feat: service route branch handling, workspace hover card redesign, and agent form state improvements

- Add service-route-branch-handler for routing requests to branch-specific services
- Add service-hostname utility for generating hostnames from branch names
- Redesign workspace hover card with CI check status display
- Update combined model selector and sidebar workspace list
- Improve agent form state and input draft hooks
- Update checkout-git with enhanced branch handling
- Add workspace git watch and bootstrap improvements

packages/app/src/hooks/use-agent-input-draft.test.ts

@@ -112,13 +112,13 @@ describe("useAgentInputDraft", () => {
       ).toBe("gpt-5.4-mini");
     });
 
-    it("falls back to the provider default model", () => {
+    it("returns empty string when no model selected", () => {
       expect(
         __private__.resolveEffectiveComposerModelId({
           selectedModel: "",
           availableModels: models,
         }),
-      ).toBe("gpt-5.4");
+      ).toBe("");
     });
   });