> 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/phase37-session04-g3-theme-decals/implementation-notes.md).

# Implementation Notes

**Session ID**: `phase37-session04-g3-theme-decals` **Started**: 2026-06-29 04:16 **Last Updated**: 2026-06-29 06:18

***

## Session Progress

| Metric              | Value   |
| ------------------- | ------- |
| Tasks Completed     | 22 / 22 |
| Estimated Remaining | 0 hours |
| Blockers            | 0       |

***

## Environment Verification

* [x] Spec system prerequisites confirmed with `.spec_system/scripts/check-prereqs.sh --json --env`.
* [x] Required tools confirmed with `.spec_system/scripts/check-prereqs.sh --json --tools "python3,bun,bunx"`.
* [x] Directory structure ready for `phase37-session04-g3-theme-decals`.
* [x] Database prerequisites not applicable; this session is presentation-only and has no database scope.

***

## Candidate Review Ledger

This section tracks G3 accepted and rejected sector-theme crops. Runtime-facing entries must stay no-text-safe and avoid baked lock, stripe, pictogram, letter-like, number-like, punctuation-like, or misleading state/control semantics.

### Accepted G3 Candidates

* Cold Cache: `tile_g3_cold_cache_floor`, `tile_g3_cold_cache_wall`, `tile_g3_cold_cache_coolant`, `decal_g3_cold_cache_shards`.
* Corrupted Index: `tile_g3_corrupted_index_floor`, `tile_g3_corrupted_index_wall`, `tile_g3_corrupted_index_crack`, `decal_g3_corrupted_index_fragments`.
* Firewall: `tile_g3_firewall_floor`, `tile_g3_firewall_wall`, `tile_g3_firewall_vent`, `decal_g3_firewall_embers`.
* Model Vault: `tile_g3_model_vault_floor`, `tile_g3_model_vault_wall`, `tile_g3_model_vault_core`, `decal_g3_model_vault_crystals`.
* Kernel Core: `tile_g3_kernel_core_floor`, `tile_g3_kernel_core_wall`, `tile_g3_kernel_core_rib`, `decal_g3_kernel_core_sparks`.

### Rejected G3 Candidates

* `rejected_g3_cold_cache_stripes` - scanline-diagnostic risk.
* `rejected_g3_corrupted_index_stripes` - punctuation-like fragment risk.
* `rejected_g3_firewall_warning_stripes` - warning/control-state signage risk.
* `rejected_g3_model_vault_lock_panel` - baked lock-state pictogram risk.
* `rejected_g3_model_vault_barcode_columns` - barcode/text-like diagnostic risk.
* `rejected_g3_kernel_core_target_marker` - objective-target marker risk.

### No-Text-Safe Review

Runtime accepted crops must be abstract texture, atmosphere, surface, damage, or energy marks. Rejected candidates will include any crop that reads as baked text, a control label, a lock state, a numeric/symbolic UI state, a misleading enemy/objective marker, or a high-frequency stripe that harms tile readability.

***

## Manifest Decisions

* Added 20 accepted G3 gameplay crops and 6 rejected G3 crops to `crop-manifest.json`.
* Kept G3 gameplay-atlas-only; no UI atlas entries were added.
* Accepted entries use 16x16 target sizes to match runtime tile/decal contracts.
* Rejected entries document no-text-safe and semantic-risk reasons directly in the manifest.

***

## Validation Commands

Commands will be recorded as tasks execute:

* `python3 scripts/extensions/ai-rogue/pack-visual-assets.py` - PASS at T005: gameplay 234 frames, UI 115 frames, manifest 179 accepted / 23 rejected, preview 160,796 bytes.
* `python3 scripts/extensions/ai-rogue/pack-visual-assets.py` - PASS at T018: gameplay 234 frames, UI 115 frames, manifest 179 accepted / 23 rejected, preview 160,796 bytes.
* `bun run typecheck` - PASS at T006, T007, T009, T010, T011, T012, T016, and T018.
* `bash scripts/check-asset-sizes.sh` - PASS at T018.
* `bunx vitest run src/extensions/ai-rogue/runtime/__tests__/assets.test.ts src/extensions/ai-rogue/runtime/__tests__/theme-visuals.test.ts src/extensions/ai-rogue/runtime/__tests__/themes.test.ts src/extensions/ai-rogue/runtime/__tests__/world.test.ts src/extensions/ai-rogue/runtime/__tests__/render-model.test.ts src/extensions/ai-rogue/runtime/__tests__/biome-final.test.ts`
  * PASS at T019.
* `PLAYWRIGHT_REUSE_EXISTING_SERVER=true bunx playwright test tests/e2e/ai-rogue-runtime.spec.ts -g "AI Rogue desktop projects distinct G3 sector theme visuals in browser" --project=chromium`
  * PASS at T020.
* `PLAYWRIGHT_REUSE_EXISTING_SERVER=true bunx playwright test tests/e2e/ai-rogue-mobile.spec.ts -g "AI Rogue mobile keeps G3 theme decals readable with compact controls" --project=chromium`
  * PASS at T021.
* `bun run typecheck && bunx vitest run src/extensions/ai-rogue/runtime/__tests__/assets.test.ts src/extensions/ai-rogue/runtime/__tests__/theme-visuals.test.ts src/extensions/ai-rogue/runtime/__tests__/themes.test.ts src/extensions/ai-rogue/runtime/__tests__/world.test.ts src/extensions/ai-rogue/runtime/__tests__/render-model.test.ts src/extensions/ai-rogue/runtime/__tests__/biome-final.test.ts`
  * PASS after formatting at T022.
* `PLAYWRIGHT_REUSE_EXISTING_SERVER=true bunx playwright test tests/e2e/ai-rogue-runtime.spec.ts -g "AI Rogue desktop projects distinct G3 sector theme visuals in browser" --project=chromium && PLAYWRIGHT_REUSE_EXISTING_SERVER=true bunx playwright test tests/e2e/ai-rogue-mobile.spec.ts -g "AI Rogue mobile keeps G3 theme decals readable with compact controls" --project=chromium`
  * PASS after formatting at T022.
* ASCII, LF, trailing-whitespace, and `git diff --check` validation - PASS at T022.
* `bash scripts/check-asset-sizes.sh`
* Focused Vitest suites for assets, theme visuals, themes, world, render model, and biome/final behavior
* `bunx playwright test tests/e2e/ai-rogue-runtime.spec.ts`
* `bunx playwright test tests/e2e/ai-rogue-mobile.spec.ts`

***

## Browser Evidence

Desktop proof:

* PASS: `AI Rogue desktop projects distinct G3 sector theme visuals in browser` verifies Cold Cache, Corrupted Index, Kernel Core, Firewall, and Model Vault all project distinct G3 frame signatures, gameplay-atlas decals, in-bounds sprites, product-facing labels, and no route-visible G3 frame diagnostics.

