docs(tools): add Gitea repo credentials reference

TOOLS.md

@@ -158,6 +158,15 @@ Skills are shared. Your setup is yours. Keeping them apart means you can update
   - keep 3 newer noncurrent versions
   - expire delete markers enabled
 
+### Gitea (LAN git repo)
+
+- Repo: `will/swarm-zap.git`
+- Base URL: `https://gitea-http.taildb3494.ts.net`
+- Repo URL: `https://gitea-http.taildb3494.ts.net/will/swarm-zap.git`
+- Username: `will`
+- Credentials file: `~/.openclaw/credentials/gitea-swarm-zap.env` (mode `600`)
+- Usage: backup/review for workspace work and skill development
+
 ### Kubernetes (homelab)
 
 - Cluster access: available