fix(ci): skip context sync drift check in CI environment

Context-sync walks up the directory tree to find the root AGENT.md.
On koala's act_runner, checkout is under /var/lib/act_runner/, not
under ~/dev/, so ROOT_CONTEXT resolves to empty. Generated files
differ from committed files (which include root context), causing
the drift check to fail.

Skip context sync when CI=true; local checks still verify sync.

Taskfile.yml

@@ -22,18 +22,22 @@ tasks:
   check:
     desc: Run all checks (context freshness + lint + test + vet)
     cmds:
-      - task: context:sync
       - cmd: |
-          drift=$(git status --porcelain -- AGENTS.md CLAUDE.md .cursorrules .aider.conventions.md .context/system-prompt.txt 2>/dev/null)
-          if [ -n "$drift" ]; then
-            echo "ERROR: derived adapters drifted from canonical context." >&2
-            echo "$drift" >&2
-            echo "" >&2
-            echo "Run: git add AGENTS.md CLAUDE.md .cursorrules .aider.conventions.md .context/system-prompt.txt" >&2
-            echo "     git commit -m 'chore: re-sync context adapters'" >&2
-            exit 1
+          if [ -n "${CI:-}" ]; then
+            echo "✓ context sync: skipped in CI"
+          else
+            bash scripts/context-sync.sh
+            drift=$(git status --porcelain -- AGENTS.md CLAUDE.md .cursorrules .aider.conventions.md .context/system-prompt.txt 2>/dev/null)
+            if [ -n "$drift" ]; then
+              echo "ERROR: derived adapters drifted from canonical context." >&2
+              echo "$drift" >&2
+              echo "" >&2
+              echo "Run: git add AGENTS.md CLAUDE.md .cursorrules .aider.conventions.md .context/system-prompt.txt" >&2
+              echo "     git commit -m 'chore: re-sync context adapters'" >&2
+              exit 1
+            fi
+            echo "✓ context: canonical and adapters are in sync"
           fi
-          echo "✓ context: canonical and adapters are in sync"
       - task: lint
       - task: test
       - task: vet