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Phase 3E Closure Report v0.2.5

Phase 3E is the controlled transition and intervention-aware validation layer. This report assesses whether its deliverables are complete and whether the phase can graduate.

Phase Mission (from charter)

Validate the relationship between events, observations, interventions, workflow conditions and topology transitions under controlled or intervention-aware conditions, without entering Phase 4 theory finalization.

Corpus Snapshot at Closure

Metric Value
Data sessions 1,517
Metadata sessions 992
Events 131,952
Runtime breadth 7
Task breadth 9

Lane distribution:

Lane Sessions Events
direct_prompt_native 101 32,141
superpowers_workflow_intervention 8 42,465
controlled_prompt_morphology 3 135
routed_prompt_intervention 0 0
unlabeled 880 16,160

Deliverable 1: Lane Baseline (3E-1) — COMPLETE

Four lanes characterized with per-lane session counts, event counts, runtime distributions, and task type distributions. Baseline frozen at lane_baseline_v0.2.5.md.

Key finding: native lane (101 sessions) is the only lane with statistical mass. Intervention lanes are infrastructure-ready but corpus-sparse.

Deliverable 2: Intervention Lane Annotation (3E-2) — COMPLETE

Annotation pass reviewed 18 Skill-tool candidate sessions. Results:

Evidence Level Count Action
Strong (Skill+PlanMode+Workflow) 1 Annotated as superpowers
Moderate (Skill+PlanMode) 2 Annotated as superpowers
Weak (Skill only) 15 Deferred (insufficient evidence)
Routed 0 Honestly reported

Annotation criteria, evidence levels, and non-inference rule documented in intervention_lane_annotation_plan_v0.2.5.md and intervention_lane_candidates_v0.2.5.md.

Deliverable 3: Capture Instrumentation (3E-3) — COMPLETE

  • SOURCES expanded to accept routed_prompt_intervention, superpowers_workflow_intervention, controlled_prompt_morphology
  • INTERVENTION_LANES constant defined
  • SessionMetadata expanded with intervention_lane, causetrace_tags, intervention_evidence_source, intervention_evidence_level
  • Capture tag format specs defined for prompt-routing-skill, superpowers, and controlled prompt morphology
  • Upstream tools updated (prompt-routing-skill SKILL.md, superpowers using-superpowers SKILL.md)
  • causetrace metadata-set --intervention-lane, annotate --tag, corpus --lane CLI tooling built
  • corpus lane-count and corpus gate-status subcommands operational
  • detect-tags command for scanning session JSONL for causetrace_tags YAML blocks

Deliverable 4: Parser Detection Gate — COMPLETE

Activation gate system implemented: parser detection for an intervention lane requires >=5 explicitly tagged sessions before activation. Rationale: premature detection on 1-2 samples risks encoding heuristic patterns that mislabel future sessions.

Lane Tagged Required Gate
superpowers_workflow_intervention 5 5 OPEN
routed_prompt_intervention 0 5 BLOCKED
controlled_prompt_morphology 0 5 BLOCKED

Gate opened for superpowers_workflow_intervention on 2026-06-13 after 5 headless Claude Code sessions accumulated workflow intervention tags.

Deliverable 5: Phase 2 Auto-Detection — COMPLETE

With superpowers gate OPEN, Phase 2 enrichment recognition implemented:

  • _auto_detect_intervention_tags() scans newly enriched session JSONL for causetrace_tags YAML blocks
  • Auto-sets task_source, intervention_lane, causetrace_tags, intervention_evidence_level, intervention_evidence_source in metadata sidecar
  • Wired into all three enrichment handlers (enrich, enrich-opencode, enrich-codex)
  • JSON-escaped newline handling fixed in detect_causetrace_tags

Tag format detection verified against session 7e8574ec (actual YAML blocks in tool_input). Other 4 tagged sessions carry tags in metadata sidecars only (manually annotated during Phase 3E-3 headless runs).

Deliverable 6: Tier 2 Readiness — DEFERRED (honest)

Tier 2 requires failure/near-failure density that the current corpus does not provide:

Criterion Current Required Status
Native failure sessions (success=False) 1 10 NOT MET
Native near-failure (human_intervention=True) 5 10 NOT MET
Multi-runtime failure coverage 6 3 MET

Failure and near-failure samples remain genuinely rare in real agent behavior. This mirrors the Phase 3D Tier 2 deferral finding. Background acquisition continues.

Deferred Hypotheses — Carried Forward

Tier 2 (failure / intervention morphology)

  • H-FM-001, H-FM-002, H-IM-001, H-IM-002, H-EV-004, H-EV-005

Target: opportunistic validation when native failure >= 10, near-failure >= 10.

Tier 3 (controlled benchmark / external lane)

  • H-OT-001, H-OT-002, H-EG-001, H-EG-002, H-EV-002, H-EV-003

Activate when controlled benchmark protocol is operational.

Tier 4 (literature-inspired, registry-only)

  • H-EV-001, H-LH-001, H-LH-002

Maintain in registry for future corpus expansion.

What Phase 3E Did NOT Do (per charter)

  • Did not enter Phase 4 theory finalization
  • Did not merge intervention lanes into native baseline
  • Did not implement heuristic parser detection for blocked lanes
  • Did not implement prediction, anomaly detection, or auto-diagnosis
  • Did not promote hypotheses to conclusions without corpus-backed validation
  • Did not change topology taxonomy or readiness gates without justification
  • Did not make cross-lane comparisons beyond trend reporting
  • Did not make universal prompt policy recommendations

Phase 3E Graduation Assessment

Phase 3E infrastructure work is complete. All designed sub-phases (3E-1 through 3E-3) delivered. Phase 2 auto-detection is operational for the one lane that met the gate threshold.

Tier 2 validation is honestly deferred — the bottleneck is corpus failure density, not methodology or infrastructure. This is a data problem, not a design problem.

Recommendation: Graduate Phase 3E. Mark complete. Carry deferred hypotheses and background acquisition forward.

Next Phase

Phase 4 is open for evidence-graded theory drafting and consolidation only. It is explicitly NOT open for:

  • Prediction, anomaly detection, or automatic diagnosis
  • Universal prompt policy defaulting
  • Promotion of exploratory findings to stable theory without additional evidence
  • Cross-lane aggregation without lane disclosure
  • Phase 5 (evaluation / diagnostics)

Phase 4-1 deliverable: theory candidate inventory with evidence grading (supported, supported_with_caveat, exploratory, inconclusive, deferred). Each candidate must carry corpus snapshot, lane scope, denominator, runtime/task caveats, and falsification condition.

Phase 3E operating rules carry forward into Phase 4 unchanged.