fix: update plugin-integration tests for getCIChecks field name changes

The getCIChecks fix changed field names from `conclusion`/`detailsUrl`
to `state`/`link`. Updated test mocks to match:

- Changed `conclusion: "SUCCESS"` → `state: "SUCCESS"`
- Changed `conclusion: "FAILURE"` → `state: "FAILURE"`
- Changed `detailsUrl` → `link`

Tests now pass with correct field names.

Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>

packages/core/src/__tests__/plugin-integration.test.ts

@@ -436,9 +436,9 @@ describe("plugin integration", () => {
       // gh calls for determineStatus:
       // 1. getPRState → open
       mockGh({ state: "OPEN" });
-      // 2. getCISummary → failing (pr checks returns array of checks)
+      // 2. getCISummary → failing (pr checks returns array of checks with correct field names)
       mockGh([
-        { name: "lint", state: "COMPLETED", conclusion: "FAILURE", detailsUrl: "", startedAt: "", completedAt: "" },
+        { name: "lint", state: "FAILURE", link: "", startedAt: "", completedAt: "" },
       ]);
 
       await lm.check("app-1");
@@ -492,9 +492,9 @@ describe("plugin integration", () => {
 
       // 1. getPRState → open
       mockGh({ state: "OPEN" });
-      // 2. getCISummary → passing
+      // 2. getCISummary → passing (using correct field names: state and link)
       mockGh([
-        { name: "lint", state: "COMPLETED", conclusion: "SUCCESS", detailsUrl: "", startedAt: "", completedAt: "" },
+        { name: "lint", state: "SUCCESS", link: "", startedAt: "", completedAt: "" },
       ]);
       // 3. getReviewDecision (gh pr view with reviewDecision)
       mockGh({ reviewDecision: "CHANGES_REQUESTED" });