Mobile proof:

* PASS: `AI Rogue mobile keeps G3 theme decals readable with compact controls` verifies all five themes have readable in-bounds reduced-motion G3 decals at mobile scale, compact controls remain usable, the move recovery path works, the canvas and controls do not overlap, and the document has no horizontal overflow or route-visible G3 frame diagnostics.

***

## Task Log

### 2026-06-29 - Session Start

**Environment verified**:

* [x] Prerequisites confirmed
* [x] Tools available
* [x] Directory structure ready
* [x] Database not applicable

***

### Task T001 - Verify G3 source, alpha derivative, manifest, atlases, preview, and packer prerequisites

**Started**: 2026-06-29 04:16 **Completed**: 2026-06-29 04:20 **Duration**: 4 minutes

**Notes**:

* Confirmed the G3 source sheet, alpha derivative, crop manifest, gameplay and UI atlas outputs, docs preview, and packer script are present before asset edits.
* Established the pre-G3 manifest baseline: 176 total manifest records, 159 accepted, 17 rejected, and 0 entries from `ai-rogue-sector-themes-source.png`.
* Established the pre-G3 atlas baseline: gameplay atlas has 214 frames at 512x212 and 87,737 bytes; UI atlas has 115 frames at 512x140 and 24,672 bytes.

**Files Changed**:

* `.spec_system/specs/phase37-session04-g3-theme-decals/implementation-notes.md` - Created implementation ledger and recorded T001 evidence.
* `.spec_system/specs/phase37-session04-g3-theme-decals/tasks.md` - Marked T001 complete and added progress summary.

**Verification**:

* Command/check: `ls -lh docs/ongoing-projects/generated/ai-rogue-visual-audio-assets/source/ai-rogue-sector-themes-source.png docs/ongoing-projects/generated/ai-rogue-visual-audio-assets/alpha/ai-rogue-sector-themes-alpha.png docs/ongoing-projects/generated/ai-rogue-visual-audio-assets/crop-manifest.json src/assets/ai-rogue/gameplay-atlas.png src/assets/ai-rogue/gameplay-atlas.json src/assets/ai-rogue/ui-atlas.png src/assets/ai-rogue/ui-atlas.json docs/extensions/ai-rogue/generated/ai-rogue-production-atlas-preview.png scripts/extensions/ai-rogue/pack-visual-assets.py`
  * Result: PASS - All required files exist.
  * Evidence: Source sheet 1.9M, alpha derivative 1.3M, manifest 85K, gameplay atlas PNG/JSON 86K each, UI atlas PNG 25K, UI atlas JSON 46K, docs preview 143K, packer script 9.0K.
* Command/check: `file docs/ongoing-projects/generated/ai-rogue-visual-audio-assets/source/ai-rogue-sector-themes-source.png docs/ongoing-projects/generated/ai-rogue-visual-audio-assets/alpha/ai-rogue-sector-themes-alpha.png src/assets/ai-rogue/gameplay-atlas.png src/assets/ai-rogue/ui-atlas.png docs/extensions/ai-rogue/generated/ai-rogue-production-atlas-preview.png`
  * Result: PASS - Image files are valid PNGs.
  * Evidence: G3 source is 1536x1024 RGB; alpha derivative is 1536x1024 RGBA; gameplay atlas is 512x212 RGBA; UI atlas is 512x140 RGBA; docs preview is 1072x812 RGBA.
* Command/check: `python3 - <<'PY' ... Image.open(path) ... PY`
  * Result: PASS - Pillow can open required image inputs and outputs.
  * Evidence: Dimensions and modes matched the `file` output for all checked images.
* Command/check: `jq '{total:(.frames|length), gameplay:([.frames[] | select(.atlas == "gameplay")]|length), ui:([.frames[] | select(.atlas == "ui")]|length), accepted:([.frames[] | select(.status == "accepted")]|length), rejected:([.frames[] | select(.status == "rejected")]|length), g3:([.frames[] | select(.source == "ai-rogue-sector-themes-source.png")]|length)}' docs/ongoing-projects/generated/ai-rogue-visual-audio-assets/crop-manifest.json`
  * Result: PASS - Manifest parses and baseline counts are known.
  * Evidence: 176 total records, 137 gameplay records, 39 UI records, 159 accepted, 17 rejected, 0 G3 entries.
* Command/check: `python3 scripts/extensions/ai-rogue/pack-visual-assets.py --help`
  * Result: PASS - Packer and Pillow dependency execute in this environment.
  * Evidence: Script completed with gameplay 214 frames, UI 115 frames, and manifest 159 accepted / 17 rejected.
* UI product-surface check: N/A - Verification-only setup task with no user-facing route changes.
* UI craft check: N/A - Verification-only setup task with no visual UI changes.

**BQC Fixes**: None.

***

### Task T002 - Create the G3 implementation ledger

**Started**: 2026-06-29 04:20 **Completed**: 2026-06-29 04:23 **Duration**: 3 minutes

**Notes**:

* Created the implementation ledger with dedicated candidate review, manifest decision, validation command, browser evidence, and no-text-safe review sections.
* Kept all ledger headings ASCII-only and aligned with the session evidence required by the implement workflow.

**Files Changed**:

* `.spec_system/specs/phase37-session04-g3-theme-decals/implementation-notes.md` - Added G3 ledger sections and T002 evidence.
* `.spec_system/specs/phase37-session04-g3-theme-decals/tasks.md` - Marked T002 complete and updated progress summary.

**Verification**:

* Command/check: `sed -n '1,140p' .spec_system/specs/phase37-session04-g3-theme-decals/implementation-notes.md`
  * Result: PASS - Ledger contains candidate review, manifest decisions, validation commands, browser evidence, and no-text-safe review sections.
  * Evidence: The created sections are present before task implementation continues.
* UI product-surface check: N/A - Ledger-only task with no user-facing route changes.
* UI craft check: N/A - Ledger-only task with no visual UI changes.

**BQC Fixes**: None.

***

### Task T003 - Baseline current theme, world, render, renderer, atlas, and browser behavior

**Started**: 2026-06-29 04:23 **Completed**: 2026-06-29 04:29 **Duration**: 6 minutes

**Notes**:

* Read current theme, world-generation, render-model, renderer-layer, asset contract, and browser scenario code before modifying assets or runtime logic.
* Baseline behavior: `themes.ts` owns sector IDs, pressure deltas, enemy tables, palette hints, and audio ambience routes; `world-generator.ts` currently uses generic tile frames; `render-model.ts` projects tile/fog/entity/feedback/HUD sprites; `renderer-layers.ts` uses depth-based background atmosphere.
* Confirmed focused baseline tests pass before G3 changes.
* The first Playwright attempt failed before test execution because port 5189 was already in use; rerunning with `PLAYWRIGHT_REUSE_EXISTING_SERVER=true` passed the desktop runtime canvas smoke.

**Files Changed**:

* `.spec_system/specs/phase37-session04-g3-theme-decals/implementation-notes.md` - Recorded baseline evidence.
* `.spec_system/specs/phase37-session04-g3-theme-decals/tasks.md` - Marked T003 complete and updated progress summary.

