Sync: Complete project state with all MEGA SPRINT V1-V3 features and Codex stubs
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renato97
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docs/SPRINT_v0.1.19_VALIDATION_REPORT.md
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docs/SPRINT_v0.1.19_VALIDATION_REPORT.md
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# Sprint v0.1.19 Validation Report
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**Date:** 2026-04-01
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**Status:** ⚠️ **CODE DEPLOYED - VALIDATION BLOCKED**
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**Report Author:** OpenCode Agent (Kimi K2)
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**Baseline Session:** `2f53f3574d2d` (pre-implementation)
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**Attempted Validation Job:** `cff063342422` (did not complete)
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---
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## Executive Summary
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Sprint v0.1.19 "Coherence First, Anti-Loop, Creativity Recovery" has **code implementations deployed** for P0-P5, but **validation is blocked** by a systemic generation pipeline issue.
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### Implementation vs Validation Status
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| Area | Implementation | Validation | Status |
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|------|---------------|------------|--------|
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| P0: Codex fixes verified | ✅ | ✅ | Complete |
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| P1: Anti-loop metrics | ✅ | ❌ | Code only |
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| P2: Section creativity | ✅ | ❌ | Code only |
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| P3: Music bus coherence | ✅ | ❌ | Code only |
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| P4: Instrumental hybrid | ✅ | ❌ | Code only |
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| P5: No auto vocals | ✅ | ✅ | Codex verified |
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| P6: End-to-end validation | ❌ | ❌ | **BLOCKED** |
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### Critical Blocker
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The generation pipeline consistently stalls at 10% progress during `generating_config` stage. Jobs `5b6a3df6e04a` and `cff063342422` both failed to complete, preventing validation of any code changes.
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---
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## 2. Claims Verified Against Code
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### ✅ P0: Codex Fixes Verified
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**Changes confirmed in `server.py`:**
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1. **`_resolve_generation_mode()` (line 1098):**
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- Resolves mode based on pipeline intention, not just hook result
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- Returns `library-first-hybrid` if phrase_plan, primary_harmonic_family, or preferred_secondary_families exist
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- Prevents chicken-egg problem where mode requires hook which requires mode
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2. **`_build_stable_coherence_metrics()` (line 1137):**
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- Reads from real manifest shapes: `layer_selections.summary`, `pack_coherence`
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- Extracts family_adherence from harmonic layers
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- Builds stable schema with:
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- `family_adherence_rate`
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- `harmonic_layers_evaluated`
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- `manual_vocals_enabled: True`
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- `auto_vocal_layers_enabled: False`
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- `pack_coherence` {overall, music, drums, fx}
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- `schema_version: "v0.1.18-stable"`
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3. **`datetime` import present (line 26):**
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- Required for schema timestamps
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- Previously missing causing runtime error
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### ✅ P1: Anti-Loop Metrics and Guardrails - IMPLEMENTED
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**New function `_calculate_repetition_metrics()` (added after line 1120):**
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```python
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def _calculate_repetition_metrics(manifest: Dict[str, Any]) -> Dict[str, Any]
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```
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**Metrics calculated:**
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- `identical_section_signatures`: Count of sections with identical musical signature
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- `max_sections_with_same_signature`: Maximum duplicates
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- `harmonic_loop_reuse_ratio`: 0.0-1.0 ratio of loop repetition
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- `music_source_reuse_ratio`: 0.0-1.0 ratio of same source reuse
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- `verdict`: "repetitive", "varied", or "mixed"
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- `issues`: List of specific problems detected
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**Guardrails added to `_apply_clip_consolidation()`:**
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- Music/harmonic roles (`chords`, `synth_loop`, `pad`, `lead`, etc.) NOT aggressively consolidated
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- If music role has `section_variants`, preserved as one-shots
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- FX roles maintain precise timing (unchanged)
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- Drums anchor roles tolerate more consolidation
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**Guardrails added to `_consolidate_positions_to_loops()`:**
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- New parameters: `role`, `has_section_variants`
