ableton-mcp-ai/docs/SPRINT_v0.1.17_VALIDATION_REPORT.md

Sprint v0.1.17 Validation Report

Date: 2026-04-01
Status: ❌ INCOMPLETE - Thresholds Not Met
Report Author: Opencode Agent

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Executive Summary

Sprint v0.1.17 "Persisted Validation and Hybrid Coherence Closure" has NOT achieved its primary goal. While all P0-P5 code implementations were successfully deployed, the generated sessions are not meeting the required thresholds.

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Sprint Goal Thresholds

Threshold	Target	Status
coherence_score	>= 6.5	❌ NOT MET
pack_coherence.music	>= 0.65	❌ NOT MET
pack_coherence.overall	>= 0.50	❌ NOT MET
mandatory_midi_hook.materialized	true	❌ NOT MET
generation_mode	library-first-hybrid	❌ NOT MET
family_adherence_rate	>= 0.60	❌ NOT MET

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Session Analysis

Latest Session: 0de71b5cf9c7

Metric	Value	Pass/Fail
session_id	0de71b5cf9c7	✅ Present
timestamp	1775074790.2418113	-
genre	reggaeton	-
bpm	99.384	-
key	Am	-
coherence_score	5.5	❌ FAIL (target >= 6.5)
coherence_verdict	WEAK - Lacks coherence, needs structural fixes	❌ FAIL
generation_mode	None	❌ FAIL (target: library-first-hybrid)
library_first_mode	None	❌ FAIL (target: true)
pack_coherence	Not present in manifest	❌ FAIL
mandatory_midi_hook.materialized	false	❌ FAIL (target: true)
mandatory_midi_hook.track_index	None	❌ FAIL
piano_presence.has_piano	false	-
piano_presence.has_hybrid_piano	None	❌ FAIL (target: true)
piano_presence.piano_score	0.0	❌ FAIL
reference_name	ejemplo.mp3	✅ Present

Previous Session: f4ae30771df5

Metric	Value	Pass/Fail
session_id	f4ae30771df5	✅ Present
coherence_score	5.6	❌ FAIL (target >= 6.5)
generation_mode	midi-first	❌ FAIL (target: library-first-hybrid)
library_first_mode	false	❌ FAIL
mandatory_midi_hook	Present but not materialized	⚠️ PARTIAL
piano_presence	None detected	❌ FAIL

Previous Session: e3c3691cc922

Metric	Value	Pass/Fail
session_id	e3c3691cc922	✅ Present
coherence_score	4.6	❌ FAIL (target >= 6.5)
generation_mode	library-first-hybrid	✅ PASS
library_first_mode	true	✅ PASS
coherence_verdict	WEAK - Lacks coherence, needs structural fixes	❌ FAIL

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P0-P5 Implementation Status

✅ P0: Job Persistence Infrastructure

Status: DEPLOYED

• Job history file: ~/.abletonmcp_ai/generation_jobs.json
• [P0] log markers present in server.py
• Job state persistence and recovery implemented

✅ P2: Music Bus Coherence Tightening

Status: DEPLOYED

• Bus-aware pack coherence logic in place
• Target: music >= 65%, overall >= 50%
• DOMINANT_PALETTE tracking implemented
• PACK_COHERENCE log markers present

⚠️ P3: Piano Hybrid Truth Enforcement

Status: DEPLOYED BUT NOT ACTIVATED

• Code present in _calculate_piano_presence()
• [P3_HYBRID_TRUTH_ENFORCED] marker present
• Issue: Piano/hybrid piano not being detected or materialized
• No MIDI hook actually created in tracks

✅ P4: Duplicate Layer Consolidation

Status: DEPLOYED

• _consolidate_duplicate_layers() function present
• Musical contrast detection implemented

✅ P5: Senior Validation Metrics

Status: DEPLOYED

• _validate_senior_metrics() function present
• Threshold validation for all metrics
• Senior dashboard extraction implemented

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Root Cause Analysis

Primary Issues

1. Library-First-Hybrid Mode Not Triggering

   • Sessions are generating in midi-first mode or no mode set
   • library_first_mode is None or False instead of True
   • This prevents pack coherence calculation and bus-aware selection

2. Piano Hybrid Truth Not Materializing

   • mandatory_midi_hook.materialized is consistently false
   • has_hybrid_piano is None or false
   • The P3 hook reservation is happening but not actually creating tracks

3. Pack Coherence Metrics Missing

   • pack_coherence field not being written to manifest
   • DOMINANT_PALETTE logs show coherence calculation but not persisting
   • Missing connection between layer selection audit and manifest

4. Coherence Score Below Threshold

   • All sessions scoring 4.6-5.6 (target: >= 6.5)
   • Structural fixes still needed in arrangement

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Recommendations for Next Sprint

Critical Fixes Needed

1. Fix Library-First-Hybrid Mode Detection

   • Ensure library_first_mode=true when reference_path is provided
   • Verify mode is being passed through generation pipeline
   • Add explicit mode enforcement in generate_track

2. Fix MIDI Hook Materialization

   • Debug why mandatory_midi_hook.materialized remains false
   • Ensure P3 hook actually creates a MIDI track
   • Add validation that hook is materialized before completing

3. Fix Pack Coherence Persistence

   • Connect layer selection audit to manifest persistence
   • Ensure pack_coherence dict is written to generation_manifests.json
   • Add senior validation to verify coherence before marking complete

4. Improve Coherence Scoring

   • Structural arrangement fixes needed
   • Consider additional musical theme enforcement
   • Evaluate judge results integration

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Code Locations

P0-P5 Implementations

• server.py lines 598-700: P0 Job persistence
• server.py lines 712-880: P3 Piano hybrid truth
• server.py lines 3497-3620: P4 Duplicate consolidation
• server.py lines 8810-8997: P5 Senior validation
• reference_listener.py lines 143-449: P2 Bus-aware coherence

Manifest Files

• C:\Users\ren\.abletonmcp_ai\generation_manifests.json
• C:\Users\ren\.abletonmcp_ai\coherence_reports\

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Conclusion

Sprint v0.1.17 is NOT COMPLETE.

While the P0-P5 code implementations are deployed, the system is not meeting the required thresholds for a successful library-first-hybrid generation with piano truth validation. The next sprint must focus on:

1. Fixing the library-first-hybrid mode activation
2. Ensuring MIDI hook materialization
3. Connecting pack coherence to manifest persistence
4. Raising coherence scores above 6.5

Do not declare Sprint v0.1.17 complete until a session is generated with:

• coherence_score >= 6.5
• pack_coherence.music >= 0.65
• pack_coherence.overall >= 0.50
• mandatory_midi_hook.materialized == true
• generation_mode == "library-first-hybrid"

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Report Generated: 2026-04-01
Session Analyzed: 0de71b5cf9c7, f4ae30771df5, e3c3691cc922