feat(llm): add novita api as a default provider (#829)

* feat(llm): add Novita AI as a built-in provider

Novita's endpoint (https://api.novita.ai/v3/openai) is OpenAI-compatible,
so it registers like the other OpenAI-protocol providers (deepseek, kimi,
z-ai, ...). Adds the registry entry, the matching name in the
provider-order test, and the provider table in the en/zh/ja
configuration docs. Model ids are taken from the live
/v3/openai/models endpoint.

* fix(llm): correct Novita base URL to current documented endpoint

The registry entry, tests-adjacent docs tables (en/ja/zh configuration.md)
used https://api.novita.ai/v3/openai. That path still resolves today, but
Novita's current documentation (novita.ai/docs/guides/llm-api) no longer
shows it; the current documented OpenAI-compatible endpoint is
https://api.novita.ai/openai. Verified live 2026-08-01: both paths return
identical /models and /chat/completions results, so this is a stale-citation
fix, not a functional break.

* Recommend Novita's current flagship models

The models listed for Novita were older ids that no longer reflect what
the platform leads with. Point the recommendations at the three current
flagships instead, each verified against api.novita.ai:

  moonshotai/kimi-k3              1M context, native vision
  zai-org/glm-5.2                 1M context, long-horizon agentic work
  deepseek/deepseek-v4-flash-0731 1M context, cheapest of the three

Context windows, output limits, input modalities and pricing were taken
from the live /openai/v1/models response rather than carried over.

* Apply suggestion from @wu21-web

Co-authored-by: Tao Xin <wu2196674@icloud.com>

* Sync provider registry with upstream to resolve merge conflict

Rebase-equivalent update of internal/llm/providers.go,
internal/llm/providers_test.go, and the en/ja/zh/ru configuration docs
to match upstream/main's current content (minimax-cn, mistral, model
list refreshes) while keeping the novita entry this branch adds. This
is a targeted content sync of the six files that conflicted, not a
full merge, so unrelated upstream changes (workflows, CI, etc.) are
left untouched. Also adds the novita row to the ru docs table, which
was missing.

---------

Co-authored-by: kite <254839944+lizhengfeng101@users.noreply.github.com>

internal/llm/providers.go

@@ -317,6 +317,18 @@ var registry = []Provider{
 			"qwen3.5:397b",
 		},
 	},
+	{
+		Name:        "novita",
+		DisplayName: "Novita API",
+		Protocol:    ProtocolOpenAIChatCompletions,
+		BaseURL:     "https://api.novita.ai/openai",
+		EnvVar:      "NOVITA_API_KEY",
+		Models: []string{
+			"moonshotai/kimi-k3",
+			"zai-org/glm-5.2",
+			"deepseek/deepseek-v4-flash-0731",
+		},
+	},
 	{
 		Name:        "litellm",
 		DisplayName: "LiteLLM AI Gateway",

internal/llm/providers_test.go

@@ -75,7 +75,7 @@ func TestListProviders_Order(t *testing.T) {
 	if len(providers) < 3 {
 		t.Fatalf("expected at least 3 providers, got %d", len(providers))
 	}
-	expected := []string{"anthropic", "baidu-qianfan", "dashscope", "dashscope-tokenplan", "deepseek", "edenai", "hy-tokenplan", "iflytek", "kimi", "litellm", "mimo", "minimax", "minimax-cn", "mistral", "ollama-cloud", "openai", "tencent-tokenhub", "volcengine", "z-ai", "z-ai-coding"}
+	expected := []string{"anthropic", "baidu-qianfan", "dashscope", "dashscope-tokenplan", "deepseek", "edenai", "hy-tokenplan", "iflytek", "kimi", "litellm", "mimo", "minimax", "minimax-cn", "mistral", "novita", "ollama-cloud", "openai", "tencent-tokenhub", "volcengine", "z-ai", "z-ai-coding"}
 	if len(providers) != len(expected) {
 		t.Fatalf("expected %d providers, got %d", len(expected), len(providers))
 	}

pages/src/content/docs/en/configuration.md

@@ -59,6 +59,7 @@ environment variable.
 | `minimax` | openai | `https://api.minimax.io/v1` | `MINIMAX_GLOBAL_API_KEY` |
 | `minimax-cn` | openai | `https://api.minimaxi.com/v1` | `MINIMAX_API_KEY` |
 | `baidu-qianfan` | openai | `https://qianfan.baidubce.com/v2` | `QIANFAN_API_KEY` |
+| `novita` | openai | `https://api.novita.ai/openai` | `NOVITA_API_KEY` |
 
 ### Custom providers
 

pages/src/content/docs/ja/configuration.md

@@ -57,6 +57,7 @@ ocr config set providers.anthropic.api_key sk-ant-xxxxxxxxxx
 | `minimax` | openai | `https://api.minimax.io/v1` | `MINIMAX_GLOBAL_API_KEY` |
 | `minimax-cn` | openai | `https://api.minimaxi.com/v1` | `MINIMAX_API_KEY` |
 | `baidu-qianfan` | openai | `https://qianfan.baidubce.com/v2` | `QIANFAN_API_KEY` |
+| `novita` | openai | `https://api.novita.ai/openai` | `NOVITA_API_KEY` |
 
 ### カスタム provider
 

pages/src/content/docs/ru/configuration.md

@@ -62,6 +62,7 @@ API-ключ. Если `providers.<name>.api_key` не задан, OCR испо
 | `minimax` | openai | `https://api.minimax.io/v1` | `MINIMAX_GLOBAL_API_KEY` |
 | `minimax-cn` | openai | `https://api.minimaxi.com/v1` | `MINIMAX_API_KEY` |
 | `baidu-qianfan` | openai | `https://qianfan.baidubce.com/v2` | `QIANFAN_API_KEY` |
+| `novita` | openai | `https://api.novita.ai/openai` | `NOVITA_API_KEY` |
 
 ### Пользовательские провайдеры
 

pages/src/content/docs/zh/configuration.md

@@ -56,6 +56,7 @@ ocr config set providers.anthropic.api_key sk-ant-xxxxxxxxxx
 | `minimax` | openai | `https://api.minimax.io/v1` | `MINIMAX_GLOBAL_API_KEY` |
 | `minimax-cn` | openai | `https://api.minimaxi.com/v1` | `MINIMAX_API_KEY` |
 | `baidu-qianfan` | openai | `https://qianfan.baidubce.com/v2` | `QIANFAN_API_KEY` |
+| `novita` | openai | `https://api.novita.ai/openai` | `NOVITA_API_KEY` |
 
 ### 自定义 provider