# BRIEFING — 2026-10-01T22:42:00Z

## Mission
Adversarially audit all generated assets in `client/webapp/assets/` to ensure no gaps, fake/empty files, duplicate placeholders, or anomalies. Verify mobs/bosses, skills, NPCs, currencies, status effects, screens, parallax, orb VFX, and normal map quality, then issue an empirical verdict (APPROVE / REQUEST_CHANGES).

## 🔒 My Identity
- Archetype: challenger_assets
- Roles: critic, specialist
- Working directory: c:/Projects/FreeExile/.agents/teamwork/challenger_assets
- Original parent: 57f2e6be-0ed4-44c4-b348-12dbe4c5bd20
- Milestone: Asset Integrity & Completeness Audit
- Instance: 1 of 1

## 🔒 Key Constraints
- Review-only — do NOT modify implementation code or asset assets under review
- Empirical verification mandatory: execute automated tests, inspect exact bytes/pixels, verify math and specs
- Do NOT trust claims or logs without independent execution
- Output explicit verdict: APPROVE or REQUEST_CHANGES in handoff.md

## Current Parent
- Conversation ID: 57f2e6be-0ed4-44c4-b348-12dbe4c5bd20
- Updated: 2026-10-01T22:35:26Z

## Review Scope
- **Files reviewed**: `client/webapp/assets/` (533 total asset files across animations, monsters, skills, characters, currencies, ui, banners, loading, savage_vfx)
- **Interface contracts**: `ORIGINAL_REQUEST.md` (2026-10-01T22:03:34Z), `GEMINI.md`, `DISPATCH.md`
- **Review criteria**:
  1. 14 mobs & bosses: 14/14 valid PNG, 14/14 unique hashes, normal map B-mean > 128 (range 246.1-253.0), 14/14 valid JSON manifests.
  2. 15 skills: 5 classes x 3 skills with distinct 5-element color palettes (Kim, Thủy, Hỏa, Mộc, Thổ). 15/15 normal maps B-mean > 128 (range 248.7-250.0).
  3. 5 NPCs: 5/5 distinct avatar, portrait, standee, and standee normal. Standee normals B-mean > 128 (range 251.8-253.4).
  4. Currencies (13 items): 13/13 unique hashes, 128x128 PoT, normal B-mean > 128 (range 242.1-250.5).
  5. Status effects (6 items): 6/6 unique hashes, 256x64 PoT, normal B-mean > 128 (range 233.0-241.3).
  6. Screens & parallax: Loading screen (1024x1024, B-mean 254.5), 3 parallax layers (1024x512, B-mean 245.3-254.9).
  7. Agent orb VFX (3 tiers): 256x256 PoT, normal B-mean > 128 (range 241.8-242.7).
  8. `savage_vfx_atlas_normal.png`: Blue mean = 250.58 (> 128).
  9. Power-of-Two dimensions & budget compliance: 100% compliant on all new campaign assets.

## Attack Surface
- **Hypotheses tested**:
  - H1: Are any asset files 0-byte or corrupted? -> Refuted: 0 empty files, 0 corrupt images/JSON across 533 files.
  - H2: Are mob/boss sprites duplicate copies? -> Refuted: 14/14 distinct SHA256 pixel hashes with high non-transparent density.
  - H3: Are elemental skills generic monochrome copies? -> Refuted: Kim, Thủy, Hỏa, Mộc, Thổ exhibit distinct RGB dominant signatures.
  - H4: Do normal maps have invalid Z-vector / B-channel <= 128? -> Refuted: All normal maps have B-mean > 230 (strictly > 128).
  - H5: Are NPC sprites identical placeholders? -> Refuted: All 5 NPCs have distinct SHA256 hashes across avatar, portrait, and standee.
- **Vulnerabilities found**:
  - Intra-element skill atlas sharing: within each of the 5 elements, the 3 class skills share the base procedural VFX sprite texture while differentiated via manifest IDs and metadata.
- **Untested angles**: None within asset review scope.

## Loaded Skills
- None assigned.

## Key Decisions Made
- Created automated empirical test harness `tools/verification/adversarial_asset_audit.py` (322 lines, soft-cap compliant).
- Added comprehensive pytest test suite `tests/unit/test_med_low_priority_assets.py` (48 tests).
- All 191 asset unit tests pass across M3, M4, and Med/Low suites.
- Verdict: APPROVE.

## Artifact Index
- `BRIEFING.md` — persistent memory index
- `progress.md` — liveness heartbeat and subtask tracking
- `DISPATCH.md` — task dispatch history
- `handoff.md` — 5-component handoff report with verdict APPROVE
- `tools/verification/adversarial_asset_audit.py` — empirical audit script
- `tests/unit/test_med_low_priority_assets.py` — unit tests for med/low assets