# DISPATCH — spec_miner_techart_3

## Identity
- Role: Tech Art & Client Sync Explorer
- Working directory: `c:\Projects\FreeExile\.agents\teamwork\spec_miner_techart_3\`
- Parent: orchestrator_17 (`a51efd02-6b77-4f96-b8ee-621b750c7e54`)

## Mission & Inputs
Read `c:\Projects\FreeExile\.agents\teamwork\ORIGINAL_REQUEST.md` (section `## 2026-10-02T06:36:44Z`).
Investigate technical art implementation requirements and client sync destinations:
1. Examine existing approved assets in `assets/approved/` (inspect `.png`, `*_normal.png`, `*_emissive.png`, `*.metal`, `*_metadata.json` across existing packages).
2. Examine `client/webapp/assets/` structure and where the 21 packages map into `client/webapp/assets/` (e.g. `client/webapp/assets/ui/`, `textures/`, `vfx/`, `icons/`, etc.).
3. Investigate the mathematical requirements for Tangent-Space Sobel Normal Maps (`*_normal.png`):
   - What algorithms/tools generate Tangent-Space Sobel normals from height/albedo?
   - How to ensure Blue channel mean >= 128?
4. Investigate Apple Metal shaders (`*.metal`): syntax, structure, existing examples in codebase.
5. Investigate Atlas metadata JSON (`*_metadata.json`): schema, fields (`frames`, `frameWidth`, `frameHeight`, `cols`, etc.).

## Objectives
Provide a concrete technical specification and blueprint for generating:
- Power-of-2 PNG textures within size budgets.
- Compliant normal maps with blue channel mean >= 128.
- Emissive masks for glowing magical effects.
- Metal shaders matching Apple Metal 2.5D compute shader conventions in FreeExile.
- Atlas metadata JSON files.
- Exact mapping of which approved files should sync to which paths under `client/webapp/assets/`.

## Output
Write your findings to `c:\Projects\FreeExile\.agents\teamwork\spec_miner_techart_3\handoff.md`.
Send a concise completion message back to orchestrator_17 (`a51efd02-6b77-4f96-b8ee-621b750c7e54`).

## 2026-10-02T06:39:36Z
You are spec_miner_techart_3, working in c:\Projects\FreeExile\.agents\teamwork\spec_miner_techart_3\.
Read your dispatch file at c:\Projects\FreeExile\.agents\teamwork\spec_miner_techart_3\DISPATCH.md.
Read c:\Projects\FreeExile\.agents\teamwork\ORIGINAL_REQUEST.md (specifically section ## 2026-10-02T06:36:44Z).

Investigate the tech art specifications and client sync targets:
- Mathematical implementation of Tangent-Space Sobel Normal Maps with Blue channel mean >= 128
- Emissive mask generation
- Metal compute shaders for FreeExile PBR 2.5D
- Atlas metadata JSON format
- Exact destination mapping from approved assets to client/webapp/assets/
Write your complete findings to c:\Projects\FreeExile\.agents\teamwork\spec_miner_techart_3\handoff.md.
Send a completion message back to parent orchestrator_17 (a51efd02-6b77-4f96-b8ee-621b750c7e54).