feat(ai-tools): omp shared + OpenCode/omp sessions, tokens, subagents; Grok hooks; resume by id

- omp-usage.js / opencode-usage.js: poll each CLI's own session store into
  sessions (tool omp/opencode), token_usage per model and subagent agents;
  transcript routes read them (omp journals, OpenCode's opencode.db).
- Grok runs the Claude hooks in ~/.claude/settings.json: its hooks are now
  recognised (hookEventName + workspaceRoot), tagged tool=grok, and their
  transcript_path dropped instead of being parsed as a Claude transcript.
- Catalog `resumeById`: omp/Grok/Cursor `--resume <id>`, OpenCode
  `--session <id>`; session ids may carry `_`. The client offers Resume for
  any tool that resumes by id.
- Kimi Code and GitHub Copilot leave the catalog (their session stores could
  not be verified).

server/data/ai-tools/README.md

@@ -6,6 +6,15 @@ One JSON file per AI coding CLI AgentHub can run in a lane. Loaded by
 `DASHBOARD_AI_TOOLS_DIR` with the same `id` replaces the built-in one (it may
 not set `launcher`).
 
+## Resume by id
+
+`resumeById` (string array, e.g. `["--resume"]`): the flag(s) a NAMED session's
+id follows, as one more argv element — `pty-run.js` emits them in place of
+`resume` when a start carries `resumeSessionId`, and only for an id that starts
+with a letter or digit. A tool without it (and without a `launcher`) refuses a
+resume by id (`EUNSUPPORTED`) rather than start fresh under a "resume".
+Built-in: omp, Grok and Cursor (`--resume`), OpenCode (`--session`). A session id may carry `_` (OpenCode's `ses_…`).
+
 ## Install / update (A2)
 
 Two optional fields, honoured only in built-in files and in the copy of the