feat: Claude Code Monitor — lanes, pipelines and a merged workspace

Internal SmartGift build of a Claude Code monitoring dashboard.

Lanes: a durable unit of parallel agent work, one per working directory,
tracked across session restarts. Managed lanes are git worktrees the
dashboard provisions and can reset or remove behind a three-check destroy
guard and a counted preflight; adopted lanes are directories you already
own and are never destroyable.

Pipelines: a lane moves through pipeline stages. A stage the agent declares
with evidence renders green; a stage inferred from the tool-event stream
renders dashed amber and never counts as done. Detection is forward-only
within a 30-minute window, and never writes the declared stage.

Workspace: one page at /run with a lane grid, the selected lane's pipeline,
and a full Claude console behind a disclosure.

plugins/ccam-dashboard/commands/open-dashboard.md

@@ -0,0 +1,35 @@
+---
+description: Print the Agent Monitor dashboard URL and how to start/open it
+---
+
+Print how to open the Claude Code Agent Monitor dashboard. Do not start anything
+or modify data — just print the URL and the relevant commands.
+
+The dashboard URL is:
+
+```
+http://localhost:4820
+```
+
+Print these in a short block:
+
+- **URL:** `http://localhost:4820`
+- **Start (production):** `npm run setup` then `npm start` from the repo root
+- **Start (dev, live reload):** `npm run dev` from the repo root
+
+Detect the platform:
+
+```bash
+uname -s
+```
+
+If the result is `Darwin` (macOS), also suggest opening it directly:
+
+```bash
+open http://localhost:4820
+```
+
+On Linux suggest `xdg-open http://localhost:4820`; otherwise just tell the user
+to open `http://localhost:4820` in a browser.
+
+Keep the output to a few lines — no preamble.

plugins/ccam-dashboard/commands/ping.md

@@ -0,0 +1,30 @@
+---
+description: Check Agent Monitor reachability and print UP/DOWN with latency
+---
+
+Check whether the dashboard API is reachable and report latency.
+
+Run:
+
+```bash
+curl -s -o /dev/null -m 5 -w '%{http_code} %{time_total}s' http://localhost:4820/api/stats
+```
+
+`%{http_code}` is the HTTP status and `%{time_total}` is the total round-trip
+time in seconds.
+
+Print one line:
+
+- If the request succeeds with a 2xx status:
+  ```
+  ✅ UP | http://localhost:4820/api/stats | 200 | 0.042s
+  ```
+  (use the real status code and the real latency, converting seconds to ms if
+  clearer, e.g. `42ms`).
+
+- If `curl` exits non-zero (connection refused/timeout) or the status is not 2xx:
+  ```
+  ❌ DOWN | http://localhost:4820/api/stats unreachable — start it with `npm start` (or `npm run dev`) from the repo root
+  ```
+
+Output only the single line — no preamble. Do not modify any data.

plugins/ccam-dashboard/commands/status.md

@@ -0,0 +1,30 @@
+---
+description: One-line Agent Monitor health + counts summary from /api/stats
+---
+
+Fetch the dashboard stats and print a single-line health summary.
+
+Run:
+
+```bash
+curl -s -m 5 http://localhost:4820/api/stats
+```
+
+Then print exactly one line summarizing health and key counts from the JSON,
+in this shape:
+
+```
+✅ UP | 127 sessions | 3 active | 1 agents | 4,892 events | 42 today | 2 ws
+```
+
+Pull the numbers from these fields: `total_sessions`, `active_sessions`,
+`active_agents`, `total_events`, `events_today`, `ws_connections`.
+
+If the `curl` command fails (non-zero exit, empty body, or unparseable JSON),
+print instead:
+
+```
+❌ DOWN | dashboard not reachable at http://localhost:4820 — start it with `npm start` from the repo root
+```
+
+Do not modify any data. Output only the single summary line — no preamble.