaths.executeCommand, headers, { command: "agent_cycle" })
+    await expectTrue(TuiPaths.showToast, headers, { message: "Saved", variant: "success" })
+    await expectTrue(TuiPaths.publish, headers, {
+      type: "tui.prompt.append",
+      properties: { text: "from publish" },
+    })
+
+    const missing = await app().request(TuiPaths.selectSession, {
+      method: "POST",
+      headers: { ...headers, "content-type": "application/json" },
+      body: JSON.stringify({ sessionID: SessionID.descending() }),
+    })
+    expect(missing.status).toBe(404)
+  })
+
+  test("serves TUI control queue through experimental Effect routes", async () => {
+    await using tmp = await tmpdir({ git: true, config: { formatter: false, lsp: false } })
+    const pending = callTui({ req: { json: async () => ({ value: 1 }), path: "/demo" } } as unknown as Context)
+    const headers = { "x-opencode-directory": tmp.path }
+
+    const next = await app().request(TuiPaths.controlNext, { headers })
+    expect(next.status).toBe(200)
+    expect(await next.json()).toEqual({ path: "/demo", body: { value: 1 } })
+
+    await expectTrue(TuiPaths.controlResponse, headers, { ok: true })
+    expect(await pending).toEqual({ ok: true })
+  })
+})
diff --git a/packages/opencode/test/session/prompt.test.ts b/packages/opencode/test/session/prompt.test.ts
index 7e33777463..b592d06df3 100644
--- a/packages/opencode/test/session/prompt.test.ts
+++ b/packages/opencode/test/session/prompt.test.ts
@@ -316,9 +316,11 @@ const addSubtask = (sessionID: SessionID, messageID: MessageID, model = ref) =>
   })
 
 const boot = Effect.fn("test.boot")(function* (input?: { title?: string }) {
+  const config = yield* Config.Service
   const prompt = yield* SessionPrompt.Service
   const run = yield* SessionRunState.Service
   const sessions = yield* Session.Service
+  yield* config.get()
   const chat = yield* sessions.create(input ?? { title: "Pinned" })
   return { prompt, run, sessions, chat }
 })
@@ -1078,6 +1080,32 @@ unix("shell completes a fast command on the preferred shell", () =>
   ),
 )
 
+unix(
+  "shell uses configured shell over env shell",
+  () =>
+    withSh(() =>
+      provideTmpdirInstance(
+        (_dir) =>
+          Effect.gen(function* () {
+            if (!Bun.which("bash")) return
+
+            const { prompt, chat } = yield* boot()
+            const result = yield* prompt.shell({
+              sessionID: chat.id,
+              agent: "build",
+              command: "[[ 1 -eq 1 ]] && printf configured",
+            })
+
+            const tool = completedTool(result.parts)
+            if (!tool) return
+            expect(tool.state.output).toContain("configured")
+          }),
+        { git: true, config: { ...cfg, shell: "bash" } },
+      ),
+    ),
+  30_000,
+)
+
 unix("shell commands can change directory after startup", () =>
   provideTmpdirInstance(
     (dir) =>
@@ -1263,6 +1291,45 @@ it.live(
   3_000,
 )
 
+unix(
+  "command ! expansion uses configured shell over env shell",
+  () =>
+    withSh(() =>
+      provideTmpdirServer(
+        ({ llm }) =>
+          Effect.gen(function* () {
+            if (!Bun.which("bash")) return
+
+            const { prompt, chat } = yield* boot()
+            yield* llm.text("done")
+
+            const result = yield* prompt.command({
+              sessionID: chat.id,
+              command: "probe",
+              arguments: "",
+            })
+
+            expect(result.info.role).toBe("assistant")
+            const inputs = yield* llm.inputs
+            expect(JSON.stringify(inputs.at(-1)?.messages)).toContain("configured")
+          }),
+        {
+          git: true,
+          config: (url) => ({
+            ...providerCfg(url),
+            shell: "bash",
+            command: {
+              probe: {
+                template: "Probe: !`[[ 1 -eq 1 ]] && printf configured`",
+              },
+            },
+          }),
+        },
+      ),
+    ),
+  30_000,
+)
+
 unix(
   "cancel interrupts shell and resolves cleanly",
   () =>
diff --git a/packages/opencode/test/shell/shell.test.ts b/packages/opencode/test/shell/shell.test.ts
index 6d7a77d72d..ed29a4cc8b 100644
--- a/packages/opencode/test/shell/shell.test.ts
+++ b/packages/opencode/test/shell/shell.test.ts
@@ -2,6 +2,7 @@ import { describe, expect, test } from "bun:test"
 import path from "path"
 import { Shell } from "../../src/shell/shell"
 import { Filesystem } from "../../src/util"
+import { which } from "../../src/util/which"
 
 const withShell = async (shell: string | undefined, fn: () => void | Promise<void>) => {
   const prev = process.env.SHELL
@@ -39,6 +40,20 @@ describe("shell", () => {
     expect(Shell.posix("C:/tools/pwsh.exe")).toBe(false)
   })
 
