feat: v0.8.2 clickable paths, alert sessions, ops guard and trail

- Terminal link provider: printed paths that are files of the session open
  in Files (at the line); the file list is preloaded so the first hover works.
- Alerts: "In a new session" opens alert-<name> and types the prompt once
  Claude is up.
- devdesk-guard PreToolUse(Bash) hook: permissionDecision "ask" for
  destructive commands (verified to prompt in auto mode); DEVDESK_GUARD and
  guard.local.
- State hook logs Bash commands and derives host tags (ssh targets, CT/VM
  ids); --list carries tags, --peek the last commands; UI shows both.

Closes #21
Closes #18
Closes #27

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

etc/env

@@ -42,5 +42,10 @@ DEVDESK_PUBLIC_URL=https://dev.lotusguild.org
 DEVDESK_MATRIX_WEBHOOK_FILE=/etc/devdesk/matrix-webhook
 DEVDESK_MATRIX_DELAY=30
 
+# 0 turns off the guard that makes Claude ask before destructive commands
+# (pct/zfs/ceph destroy, rm -r /…, force pushes, reboots). Extra rules:
+# /etc/devdesk/guard.local, one "regex<TAB>reason" per line.
+DEVDESK_GUARD=1
+
 # 1 = also enable Remote Control so sessions can be continued from the Claude app.
 DEVDESK_REMOTE_CONTROL=0