> 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/phase34-session04-renderer-lifecycle-and-robustness/implementation_summary.md). # Implementation Summary **Session ID**: `phase34-session04-renderer-lifecycle-and-robustness` **Completed**: 2026-06-26 **Duration**: 1 hour *** ## Overview Completed Phase 34 Session 04 by hardening AI Rogue renderer lifecycle and browser fallback behavior without changing gameplay rules. Inactive transient `feedback:*` sprites are destroyed instead of retained indefinitely, resize observer and window resize events are coalesced, reduced-motion probing is defensive across browser API variants, and setup/audio fallback paths have focused coverage. *** ## Deliverables ### Files Created | File | Purpose | Lines | | -------------------------------------------------------------------------------------------------- | ------------------------------------- | ----- | | `.spec_system/specs/phase34-session04-renderer-lifecycle-and-robustness/spec.md` | Session scope and acceptance contract | 342 | | `.spec_system/specs/phase34-session04-renderer-lifecycle-and-robustness/tasks.md` | Completed 20-task checklist | 76 | | `.spec_system/specs/phase34-session04-renderer-lifecycle-and-robustness/implementation-notes.md` | Task-by-task implementation evidence | 699 | | `.spec_system/specs/phase34-session04-renderer-lifecycle-and-robustness/code-review.md` | Review gate report | 95 | | `.spec_system/specs/phase34-session04-renderer-lifecycle-and-robustness/security-compliance.md` | Security and GDPR assessment | 81 | | `.spec_system/specs/phase34-session04-renderer-lifecycle-and-robustness/validation.md` | Validation report | 371 | | `.spec_system/specs/phase34-session04-renderer-lifecycle-and-robustness/IMPLEMENTATION_SUMMARY.md` | Update PRD closeout summary | \~90 | | `src/extensions/ai-rogue/runtime/__tests__/audio.test.ts` | Web Audio fallback coverage | 190 | ### Files Modified | File | Changes | | ---------------------------------------------------------------------- | --------------------------------------------------------------------------------------- | | `.spec_system/state.json` | Marked Session 04 complete, cleared current session, and appended history. | | `.spec_system/PRD/phase_34/PRD_phase_34.md` | Updated progress to 4/8, marked Session 04 complete, and added notes. | | `package.json` | Incremented patch version from 0.5.35 to 0.5.36. | | `README.md` | Synced visible version to 0.5.36. | | `docs/CHANGELOG.md` | Added Phase 34 Session 04 closeout notes. | | `src/extensions/ai-rogue/runtime/renderer.ts` | Destroyed inactive transient feedback sprites, coalesced resize work, hardened cleanup. | | `src/extensions/ai-rogue/runtime/__tests__/renderer-lifecycle.test.ts` | Covered sprite cleanup, resize coalescing, and reduced-motion fallbacks. | | `src/extensions/ai-rogue/__tests__/runtime-canvas.test.tsx` | Covered rejected runtime mount and product-facing unavailable/error states. | *** ## Technical Decisions 1. **Descriptor-family cleanup**: Destroy transient feedback sprites when they leave the active render model while keeping persistent sprites reusable. 2. **Coalesced external resize**: Route browser resize storms through a pending animation frame, but keep explicit controller resize immediate for callers. 3. **Defensive browser probing**: Treat media query and Web Audio APIs as optional and failure-prone so unsupported surfaces degrade without throwing. *** ## Test Results | Metric | Value | | --------------------------- | ------------- | | Focused Vitest | 22 passed | | AI Rogue Vitest | 289 passed | | Full Vitest | 4320 passed | | AI Rogue runtime Playwright | 9 passed | | Typecheck | PASS | | Lint | PASS | | Format check | PASS | | Coverage | Not collected | *** ## Lessons Learned 1. Transient render descriptors need explicit ownership rules separate from persistent map, entity, HUD, and overlay sprites. 2. Browser capability checks should mirror the most defensive local helper pattern instead of assuming modern DOM APIs are present and well-behaved. *** ## Future Considerations Items for future sessions: 1. Session 05 should preserve renderer cleanup behavior while narrowing runtime API ownership around simulation-owned transitions. 2. Session 07 should build on the coalesced resize path when addressing hot-loop projection work and audio documentation drift. *** ## Session Statistics * **Tasks**: 20 completed * **Files Created**: 8 * **Files Modified**: 8 * **Tests Added**: Focused renderer lifecycle, runtime bridge, and audio coverage * **Blockers**: 4 audit findings or coverage gaps addressed --- # Agent Instructions This documentation is published with GitBook. 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