**Verification**:

* Command/check: `sed -n '1,260p' src/extensions/ai-rogue/runtime/themes.ts`
  * Result: PASS - Existing sector theme metadata, order, pressure, palette, and audio hints inspected.
  * Evidence: Five sector IDs are present with depth order cold-cache, corrupted-index, kernel-core, firewall, model-vault.
* Command/check: `sed -n '1,620p' src/extensions/ai-rogue/runtime/world-generator.ts`
  * Result: PASS - Existing generator reads theme pressure/density but uses generic tile frame arrays and fixed special-object frames.
  * Evidence: Floor, wall, doorway, exit, hazard, vault, shrine, and terminal frame assignments inspected.
* Command/check: `sed -n '1,760p' src/extensions/ai-rogue/runtime/render-model.ts`
  * Result: PASS - Existing render projection layers, sorting, alpha, high contrast, reveal marker, entity, feedback, and HUD behavior inspected.
  * Evidence: Current model has no sparse theme decal projection.
* Command/check: `sed -n '1,220p' src/extensions/ai-rogue/runtime/renderer-layers.ts`
  * Result: PASS - Existing background atmosphere is depth-based and preserves reduced-motion scanline behavior.
  * Evidence: `drawBackground` uses `depthAtmosphere(depth)` and `resolveLayerPresentation({ reducedMotion })`.
* Command/check: `bunx vitest run src/extensions/ai-rogue/runtime/__tests__/themes.test.ts src/extensions/ai-rogue/runtime/__tests__/world.test.ts src/extensions/ai-rogue/runtime/__tests__/render-model.test.ts src/extensions/ai-rogue/runtime/__tests__/assets.test.ts`
  * Result: PASS - Focused baseline unit suites passed.
  * Evidence: 4 test files passed, 43 tests passed.
* Command/check: `PLAYWRIGHT_REUSE_EXISTING_SERVER=true bunx playwright test tests/e2e/ai-rogue-runtime.spec.ts -g "AI Rogue Play mounts a nonblank PixiJS runtime canvas" --project=chromium`
  * Result: PASS - Browser baseline renders the AI Rogue Play canvas.
  * Evidence: 1 Playwright test passed in Chromium after reusing the existing local server.
* UI product-surface check: PASS - The baseline browser test asserts the Play route leads with product-facing "How to play" content and mounts the runtime bridge/canvas without route-visible frame diagnostics.
* UI craft check: PASS - Baseline desktop route renders a painted nonblank PixiJS runtime canvas at the configured desktop viewport.

**BQC Fixes**: None.

***

### Task T004 - Extend accepted and rejected G3 crop decisions

**Started**: 2026-06-29 04:29 **Completed**: 2026-06-29 04:39 **Duration**: 10 minutes

**Notes**:

* Added 20 accepted G3 gameplay crops across Cold Cache, Corrupted Index, Firewall, Model Vault, and Kernel Core.
* Added 6 rejected crops for stripe, lock, barcode-like, and target-like candidates that fail no-text-safe or product-semantic review at tile scale.
* Preserved the session's gameplay-atlas-only assumption; no UI atlas manifest entries were added.

**Files Changed**:

* `docs/ongoing-projects/generated/ai-rogue-visual-audio-assets/crop-manifest.json` - Added accepted/rejected G3 manifest records.
* `.spec_system/specs/phase37-session04-g3-theme-decals/implementation-notes.md` - Recorded manifest decisions and T004 evidence.
* `.spec_system/specs/phase37-session04-g3-theme-decals/tasks.md` - Marked T004 complete and updated progress summary.

**Verification**:

* Command/check: `python3 - <<'PY' ... alpha bounding boxes ... PY`
  * Result: PASS - Source group boxes were derived from the G3 alpha sheet before selecting crop rectangles.
  * Evidence: The sheet has five themed rows and group boxes such as `(48, 48, 160, 160)`, `(48, 224, 160, 160)`, `(48, 416, 160, 160)`, `(48, 608, 160, 160)`, and `(48, 800, 160, 160)` for theme floor candidates.
* Command/check: `jq '{total:(.frames|length), accepted:([.frames[] | select(.status == "accepted")]|length), rejected:([.frames[] | select(.status == "rejected")]|length), g3:([.frames[] | select(.sourceFile | contains("ai-rogue-sector-themes-alpha.png"))]|length), g3Accepted:([.frames[] | select((.sourceFile | contains("ai-rogue-sector-themes-alpha.png")) and .status == "accepted")]|length), g3Rejected:([.frames[] | select((.sourceFile | contains("ai-rogue-sector-themes-alpha.png")) and .status == "rejected")]|length)}' docs/ongoing-projects/generated/ai-rogue-visual-audio-assets/crop-manifest.json`
  * Result: PASS - Manifest parses and G3 counts match intended decisions.
  * Evidence: 202 total records, 179 accepted, 23 rejected, 26 G3 records, 20 G3 accepted, 6 G3 rejected.
* UI product-surface check: N/A - Manifest-only task with no user-facing route changes.
* UI craft check: N/A - Manifest-only task with no visual UI changes yet.

**BQC Fixes**:

* Contract alignment: Manifest decisions use stable frame names and 16x16 target sizes so later typed contracts can reference deterministic gameplay frames (`crop-manifest.json`).

***

### Task T005 - Run the visual packer and refresh gameplay atlas output plus docs preview

**Started**: 2026-06-29 04:39 **Completed**: 2026-06-29 04:43 **Duration**: 4 minutes

**Notes**:

* Ran the deterministic visual packer after G3 manifest edits.
* Gameplay atlas and docs preview changed as expected; UI atlas files remained unchanged in `git diff`.
* The regenerated gameplay atlas now contains 20 G3 frame names and remains under the committed non-logo asset cap.

**Files Changed**:

* `src/assets/ai-rogue/gameplay-atlas.png` - Regenerated with accepted G3 gameplay frames.
* `src/assets/ai-rogue/gameplay-atlas.json` - Regenerated TexturePacker metadata with accepted G3 frames.
* `docs/extensions/ai-rogue/generated/ai-rogue-production-atlas-preview.png` - Regenerated docs preview.
* `.spec_system/specs/phase37-session04-g3-theme-decals/implementation-notes.md` - Recorded T005 packer evidence.
* `.spec_system/specs/phase37-session04-g3-theme-decals/tasks.md` - Marked T005 complete and updated progress summary.

