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.

monitoring/prometheus/ccam-rules.yml

@@ -0,0 +1,21 @@
+# Recording rules derived from live CCAM scrapes — no synthetic data.
+# Pre-aggregates common queries so Prometheus Graph/Explore autocomplete
+# surfaces useful series immediately after the ccam target comes up.
+groups:
+  - name: ccam_recording
+    interval: 15s
+    rules:
+      - record: ccam:sessions:total
+        expr: sum(ccam_sessions)
+      - record: ccam:sessions:active
+        expr: ccam_sessions{status="active"}
+      - record: ccam:sessions:completed
+        expr: ccam_sessions{status="completed"}
+      - record: ccam:agents:working
+        expr: ccam_agents{status="working"}
+      - record: ccam:events:rate5m
+        expr: rate(ccam_events_total[5m])
+      - record: ccam:tokens:rate5m
+        expr: sum by (kind) (rate(ccam_tokens_total[5m]))
+      - record: ccam:tokens:total
+        expr: sum(ccam_tokens_total)