BMAD-METHOD/.agents/skills/bmad-story-automator/data/execution-patterns.md

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# Execution Patterns (v1.9.0)
**Purpose:** Critical execution patterns and anti-patterns for the orchestrator.
---
## 🚨 FORBIDDEN EXECUTION PATTERNS (NO EXCEPTIONS)
### NEVER Chain Multiple Workflow Steps
**FORBIDDEN:**
```bash
# ❌ WRONG - Chaining steps in a loop bypasses per-step error handling
for step in create dev; do
session=$("$scripts" tmux-wrapper spawn "$step" ...)
result=$("$scripts" monitor-session "$session" ...)
done
```
**WHY:** If the monitoring task crashes mid-loop, ALL subsequent steps are lost. The orchestrator loses visibility even though tmux sessions may have completed successfully.
**REQUIRED:**
```bash
# ✅ CORRECT - Each step is a separate operation with its own error handling
# Step A: Create
session=$("$scripts" tmux-wrapper spawn create ...)
result=$("$scripts" monitor-session "$session" ...)
"$scripts" tmux-wrapper kill "$session"
# VERIFY state before proceeding
# Step B: Dev (only after create verified)
session=$("$scripts" tmux-wrapper spawn dev ...)
result=$("$scripts" monitor-session "$session" ...)
"$scripts" tmux-wrapper kill "$session"
# VERIFY state before proceeding
```
---
## ALWAYS Verify State After Each Step
After each workflow step completes (create/dev/auto/review), **VERIFY state from source of truth** before proceeding to the next step:
1. **Story file exists and has expected content** (for create-story)
2. **Sprint-status.yaml shows correct status** (for dev-story, code-review)
3. **DO NOT rely solely on monitoring output** - if monitoring fails, verify directly
---
## IF Monitoring Fails
If `story-automator monitor-session` or background task monitoring fails:
1. Check if tmux session still exists: `tmux list-sessions | grep {pattern}`
2. Check session status directly: `"$scripts" tmux-status-check "$session"`
3. Verify story file / sprint-status regardless of monitoring output
4. Only escalate after direct verification confirms failure
**See also:** `monitoring-fallback.md` for detailed fallback patterns.