**Verification**:

* Command/check: `python3 scripts/extensions/ai-rogue/pack-visual-assets.py`
  * Result: PASS - Packer completed successfully.
  * Evidence: gameplay 234 frames at 512x230 and 98,753 bytes; UI 115 frames at 512x140 and 24,672 bytes; manifest 179 accepted and 23 rejected; preview 160,796 bytes.
* Command/check: `git diff --name-only -- src/assets/ai-rogue/gameplay-atlas.png src/assets/ai-rogue/gameplay-atlas.json src/assets/ai-rogue/ui-atlas.png src/assets/ai-rogue/ui-atlas.json docs/extensions/ai-rogue/generated/ai-rogue-production-atlas-preview.png`
  * Result: PASS - Only expected gameplay atlas and docs preview outputs changed.
  * Evidence: Diff lists `docs/extensions/ai-rogue/generated/ai-rogue-production-atlas-preview.png`, `src/assets/ai-rogue/gameplay-atlas.json`, and `src/assets/ai-rogue/gameplay-atlas.png`.
* Command/check: `jq '{gameplayFrames:(.frames|keys|length), size:.meta.size, g3:([.frames|keys[] | select(test("^(tile|decal)_g3_"))]|length)}' src/assets/ai-rogue/gameplay-atlas.json`
  * Result: PASS - G3 frames are present in gameplay metadata.
  * Evidence: 234 gameplay frames, atlas size 512x230, 20 G3 frame names.
* Command/check: `jq '{uiFrames:(.frames|keys|length), size:.meta.size}' src/assets/ai-rogue/ui-atlas.json`
  * Result: PASS - UI atlas metadata baseline is preserved.
  * Evidence: 115 UI frames, atlas size 512x140.
* Command/check: `git diff -- src/assets/ai-rogue/ui-atlas.png src/assets/ai-rogue/ui-atlas.json --stat`
  * Result: PASS - UI atlas files have no diff.
  * Evidence: No output from `git diff --stat` for UI atlas files.
* UI product-surface check: N/A - Asset regeneration only; route proof is scheduled after runtime wiring.
* UI craft check: PASS - Regenerated preview contains the new G3 atlas rows and remains within the docs preview artifact.

**BQC Fixes**:

* Contract alignment: Verified accepted manifest frame names are present in the regenerated TexturePacker metadata before adding TypeScript contracts.

***

### Task T006 - Add typed G3 theme tile/decal frame-name contracts

**Started**: 2026-06-29 04:43 **Completed**: 2026-06-29 04:49 **Duration**: 6 minutes

**Notes**:

* Added `AiRogueG3ThemeTileFrameName`, `AiRogueG3ThemeDecalFrameName`, and `AiRogueG3ThemeGameplayFrameName` unions.
* Added G3 frame-name arrays and included G3 tile frames in the simulation tile frame list.
* Added all accepted G3 gameplay frames to `REQUIRED_GAMEPLAY_FRAME_NAMES`.

**Files Changed**:

* `src/extensions/ai-rogue/runtime/types-assets.ts` - Added G3 unions, arrays, and simulation tile frame entries.
* `src/extensions/ai-rogue/runtime/assets.ts` - Added G3 gameplay frames to required atlas validation.
* `.spec_system/specs/phase37-session04-g3-theme-decals/implementation-notes.md` - Recorded T006 evidence.
* `.spec_system/specs/phase37-session04-g3-theme-decals/tasks.md` - Marked T006 complete and updated progress summary.

**Verification**:

* Command/check: `bun run typecheck`
  * Result: PASS - TypeScript contracts compile after adding G3 frame unions and required gameplay frames.
  * Evidence: `tsc --noEmit` completed successfully.
* Command/check: `jq '{gameplayFrames:(.frames|keys|length), g3:([.frames|keys[] | select(test("^(tile|decal)_g3_"))]|length)}' src/assets/ai-rogue/gameplay-atlas.json`
  * Result: PASS - Required G3 frame names have matching committed atlas metadata.
  * Evidence: 234 gameplay frames and 20 G3 frame names in atlas metadata.
* UI product-surface check: N/A - Type contract task with no route changes.
* UI craft check: N/A - Type contract task with no visual UI changes.

**BQC Fixes**:

* Contract alignment: Replaced loose future G3 frame usage with typed unions, `as const` arrays, and required atlas frame registration.

***

### Task T007 - Create typed sector theme visual helpers

**Started**: 2026-06-29 04:49 **Completed**: 2026-06-29 04:57 **Duration**: 8 minutes

**Notes**:

* Added an exhaustive `AI_ROGUE_THEME_VISUALS` map for all five sector themes.
* Added deterministic tile-frame selection, sparse decal placement, high contrast/reduced-motion presentation handling, atmosphere colors, stable malformed-theme fallback, and coordinate hashing.
* Kept helper logic presentation-only; it does not mutate world topology or gameplay state.

**Files Changed**:

* `src/extensions/ai-rogue/runtime/theme-visuals.ts` - Added typed G3 theme visual mapping and deterministic helper functions.
* `.spec_system/specs/phase37-session04-g3-theme-decals/implementation-notes.md` - Recorded T007 evidence.
* `.spec_system/specs/phase37-session04-g3-theme-decals/tasks.md` - Marked T007 complete and updated progress summary.

**Verification**:

* Command/check: `bun run typecheck`
  * Result: PASS - New helper types and exhaustive theme map compile.
  * Evidence: `tsc --noEmit` completed successfully.
* Command/check: `sed -n '1,260p' src/extensions/ai-rogue/runtime/theme-visuals.ts`
  * Result: PASS - Helper includes tile variants, sparse decals, atmosphere colors, deterministic placement, high-contrast/reduced-motion preferences, and fallback handling.
  * Evidence: `AI_ROGUE_THEME_VISUALS` satisfies `Record<AiRogueSectorThemeId, AiRogueThemeVisuals>`.
* UI product-surface check: N/A - Helper is not wired into a rendered route yet.
* UI craft check: N/A - Helper is not wired into visual output yet.

**BQC Fixes**:

* Contract alignment: Theme visuals are keyed by `AiRogueSectorThemeId`, use typed G3 frame names, and fall back to Cold Cache for malformed string inputs.
* Failure path completeness: Unknown theme IDs resolve to a stable fallback instead of throwing during render projection.

***

### Task T008 - Add focused theme-visual helper tests

**Started**: 2026-06-29 04:57 **Completed**: 2026-06-29 05:01 **Duration**: 4 minutes

**Notes**:

* Added tests for exhaustive G3 mapping across all sector themes.
* Covered deterministic sparse decal selection, high-contrast and reduced-motion presentation choices, and malformed-theme fallback behavior.
* The tests search for deterministic decal coordinates instead of baking a fragile coordinate assumption.

**Files Changed**:

* `src/extensions/ai-rogue/runtime/__tests__/theme-visuals.test.ts` - Added focused G3 theme visual helper coverage.
* `.spec_system/specs/phase37-session04-g3-theme-decals/implementation-notes.md` - Recorded T008 evidence.
* `.spec_system/specs/phase37-session04-g3-theme-decals/tasks.md` - Marked T008 complete and updated progress summary.

**Verification**:

* Command/check: `bunx vitest run src/extensions/ai-rogue/runtime/__tests__/theme-visuals.test.ts`
  * Result: PASS - Theme visual helper tests passed.
  * Evidence: 1 test file passed, 5 tests passed.
* UI product-surface check: N/A - Helper unit test task with no user-facing route changes.
* UI craft check: N/A - Helper unit test task with no visual UI changes.

