fix(core): select Kimi prompt by provider

packages/core/src/plugin/system-prompt.ts

@@ -21,7 +21,9 @@ export const OpenAIPlugin = make("openai", (id) => {
 
 export const GooglePlugin = make("google", (id) => (id.includes("gemini-") ? PROMPT_GEMINI : undefined))
 export const AnthropicPlugin = make("anthropic", (id) => (id.includes("claude") ? PROMPT_ANTHROPIC : undefined))
-export const KimiPlugin = make("kimi", (id) => (id.includes("kimi") ? PROMPT_KIMI : undefined))
+export const KimiPlugin = make("kimi", (id, providerID) =>
+  id.includes("kimi") || providerID.includes("kimi") ? PROMPT_KIMI : undefined,
+)
 export const ArceePlugin = make("arcee", (id) => (id.includes("trinity") ? PROMPT_TRINITY : undefined))
 export const MetaPlugin = make("meta", (id) => {
   if (!id.includes("muse")) return
@@ -31,7 +33,7 @@ export const MetaPlugin = make("meta", (id) => {
 
 export const Plugins = [OpenAIPlugin, GooglePlugin, AnthropicPlugin, KimiPlugin, ArceePlugin, MetaPlugin] as const
 
-function make(id: string, select: (modelID: string) => string | undefined) {
+function make(id: string, select: (modelID: string, providerID: string) => string | undefined) {
   return define({
     id: `opencode.system-prompt.${id}`,
     effect: Effect.fn(`SystemPromptPlugin.${id}`)(function* (ctx) {
@@ -43,7 +45,10 @@ function make(id: string, select: (modelID: string) => string | undefined) {
           const model = (yield* ctx.catalog.model.list()).data.find(
             (model) => model.providerID === event.model.providerID && model.id === event.model.id,
           )
-          const prompt = select(`${model?.modelID ?? event.model.id} ${model?.family ?? ""}`.toLowerCase())
+          const prompt = select(
+            `${model?.modelID ?? event.model.id} ${model?.family ?? ""}`.toLowerCase(),
+            event.model.providerID.toLowerCase(),
+          )
           if (!prompt) return
           event.system[0] = { ...system, text: prompt }
         }).pipe(Effect.catch(() => Effect.void)),

packages/core/test/plugin/system-prompt.test.ts

@@ -25,10 +25,10 @@ const makeHost = Effect.gen(function* () {
   return yield* PluginHost.make(plugins)
 })
 
-const context = (id: string, system = fallback): SessionHooks["context"] => ({
+const context = (id: string, system = fallback, providerID = "test"): SessionHooks["context"] => ({
   sessionID: Session.ID.make("ses_system_prompt"),
   agent: Agent.ID.make("build"),
-  model: Model.Ref.make({ providerID: Provider.ID.make("test"), id: Model.ID.make(id) }),
+  model: Model.Ref.make({ providerID: Provider.ID.make(providerID), id: Model.ID.make(id) }),
   system: [SystemPart.make(system)],
   messages: [],
   tools: {},
@@ -120,6 +120,19 @@ describe("SystemPromptPlugin", () => {
     }),
   )
 
+  it.effect("selects the Kimi prompt through the official provider", () =>
+    Effect.gen(function* () {
+      const hooks = yield* PluginHooks.Service
+      const pluginHost = yield* makeHost
+      yield* SystemPromptPlugin.KimiPlugin.effect(pluginHost)
+      const event = context("k3", fallback, "kimi-for-coding")
+
+      yield* hooks.trigger("session", "context", event)
+
+      expect(event.system[0]?.text).toContain("# Prompt and Tool Use")
+    }),
+  )
+
   it.effect("preserves an explicit agent system prompt", () =>
     Effect.gen(function* () {
       const agents = yield* Agent.Service