> For the complete documentation index, see [llms.txt](https://ai-os-and-trend-finder.gitbook.io/ai-os-and-trend-finder-docs/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://ai-os-and-trend-finder.gitbook.io/ai-os-and-trend-finder-docs/.spec_system/archive/sessions/phase36-session06-adaptive-music-engine-expansion/implementation_summary.md). # Implementation Summary **Session ID**: `phase36-session06-adaptive-music-engine-expansion` **Completed**: 2026-06-28 **Duration**: 1.5 hours *** ## Overview Session 06 added the AI Rogue adaptive-audio runtime contract needed before dedicated stinger assets are generated. The work added typed adaptive request IDs, cooldowns, transient music and theme ambience ducking, renderer-side request derivation, focused regression coverage, browser proof, and durable documentation. It preserved the existing local-only, presentation-only audio boundary and did not add assets, dependencies, schema changes, remote loading, or simulation behavior changes. *** ## Deliverables ### Files Created | File | Purpose | Lines | | ------------------------------------------------------------------------------------------------ | ---------------------------------------------------- | ----- | | `.spec_system/specs/phase36-session06-adaptive-music-engine-expansion/spec.md` | Session specification and contract. | \~382 | | `.spec_system/specs/phase36-session06-adaptive-music-engine-expansion/tasks.md` | Session task checklist and completion tracking. | \~75 | | `.spec_system/specs/phase36-session06-adaptive-music-engine-expansion/implementation-notes.md` | Implementation decisions, evidence, and command log. | \~726 | | `.spec_system/specs/phase36-session06-adaptive-music-engine-expansion/code-review.md` | Code review and repair report. | \~75 | | `.spec_system/specs/phase36-session06-adaptive-music-engine-expansion/security-compliance.md` | Security and GDPR review report. | \~86 | | `.spec_system/specs/phase36-session06-adaptive-music-engine-expansion/validation.md` | Validation report and evidence ledger. | \~303 | | `.spec_system/specs/phase36-session06-adaptive-music-engine-expansion/IMPLEMENTATION_SUMMARY.md` | Closeout summary for updateprd. | \~114 | ### Files Modified | File | Changes | | -------------------------------------------------------------------------- | ---------------------------------------------------------------------------------------------------------------------- | | `src/extensions/ai-rogue/runtime/audio.ts` | Added adaptive request types, profile map, cooldown tracking, transient ducking, fallback no-op, and disposal cleanup. | | `src/extensions/ai-rogue/runtime/renderer-audio-adapter.ts` | Derived adaptive requests from simulation events, health pressure, boss visibility, and terminal transitions. | | `src/extensions/ai-rogue/runtime/renderer.ts` | Routed combat start through the adaptive request path. | | `src/extensions/ai-rogue/runtime/__tests__/audio.test.ts` | Added focused engine coverage for adaptive requests, cooldowns, ducking, preferences, fallback, and cleanup. | | `src/extensions/ai-rogue/runtime/__tests__/renderer-audio-adapter.test.ts` | Added adapter coverage for all seven adaptive moments and duplicate prevention. | | `tests/e2e/ai-rogue-runtime.spec.ts` | Extended browser proof for adaptive routing, failed-request capture, silent fallback, and product-facing UI checks. | | `docs/extensions/ai-rogue/game-feel.md` | Documented the adaptive request, cooldown, and ducking contract plus Session 07 handoff. | | `docs/extensions/ai-rogue/README.md` | Updated the current AI Rogue audio summary for event-based ducking. | | `.spec_system/PRD/phase_36/session_06_adaptive_music_engine_expansion.md` | Recorded implementation contract, validation evidence, completion date, and checked success criteria. | | `.spec_system/PRD/phase_36/PRD_phase_36.md` | Marked Session 06 complete and updated Phase 36 progress to 6/8. | | `.spec_system/state.json` | Added Session 06 to completed sessions, appended completion history, and cleared current session. | | `README.md` | Updated the version line to 0.5.62. | | `docs/CHANGELOG.md` | Added the Phase 36 Session 06 closeout entry. | | `package.json` | Bumped package version from 0.5.61 to 0.5.62. | *** ## Technical Decisions 1. **Extend the existing engine**: Adaptive audio lives in `AiRogueAudioEngine` because that object already owns music, ambience, SFX, mute, volume, autoplay, and fallback behavior. 2. **Keep derivation in the renderer adapter**: Runtime events and previous/current snapshots are translated into presentation requests outside deterministic simulation modules. 3. **Use provisional cue mapping**: Session 06 reuses committed cue IDs so Session 07 can swap in dedicated stinger assets behind the same request IDs. 4. **Require terminal transition context**: Victory and defeat adaptive ducking require a previous snapshot so terminal requests do not fire without before/after evidence. *** ## Test Results | Metric | Value | | -------------------------------- | ------------- | | Full Vitest | 4403 passed | | Focused audio/adapter tests | 35 passed | | Focused simulation tests | 26 passed | | Focused Playwright browser proof | 2 passed | | Coverage | Not collected | *** ## Lessons Learned 1. Adaptive audio can be added safely as a presentation-only overlay when the engine owns ducking and the adapter owns event derivation. 2. Terminal transition audio needs explicit previous-state context; optional snapshot checks can accidentally behave like transitions. 3. Browser proof remains useful for audio route validation even when the agent environment cannot physically monitor sound output. *** ## Future Considerations Items for future sessions: 1. Session 07 should generate and wire dedicated adaptive stinger assets behind the same request IDs. 2. Session 08 should rerun the full audio validation matrix with human acoustic listening for volume, fatigue, and cue clarity. 3. Keep adaptive audio out of persistence and simulation state unless a later product requirement explicitly needs saved audio preferences. *** ## Session Statistics * **Tasks**: 19 completed * **Files Created**: 7 * **Files Modified**: 14 * **Tests Added**: focused engine, adapter, and browser proof coverage * **Blockers**: 0 resolved --- # Agent Instructions This documentation is published with GitBook. GitBook is the documentation platform designed so that both humans and AI agents can read, navigate, and reason over technical content effectively. Learn more at gitbook.com. ## Querying This Documentation If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question. 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