**BQC Fixes**:

* Contract alignment: Added test coverage that each sector maps to typed G3 tile/decal frames and stable atmosphere metadata.
* Failure path completeness: Added malformed-theme and hidden-tile fallback assertions.

***

### Task T009 - Wire world-generation tile frame selection through theme visuals

**Started**: 2026-06-29 05:01 **Completed**: 2026-06-29 05:06 **Duration**: 5 minutes

**Notes**:

* Routed generated floor, wall, hazard, door, vault, and terminal frame choices through `theme-visuals.ts`.
* Kept the same RNG calls and placement order; the helper changes only equivalent tile frame names after the existing fallback frame is selected.
* Start, exit, enemy, pickup, objective, topology, passability, sight-blocking, and hazard rules remain unchanged.

**Files Changed**:

* `src/extensions/ai-rogue/runtime/world-generator.ts` - Added theme frame helper wiring for generated tile frame names.
* `.spec_system/specs/phase37-session04-g3-theme-decals/implementation-notes.md` - Recorded T009 evidence.
* `.spec_system/specs/phase37-session04-g3-theme-decals/tasks.md` - Marked T009 complete and updated progress summary.

**Verification**:

* Command/check: `bun run typecheck`
  * Result: PASS - World generator wiring compiles with typed G3 frames.
  * Evidence: `tsc --noEmit` completed successfully.
* Command/check: `bunx vitest run src/extensions/ai-rogue/runtime/__tests__/world.test.ts src/extensions/ai-rogue/runtime/__tests__/themes.test.ts`
  * Result: PASS - Existing focused world/theme behavior remains stable.
  * Evidence: 2 test files passed, 11 tests passed.
* UI product-surface check: N/A - Runtime generation change is not yet browser inspected; browser proof is scheduled after renderer wiring.
* UI craft check: N/A - Tile variants are not yet fully projected with decals and atmosphere in browser proof.

**BQC Fixes**:

* Contract alignment: World tile frame selection now calls typed helper contracts and keeps tile kind/passability/sight/hazard contracts untouched.

***

### Task T010 - Wire sparse G3 decal overlay sprites in the render model

**Started**: 2026-06-29 05:06 **Completed**: 2026-06-29 05:10 **Duration**: 4 minutes

**Notes**:

* Added render-model projection for sparse G3 theme decals from `snapshot.theme`, tile kind, tile position, and render preferences.
* Decals sort above base tiles and below fog/entities, use tile-sized in-bounds rectangles, and reuse helper-provided visibility/exploration alpha.
* Labels are product-facing sector marks; they do not expose frame names, seed values, or diagnostics.

**Files Changed**:

* `src/extensions/ai-rogue/runtime/render-model.ts` - Added sparse theme decal projection.
* `.spec_system/specs/phase37-session04-g3-theme-decals/implementation-notes.md` - Recorded T010 evidence.
* `.spec_system/specs/phase37-session04-g3-theme-decals/tasks.md` - Marked T010 complete and updated progress summary.

**Verification**:

* Command/check: `bun run typecheck && bunx vitest run src/extensions/ai-rogue/runtime/__tests__/render-model.test.ts`
  * Result: PASS - Render-model projection compiles and existing render-model behavior remains stable.
  * Evidence: `tsc --noEmit` passed; 1 test file passed, 18 tests passed.
* UI product-surface check: N/A - Render-model projection is not yet inspected in browser; browser proof is scheduled after renderer atmosphere wiring.
* UI craft check: PASS - Decals use stable tile dimensions and z-order between tiles and fog so they cannot resize or cover entities/HUD.

**BQC Fixes**:

* Product surface discipline: Decal labels are product-facing sector labels and avoid debug/frame/seed terminology.
* Contract alignment: Render model consumes the typed theme helper and keeps sprite dimensions, atlas id, layer, z-order, alpha, and tint explicit.

***

### Task T011 - Wire theme-aware background atmosphere through renderer layers

**Started**: 2026-06-29 05:10 **Completed**: 2026-06-29 05:14 **Duration**: 4 minutes

**Notes**:

* Changed background drawing to resolve atmosphere colors from `snapshot.theme` through `themeAtmosphereForTheme`.
* Threaded render preferences into `drawBackground` so high-contrast and reduced-motion handling use the same layer presentation path.
* Preserved reduced-motion behavior: scanline drift still resolves through `resolveLayerPresentation`.

**Files Changed**:

* `src/extensions/ai-rogue/runtime/renderer-layers.ts` - Added theme-aware atmosphere resolution.
* `src/extensions/ai-rogue/runtime/renderer.ts` - Passed `state.runSnapshot.theme` and render preferences into background drawing.
* `.spec_system/specs/phase37-session04-g3-theme-decals/implementation-notes.md` - Recorded T011 evidence.
* `.spec_system/specs/phase37-session04-g3-theme-decals/tasks.md` - Marked T011 complete and updated progress summary.

**Verification**:

* Command/check: `bun run typecheck`
  * Result: PASS - Renderer layer signature and call site compile.
  * Evidence: `tsc --noEmit` completed successfully.
* Command/check: `rg -n "drawBackground|themeAtmosphereForTheme" src/extensions/ai-rogue/runtime/renderer.ts src/extensions/ai-rogue/runtime/renderer-layers.ts`
  * Result: PASS - Renderer passes `state.runSnapshot.theme`; layers resolve atmosphere through the G3 helper.
  * Evidence: `drawBackground` call site and layer implementation both reference the theme-aware path.
* UI product-surface check: N/A - Browser proof is scheduled after tests and e2e updates.
* UI craft check: PASS - Theme atmosphere remains full-canvas background treatment, with reduced-motion scanline handling preserved.

**BQC Fixes**:

* Contract alignment: Renderer and layer contracts now pass explicit `AiRogueSectorThemeId` and render preference data instead of inferring atmosphere from depth only.

***

### Task T012 - Align sector theme metadata with the new visual mapping

**Started**: 2026-06-29 05:14 **Completed**: 2026-06-29 05:18 **Duration**: 4 minutes

**Notes**:

* Added presentation-only `visualHint` metadata for each sector theme to document how `themes.ts` aligns with the G3 visual helper.
* Did not change pressure, enemy tables, palette hints, audio ambience routes, density deltas, or theme ordering.

**Files Changed**:

* `src/extensions/ai-rogue/runtime/themes.ts` - Added presentation-only G3 visual hints.
* `.spec_system/specs/phase37-session04-g3-theme-decals/implementation-notes.md` - Recorded T012 evidence.
* `.spec_system/specs/phase37-session04-g3-theme-decals/tasks.md` - Marked T012 complete and updated progress summary.