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- If `has_section_variants` and music role: return as individual one-shots
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- Log: `[P1_ANTI_FLATTEN] Role 'X' has section_variants - preserving as N one-shots`
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**Log markers added:**
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- `[P1_REPETITION_METRICS]` - Summary of repetition analysis
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- `[P1_REPETITION_ISSUE]` - Specific problems detected
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- `[P1_ANTI_FLATTEN]` - Anti-flattening actions taken
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**Integration point:**
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- Called in manifest closure (before coherence_metrics)
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- Results stored in `manifest["repetition_metrics"]`
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### ✅ P2: Section Creativity Verified in Code
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**PhrasePlan class (line 3666 in `song_generator.py`):**
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Verified mechanisms for section variation:
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- `MUTATION_MAP`: Different mutations per section (intro->sparse, build->tension, drop->full, break->response, outro->fade)
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- `PHRASE_KIND_MAP`: Different phrase types per section
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- `PHRASE_ROLES`: Different roles per section (intro: pluck/pad, build: pluck/synth, drop: pluck/lead/synth, break: pad/pluck, outro: pad/pluck)
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- `_generate_phrases()`: Creates phrases with section-specific mutations
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- `_determine_family()`: Uses locked family for coherence but varies density/energy
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**SectionVariationManager class (line 5643 in `song_generator.py`):**
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Verified mechanisms:
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- `SECTION_DENSITY_PROFILES`: Different density/complexity per section type
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- `VARIATION_ROLES`: Roles that change per section (perc_loop, top_loop, atmos_fx, etc.)
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- `ANCHOR_ROLES`: Roles that stay consistent (kick, clap, hat, sub_bass, bass)
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- `should_use_variation()`: Determines if role should vary
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- `score_sample_for_section()`: Scores samples based on section needs
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**Code analysis conclusion:** The infrastructure for section creativity exists. The mechanisms are designed to produce real variation.
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### ✅ P3: Music Bus Coherence Without Flattening
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**Already implemented in P1 Sprint v0.1.18 (verified at line 5560):**
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```python
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music_bus_secondary_pack: Optional[str] = None
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music_bus_secondary_justification: Optional[str] = None
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music_bus_primary_roles: set = set()
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MUSIC_ROLE_COMPLEMENTARY_PAIRS = {
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'pad': ['lead', 'pluck', 'arp', 'stab'],
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'lead': ['pad', 'chords', 'drone'],
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'pluck': ['pad', 'chords', 'drone'],
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'chords': ['lead', 'pluck', 'arp'],
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'arp': ['pad', 'chords', 'drone'],
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'drone': ['lead', 'pluck', 'arp'],
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'synth_loop': ['pad', 'drone'],
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}
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```
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**Justification logic in `_calculate_bus_aware_pack_bonus()`:**
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- Secondary pack only allowed if complementary to primary roles
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- Third pack rejected with severe penalty (0.1x)
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- Logs: `[P1_MUSIC_SECONDARY]`, `[P1_MUSIC_REJECT]`, `[P1_MUSIC_THIRD_PACK]`
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**Status:** Code present from previous sprint. Not modified in v0.1.19 as P0 verification confirmed it's working.
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### ✅ P4: Instrumental Hybrid - Code Review
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**Existing infrastructure:**
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- `_calculate_piano_presence()` (line 773): Detects piano/keys/rhodes
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- `materialize_midi_hook()` (line 4743): Creates MIDI hook track
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- `_resolve_generation_mode()`: Sets `library-first-hybrid` when reference provided
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**Not addressed in this sprint:**
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- Hook materialization still failing (see baseline session analysis)
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- Audio layers not created in previous sessions
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- Deep fix of materialization pipeline not done
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### ✅ P5: Instrumental-Only Strict Mode
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**Verified in code:**
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- `MANUAL_RECORDING_ROLES` defined (Codex applied)
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- `auto_vocal_layers_enabled: False` set in coherence_metrics
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- Vocal roles excluded from auto-selection
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- No vocal layers in baseline sessions
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**Status:** Maintained, no regression.
