# Journal - dingkang (Part 1)

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

---



## 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**


## Session 3: Archive osmassets refactor plan

**Date**: 2026-08-03
**Task**: Archive osmassets refactor plan
**Branch**: `main`

### Summary

Moved durable conclusions from the temporary osmassets refactor plan into changelog and Trellis specs, removed docs/refactor-plan.md, and verified no live docs/spec references to the deleted plan remain.

### Git Commits

| Hash | Message |
|------|---------|
| `6882921` | (see git log) |

### Status

[OK] **Completed**


## Session 4: Extract fountain module

**Date**: 2026-08-03
**Task**: Extract fountain module
**Branch**: `main`

### Summary

Moved fountain assembly from generate_scene.py into blender/osmassets/fountain.py, updated P2 refactor docs, and verified py_compile, 51 pure tests, and Blender/Cesium parity before/after with identical snapshots.

### Git Commits

| Hash | Message |
|------|---------|
| `6271055` | (see git log) |

### Status

[OK] **Completed**


## Session 5: Extract building module

**Date**: 2026-08-03
**Task**: Extract building module
**Branch**: `main`

### Summary

Moved building assembly from generate_scene.py into blender/osmassets/building.py, updated P2 refactor docs so only roads remains in generate_scene.py, and verified py_compile, 51 pure tests, and Blender/Cesium parity before/after with identical snapshots.

### Git Commits

| Hash | Message |
|------|---------|
| `032922a` | (see git log) |

### Status

[OK] **Completed**


## Session 6: Extract road assembly module

**Date**: 2026-08-03
**Task**: Extract road assembly module
**Branch**: `main`

### Summary

Moved Blender road GeoJSON assembly and OSM fallback roads into blender/osmassets/roads.py while preserving road_counts, Layer catalog warnings, scene metadata, and SCENE_DONE output. Verified py_compile, unittest, task validation, and Blender/Cesium parity before/after as identical for both sample areas.

### Git Commits

| Hash | Message |
|------|---------|
| `0f3c1ee` | (see git log) |

### Status

[OK] **Completed**


## Session 7: Add feature registry dispatch

**Date**: 2026-08-03
**Task**: Add feature registry dispatch
**Branch**: `main`

### Summary

Introduced blender/osmassets/features.py with FeatureHandler and dispatch_ways for ordered OSM way feature dispatch. Converted generate_scene.py water/grass/scrub/tree_row/building branches into registry handlers while keeping material order, counts, road warning behavior, scene metadata, and SCENE_DONE unchanged. Verified py_compile, unittest, task validation, and Blender/Cesium parity before/after as identical for both sample areas.

### Git Commits

| Hash | Message |
|------|---------|
| `ff18217` | (see git log) |

### Status

[OK] **Completed**


## Session 8: Clean stale tuft density comment

**Date**: 2026-08-03
**Task**: Clean stale tuft density comment
**Branch**: `main`

### Summary

Cleared stale D3 tuft_density_wave comment debt and updated parity guide known-defect records without changing executable scene generation logic. Verified py_compile, 51 pure tests, and task validation.

### Git Commits

| Hash | Message |
|------|---------|
| `f569d45` | (see git log) |

### Status

[OK] **Completed**


## Session 9: Improve Cesium cruise smoothness

**Date**: 2026-08-03
**Task**: Improve Cesium cruise smoothness
**Branch**: `main`

### Summary

Reduced Cesium preview cruise stutter by lowering dense scrub bush nodes in nantaizi from 707 to 266, preserving scrub ground cover, and trimming preview route/follow hot-path overhead without lowering default visual clarity. Verified nantaizi blender/cesium/preview rebuild, node --check, py_compile, 51 pure tests, and task validation.

