ET-006 was handed to two different tasks because M-6 derives work_item_id from
the Plane sequence_id, which can collide -> the two tasks shared a branch/worktree
slug prefix and stepped on each other.
2a: ensure_unique_work_item_id() is a uniqueness-guard LAYERED ON TOP of the M-6
derive (derive is untouched): if the derived ET-NNN already exists in tasks for
the repo, it walks forward to the next free number. Applied in start_pipeline
after the derive.
2b (defense-in-depth): worktree is keyed by branch; if the resulting branch is
already owned by another task in the repo, disambiguate it with the unique
work_item_id + plane id so two tasks can never share a worktree.
Feature 4. claude is now launched with --output-format json; the run-log trailing
result JSON is parsed (defensively, never fatal) for usage + total_cost_usd. New
idempotent ALTERs add input_tokens/output_tokens/cache_read_tokens/cost_usd to
agent_runs; the launcher monitor records usage per run, posts a per-agent finish
comment under that agent bot (e.g. Developer gotov · 45.2k in / 12.1k out · $0.21),
and the deployer posts an end-of-task summary (SUM over agent_runs GROUP BY agent)
on done. New src/usage.py holds parse/format/record/summary helpers; test_usage.py
covers parsing a real CLI JSON blob, NULL-on-garbage, recording, formatting, and the
per-task aggregate.
ORCH-6: get_next_work_item_id(repo, prefix="ET") numbers per (repo, prefix)
so orchestrator issues number ORCH-001 independently of the ET sequence.
Default prefix stays ET for backward compatibility.
- Add git fetch+checkout in agent launch cmd (ensures correct branch)
- Add git fetch+checkout in _monitor_agent before commit/push
- Post start comment in Plane when analyst launches
- Post :approved: request comment after analyst completes successfully
- Branch lookup moved before cmd construction for reuse
