Fix git sync: commit memory files before pull, push back to remote

- .gitignore: exclude runtime junk (.claude/, .cache/, .npm/) but track
  life/ and memory/ so agent knowledge persists across pod restarts
- CEO heartbeat: git add + commit local changes before pull --rebase,
  then push to persist memory files in the repo
- Fixes agents wasting turns debugging dirty working tree on every heartbeat

Co-Authored-By: Paperclip <noreply@paperclip.ing>

ceo/HEARTBEAT.md

@@ -74,7 +74,11 @@ This repo (`/paperclip/privilegedescalation/agents`) is the canonical source of
 #### 5a. Authenticate with GitHub and pull latest
 
     export GH_TOKEN=$(bash /paperclip/privilegedescalation/agents/get-github-token.sh)
-    git -C /paperclip/privilegedescalation/agents pull origin main
+    cd /paperclip/privilegedescalation/agents
+    git add -A
+    git diff --cached --quiet || git commit -m "agent: memory and runtime updates $(date -u +%Y-%m-%dT%H:%M:%SZ)"
+    git pull --rebase origin main
+    git push origin main
 
 #### 5b. Detect changes since last sync