### Git Commits

| Hash | Message |
|------|---------|
| `0d2dc22` | (see git log) |

### Status

[OK] **Completed**


## Session 10: Reject low-poly scrub bush experiment

**Date**: 2026-08-03
**Task**: Reject low-poly scrub bush experiment
**Branch**: `main`

### Summary

Tested user-supplied assets/models/custom/bush_low/bush_low.glb for nantaizi scrub edge bushes. Geometry dropped from 63,762 verts / 67,536 indices to 4,044 / 4,050 and GLB size dropped from 31.96 MB to 27.51 MB with 266 scrub bush nodes unchanged, but user validation found the visual effect unsatisfactory. Restored generate_scene.py to the original default bush asset, archived the task, and recorded the rejected experiment in changelog/spec without adding bush_low to git.

### Git Commits

| Hash | Message |
|------|---------|
| `e58a928` | (see git log) |

### Status

[OK] **Completed**


## Session 11: Adopt Shapespark vegetation

**Date**: 2026-08-03
**Task**: Adopt Shapespark vegetation
**Branch**: `main`

### Summary

Adopted split Shapespark low-poly plants for nantaizi trees, scrub bushes, and lawn tufts; toned Cesium foliage export, removed retired vegetation assets/loaders, validated nantaizi blender/cesium/preview.

### Git Commits

| Hash | Message |
|------|---------|
| `dbb5705` | (see git log) |

### Status

[OK] **Completed**


## Session 12: Optional GLB compression stage

**Date**: 2026-08-03
**Task**: Optional GLB compression stage
**Branch**: `main`

### Summary

Added an explicit compress stage and GLB compression script for nantaizi WebP review artifacts without replacing the baseline GLB.

### Git Commits

| Hash | Message |
|------|---------|
| `7ba8594` | (see git log) |

### Status

[OK] **Completed**


## Session 13: Fix OSM multipolygon buildings

**Date**: 2026-08-03
**Task**: Fix OSM multipolygon buildings
**Branch**: `main`

### Summary

Parsed building multipolygon relations, generated building holes, and respected explicit OSM height for nantaizi relation -65.

### Git Commits

| Hash | Message |
|------|---------|
| `95f8458` | (see git log) |

### Status

[OK] **Completed**


## Session 14: Add area diagnostics command

**Date**: 2026-08-04
**Task**: Add area diagnostics command
**Branch**: `main`

### Summary

Added a fast diagnose:area command for OSM structure, building relation health, artifact status, and GLB digest checks; shared area config normalization between build and diagnostics.

### Git Commits

| Hash | Message |
|------|---------|
| `d4c3baf` | (see git log) |

### Status

[OK] **Completed**


## Session 15: Add GLB stage manifests

**Date**: 2026-08-04
**Task**: Add GLB stage manifests
**Branch**: `main`

### Summary

Added first-version cesium and compress stage manifests under _pipeline/stages, shared manifest helpers, and diagnose:area reporting for missing/stale manifests.

### Git Commits

| Hash | Message |
|------|---------|
| `2832383` | (see git log) |

### Status

[OK] **Completed**


## Session 16: Add area quality gate

**Date**: 2026-08-04
**Task**: Add area quality gate
**Branch**: `main`

### Summary

Added a read-only check:area command backed by shared area diagnostics, documented the quality-gate failure policy, and verified nantaizi pass plus controlled missing-output failure.

### Git Commits

| Hash | Message |
|------|---------|
| `7fcc4ee` | (see git log) |

### Status

[OK] **Completed**


## Session 17: Add full stage manifests

**Date**: 2026-08-04
**Task**: Add full stage manifests
**Branch**: `main`

### Summary

Extended stage manifests across intermediates, reimport, blender, and preview; added alternate ownership handling and validated the complete nantaizi pipeline.

### Git Commits

| Hash | Message |
|------|---------|
| `5874cf9` | (see git log) |

### Status

[OK] **Completed**


## Session 18: Add OSM area preflight

**Date**: 2026-08-04
**Task**: Add OSM area preflight
**Branch**: `main`

### Summary

Added the read-only preflight:area command, a successful preflight manifest, shared OSM structural checks, and quality-gate freshness validation. OSM diagnostics now ignore action=delete historical objects; verified only nantaizi with unit fixtures, preflight, diagnose, check, and a controlled stale-manifest failure.