**Verification**:

* Command/check: `bun run typecheck && bunx vitest run src/extensions/ai-rogue/runtime/__tests__/themes.test.ts src/extensions/ai-rogue/runtime/__tests__/theme-visuals.test.ts`
  * Result: PASS - Theme metadata and visual helper contracts remain aligned.
  * Evidence: `tsc --noEmit` passed; 2 test files passed, 10 tests passed.
* UI product-surface check: N/A - Metadata-only task with no route changes.
* UI craft check: N/A - Metadata-only task with no visual UI changes.

**BQC Fixes**:

* Contract alignment: `themes.ts` now documents the presentation identity that `theme-visuals.ts` implements, while gameplay-affecting fields remain untouched.

***

### Task T013 - Update atlas contract tests for accepted G3 frames

**Started**: 2026-06-29 05:18 **Completed**: 2026-06-29 05:22 **Duration**: 4 minutes

**Notes**:

* Updated gameplay atlas validation from 214 to 234 frames.
* Added required-frame assertions for all 15 G3 tile frames and 5 G3 decal frames.
* Added TexturePacker metadata checks proving every G3 frame is compact, unrotated, untrimmed, and 16x16.

**Files Changed**:

* `src/extensions/ai-rogue/runtime/__tests__/assets.test.ts` - Added G3 atlas count, required-frame, and metadata coverage.
* `.spec_system/specs/phase37-session04-g3-theme-decals/implementation-notes.md` - Recorded T013 evidence.
* `.spec_system/specs/phase37-session04-g3-theme-decals/tasks.md` - Marked T013 complete and updated progress summary.

**Verification**:

* Command/check: `bunx vitest run src/extensions/ai-rogue/runtime/__tests__/assets.test.ts`
  * Result: PASS - Asset contract suite accepts the regenerated G3 gameplay atlas.
  * Evidence: 1 test file passed, 16 tests passed.
* UI product-surface check: N/A - Asset contract test task with no route changes.
* UI craft check: N/A - Asset contract test task with no visual UI changes.

**BQC Fixes**:

* Contract alignment: Tests now require every accepted G3 manifest frame in committed gameplay atlas metadata and the runtime required-frame list.

***

### Task T014 - Update theme tests for stable visual metadata

**Started**: 2026-06-29 05:22 **Completed**: 2026-06-29 05:25 **Duration**: 3 minutes

**Notes**:

* Added tests proving every sector theme resolves stable G3 visual metadata.
* Asserted unique visual hints and decal frames while preserving existing pressure and ambience coverage.

**Files Changed**:

* `src/extensions/ai-rogue/runtime/__tests__/themes.test.ts` - Added G3 visual metadata coverage.
* `.spec_system/specs/phase37-session04-g3-theme-decals/implementation-notes.md` - Recorded T014 evidence.
* `.spec_system/specs/phase37-session04-g3-theme-decals/tasks.md` - Marked T014 complete and updated progress summary.

**Verification**:

* Command/check: `bunx vitest run src/extensions/ai-rogue/runtime/__tests__/themes.test.ts`
  * Result: PASS - Theme suite covers stable G3 visual metadata.
  * Evidence: 1 test file passed, 6 tests passed.
* UI product-surface check: N/A - Theme metadata test task with no route changes.
* UI craft check: N/A - Theme metadata test task with no visual UI changes.

**BQC Fixes**:

* Contract alignment: Theme tests now prove sector theme IDs, labels, ambience routes, and G3 visual metadata stay aligned.

***

### Task T015 - Update world-generation tests for rule stability and frame variance

**Started**: 2026-06-29 05:25 **Completed**: 2026-06-29 05:30 **Duration**: 5 minutes

**Notes**:

* Added tests that compare rule-relevant world shape without frame names for the same seed/depth/options.
* Added tests proving each sector depth emits distinct G3 theme frame signatures without relying on debug labels.
* Added semantic assertions that themed wall and hazard frames do not alter passability, sight blocking, or hazard damage.

**Files Changed**:

* `src/extensions/ai-rogue/runtime/__tests__/world.test.ts` - Added G3 world rule-stability and frame-variance coverage.
* `.spec_system/specs/phase37-session04-g3-theme-decals/implementation-notes.md` - Recorded T015 evidence.
* `.spec_system/specs/phase37-session04-g3-theme-decals/tasks.md` - Marked T015 complete and updated progress summary.

**Verification**:

* Command/check: `bunx vitest run src/extensions/ai-rogue/runtime/__tests__/world.test.ts`
  * Result: PASS - World generation tests passed with G3 frame assertions.
  * Evidence: 1 test file passed, 8 tests passed.
* UI product-surface check: N/A - World unit test task with no route changes.
* UI craft check: N/A - World unit test task with no visual UI route changes.

**BQC Fixes**:

* Contract alignment: Added tests proving themed frame selection does not alter tile kind, passability, sight blocking, hazard damage, spawns, or start/exit facts for the same generated run.

***

### Task T016 - Update render-model tests for theme tiles and decals

**Started**: 2026-06-29 05:30 **Completed**: 2026-06-29 05:36 **Duration**: 6 minutes

**Notes**:

* Added render-model tests for G3 themed tile frames and sparse decal sprites.
* Covered z-order, gameplay atlas usage, in-bounds tile-sized projection, high-contrast tint/alpha, reduced-motion alpha, and product-facing labels.
* Fixed test-only set typing so broader runtime frame-name unions are accepted.

**Files Changed**:

* `src/extensions/ai-rogue/runtime/__tests__/render-model.test.ts` - Added G3 render-model projection tests.
* `src/extensions/ai-rogue/runtime/__tests__/world.test.ts` - Widened a test frame-name set to `Set<string>` for type safety.
* `.spec_system/specs/phase37-session04-g3-theme-decals/implementation-notes.md` - Recorded T016 evidence.
* `.spec_system/specs/phase37-session04-g3-theme-decals/tasks.md` - Marked T016 complete and updated progress summary.

**Verification**:

* Command/check: `bun run typecheck && bunx vitest run src/extensions/ai-rogue/runtime/__tests__/render-model.test.ts`
  * Result: PASS - Render-model G3 projection tests passed.
  * Evidence: `tsc --noEmit` passed; 1 test file passed, 20 tests passed.
* UI product-surface check: PASS - Tests assert G3 decal labels do not contain debug, telemetry, frame, or seed terminology.
* UI craft check: PASS - Tests assert G3 decals are tile-sized, in bounds, and z-ordered above tiles but below fog/entities.

**BQC Fixes**:

* Product surface discipline: Added tests for product-facing decal labels only.
* Contract alignment: Added tests for sprite atlas, layer, dimensions, alpha, tint, and z-order.

***

### Task T017 - Update biome and final-depth tests after G3 visual wiring

**Started**: 2026-06-29 05:36 **Completed**: 2026-06-29 05:43 **Duration**: 7 minutes

**Notes**:

* Added biome coverage proving generated themed worlds emit G3 visual frames while enemy pressure remains bounded and stable.
* Added Kernel Core final-depth coverage proving the generated boss floor keeps Kernel Sentinel placement and projects G3 decals.
* Initial final-depth render assertion failed because the boss can start outside the player FOV; the test now explicitly reveals enemies for presentation inspection, matching the tile reveal already used in the assertion.

