chore(ci): pin reusable workflow refs to @v1

Replace floating @main with @v1 on anolishq/.github reusable workflows.
v1 is a mutable major tag: force-moved for non-breaking updates, new
major for breaking changes. Ref: Phase 5 CI governance hardening.

Author: CameronBrooks11

.github/workflows/docs.yml

@@ -17,4 +17,4 @@ on:
 
 jobs:
   check:
-    uses: anolishq/.github/.github/workflows/docs-check.yml@main
+    uses: anolishq/.github/.github/workflows/docs-check.yml@v1

.github/workflows/metrics.yml

@@ -0,0 +1,12 @@
+name: Metrics
+
+on:
+  push:
+    branches: [main]
+  schedule:
+    - cron: '0 6 * * 1'  # Weekly Monday 6am UTC
+  workflow_dispatch:
+
+jobs:
+  collect:
+    uses: anolishq/.github/.github/workflows/metrics.yml@v1