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.
2026-07-29 17:07:45 +07:00
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+---
+description: Show current Claude Code spend versus a budget number
+argument-hint: "[monthly-$]"
+---
+
+Show current Claude Code spend against the budget **$ARGUMENTS** (a monthly dollar
+figure, e.g. `50`). If `$ARGUMENTS` is empty, just report spend-to-date and ask for a budget.
+
+1. Fetch current spend:
+   ```
+   curl -s http://localhost:4820/api/pricing/cost
+   ```
+   Read `total_cost` (spend-to-date) and the per-model `breakdown`.
+
+2. Print a concise budget status:
+   - **Spend to date**: `total_cost` as USD to 4 decimals.
+   - **Budget**: `$ARGUMENTS`/month.
+   - **Consumed**: `total_cost / budget × 100`% — with a ▲/▼ vs. the linear pace expected for today's day-of-month (`budget × day_of_month / days_in_month`).
+   - **Verdict**: under budget / on pace / over budget.
+   - **Top 3 models by cost** from the breakdown (model, cost, % of total).
+
+If the dashboard is unreachable (curl fails / empty), tell the user to start it with
+`npm start` from the repo root. Keep the output to a few lines plus one small table.
+Currency as USD to 4 decimal places. Read-only — do not modify anything.