**Files Changed**:

* `src/extensions/ai-rogue/runtime/__tests__/biome-final.test.ts` - Added G3 biome and final-depth coverage.
* `.spec_system/specs/phase37-session04-g3-theme-decals/implementation-notes.md` - Recorded T017 evidence.
* `.spec_system/specs/phase37-session04-g3-theme-decals/tasks.md` - Marked T017 complete and updated progress summary.

**Verification**:

* Command/check: `bunx vitest run src/extensions/ai-rogue/runtime/__tests__/biome-final.test.ts`
  * Result: PASS - Biome/final-depth suite passed with G3 visual assertions.
  * Evidence: 1 test file passed, 6 tests passed.
* UI product-surface check: N/A - Unit test task with no route changes.
* UI craft check: PASS - Test asserts Kernel Core generated presentation emits G3 decals while preserving final-depth boss setup.

**BQC Fixes**:

* Contract alignment: Added tests for G3 visual frames alongside theme pressure, Kernel Sentinel final-depth placement, and final-depth render projection.

***

### Task T018 - Run packer, typecheck, and asset-size validation

**Started**: 2026-06-29 05:43 **Completed**: 2026-06-29 05:47 **Duration**: 4 minutes

**Notes**:

* Ran the required packer, typecheck, and committed asset-size validation after implementation and focused tests.
* Gameplay atlas remains below the 200 KB committed non-logo asset cap.

**Files Changed**:

* `.spec_system/specs/phase37-session04-g3-theme-decals/implementation-notes.md` - Recorded T018 validation evidence.
* `.spec_system/specs/phase37-session04-g3-theme-decals/tasks.md` - Marked T018 complete and updated progress summary.

**Verification**:

* Command/check: `python3 scripts/extensions/ai-rogue/pack-visual-assets.py && bun run typecheck && bash scripts/check-asset-sizes.sh`
  * Result: PASS - Required validation commands completed successfully.
  * Evidence: Packer output gameplay 234 frames, 512x230, 98,753 bytes; UI 115 frames, 512x140, 24,672 bytes; manifest 179 accepted / 23 rejected; preview 160,796 bytes. `tsc --noEmit` passed. Asset check reported all assets within configured size limits, total 15M.
* UI product-surface check: N/A - Command validation task with no route changes.
* UI craft check: PASS - Asset-size validation confirms regenerated runtime and docs images remain within media policy limits.

**BQC Fixes**:

* Contract alignment: Re-ran packer and typecheck together to verify manifest, atlas metadata, and TypeScript frame contracts stay synchronized.

***

### Task T019 - Run focused Vitest suites for touched G3 behavior

**Started**: 2026-06-29 05:47 **Completed**: 2026-06-29 05:50 **Duration**: 3 minutes

**Notes**:

* Ran the combined focused Vitest set for assets, theme visuals, themes, world generation, render model, and biome/final behavior.

**Files Changed**:

* `.spec_system/specs/phase37-session04-g3-theme-decals/implementation-notes.md` - Recorded T019 focused test evidence.
* `.spec_system/specs/phase37-session04-g3-theme-decals/tasks.md` - Marked T019 complete and updated progress summary.

**Verification**:

* Command/check: `bunx vitest run src/extensions/ai-rogue/runtime/__tests__/assets.test.ts src/extensions/ai-rogue/runtime/__tests__/theme-visuals.test.ts src/extensions/ai-rogue/runtime/__tests__/themes.test.ts src/extensions/ai-rogue/runtime/__tests__/world.test.ts src/extensions/ai-rogue/runtime/__tests__/render-model.test.ts src/extensions/ai-rogue/runtime/__tests__/biome-final.test.ts`
  * Result: PASS - Focused G3 runtime suites passed.
  * Evidence: 6 test files passed, 61 tests passed.
* UI product-surface check: PASS - Focused render-model tests include product-facing decal label assertions.
* UI craft check: PASS - Focused render-model tests include in-bounds, tile-sized, and z-order assertions for decals.

**BQC Fixes**:

* Contract alignment: Combined focused test run verifies the asset, visual helper, theme, world, render-model, and biome/final contracts together.

***

### Task T020 - Run desktop AI Rogue browser proof for all five sector themes

**Started**: 2026-06-29 05:50 **Completed**: 2026-06-29 05:58 **Duration**: 8 minutes

**Notes**:

* Added a desktop Playwright proof that imports runtime modules in Chromium, generates all five sector themes, reveals tiles for presentation inspection, and asserts distinct G3 tile/decal frame signatures.
* First run failed because the proof viewport was too small for a full 30x16 generated world at runtime scale, making valid offscreen sprites fail the canvas-bounds assertion.
* Increased the proof viewport to 1024x640 so all generated world sprites fit in bounds for the desktop projection proof.

**Files Changed**:

* `tests/e2e/ai-rogue-runtime.spec.ts` - Added desktop G3 sector theme browser proof.
* `.spec_system/specs/phase37-session04-g3-theme-decals/implementation-notes.md` - Recorded T020 browser evidence.
* `.spec_system/specs/phase37-session04-g3-theme-decals/tasks.md` - Marked T020 complete and updated progress summary.

**Verification**:

* Command/check: `bun run typecheck && PLAYWRIGHT_REUSE_EXISTING_SERVER=true bunx playwright test tests/e2e/ai-rogue-runtime.spec.ts -g "AI Rogue desktop projects distinct G3 sector theme visuals in browser" --project=chromium`
  * Result: FAIL then fixed - Typecheck passed, but the initial Playwright run failed the in-bounds assertion due to the too-small 640x360 proof viewport.
  * Evidence: Failure occurred at `sprite.isInBounds`; implementation corrected the proof viewport to 1024x640.
* Command/check: `PLAYWRIGHT_REUSE_EXISTING_SERVER=true bunx playwright test tests/e2e/ai-rogue-runtime.spec.ts -g "AI Rogue desktop projects distinct G3 sector theme visuals in browser" --project=chromium`
  * Result: PASS - Desktop G3 sector theme browser proof passed.
  * Evidence: 1 Chromium Playwright test passed.
* UI product-surface check: PASS - Test asserts the normal Play route does not expose `tile_g3_`, `decal_g3_`, `theme-decal:`, `frameName`, or telemetry diagnostics in visible body text.
* UI craft check: PASS - Test asserts all generated G3 decal sprites are gameplay-atlas sprites, tile-layer sprites, in bounds, and distinct across all five sector themes.

**BQC Fixes**:

* Product surface discipline: Added browser assertion that G3 frame names and diagnostics are absent from the normal route.
* Contract alignment: Added browser-side runtime projection proof for all five sector themes.

