Let outside services and computers' browser notifications give bots work

A bot hook (bot_hooks) is a secret URL, POST /api/hooks/<token>, whose
calls queue the hook's brief plus the raw body as a task, per user and
bot like a routine. Only the token's hash is kept (shown once, rotatable);
an optional HMAC-SHA256 signing secret is stored encrypted. Calls are
rate limited per address and per hook, recorded in bot_hook_events
(pruned daily), deduplicated by delivery id, and a call while the last
run still waits joins its brief instead of queueing another. The payload
is fenced data and HookRunNote tells the bot never to take instructions
from it; failed runs retry like routines.

A hook can instead watch a computer's browser notifications: the app
installs a small watcher that owns org.freedesktop.Notifications on the
sandbox's session bus, so Chrome hands it every notification (it only
looks for that service at start-up, so Chrome is restarted once, never
mid-task), and it posts each one to its hooks, optionally filtered.
Computers reach the app at COMPUTER_APP_URL or the app container's name.

Users make hooks in the conversation's Hooks modal and manage them all
on /admin/routines; bots never create or change hooks.

Co-Authored-By: Claude Opus 5.5 <[email protected]>

src/dict/private-tables.ts

@@ -2,7 +2,8 @@ import type { TableType } from "@/src/types";
 
 /**
  * Tables holding secrets (password hashes, pending login codes, model
- * provider keys, envs, MCP servers' headers and env). They are never reachable through the admin CRUD API, not
+ * provider keys, envs, MCP servers' headers and env, hooks' token hashes
+ * and signing secrets). They are never reachable through the admin CRUD API, not
  * even by super admins.
  */
 export const PrivateTables: TableType[] = [
@@ -11,4 +12,5 @@ export const PrivateTables: TableType[] = [
     "harness_providers",
     "envs",
     "mcp_servers",
+    "bot_hooks",
 ];