Sync: Complete project state with all MEGA SPRINT V1-V3 features and Codex stubs
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docs/SPRINT_v0.1.18_VALIDATION_REPORT.md
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docs/SPRINT_v0.1.18_VALIDATION_REPORT.md
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# Sprint v0.1.18 Validation Report
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**Date:** 2026-04-01
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**Status:** ⚠️ **PARTIAL IMPLEMENTATION - VALIDATION BLOCKED**
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**Report Author:** OpenCode Agent (Kimi K2)
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**Reviewed by:** Codex
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---
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## Executive Summary
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Sprint v0.1.18 "Coherence-First Instrumental Mode" has **partial implementation**. Code changes for P0-P4 were deployed but **could not be fully validated** due to generation pipeline issues.
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### Key Blocker
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The generation job (`5b6a3df6e04a`) became stuck at 10% progress during `generating_config` stage, preventing validation of the new coherence metrics schema and instrumental-only mode.
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---
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## Implementation Status
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### ✅ P0: Stable Coherence Metrics Schema - IMPLEMENTED
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**Changes made to `server.py` (after line 9196):**
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Added stable `coherence_metrics` section with:
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- `family_adherence_rate`: Extracted from harmonic layers
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- `harmonic_layers_evaluated`: Count of harmonic layers
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- `manual_vocals_enabled`: Set to `True` (manual-only policy)
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- `auto_vocal_layers_enabled`: Set to `False` (instrumental-only mode)
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- `pack_coherence`: Object with `overall`, `music`, `drums`, `fx` ratios
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- `schema_version`: `"v0.1.18-stable"`
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- `timestamp`: ISO format timestamp
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Also updates `layer_selections.summary` with:
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- `auto_vocal_layers_enabled: False`
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- `manual_recording_roles: ['vocal_loop', 'vocal_build', 'vocal_peak', 'vocal_shot']`
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**Log markers added:**
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- `[P0_COHERENCE_METRICS]` for metrics summary
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**Status:** Code deployed, compilation successful. **Not validated** due to generation blocker.
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---
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### ✅ P1: Music Bus Coherence Hardening - IMPLEMENTED
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**Changes made to `reference_listener.py`:**
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1. **Added complementary role tracking** (lines 5511-5521):
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- `music_bus_secondary_justification`: Tracks why secondary pack is needed
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- `music_bus_primary_roles`: Set tracking for roles in primary pack
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- `MUSIC_ROLE_COMPLEMENTARY_PAIRS`: Defines valid complementary pairs
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2. **Enhanced `_calculate_bus_aware_pack_bonus`** with:
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- Primary pack roles tracked when candidate matches dominant
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- Secondary pack only allowed with functional justification
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- Third pack rejection with severe penalty (0.1x)
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- Complementarity check: secondary role must complement primary roles
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**Justification types:**
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- `"complements_<roles>"`: When secondary serves complementary function
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- `"primary_contrast"`: When no primary roles yet established
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- `"no_clear_function"`: Rejected when not complementary
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**Log markers added:**
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- `[P1_MUSIC_SECONDARY]` when secondary pack established
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- `[P1_MUSIC_REJECT]` when pack rejected for no function
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- `[P1_MUSIC_THIRD_PACK]` when third pack rejected
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**Status:** Code deployed, compilation successful. **Not validated** due to generation blocker.
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---
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### ✅ P2: Instrumental-Only Mode - IMPLEMENTED
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**Changes made:**
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1. **In `server.py` P0 section:**
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- `manual_vocals_enabled: True`
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- `auto_vocal_layers_enabled: False`
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- `manual_recording_roles` defined
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2. **Codex previously applied:**
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- `MANUAL_RECORDING_ROLES` in `reference_listener.py`
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- Filtering of vocal roles before/after selection
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- `auto_vocal_layers_enabled=false` in plan
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**Status:** Code deployed. **Not validated** with fresh generation.
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---
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### ⚠️ P3: MIDI Hook and Piano Truth - PARTIALLY ADDRESSED
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**Current state:**
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- `_calculate_piano_presence()` function exists and handles hybrid piano detection
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- Hook materialization logic exists in `materialize_midi_hook()`
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- Previous sessions show `materialized: False` consistently
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**Root cause identified:**
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The hook requires `generator._hook_materialized` to be set, which only happens when `materialized.get("status") == "created"`. Previous sessions show the hook is planned but not materialized.
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**Not addressed in this sprint:**
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- Deep fix of hook materialization pipeline
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- Piano family selection for MIDI hook
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**Status:** Existing code reviewed, no new changes made. Issue persists.
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---
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### ✅ P4: Vocal Leaks Cleanup - VERIFIED
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**Codex applied changes:**
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- `reference_listener.py`: Vocals filtered before/after selection
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- `server.py`: Audio fallback no longer materializes vocals
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- `test_piano_forward.py`: Tests for vocal policy
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**Verified in code:**
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- `MANUAL_RECORDING_ROLES` defined
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- Vocal roles excluded from auto-selection
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**Status:** Codex implementation verified. No additional changes needed.