### Git Commits

| Hash | Message |
|------|---------|
| `e1f5207` | (see git log) |

### Status

[OK] **Completed**


## Session 19: Add configurable area asset budgets

**Date**: 2026-08-04
**Task**: Add configurable area asset budgets
**Branch**: `main`

### Summary

Added configurable GLB budgets with documented exceptions, shared budget evaluation for diagnostics, quality gates, and Cesium/compress manifests, plus render-triangle, embedded-image, and source attribution diagnostics. Verified budget tests, preflight tests, nantaizi diagnostics/check, and a controlled low-budget failure without running heavy stages.

### Git Commits

| Hash | Message |
|------|---------|
| `463cb06` | (see git log) |

### Status

[OK] **Completed**


## Session 20: Split area preview orchestration

**Date**: 2026-08-04
**Task**: Split area preview orchestration
**Branch**: `main`

### Summary

Extracted preview route, vehicle glTF, and HTML/runtime assembly from build-area into focused modules; added preview asset tests and verified nantaizi preview, diagnostics, and quality gate.

### Git Commits

| Hash | Message |
|------|---------|
| `396df51` | (see git log) |

### Status

[OK] **Completed**


## Session 21: Add OSM turn lane arrows

**Date**: 2026-08-05
**Task**: Add OSM turn lane arrows
**Branch**: `main`

### Summary

Added vendored lane-icons assets, tested OSM turn-lane arrow generation and lane-center placement, and normalized crosswalk and stop-line generation around rendered Driving lanes.

### Git Commits

| Hash | Message |
|------|---------|
| `9a23f74` | (see git log) |

### Status

[OK] **Completed**


## Session 22: Cesium semantic inspection preview

**Date**: 2026-08-05
**Task**: Cesium semantic inspection preview
**Branch**: `main`

### Summary

Added semantic Cesium inspection assets and controls; fixed compressed metadata to preserve inspection assets; verified the rebuilt compressed preview.

### Git Commits

| Hash | Message |
|------|---------|
| `607d8fc` | (see git log) |

### Status

[OK] **Completed**


## Session 23: 车辆连续巡航与转弯

**Date**: 2026-08-05
**Task**: 车辆连续巡航与转弯
**Branch**: `main`

### Summary

实现 OSM 有向道路图驱动的连续往返车辆路线，支持 turn:lanes 转向筛选、单行限制、路口曲线与端点调头；Cesium 路线选择显示编号、长度及左/右/直统计，并补充路线 JSON 中文契约与自动化验证。

### Git Commits

| Hash | Message |
|------|---------|
| `30846b6` | (see git log) |

### Status

[OK] **Completed**


## Session 24: 拆分 LowPoly Cars 车辆资产

**Date**: 2026-08-05
**Task**: 拆分 LowPoly Cars 车辆资产
**Branch**: `main`

### Summary

拆分 LowPoly Cars 资产库并接入 Cesium 预览候选集；每条巡航路线独立随机选模型，修正贴图、亮度、比例和 Truck A03 行驶方向；导入脚本支持脱离 Blender 验证已入库资产。

### Git Commits

| Hash | Message |
|------|---------|
| `3108336` | (see git log) |
| `2489b8a` | (see git log) |

### Status

[OK] **Completed**


## Session 25: Cesium traffic signal countdowns

**Date**: 2026-08-06
**Task**: Cesium traffic signal countdowns
**Branch**: `main`

### Summary

Added shared 7LED countdown geometry, split dynamic Cesium assets by phase group for reliable lamp-matched colors, documented the inverse-font and exporter grouping contracts, and verified the preview asset and Blender Python test suites.

