feat(cli): add effect cli scaffold

packages/cli/package.json

@@ -0,0 +1,24 @@
+{
+  "$schema": "https://json.schemastore.org/package.json",
+  "name": "@opencode-ai/cli",
+  "version": "1.15.12",
+  "private": true,
+  "type": "module",
+  "license": "MIT",
+  "bin": {
+    "opencode": "./src/index.ts"
+  },
+  "scripts": {
+    "dev": "bun run src/index.ts",
+    "typecheck": "tsgo --noEmit"
+  },
+  "dependencies": {
+    "@effect/platform-node": "catalog:",
+    "effect": "catalog:"
+  },
+  "devDependencies": {
+    "@tsconfig/bun": "catalog:",
+    "@types/bun": "catalog:",
+    "@typescript/native-preview": "catalog:"
+  }
+}

packages/cli/src/index.ts

@@ -0,0 +1,15 @@
+#!/usr/bin/env bun
+
+import * as NodeRuntime from "@effect/platform-node/NodeRuntime"
+import * as NodeServices from "@effect/platform-node/NodeServices"
+import * as Effect from "effect/Effect"
+import * as Command from "effect/unstable/cli/Command"
+
+const cli = Command.make("opencode", {}, () => Effect.void).pipe(
+  Command.withDescription("OpenCode command line interface"),
+)
+
+Command.run(cli, { version: "local" }).pipe(
+  Effect.provide(NodeServices.layer),
+  NodeRuntime.runMain,
+)

packages/cli/tsconfig.json

@@ -0,0 +1,7 @@
+{
+  "$schema": "https://json.schemastore.org/tsconfig",
+  "extends": "@tsconfig/bun/tsconfig.json",
+  "compilerOptions": {
+    "noUncheckedIndexedAccess": false
+  }
+}