refactor!: rebrand CCAM to AgentHub

Clean break, no compatibility alias. Renames the product name, the CLI
binary (`ccam` -> `agenthub`), the env var prefix (`CCAM_` ->
`AGENTHUB_`), the Prometheus metric namespace (`ccam_*` ->
`agenthub_*`), the tmux session prefix (`ccam-lane-<id>` ->
`agenthub-lane-<id>`), the per-repo runtime profile directory
(`.ccam/profile` -> `.agenthub/profile`), the lanes state root
(`~/.claude/ccam-lanes` -> `~/.claude/agenthub-lanes`), the bundled
plugins (`plugins/ccam*` -> `plugins/agenthub*`) and their slash
commands (`/ccam-doctor` -> `/agenthub-doctor`, `/ccam:*` ->
`/agenthub:*`).

Because there is no alias, an existing install has to be updated by
hand: rename its `.ccam/profile` directory and any `CCAM_*` variables,
and reinstall the plugin under its new name.

Two other name families are deliberately left alone here, since they are
not just strings: the `Claude-Code-Monitor` repository/marketplace name,
and the `agent-dashboard` npm package plus its `~/.claude/agent-dashboard`
runtime directory, which holds the live database and needs a migration
rather than a rename.

Verified: server 1406/1406, client 459/459, `grep -i ccam` clean across
tracked files, `openapi.yaml` regenerated (95 paths, unchanged count).

plugins/agenthub-devtools/commands/doctor.md

@@ -0,0 +1,36 @@
+---
+description: Quick connectivity + health probe of the Agent Monitor dashboard.
+---
+
+Run a fast health probe against the Agent Monitor dashboard at
+`http://localhost:4820`. Do two checks and print OK / FAIL for each.
+
+1. **API + stats** — fetch core stats:
+   ```bash
+   curl -s -o /dev/null -w '%{http_code}' http://localhost:4820/api/stats
+   curl -s http://localhost:4820/api/stats
+   ```
+   PASS if HTTP 200 and the body is valid JSON. From the body, surface
+   `total_sessions`, `active_sessions`, `total_events`, and `events_today`.
+
+2. **Self-update status** — confirm the update subsystem responds:
+   ```bash
+   curl -s -o /dev/null -w '%{http_code}' http://localhost:4820/api/updates/status
+   curl -s http://localhost:4820/api/updates/status
+   ```
+   PASS if HTTP 200 and valid JSON. Surface whether an update is available and
+   the current vs latest version if present.
+
+Print a compact report, one line per check:
+
+```
+Agent Monitor Doctor
+  API /api/stats ............ OK  (sessions=12 active=1 events=3480 today=57)
+  /api/updates/status ....... OK  (up to date — v1.x.x)
+
+Overall: OK (2/2)
+```
+
+Use ✅ OK / ❌ FAIL markers. If any curl fails to connect (non-200 or no
+response), mark that check FAIL and end with: "Dashboard unreachable — start it
+with `npm start` from the repo root." Keep it to the report only; no extra prose.

plugins/agenthub-devtools/commands/export.md

@@ -0,0 +1,30 @@
+---
+description: Export Agent Monitor data (sessions/events/analytics/costs/all) as json/csv/md.
+argument-hint: "[sessions|events|analytics|costs|all] [json|csv|md]"
+---
+
+Export Agent Monitor data using the dashboard export endpoint. Arguments:
+**$ARGUMENTS** — the first token is the data `type`, the second is the `format`.
+
+- `type` ∈ `sessions | events | analytics | costs | all` (default `all`)
+- `format` ∈ `json | csv | md` (default `json`)
+
+Set `TYPE` and `FORMAT` from the args (apply the defaults if missing), then run:
+
+```bash
+TYPE="${1:-all}"; FORMAT="${2:-json}"
+curl -s "http://localhost:4820/api/settings/export?type=${TYPE}&format=${FORMAT}" \
+  -o "agenthub-export-${TYPE}.${FORMAT}"
+```
+
+Then:
+1. Confirm the file was written and report its absolute path and byte size.
+2. Preview the result: for `csv`/`md` print the first ~15 lines; for `json`
+   print a pretty-printed head (e.g. `head -c 1500` or the first array element
+   plus the record count).
+3. Print a one-line summary: `Exported <type> as <format> → <path> (<N> records / <bytes>)`.
+
+If the curl returns a non-200 or an error body, do not claim success — print the
+error and remind the user to start the dashboard with `npm start` from the repo
+root. Do not delete or overwrite any existing data; this command only reads via
+the export endpoint and writes a new export file.

plugins/agenthub-devtools/commands/tail-events.md

@@ -0,0 +1,33 @@
+---
+description: Show the latest N ingested events with timestamp, event_type, and tool_name.
+argument-hint: "[N]"
+---
+
+Show the most recent events from the Agent Monitor dashboard. Argument:
+**$ARGUMENTS** — `N`, the number of events to show (default 20).
+
+Fetch recent events and take the newest N:
+
+```bash
+N="${1:-20}"
+curl -s "http://localhost:4820/api/events?limit=${N}" | jq -r '.[] | "\(.timestamp)\t\(.event_type)\t\(.tool_name // "-")"'
+```
+
+The `/api/events` list is returned newest-first; show the most recent `N`.
+Render a compact, aligned table — one row per event:
+
+```
+TIME                  EVENT_TYPE     TOOL_NAME
+2026-06-25T14:03:11Z  PostToolUse    Bash
+2026-06-25T14:03:09Z  PreToolUse     Bash
+2026-06-25T14:02:58Z  Stop           -
+```
+
+Include `event_type` (PreToolUse, PostToolUse, Stop, SubagentStop, SessionStart,
+SessionEnd, Notification, Compaction, APIError, TurnDuration) and `tool_name`
+when present (use `-` for events without a tool). End with a one-line count:
+`Showing latest <N> events.`
+
+If the request returns a non-200 or empty body, say so and tell the user to start
+the dashboard with `npm start` from the repo root. Read-only — never POST or
+modify events.