# Journal - dingkang (Part 1)

> AI development session journal
> Started: 2026-08-03

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## Session 1: Initialize Trellis project guidelines

**Date**: 2026-08-03
**Task**: Initialize Trellis project guidelines
**Branch**: `main`

### Summary

Initialized Trellis project scaffolding and replaced the incorrect frontend spec templates with project-specific pipeline, Blender, preview, config, and cross-layer guidance. Verified spec layers, placeholder cleanup, key-contract coverage, and Blender pure Python tests.

### Git Commits

| Hash | Message |
|------|---------|
| `4c5981c` | (see git log) |

### Status

[OK] **Completed**


## Session 2: Refactor Cesium material export contract

**Date**: 2026-08-03
**Task**: Refactor Cesium material export contract
**Branch**: `main`

### Summary

Moved Cesium material export overrides into catalog-backed material contracts saved as Blender material custom properties. Kept legacy name-table fallback for old .blend files, updated Blender/spec guidance, and verified with unit tests, py_compile, diff check, and parity before/after comparison showing only expected cesium_export blend property diffs.

### Git Commits

| Hash | Message |
|------|---------|
| `0635c09` | (see git log) |

### Status

[OK] **Completed**