cleanup: remove clawd/openclaw references, fix permissions, add architecture docs

- Replace all ~/clawd and ~/.clawdbot paths with ~/echo-core equivalents
  in tools (git_commit, ralph_prd_generator, backup_config, lead-gen)
- Update personality files: TOOLS.md repo/paths, AGENTS.md security audit cmd
- Migrate HANDOFF.md architectural decisions to docs/architecture.md
- Tighten credentials/ dir to 700, add to .gitignore
- Add .claude/ and *.pid to .gitignore
- Various adapter, router, and session improvements from prior work

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

tools/backup_config.sh

@@ -2,19 +2,19 @@
 # Backup config cu retenție: 1 zilnic, 1 săptămânal, 1 lunar
 
 BACKUP_DIR="/home/moltbot/backups"
-CONFIG="$HOME/.clawdbot/clawdbot.json"
+CONFIG="$HOME/echo-core/config.json"
 
 # Backup zilnic (suprascrie)
-cp "$CONFIG" "$BACKUP_DIR/clawdbot-daily.json"
+cp "$CONFIG" "$BACKUP_DIR/echo-core-daily.json"
 
 # Backup săptămânal (duminică)
 if [ "$(date +%u)" -eq 7 ]; then
-    cp "$CONFIG" "$BACKUP_DIR/clawdbot-weekly.json"
+    cp "$CONFIG" "$BACKUP_DIR/echo-core-weekly.json"
 fi
 
 # Backup lunar (ziua 1)
 if [ "$(date +%d)" -eq 01 ]; then
-    cp "$CONFIG" "$BACKUP_DIR/clawdbot-monthly.json"
+    cp "$CONFIG" "$BACKUP_DIR/echo-core-monthly.json"
 fi
 
 echo "Backup done: $(date)"