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---
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## 3. Fresh Session Validation
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### Attempted Generation
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**Job ID:** `cff063342422`
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**Parameters:**
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- genre: reggaeton
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- style: perreo duro vieja escuela tipo safaera
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- bpm: 95.0
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- key: Am
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- reference_path: libreria\reggaeton\ejemplo.mp3
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- structure: standard
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**Status:** FAILED TO COMPLETE
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**Progress:** 10% (stage: generating_config)
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**Duration:** Stalled after ~60 seconds
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### Previous Attempt
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**Job ID:** `5b6a3df6e04a`
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**Status:** Same failure mode - stalled at 10%
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### Root Cause Analysis
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The generation pipeline has a **systemic blocker** preventing completion. Without successful generation, **no code changes can be validated**.
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---
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## 4. Manifest Truth (Baseline Session)
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### Session: `2f53f3574d2d` (Pre-Implementation)
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**Source:** `C:\Users\ren\.abletonmcp_ai\generation_manifests.json`
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| Metric | Value | Target | Gap |
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|--------|-------|--------|-----|
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| coherence_score | 5.4 | >= 6.5 | -1.1 |
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| generation_mode | None | library-first-hybrid | N/A |
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| library_first_mode | None | true | N/A |
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| coherence_metrics | False | Required | N/A |
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| layer_selections.total_layers | 0 | > 0 | N/A |
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| piano_layer_count | 0 | >= 1 | N/A |
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| mandatory_midi_hook.materialized | False | true | N/A |
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| variant_summary.total_layers_with_variants | 5 | >= 3 | ✅ |
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| variant_summary.total_variants | 30 | >= 6 | ✅ |
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**Vocal Analysis:**
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- audio_layers: 0 (no data)
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- vocal_layers: 0 (instrumental-only maintained)
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---
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## 5. Coherence Metrics
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### Code Implementation
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**Function:** `_build_stable_coherence_metrics()` (line 1137)
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**Expected output when generation works:**
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```json
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{
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"family_adherence_rate": float,
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"harmonic_layers_evaluated": int,
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"manual_vocals_enabled": true,
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"auto_vocal_layers_enabled": false,
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"pack_coherence": {
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"overall": float,
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"music": float,
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"drums": float,
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"fx": float
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},
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"schema_version": "v0.1.18-stable",
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"timestamp": "ISO-format"
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}
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```
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**Status:** Code deployed. **Not validated** - no successful generation to extract from.
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---
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## 6. Repetition Metrics
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### Code Implementation
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**Function:** `_calculate_repetition_metrics()` (added after line 1120)
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**Expected output when generation works:**
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```json
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{
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"identical_section_signatures": int,
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"max_sections_with_same_signature": int,
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"harmonic_loop_reuse_ratio": float,
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"music_source_reuse_ratio": float,
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"verdict": "repetitive|varied|mixed",
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"issues": [list of strings],
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"schema_version": "v0.1.19-p1"
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}
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```
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**Status:** Code deployed. **Not validated** - no successful generation to extract from.
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---
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## 7. Hybrid Truth (MIDI + Piano + Library)
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### Current State (from baseline)
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- `mandatory_midi_hook.materialized`: False
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- `piano_presence.piano_layer_count`: 0
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- `generation_mode`: None
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- `audio_layers`: 0
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### Infrastructure in Code
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- `_resolve_generation_mode()`: Sets hybrid mode when reference provided
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- `materialize_midi_hook()`: Creates MIDI track
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- `_calculate_piano_presence()`: Detects piano/keys
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**Status:** Infrastructure present. Materialization failing consistently.
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---
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## 8. Instrumental-Only Compliance
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### Verified in Baseline Session
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- `auto_vocal_layers_enabled`: None (pre-implementation session)
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- `audio_layers`: 0
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- `vocal_layers`: 0
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### Code Verification
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- `manual_vocals_enabled: True` in coherence_metrics
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- `auto_vocal_layers_enabled: False` in coherence_metrics
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- Vocal roles excluded from auto-selection (Codex applied)
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**Status:** ✅ COMPLIANT
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---
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## 9. Open Issues
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### Critical: Generation Pipeline Blocked
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**Problem:** All generation jobs stall at 10% progress during `generating_config` stage.
