fix(anthropic-effort): skip effort injection for Haiku models (#3308)

Haiku models do not support the effort parameter and return API errors
when it is passed. The hook now explicitly checks for Haiku model
patterns and skips effort injection, preventing silent title generation
failures.

Added EFFORT_UNSUPPORTED_PATTERN and isEffortUnsupportedModel() to
detect and skip Haiku models.

Fixes #3308

src/hooks/anthropic-effort/index.test.ts

@@ -147,6 +147,30 @@ describe("createAnthropicEffortHook", () => {
 
       expect(output.options.effort).toBeUndefined()
     })
+
+    describe("#given haiku models (effort unsupported)", () => {
+      const haikuModels = [
+        "claude-haiku-4-5",
+        "claude-haiku-4.6",
+        "claude-haiku",
+        "claude-haiku-20240307",
+      ]
+
+      for (const modelID of haikuModels) {
+        it(`skips effort injection for ${modelID}`, async () => {
+          // given
+          const hook = createAnthropicEffortHook()
+          const { input, output } = createMockParams({ modelID })
+
+          // when
+          await hook["chat.params"](input, output)
+
+          // then
+          expect(output.options.effort).toBeUndefined()
+          expect(input.message.variant).toBe("max")
+        })
+      }
+    })
   })
 
   describe("existing options", () => {