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-productivity/commands/standup.md

@@ -0,0 +1,22 @@
+---
+description: Quick daily standup from today's Claude Code sessions — grouped by project, with cost and errors.
+argument-hint: "[today|yesterday]"
+---
+
+Generate a fast daily standup from Agent Monitor data at `http://localhost:4820`.
+
+Target day from **$ARGUMENTS**: "today" or empty = the last calendar day; "yesterday" = the day before. If the dashboard is unreachable, tell the user to start it with `npm start` from the repo root.
+
+1. Fetch sessions:
+   `curl -s 'http://localhost:4820/api/sessions?limit=50'`
+   Keep sessions whose `started_at` falls on the target day.
+2. Fetch cost: `curl -s http://localhost:4820/api/pricing/cost` for the `total_cost` and per-model `breakdown`.
+
+Print a compact standup (aim for a 30-second read):
+
+- **One-line summary** suitable for pasting into Slack (e.g. "5 sessions across 3 projects, 4 done, $0.7421").
+- **Done / In progress** grouped by project (`cwd`): per group list session count and statuses (`completed`, `running`, `error`, `abandoned`).
+- **Errors / blockers**: any session with `status` `error` or `abandoned`; name the project.
+- **Numbers**: total sessions, completion rate (completed / total), and estimated cost in USD to 4 decimals.
+
+Keep it terse — this is a one-shot, not a full report. Cite only numbers returned by the API.