chore(ci): document and harden workflow pipeline (#241)

* docs(ci): add CI workflow map and cross-links

* chore(ci): harden workflow determinism and safety

* chore(ci): address workflow review feedback

* style(ci): normalize workflow and ci-map formatting

.github/workflows/workflow-sanity.yml

@@ -23,6 +23,7 @@ permissions:
 jobs:
   no-tabs:
     runs-on: ubuntu-latest
+    timeout-minutes: 10
     steps:
       - name: Checkout
         uses: actions/checkout@v4
@@ -55,6 +56,7 @@ jobs:
 
   actionlint:
     runs-on: ubuntu-latest
+    timeout-minutes: 10
     steps:
       - name: Checkout
         uses: actions/checkout@v4