[CI] Step ordering violation: implementer before planner detected in batch session

[akaszubski]

Problem

The pipeline_intent_validator detected an implementer invocation before planner in the batch-20260408-185147 session. This violates the required STEP 2 (planner) before STEP 5 (implementer) ordering.

Repo: autonomous-dev
Session: 2026-04-08 batch-20260408-185147

Evidence

From validate_pipeline_intent() finding (CRITICAL severity, pattern: step_ordering):

"implementer ran before planner (expected planner first)"

The first event sequence in the session log shows implementer appearing before the first planner invocation. This occurred for the --light mode issues (#716, #723, #724, #725, #726) which ran before #709 in the session log.

Context

The --light mode pipeline is: planner, implementer, doc-master, continuous-improvement-analyst. The step_ordering check detected implementer before planner, which could indicate:

1. The orchestrator dispatched implementer without waiting for planner to complete.
2. A --fix mode issue ([HOOK-REGRESSION] TestSubagentTypePriority: 6 new failures — mock_check missing pipeline_mode kwarg #724) ran before the --light issues and its implementer was logged before the first --light planner.

If this is a cross-mode false positive (the --fix mode implementer ran legitimately before --light planners), the step_ordering detection logic needs to be scoped per-issue rather than globally across the batch session.

Suggested Fix

1. Verify whether the ordering violation is genuine (implementer before planner for the same issue) or a cross-issue artifact in global batch ordering detection.
2. If genuine: add an explicit gate in commands/implement.md --light mode that prevents implementer invocation before planner output is collected.
3. If false positive: scope step_ordering checks to per-issue boundaries in pipeline_intent_validator.py to avoid cross-issue contamination.

Plugin Version: 3.50.0 (ccae0a3)

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Filed automatically by continuous-improvement-analyst

[akaszubski]

Implemented in 20a7339