feat(FN-3189): add explicit slow-lane CI gating and inline priority picker

Merges FN-3183/FN-3186 (priority picker in quick-entry box) and FN-3189 (CLI slow-lane test gating and CI lane) into the codebase. The quick-entry box gains inline priority selection, while the test suite introduces explicit slow/pre-release lane classification and a corresponding CI gate in the wor

Fusion-Task-Id: FN-3189

.github/workflows/ci.yml

@@ -35,6 +35,9 @@ jobs:
       - name: Install Bun
         uses: oven-sh/setup-bun@v2
 
+      - name: Run CLI slow lane (opt-in suites)
+        run: pnpm test:slow-cli
+
       - name: Build standalone binary
         run: pnpm --filter @runfusion/fusion build:exe