refactor: reduce CRAP scores in router/workflow/notification

- llm_router.go: Extract getStringFromMap, firstNonEmpty, paramResolver
  - buildCronSpec: 12 → 4 complexity
  - buildParameters: 9 → 5 complexity

- routing_workflow.go: Extract stateMachine, stateResult types
  - RoutingWorkflow: 11 → 6 complexity
  - Separate executeTask/executePass/executeFail

- notification.go: Extract checker interface pattern
  - DeploymentPreCheckActivity: 10 → 5 complexity
  - goCheckers() returns language-specific checkers

- Added 7 new test cases for helper functions
- Coverage: internal/routing 63.6% → 66.0%

k8s/git-commit.yaml

@@ -9,6 +9,6 @@ metadata:
     app.kubernetes.io/name: poimen
     app.kubernetes.io/component: orchestrator
 data:
-  GIT_COMMIT: "303e78f7"  # Updated automatically by CI/CD
+  GIT_COMMIT: "e82600c1"  # Updated automatically by CI/CD
   GIT_BRANCH: "main"
-  DEPLOYMENT_DATE: "2026-09-02"
+  DEPLOYMENT_DATE: "2026-09-03"

k8s/worker-deployment.yaml

@@ -13,8 +13,8 @@ spec:
       labels:
         app: poimen-worker
       annotations:
-        git-commit: "303e78f7"  # ✅ Updated on each push, triggers rolling restart
-        deployment-date: "2026-09-02"
+        git-commit: "e82600c1"  # ✅ Updated on each push, triggers rolling restart
+        deployment-date: "2026-09-03"
     spec:
       containers:
       - name: worker