debug: add verbose logging to workflows to diagnose yarn install failure

Added debug output to see:
- Git URL rewrites configuration
- Environment variables
- Verbose yarn install output

This will help identify why yarn install is failing after the GITHUB_TOKEN fix.

https://claude.ai/code/session_015R3U3kiprQiNTTNNt31Sg6

.github/workflows/lint.yml

@@ -44,11 +44,18 @@ jobs:
           restore-keys: |
             ${{ runner.os }}-yarn-
 
+      - name: Debug Git Config
+        run: |
+          echo "=== Git URL Rewrites ==="
+          git config --global --get-regexp url
+          echo "=== Environment ==="
+          env | grep -i git || true
+
       - name: Install packages
         env:
           GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
           GIT_TERMINAL_PROMPT: 0
-        run: yarn install --immutable
+        run: yarn install --immutable --verbose
 
       - name: Check linting
         run: yarn lint