Update completed dotfiles artifacts

projects/dotfiles/049-pi-subagents-batch-concurrency-task.md

@@ -1,5 +1,8 @@
 ---
-status: open
+status: resolved
+claimed-by: "019fba91-eabf-76ae-b086-a37ac061d6e8"
+claimed-at: "2026-08-01T14:36:01-04:00"
+completed-at: "2026-08-01T14:44:11-04:00"
 parent: "[[027-pi-subagents-implementation-spec-task]]"
 blocked-by:
   - "[[046-pi-subagents-minimal-tracer-bullet-task]]"
@@ -21,13 +24,17 @@ The supervisor should preserve accepted child records, report per-child spawn fa
 
 ## Acceptance criteria
 
-- [ ] Batch spawn validates every entry with the same rules as single spawn.
-- [ ] A batch request returns accepted child ids and initial metadata without waiting for completion.
-- [ ] `subagent_list` shows active children and a bounded recent terminal history.
-- [ ] `maxConcurrent` limits simultaneous running children while preserving queued records.
-- [ ] Partial spawn failures are reported per requested child without losing accepted children.
+- [x] Batch spawn validates every entry with the same rules as single spawn.
+- [x] A batch request returns accepted child ids and initial metadata without waiting for completion.
+- [x] `subagent_list` shows active children and a bounded recent terminal history.
+- [x] `maxConcurrent` limits simultaneous running children while preserving queued records.
+- [x] Partial spawn failures are reported per requested child without losing accepted children.
 
 ## Implementation Notes
 
 All spawns remain non-blocking.
 Do not add a wait-mode parameter in this slice.
+
+Resolved in branch `pi-subagents-tracer-bullet`, commit `e7a700f`.
+Added `subagent_batch`, `/subagent-batch`, queue-backed `maxConcurrent`, bounded recent terminal history in list output, and per-entry batch failure reporting.
+Verified with supervisor tests, live Pi RPC batch smoke, extension derivation build, and `nix flake check`.