fix(capabilities): support bare Kimi K3 upstream id

open-sse/providers/capabilities.js

@@ -222,6 +222,9 @@ export const PATTERN_CAPABILITIES = [
   { pattern: "*qwen*",          caps: { reasoning: true, thinkingFormat: "qwen", contextWindow: 262144 } },
 
   // ── Kimi (enabled→reasoning_effort; K2.7-code cannot disable) ─────
+  // K3 routes through bare upstream id `k3`; keep this before generic Kimi.
+  { pattern: "*kimi*k3*",       caps: { vision: true, videoInput: true, reasoning: true, thinkingFormat: "kimi", contextWindow: 1048576, maxOutput: 131072 } },
+  { pattern: "k3",              caps: { vision: true, videoInput: true, reasoning: true, thinkingFormat: "kimi", contextWindow: 1048576, maxOutput: 131072 } },
   { pattern: "*kimi*k2.7*code*", caps: { vision: true, reasoning: true, thinkingFormat: "kimi", thinkingCanDisable: false, contextWindow: 262144, maxOutput: 262144 } },
   { pattern: "*kimi*k2*",       caps: { vision: true, reasoning: true, thinkingFormat: "kimi", contextWindow: 262144, maxOutput: 262144 } },
   { pattern: "*kimi*",          caps: { reasoning: true, thinkingFormat: "kimi", contextWindow: 262144 } },

tests/translator/thinking-unified.test.js

@@ -126,6 +126,10 @@ describe("applyThinking per provider format", () => {
     const out = apply("openai", "kimi-k2.6", { reasoning_effort: "high" }, "kimi");
     expect(out.reasoning_effort).toBe("high");
   });
+  it("Kimi K3 keeps reasoning_effort after its alias resolves to bare k3", () => {
+    const out = apply("openai", "k3", { reasoning_effort: "high" }, "kimi");
+    expect(out.reasoning_effort).toBe("high");
+  });
   it("Kimi auto → supported reasoning_effort", () => {
     const out = apply("openai", "kimi-k2.7", { reasoning_effort: "auto" }, "kimchi");
     expect(out.reasoning_effort).toBe("high");

tests/unit/capabilities.test.js

@@ -43,4 +43,19 @@ describe("getCapabilitiesForModel", () => {
     expect(getCapabilitiesForModel("kiro", "gpt-5.6-luna-agentic")).toMatchObject(kiroGpt56Expected);
     expect(getCapabilitiesForModel("kiro", "gpt-5.6-sol-thinking-agentic")).toMatchObject(kiroGpt56Expected);
   });
+
+  it("keeps Kimi K3 capabilities after its alias resolves to bare k3", () => {
+    const expected = {
+      vision: true,
+      videoInput: true,
+      reasoning: true,
+      thinkingFormat: "kimi",
+      contextWindow: 1048576,
+      maxOutput: 131072,
+    };
+
+    expect(getCapabilitiesForModel("kimi", "kimi-k3")).toMatchObject(expected);
+    expect(getCapabilitiesForModel("kimi", "k3")).toMatchObject(expected);
+    expect(getCapabilitiesForModel("kimi", "k3.5").reasoning).toBe(false);
+  });
 });