feat: analytics parity — tool cost, date ranges, budgets, query explorer, replay, snapshots (v2.4.0)

Analytics parity phases 2–7 (docs/plans/analytics-parity/), built on
138e706 and ported onto v2.3.1:
- Cost by AI tool (?tool= on cost/analytics/stats/workflows, by_tool,
  Codex fast/priority and flex tiers, agenthub_cost_usd_total{tool,model})
- Date ranges (from/to) on cost/analytics/workflows; Analytics range select
  with Today / This week (Monday) / This month (1st) / 7d / 30d / 90d / All /
  Custom; workflow filters carried into workflow-stats.js (read worker)
- Budgets and cost alerts as alert rule types (alert_rules rebuilt without
  its rule_type CHECK), GET /api/budgets/status, rule preview, spend pace,
  status-bar budget chip; rules stay editable in place
- Query Explorer (/query, allowlisted sort, CSV/JSON export) and scheduled
  reports (report_definitions/report_runs, Settings → Reports)
- Session Replay tab and immutable snapshots (session_snapshots, /snapshot/:token)
- Remote Codex sync, push ingest with a hashed token, privacy redaction and
  ignored folders (Settings → Data), Cursor sessions (no cost)
- Read-only MCP server, statusline, Grafana/Prometheus files

Also: resizable sidebar, pet run/wave animations, the workspace home keeps a
half-typed prompt, and the pre-commit hook runs only the related tests for a
small commit.

docs/CLI.md

@@ -21,6 +21,7 @@ The complete guide to `agenthub`, the command-line interface to AgentHub — the
   - [Import](#import)
   - [Remote Sources](#remote-sources)
   - [Workspaces](#workspaces)
+  - [Integrations](#integrations)
   - [Administration](#administration)
 - [Safety Model](#safety-model)
 - [Output & Scripting](#output--scripting)
@@ -220,7 +221,7 @@ Manage the remote (SSH) machines this dashboard pulls Claude Code history from
 | Command | Description |
 | ------- | ----------- |
 | `agenthub remote-sources` (alias `remotes`) | List configured sources with id, auto-sync on/off, status, label, host, **session count**, and last-sync time, followed by a totals line (sources / auto-syncing / sessions collected) |
-| `agenthub remote-sources add --label <name> --host <user@host> [--port N] [--identity <path>] [--remote-home <path>] [--disabled]` | Add a source. `--host` is an ssh destination (`user@host`) or a `~/.ssh/config` alias; `--disabled` skips it in the background poller |
+| `agenthub remote-sources add --label <name> --host <user@host> [--port N] [--identity <path>] [--remote-home <path>] [--codex] [--codex-home <path>] [--disabled]` | Add a source. `--host` is an ssh destination (`user@host`) or a `~/.ssh/config` alias; `--codex` also pulls its Codex history (from `--codex-home`, default `~/.codex`); `--disabled` skips it in the background poller |
 | `agenthub remote-sources test <id>` | Probe SSH connectivity and check the remote `~/.claude/projects` exists; exits non-zero on failure |
 | `agenthub remote-sources sync [id]` | Pull history now — one source by id, or **all** sources when the id is omitted. Prints imported / tagged counts |
 | `agenthub remote-sources rm <id> [--purge]` | Remove a source (its imported sessions are detached back to `local` by default; `--purge` also **deletes** them) |
@@ -265,6 +266,15 @@ Resolution order, shared by every cwd-resolving command: `--workspace` (old name
 
 Because a workspace's services are fully detached, restarting the dashboard (or `agenthub update`) never stops a running stack.
 
+### Integrations
+
+| Command | Description |
+| ------- | ----------- |
+| `agenthub mcp` | Run the read-only MCP server on stdio (`mcp/server.js`). Register it with `claude mcp add agenthub -- agenthub mcp`; never registered automatically. `AGENTHUB_URL` overrides the dashboard it asks — see [MCP.md](MCP.md) |
+| `agenthub statusline` | Render the Claude Code statusline from the statusline JSON on stdin (what a plugin install's `statusLine` runs) — see [STATUSLINE.md](STATUSLINE.md) |
+| `agenthub statusline install [--force]` | Write AgentHub's `statusLine` into `$CLAUDE_HOME/settings.json` (default `~/.claude/settings.json`). Refuses (exit 1) when another `statusLine` is there unless `--force`; the old file is backed up beside itself as `settings.json.agenthub-backup-<timestamp>` |
+| `agenthub statusline uninstall [--force]` | Remove AgentHub's `statusLine` (another one only with `--force`), with the same backup |
+
 ### Administration
 
 | Command | Description |