Expand local_machine docs and automation for connectivity, games, and ops.

Add proxy/VPN/telegram launchd and emergency runbooks; reorganize apps docs;
document JA3 CrossOver runbook and Wine troubleshooting; add GOG/HoMM game
scripts, disk cleanup guides, and gitea push-via-proxy helper. Ignore temp/.

Co-authored-by: Cursor <cursoragent@cursor.com>

.gitignore

@@ -33,6 +33,8 @@
 # VPN/WireGuard configs with private keys (only under connectivity/vpn)
 docs/connectivity/vpn/*.conf
 **/vpn/*.conf
+# Key pair for Windows proxy tunnel (created by create-windows-proxy-key.sh)
+docs/connectivity/scripts/windows-proxy-key/
 
 # --- Python ---
 __pycache__/
@@ -67,6 +69,7 @@ yarn-error.log*
 *.backup
 *.cache
 .cache/
+temp/
 
 # --- OS junk ---
 Thumbs.db