+  test("falls back when configured shell cannot be resolved", async () => {
+    await withShell(undefined, async () => {
+      const preferred = Shell.preferred()
+      const acceptable = Shell.acceptable()
+      expect(Shell.preferred("opencode-missing-shell")).toBe(preferred)
+      expect(Shell.acceptable("opencode-missing-shell")).toBe(acceptable)
+    })
+  })
+
+  test("falls back for terminal-only acceptable shells", () => {
+    expect(Shell.name(Shell.acceptable("fish"))).not.toBe("fish")
+    expect(Shell.name(Shell.acceptable("nu"))).not.toBe("nu")
+  })
+
   if (process.platform === "win32") {
     test("rejects blacklisted shells case-insensitively", async () => {
       await withShell("NU.EXE", async () => {
@@ -62,8 +77,19 @@ describe("shell", () => {
       })
     })
 
+    test("resolves bare bash to Git Bash before PATH", async () => {
+      const bash = Shell.gitbash()
+      if (!bash) return
+      expect(Shell.acceptable("bash")).toBe(bash)
+      expect(Shell.preferred("bash")).toBe(bash)
+      await withShell("bash", async () => {
+        expect(Shell.acceptable()).toBe(bash)
+        expect(Shell.preferred()).toBe(bash)
+      })
+    })
+
     test("resolves bare PowerShell shells", async () => {
-      const shell = Bun.which("pwsh") || Bun.which("powershell")
+      const shell = which("pwsh") || which("powershell")
       if (!shell) return
       await withShell(path.win32.basename(shell), async () => {
         expect(Shell.preferred()).toBe(shell)
diff --git a/packages/opencode/test/tool/shell.test.ts b/packages/opencode/test/tool/shell.test.ts
index 27ec942c49..ecdcc0890b 100644
--- a/packages/opencode/test/tool/shell.test.ts
+++ b/packages/opencode/test/tool/shell.test.ts
@@ -2,6 +2,7 @@ import { describe, expect, test } from "bun:test"
 import { Effect, Layer, ManagedRuntime } from "effect"
 import os from "os"
 import path from "path"
+import { Config } from "../../src/config"
 import { Shell } from "../../src/shell/shell"
 import { ShellToolID } from "../../src/tool/shell/id"
 import { ShellTool } from "../../src/tool/shell"
@@ -22,6 +23,7 @@ const runtime = ManagedRuntime.make(
     AppFileSystem.defaultLayer,
     Plugin.defaultLayer,
     Truncate.defaultLayer,
+    Config.defaultLayer,
     Agent.defaultLayer,
   ),
 )
@@ -158,6 +160,33 @@ describe("tool.shell", () => {
       },
     })
   })
+
+  test("falls back from terminal-only configured shell", async () => {
+    await using tmp = await tmpdir({
+      config: { shell: "fish" },
+    })
+    await Instance.provide({
+      directory: tmp.path,
+      fn: async () => {
+        const bash = await initBash()
+        const fallback = Shell.name(Shell.acceptable("fish"))
+        expect(fallback).not.toBe("fish")
+        expect(bash.description).toContain(fallback)
+
+        const result = await Effect.runPromise(
+          bash.execute(
+            {
+              command: "echo fallback",
+              description: "Echo fallback text",
+            },
+            ctx,
+          ),
+        )
+        expect(result.metadata.exit).toBe(0)
+        expect(result.output).toContain("fallback")
+      },
+    })
+  })
 })
 