***

### Task T021 - Run mobile AI Rogue browser proof for theme readability and layout

**Started**: 2026-06-29 05:58 **Completed**: 2026-06-29 06:07 **Duration**: 9 minutes

**Notes**:

* Added a mobile Playwright proof that focuses the render model on deterministic G3 decal tiles for all five sector themes at mobile tile scale.
* The test also exercises compact controls on the real Play route, verifies the move recovery path, checks no horizontal overflow, and checks the canvas and compact controls do not overlap.

**Files Changed**:

* `tests/e2e/ai-rogue-mobile.spec.ts` - Added mobile G3 readability and compact-control proof.
* `.spec_system/specs/phase37-session04-g3-theme-decals/implementation-notes.md` - Recorded T021 browser evidence.
* `.spec_system/specs/phase37-session04-g3-theme-decals/tasks.md` - Marked T021 complete and updated progress summary.

**Verification**:

* Command/check: `bun run typecheck && PLAYWRIGHT_REUSE_EXISTING_SERVER=true bunx playwright test tests/e2e/ai-rogue-mobile.spec.ts -g "AI Rogue mobile keeps G3 theme decals readable with compact controls" --project=chromium`
  * Result: PASS - Mobile G3 browser proof passed.
  * Evidence: `tsc --noEmit` passed; 1 Chromium Playwright test passed.
* UI product-surface check: PASS - Test asserts the normal mobile Play route does not expose `tile_g3_`, `decal_g3_`, `theme-decal:`, or `frameName` diagnostics.
* UI craft check: PASS - Test asserts readable in-bounds reduced-motion decals at mobile tile scale, compact controls visible/enabled, no canvas/control overlap, and no horizontal document overflow.

**BQC Fixes**:

* Accessibility and platform compliance: Mobile proof exercises compact control buttons and confirms movement updates the runtime event stream.
* Product surface discipline: Added mobile route assertion that G3 frame diagnostics are absent from visible body text.

***

### Task T022 - Update visual asset documentation and validate closeout checks

**Started**: 2026-06-29 06:07 **Completed**: 2026-06-29 06:18 **Duration**: 11 minutes

**Notes**:

* Added the G3 Sector Theme Decal Pass section to visual asset documentation with current atlas counts, accepted/rejected decisions, runtime wiring, and validation evidence.
* Ran Prettier on touched source, tests, docs, and session markdown.
* Re-ran typecheck, focused Vitest suites, and targeted desktop/mobile browser proofs after formatting.
* Ran ASCII, LF, trailing-whitespace, and `git diff --check` validation.

**Files Changed**:

* `docs/extensions/ai-rogue/visual-assets.md` - Documented the G3 sector theme decal pass, frame groups, rejected candidates, runtime wiring, and validation evidence.
* `.spec_system/specs/phase37-session04-g3-theme-decals/implementation-notes.md` - Recorded T022 closeout evidence and completion notes.
* `.spec_system/specs/phase37-session04-g3-theme-decals/tasks.md` - Marked T022 and completion checklist complete.

**Verification**:

* Command/check: `bunx prettier --write docs/extensions/ai-rogue/visual-assets.md src/extensions/ai-rogue/runtime/theme-visuals.ts src/extensions/ai-rogue/runtime/__tests__/theme-visuals.test.ts src/extensions/ai-rogue/runtime/__tests__/assets.test.ts src/extensions/ai-rogue/runtime/__tests__/biome-final.test.ts src/extensions/ai-rogue/runtime/__tests__/render-model.test.ts src/extensions/ai-rogue/runtime/__tests__/themes.test.ts src/extensions/ai-rogue/runtime/__tests__/world.test.ts src/extensions/ai-rogue/runtime/assets.ts src/extensions/ai-rogue/runtime/render-model.ts src/extensions/ai-rogue/runtime/renderer-layers.ts src/extensions/ai-rogue/runtime/renderer.ts src/extensions/ai-rogue/runtime/themes.ts src/extensions/ai-rogue/runtime/types-assets.ts src/extensions/ai-rogue/runtime/world-generator.ts tests/e2e/ai-rogue-mobile.spec.ts tests/e2e/ai-rogue-runtime.spec.ts .spec_system/specs/phase37-session04-g3-theme-decals/spec.md .spec_system/specs/phase37-session04-g3-theme-decals/tasks.md .spec_system/specs/phase37-session04-g3-theme-decals/implementation-notes.md`
  * Result: PASS - Touched text/code files formatted.
  * Evidence: Prettier completed; only expected formatted files changed.
* Command/check: `bun run typecheck && bunx vitest run src/extensions/ai-rogue/runtime/__tests__/assets.test.ts src/extensions/ai-rogue/runtime/__tests__/theme-visuals.test.ts src/extensions/ai-rogue/runtime/__tests__/themes.test.ts src/extensions/ai-rogue/runtime/__tests__/world.test.ts src/extensions/ai-rogue/runtime/__tests__/render-model.test.ts src/extensions/ai-rogue/runtime/__tests__/biome-final.test.ts`
  * Result: PASS - Typecheck and focused suites remain clean after formatting.
  * Evidence: `tsc --noEmit` passed; 6 test files passed, 61 tests passed.
* Command/check: `PLAYWRIGHT_REUSE_EXISTING_SERVER=true bunx playwright test tests/e2e/ai-rogue-runtime.spec.ts -g "AI Rogue desktop projects distinct G3 sector theme visuals in browser" --project=chromium && PLAYWRIGHT_REUSE_EXISTING_SERVER=true bunx playwright test tests/e2e/ai-rogue-mobile.spec.ts -g "AI Rogue mobile keeps G3 theme decals readable with compact controls" --project=chromium`
  * Result: PASS - Targeted desktop and mobile G3 browser proofs remain clean after formatting.
  * Evidence: 1 Chromium desktop test passed and 1 Chromium mobile test passed.
* Command/check: `text_files=$(git ls-files -m -o --exclude-standard | grep -Ev '\.(png|webm|zip)$' || true); ...; git diff --check`
  * Result: PASS - ASCII, LF, trailing-whitespace, and diff whitespace checks passed after final checkbox marking.
  * Evidence: No ASCII/LF/trailing-whitespace, unchecked task, or `git diff --check` failures after the T022 closeout patch.
* UI product-surface check: PASS - Desktop and mobile browser proofs assert normal Play route body text does not expose G3 frame diagnostics.
* UI craft check: PASS - Desktop and mobile browser proofs assert G3 decals are readable, in-bounds, appropriately sized, non-overlapping with controls on mobile, and distinct across the five sector themes.

**BQC Fixes**:

* Product surface discipline: Documented and verified that G3 evidence lives in tests/docs/notes, not route-visible diagnostics.
* Contract alignment: Final checks verify manifest, atlas metadata, typed frame contracts, unit tests, and browser proofs are synchronized.

***

## Completion Notes

* Completed all 22 implementation tasks for `phase37-session04-g3-theme-decals`.
* No external blockers remain.
* BQC fixes were applied for contract alignment, product-surface discipline, fallback handling, mobile platform checks, and render projection sizing.
* Next workflow command is `creview`.


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