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**Evidence:**
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- Job `5b6a3df6e04a`: Stalled at 10%
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- Job `cff063342422`: Stalled at 10%
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**Impact:** Cannot validate any code changes.
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**Hypothesis:** The hardening from P1 (anti-consolidation guardrails) or previous sprints may have introduced a deadlock or infinite loop during config generation.
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**Next Steps Required:**
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1. Debug generation pipeline stalling
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2. Add timeout/recovery mechanisms
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3. Test with simplified config
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### Secondary: Hook Materialization
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**Problem:** `mandatory_midi_hook.materialized` consistently False in all sessions.
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**Impact:** Cannot achieve `library-first-hybrid` mode reliably.
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### Secondary: Audio Layers
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**Problem:** `audio_layers` count is 0 in baseline session.
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**Impact:** Library-first mode not actually materializing audio.
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---
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## 10. Verdict
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### Sprint v0.1.19 Status: **NOT CLOSED**
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### What Was Accomplished
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✅ **P0 Verified:** Codex fixes are in place and correct
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✅ **P1 Implemented:** Anti-loop metrics and guardrails deployed
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✅ **P2 Verified:** Section creativity infrastructure present
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✅ **P3 Verified:** Music bus coherence code present
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✅ **P5 Maintained:** No auto vocals
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⚠️ **P4 Pending:** Hybrid materialization still failing
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❌ **P6 Blocked:** Cannot validate end-to-end
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### Threshold Compliance
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| Threshold | Required | Status |
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|-----------|----------|--------|
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| coherence_score >= 6.5 | ❌ UNKNOWN | Cannot test |
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| generation_mode = library-first-hybrid | ❌ UNKNOWN | Cannot test |
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| mandatory_midi_hook.materialized = true | ❌ UNKNOWN | Cannot test |
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| auto_vocal_layers_enabled = false | ❌ UNKNOWN | Cannot test |
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| layer_selections.summary.total_layers > 0 | ❌ UNKNOWN | Cannot test |
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| piano_presence.piano_layer_count >= 1 | ❌ UNKNOWN | Cannot test |
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| variant_summary.total_layers_with_variants >= 3 | ❌ UNKNOWN | Cannot test |
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| variant_summary.total_variants >= 6 | ❌ UNKNOWN | Cannot test |
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| repetition_metrics.verdict != repetitive | ❌ UNKNOWN | Cannot test |
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### Code Changes Summary
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**Files modified:**
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- `AbletonMCP_AI/AbletonMCP_AI/MCP_Server/server.py`
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- Added `_calculate_repetition_metrics()` (lines ~1121-1215)
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- Modified `_consolidate_positions_to_loops()` with anti-flattening params
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- Modified `_apply_clip_consolidation()` with role-based rules
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- Added P1 metrics call in manifest closure (line ~9310)
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**Tests to verify (per handoff):**
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- `test_piano_forward.py` - Passes (Codex verified)
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- `test_selection_coherence.py` - Passes (Codex verified)
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### Recommendation
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**Sprint v0.1.19 cannot be closed** until the generation pipeline is fixed.
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**Immediate next steps for v0.1.20:**
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1. **Fix generation pipeline stalling** - Debug why jobs hang at 10%
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2. **Validate P1 metrics** - Once generation works, verify repetition_metrics appear in manifest
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3. **Validate anti-flattening** - Verify music layers preserve section_variants
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4. **Complete P6 validation** - Run full threshold verification
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**Do not declare success** until a session is generated with:
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- Real `session_id` in `generation_manifests.json`
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- `coherence_score >= 6.5`
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- `repetition_metrics.verdict != "repetitive"`
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- All other thresholds from handoff section 8
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---
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**Report Generated:** 2026-04-01
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**Code Status:** Deployed and compiling
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**Validation Status:** Blocked by generation pipeline
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**Ready for Next Sprint:** No - generation must be fixed first
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Reference in New Issue
Block a user