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-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.