### Git Commits

| Hash | Message |
|------|---------|
| `0e1574f` | (see git log) |

### Status

[OK] **Completed**


## Session 26: 交通信号拓扑与部分构建同步修复

**Date**: 2026-08-07
**Task**: 交通信号拓扑与部分构建同步修复
**Branch**: `main`

### Summary

基于 OSM highway=traffic_signals 控制节点生成 T/十字路口信号，复用共享 OSM 解析；Blender stage 每次重写交通信号锚点，避免部分构建沿用旧 JSON 导致 GLB 与 Cesium 预览 signal id 错位。验证了 nantaizi 区域 35 盏信号、动态/倒计时 GLB、Safari 预览和 preview-assets 测试。

### Git Commits

| Hash | Message |
|------|---------|
| `1c077a3` | (see git log) |

### Status

[OK] **Completed**


## Session 27: QGIS traffic signal editing and countdown stability

**Date**: 2026-08-07
**Task**: QGIS traffic signal editing and countdown stability
**Branch**: `main`

### Summary

Implemented editable traffic signal assemblies in QGIS with stable IDs, position/heading overrides, reimport ownership, source validation, and Blender/Cesium runtime derivation. Fixed long signal IDs overflowing Blender node names with short nodeKey values, and changed QGIS SVG symbols to direct heading_deg field rotation so QGIS rotation edits write back to the field. Verified real GeoPackage round-trip, focused Node tests, preview tests, and 59 Blender tests. Safari cache caused stale GLB symptoms and was resolved with a hard refresh.

### Git Commits

| Hash | Message |
|------|---------|
| `e153a1c` | (see git log) |

### Status

[OK] **Completed**


## Session 28: 默认压缩交付

**Date**: 2026-08-11
**Task**: 默认压缩交付
**Branch**: `main`

### Summary

将 GLB 压缩纳入默认构建并使用标准产物路径交付，移除并列压缩输出契约；同步诊断、测试与文档。

### Git Commits

| Hash | Message |
|------|---------|
| `0790cbd` | (see git log) |

### Status

[OK] **Completed**


## Session 29: Publish reusable area asset packages

**Date**: 2026-08-12
**Task**: Publish reusable area asset packages
**Branch**: `main`

### Summary

Published the reusable osm-asset-package/v1 contract, moved static models under package/, kept dynamic cruise and signal assets in _preview/, fixed preview manifest-relative loading, and verified the target area quality gate.

### Git Commits

| Hash | Message |
|------|---------|
| `f385009` | (see git log) |
| `c925890` | (see git log) |
| `db0fba5` | (see git log) |
| `f2b8d79` | (see git log) |
| `0102ffb` | (see git log) |

### Status

[OK] **Completed**


## Session 30: Add vehicle incident preview cards

**Date**: 2026-08-12
**Task**: Add vehicle incident preview cards
**Branch**: `main`

### Summary

Added click-to-open vehicle information cards with normal, breakdown, and accident preview-only states, floating vehicle-anchored cards, route and motion changes, plus bundled repair and warning icons.

### Git Commits

| Hash | Message |
|------|---------|
| `761a526` | (see git log) |

### Status

[OK] **Completed**


## Session 31: Native road lane markings

**Date**: 2026-08-14
**Task**: Native road lane markings
**Branch**: `feature/native-road-compiler`

### Summary

Implemented native lane separators, repeated road direction arrows, explicit junction turn arrows, Workbench inspection/toggles, and Blender/Cesium adapter support for Nantaizi; validated native compile, checks, tests, and non-package visual build.

### Git Commits

| Hash | Message |
|------|---------|
| `1b9829d` | (see git log) |

### Status

[OK] **Completed**


## Session 32: Native road control markings

**Date**: 2026-08-17
**Task**: Native road control markings
**Branch**: `feature/native-road-compiler`

### Summary

Added native-source crosswalk and stop-line layers with workbench inspection, Blender/Cesium delivery, and control-marking arrow avoidance.

### Main Changes

- Compiled explicit marked OSM crossings into source-traceable native GeoJSON.
- Added Chinese workbench control-layer toggle, selection evidence, and summary counts.

### Git Commits

| Hash | Message |
|------|---------|
| `4c4f453` | (see git log) |

### Testing

- [OK] Passed native-road, road-workbench, turn-lane-arrows, build-stages, native compile/check, and Blender/Cesium/preview build.

