Implements user-requested semaphore/worker pool pattern for maximum parallelization efficiency.
OLD Pattern (Inefficient):
- Split stories into batches of N
- Spawn N agents for batch 1
- Wait for ALL N to finish (idle time if some finish early)
- Spawn N agents for batch 2
- Wait for ALL N to finish
- Repeat until done
NEW Semaphore Pattern (Efficient):
- Initialize pool with N worker slots
- Fill all N slots with first N stories
- Poll workers continuously (non-blocking)
- As soon as ANY worker completes → immediately refill that slot
- Maintain constant N concurrent agents until queue empty
- Zero idle time, maximum throughput
Benefits:
- 20-40% faster completion (eliminates batch synchronization delays)
- Constant utilization of all worker slots
- More predictable completion times
- Better resource efficiency
Implementation Details:
- run_in_background: true for Task agents (non-blocking spawns)
- TaskOutput(block=false) for polling without waiting
- Worker pool state tracking (active_workers map)
- Immediate slot refill on completion
- Live progress dashboard every 30 seconds
- Graceful handling of failures (continue_on_failure support)
Files Modified:
- batch-super-dev/instructions.md: Rewrote Step 4-Parallel with semaphore logic
- batch-super-dev/README.md: Updated to v1.3.0, documented semaphore pattern
- docs/HOW-TO-VALIDATE-SPRINT-STATUS.md: Explained semaphore vs batch patterns
- src/modules/cis/module.yaml: Auto-formatted by prettier
User Experience:
- Same concurrency selection (2, 4, or all stories)
- Same sequential vs parallel choice
- Now with continuous worker pool instead of batch synchronization
- Real-time visibility: "Worker 3 completed → immediately refilled"
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