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---
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## Session Analysis (Pre-Implementation)
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### Best Available Session: `afdda4821883`
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| Metric | Value | Target | Status |
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|--------|-------|--------|--------|
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| **coherence_score** | 6.1 | >= 6.5 | ❌ FAIL (-0.4) |
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| **coherence_verdict** | MIXED | OK/STRONG | ❌ FAIL |
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| **generation_mode** | None | library-first-hybrid | ❌ FAIL |
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| **library_first_mode** | None | true | ❌ FAIL |
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| **coherence_metrics** | Not present | Required | ❌ FAIL |
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| **auto_vocal_layers_enabled** | None | false | ❌ FAIL |
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| **audio_layers** | 0 | > 0 | ❌ FAIL |
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| **mandatory_midi_hook.materialized** | False | true | ❌ FAIL |
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| **vocal_layers** | 0 | 0 | ✅ PASS |
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**Analysis:**
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- Session is pre-P0 implementation (no coherence_metrics section)
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- Coherence score 6.1 is close but below 6.5 threshold
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- No audio_layers suggests materialization issues
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- Hook not materialized
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- No vocal layers confirms instrumental-only working
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---
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## Blockers and Issues
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### Primary Blocker: Generation Pipeline Stuck
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**Symptom:** Generation job `5b6a3df6e04a` stuck at 10% progress, stage `generating_config`.
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**Logs show:**
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- Multiple "Parameter not found" errors from `abletonmcp_init.py`
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- Error in `_set_device_parameter` (line 1966)
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**Impact:** Cannot validate P0-P4 implementation with fresh session.
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### Secondary Issues
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1. **generation_mode not being set to library-first-hybrid**
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- Current logic at line 8492: only sets hybrid if hook is materialized
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- Chicken-egg problem: hook needs generation to complete
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2. **MIDI hook materialization failing consistently**
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- Previous 5 sessions all show `materialized: False`
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- Need deeper investigation of hook pipeline
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3. **audio_layers count is 0 in best session**
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- Suggests materialization failing silently
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- Or audio fallback not being triggered
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---
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## Recommendations for Next Sprint (v0.1.19)
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### Critical Fixes Needed
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1. **Fix Generation Pipeline Stalling**
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- Debug "Parameter not found" error in `_set_device_parameter`
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- Add timeout and recovery to generation stages
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- Ensure config generation doesn't block indefinitely
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2. **Decouple generation_mode from hook materialization**
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- Set `generation_mode: library-first-hybrid` when reference provided
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- Validate hook separately, don't block mode assignment
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3. **Fix Audio Fallback Materialization**
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- Investigate why audio_layers is 0
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- Ensure library-first mode actually materializes audio
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- Add validation that audio tracks are created
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4. **MIDI Hook Materialization**
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- Debug why hook consistently shows `materialized: False`
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- Ensure `mark_hook_materialized()` is called correctly
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- Verify track creation in Ableton
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5. **Validate P0 Schema**
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- Once generation works, verify coherence_metrics structure
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- Ensure all required fields present:
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- family_adherence_rate
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- pack_coherence (overall, music, drums, fx)
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- manual_vocals_enabled
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- auto_vocal_layers_enabled
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---
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## Threshold Compliance (Current Best)
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| Threshold | Required | Best Session (afdda4821883) | Gap |
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|-----------|----------|------------------------------|-----|
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| coherence_score | >= 6.5 | 6.1 | -0.4 |
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| generation_mode | library-first-hybrid | None | N/A |
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| mandatory_midi_hook.materialized | true | False | N/A |
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| pack_coherence.music | >= 0.65 | Not present | N/A |
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| pack_coherence.overall | >= 0.50 | Not present | N/A |
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| family_adherence_rate | >= 0.60 | Not present | N/A |
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| auto_vocal_layers_enabled | false | None | N/A |
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**Compliance: 0/7 thresholds met**
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---
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## Code Locations
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### P0 Implementation
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- `server.py` lines ~9200-9230: Coherence metrics schema
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### P1 Implementation
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- `reference_listener.py` lines ~5511-5521: Secondary pack tracking
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- `reference_listener.py` lines ~5417-5480: Bus-aware bonus with justification
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### P2/P4 Implementation (Codex)
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- `reference_listener.py`: MANUAL_RECORDING_ROLES
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- `server.py`: Audio fallback vocal exclusion
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### P3 Existing Code
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- `server.py` line 773: `_calculate_piano_presence()`
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- `server.py` line 4743: `materialize_midi_hook()`
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---
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## Conclusion
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**Sprint v0.1.18 is NOT COMPLETE.**
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While P0-P4 code implementations were deployed and compile successfully, the sprint cannot be closed because:
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1. **Generation pipeline is blocked** - Cannot create fresh session to validate changes
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2. **No session meets thresholds** - Best available (afdda4821883) scores 6.1/6.5
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3. **Core functionality not working** - Hook materialization, audio fallback both failing
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### What Works
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- ✅ Code compiles without errors
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- ✅ P0 schema code deployed
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- ✅ P1 music bus hardening deployed
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- ✅ P2 instrumental-only flags set
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- ✅ P4 vocal manual-only policy in place
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### What Doesn't Work
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- ❌ Generation stalls at 10%
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- ❌ Hook not materializing
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- ❌ Audio layers not created
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- ❌ Cannot validate metrics
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### Required for Closure
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A fresh generation that:
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1. Completes without stalling
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2. Creates audio layers (>0)
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3. Materializes MIDI hook
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4. Shows coherence_score >= 6.5
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5. Has generation_mode = library-first-hybrid
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6. Contains coherence_metrics section with all required fields
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---
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**Report Generated:** 2026-04-01
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**Code Changes:** Deployed, compiled, not validated
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**Next Action Required:** Fix generation pipeline, then re-run validation
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