 describe("tool.shell permissions", () => {
diff --git a/packages/plugin/package.json b/packages/plugin/package.json
index edd615a25f..f0e94db072 100644
--- a/packages/plugin/package.json
+++ b/packages/plugin/package.json
@@ -1,7 +1,7 @@
 {
   "$schema": "https://json.schemastore.org/package.json",
   "name": "@opencode-ai/plugin",
-  "version": "1.14.26",
+  "version": "1.14.27",
   "type": "module",
   "license": "MIT",
   "scripts": {
@@ -22,8 +22,8 @@
     "zod": "catalog:"
   },
   "peerDependencies": {
-    "@opentui/core": ">=0.1.104",
-    "@opentui/solid": ">=0.1.104"
+    "@opentui/core": ">=0.1.105",
+    "@opentui/solid": ">=0.1.105"
   },
   "peerDependenciesMeta": {
     "@opentui/core": {
diff --git a/packages/sdk/js/package.json b/packages/sdk/js/package.json
index 12045fba28..28bbedbd3e 100644
--- a/packages/sdk/js/package.json
+++ b/packages/sdk/js/package.json
@@ -1,7 +1,7 @@
 {
   "$schema": "https://json.schemastore.org/package.json",
   "name": "@opencode-ai/sdk",
-  "version": "1.14.26",
+  "version": "1.14.27",
   "type": "module",
   "license": "MIT",
   "scripts": {
diff --git a/packages/sdk/js/src/v2/gen/sdk.gen.ts b/packages/sdk/js/src/v2/gen/sdk.gen.ts
index 6248eb8e4d..e21d1f4968 100644
--- a/packages/sdk/js/src/v2/gen/sdk.gen.ts
+++ b/packages/sdk/js/src/v2/gen/sdk.gen.ts
@@ -105,6 +105,7 @@ import type {
   PtyListResponses,
   PtyRemoveErrors,
   PtyRemoveResponses,
+  PtyShellsResponses,
   PtyUpdateErrors,
   PtyUpdateResponses,
   QuestionAnswer,
@@ -1080,6 +1081,36 @@ export class Project extends HeyApiClient {
 }
 
 export class Pty extends HeyApiClient {
+  /**
+   * List available shells
+   *
+   * Get a list of available shells on the system.
+   */
+  public shells<ThrowOnError extends boolean = false>(
+    parameters?: {
+      directory?: string
+      workspace?: string
+    },
+    options?: Options<never, ThrowOnError>,
+  ) {
+    const params = buildClientParams(
+      [parameters],
+      [
+        {
+          args: [
+            { in: "query", key: "directory" },
+            { in: "query", key: "workspace" },
+          ],
+        },
+      ],
+    )
+    return (options?.client ?? this.client).get<PtyShellsResponses, unknown, ThrowOnError>({
+      url: "/pty/shells",
+      ...options,
+      ...params,
+    })
+  }
+
   /**
    * List PTY sessions
    *
diff --git a/packages/sdk/js/src/v2/gen/types.gen.ts b/packages/sdk/js/src/v2/gen/types.gen.ts
index 7943ea8072..918039b006 100644
--- a/packages/sdk/js/src/v2/gen/types.gen.ts
+++ b/packages/sdk/js/src/v2/gen/types.gen.ts
@@ -1470,6 +1470,10 @@ export type Config = {
    * JSON schema reference for configuration validation
    */
   $schema?: string
+  /**
+   * Default shell to use for terminal and bash tool
+   */
+  shell?: string
   logLevel?: LogLevel
   server?: ServerConfig
   /**
@@ -2694,6 +2698,29 @@ export type ProjectUpdateResponses = {
 
 export type ProjectUpdateResponse = ProjectUpdateResponses[keyof ProjectUpdateResponses]
 
