fix: event-loop freezes, plugin-install boot crash, tmux attach/scrollbar, Codex transcripts

- GET /api/workflows: one LEAD() window pass in a read worker (read-pool.js,
  workflow-stats.js); idx_events_session restored, idx_events_tool added
- compat-sqlite gains function/pluck/readonly so a plugin install without a
  better-sqlite3 build boots again; antigravity-usage uses db.js's Database
- install-hooks adds no checkout hooks while the agenthub plugin is enabled
  (events were doubled)
- terminal attach runs the live tmux server's own binary; the pane scrollbar
  gets a visible 2-column style, and claude panes start with
  CLAUDE_CODE_DISABLE_ALTERNATE_SCREEN=1 so tmux keeps history to scroll
- Codex sessions' conversation in GET /api/sessions/:id/transcript
- Codex/Antigravity sessions claimed by their workspace without hooks
- UI-audit follow-ups, docs and OpenAPI

server/lib/codex-usage.js

@@ -36,6 +36,7 @@ const fs = require("node:fs");
 const path = require("node:path");
 const readline = require("node:readline");
 const { db, stmts } = require("../db");
+const { claimToolSessions } = require("./dashboard-runs");
 const { getCodexHome, codexHomes } = require("./codex-home");
 const { allRolloutFiles, FUTURE_SLACK_MS } = require("./codex-ingest");
 const pricingSync = require("./pricing-sync");
@@ -320,6 +321,7 @@ function writeSession(sessionId, names, now) {
         lastWrite,
         JSON.stringify({ source: "codex-rollout" })
       );
+    claimToolSessions(sessionId); // its workspace, before the broadcast
     // Every usage row of a Codex session is this module's, so it is rewritten
     // whole: a model gone from a re-read journal leaves no stale row behind.
     clearUsage.run(sessionId);