+export type PtyShellsData = {
+  body?: never
+  path?: never
+  query?: {
+    directory?: string
+    workspace?: string
+  }
+  url: "/pty/shells"
+}
+
+export type PtyShellsResponses = {
+  /**
+   * List of shells
+   */
+  200: Array<{
+    path: string
+    name: string
+    acceptable: boolean
+  }>
+}
+
+export type PtyShellsResponse = PtyShellsResponses[keyof PtyShellsResponses]
+
 export type PtyListData = {
   body?: never
   path?: never
diff --git a/packages/sdk/openapi.json b/packages/sdk/openapi.json
index f23688e34f..4177557e76 100644
--- a/packages/sdk/openapi.json
+++ b/packages/sdk/openapi.json
@@ -1032,6 +1032,62 @@
         ]
       }
     },
+    "/pty/shells": {
+      "get": {
+        "operationId": "pty.shells",
+        "parameters": [
+          {
+            "in": "query",
+            "name": "directory",
+            "schema": {
+              "type": "string"
+            }
+          },
+          {
+            "in": "query",
+            "name": "workspace",
+            "schema": {
+              "type": "string"
+            }
+          }
+        ],
+        "summary": "List available shells",
+        "description": "Get a list of available shells on the system.",
+        "responses": {
+          "200": {
+            "description": "List of shells",
+            "content": {
+              "application/json": {
+                "schema": {
+                  "type": "array",
+                  "items": {
+                    "type": "object",
+                    "properties": {
+                      "path": {
+                        "type": "string"
+                      },
+                      "name": {
+                        "type": "string"
+                      },
+                      "acceptable": {
+                        "type": "boolean"
+                      }
+                    },
+                    "required": ["path", "name", "acceptable"]
+                  }
+                }
+              }
+            }
+          }
+        },
+        "x-codeSamples": [
+          {
+            "lang": "js",
+            "source": "import { createOpencodeClient } from \"@opencode-ai/sdk\n\nconst client = createOpencodeClient()\nawait client.pty.shells({\n  ...\n})"
+          }
+        ]
+      }
+    },
     "/pty": {
       "get": {
         "operationId": "pty.list",
@@ -11454,6 +11510,10 @@
             "description": "JSON schema reference for configuration validation",
             "type": "string"
           },
+          "shell": {
+            "description": "Default shell to use for terminal and bash tool",
+            "type": "string"
+          },
           "logLevel": {
             "$ref": "#/components/schemas/LogLevel"
           },
diff --git a/packages/slack/package.json b/packages/slack/package.json
index 0e2db047d5..9d9820986e 100644
--- a/packages/slack/package.json
+++ b/packages/slack/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@opencode-ai/slack",
-  "version": "1.14.26",
+  "version": "1.14.27",
   "type": "module",
   "license": "MIT",
   "scripts": {
diff --git a/packages/ui/package.json b/packages/ui/package.json
index e5e8bad61b..3e64674a55 100644
--- a/packages/ui/package.json
+++ b/packages/ui/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@opencode-ai/ui",
-  "version": "1.14.26",
+  "version": "1.14.27",
   "type": "module",
   "license": "MIT",
   "exports": {
diff --git a/packages/web/package.json b/packages/web/package.json
index 8c26f31d42..4741966474 100644
--- a/packages/web/package.json
+++ b/packages/web/package.json
@@ -2,7 +2,7 @@
   "name": "@opencode-ai/web",
   "type": "module",
   "license": "MIT",
-  "version": "1.14.26",
+  "version": "1.14.27",
   "scripts": {
     "dev": "astro dev",
     "dev:remote": "VITE_API_URL=https://api.opencode.ai astro dev",
diff --git a/packages/web/src/content/docs/config.mdx b/packages/web/src/content/docs/config.mdx
index 52ee1da0a3..14eefdd81c 100644
--- a/packages/web/src/content/docs/config.mdx
+++ b/packages/web/src/content/docs/config.mdx
@@ -312,6 +312,21 @@ Available options:
 
 ---
 
+### Shell
+
+You can configure the shell used for the interactive terminal using the `shell` option. Compatible shells are also used for agent tool calls.
+
+```json title="opencode.json"
+{
+  "$schema": "https://opencode.ai/config.json",
+  "shell": "pwsh"
+}
+```
+
+If not specified, OpenCode will automatically discover and use a sensible default based on your operating system (e.g. `pwsh` or `cmd.exe` on Windows, `/bin/zsh` or `/bin/bash` on macOS/Linux). You can provide an absolute path or a short name.
+
+---
+
 ### Tools
 
 You can manage the tools an LLM can use through the `tools` option.
diff --git a/script/raw-changelog.ts b/script/raw-changelog.ts
index 4a0bb30aca..735b078be1 100644
--- a/script/raw-changelog.ts
+++ b/script/raw-changelog.ts
@@ -23,7 +23,7 @@ type Diff = {
 }
 
 const repo = process.env.GH_REPO ?? "anomalyco/opencode"
-const bot = ["actions-user", "opencode", "opencode-agent[bot]"]
+const bot = ["actions-user", "github-actions[bot]", "opencode", "opencode-agent[bot]"]
 const team = [
   ...(await Bun.file(new URL("../.github/TEAM_MEMBERS", import.meta.url))
     .text()
diff --git a/sdks/vscode/package.json b/sdks/vscode/package.json
index df4a484cbb..357120ec91 100644
--- a/sdks/vscode/package.json
+++ b/sdks/vscode/package.json
@@ -2,7 +2,7 @@
   "name": "opencode",
   "displayName": "opencode",
   "description": "opencode for VS Code",
-  "version": "1.14.26",
+  "version": "1.14.27",
   "publisher": "sst-dev",
   "repository": {
     "type": "git",