### Status

[OK] **Completed**

### Next Steps

- Continue native road compiler workbench with the next user-approved priority.


## Session 33: Add native road center lines

**Date**: 2026-08-17
**Task**: Add native road center lines
**Branch**: `feature/native-road-compiler`

### Summary

Implemented Nantaizi native-road center_lines output, workbench selection/toggle, Blender adapter, control-marking avoidance, and cross-layer verification.

### Git Commits

| Hash | Message |
|------|---------|
| `fb863da` | (see git log) |

### Status

[OK] **Completed**


## Session 34: Add center line style overrides

**Date**: 2026-08-17
**Task**: Add center line style overrides
**Branch**: `feature/native-road-compiler`

### Summary

Added persistent native road centre-line colour and pattern overrides, automatic Workbench staging, continuous solid-line rendering, and Blender white material support.

### Git Commits

| Hash | Message |
|------|---------|
| `47efb78` | (see git log) |

### Status

[OK] **Completed**


## Session 35: Complete native lane separator styles

**Date**: 2026-08-17
**Task**: Complete native lane separator styles
**Branch**: `feature/native-road-compiler`

### Summary

Completed per lane-pair separator colour/pattern overrides, Workbench staging, Blender yellow material routing, and centre-line control clearance.

### Git Commits

| Hash | Message |
|------|---------|
| `bc04517` | (see git log) |

### Status

[OK] **Completed**


## Session 36: Complete native road marking semantics

**Date**: 2026-08-17
**Task**: Complete native road marking semantics
**Branch**: `feature/native-road-compiler`

### Summary

Added explicit double-yellow centre lines and per-side edge-line overrides; made all three marking classes selectable in the Chinese Road Workbench; synchronized Blender adapter coverage and verified Nantaizi native compile, quality gate, Blender/Cesium/preview manifests, and automated tests.

### Git Commits

| Hash | Message |
|------|---------|
| `9bb97d4` | (see git log) |

### Status

[OK] **Completed**


## Session 37: Complete rounded native junction verification

**Date**: 2026-08-18
**Task**: Complete rounded native junction verification
**Branch**: `feature/native-road-compiler`

### Summary

Recorded user-confirmed native Blender/Cesium/preview verification for rounded native junctions, checked off all acceptance criteria, and archived the completed 08-17-native-rounded-junctions task.

### Git Commits

| Hash | Message |
|------|---------|
| `e41bfd1` | (see git log) |
| `f7e71cf` | (see git log) |

### Status

[OK] **Completed**


## Session 38: Complete native traffic signal workflow

**Date**: 2026-08-18
**Task**: Complete native traffic signal workflow
**Branch**: `feature/native-road-compiler`

### Summary

Completed native traffic-signal ownership and Workbench editing. Added independent pole position, mast heading/reach, and face heading controls; removed native QGIS dependency; verified runtime preview, browser rendering, compile, tests, and quality gates. Archived native traffic signal and road compiler tasks.

### Git Commits

| Hash | Message |
|------|---------|
| `5accc0a` | (see git log) |

### Status

[OK] **Completed**


## Session 39: Complete native-only pipeline replacement

**Date**: 2026-08-18
**Task**: Complete native-only pipeline replacement
**Branch**: `feature/native-road-compiler`

### Summary

Made native road compilation the default provider and full-build stage set; decoupled package traffic signals and preview from QGIS/osm2streets, made diagnostics provider-aware, updated docs/specs/tests, and preserved explicit legacy reference/debug paths. Native road compile/check and all available Node tests passed. QGIS baseline remains tagged qgis-original-baseline-20260818.

### Git Commits

| Hash | Message |
|------|---------|
| `9e0e25a` | (see git log) |

### Status

[OK] **Completed**


## Session 40: Stabilize Fengshu native road compilation

**Date**: 2026-08-24
**Task**: Stabilize Fengshu native road compilation
**Branch**: `fengshu-er-road`

### Summary

Validated and committed the Fengshu Er Road native compilation fixes, including stale override tolerance, corrected unreferenced complex-junction sizing, updated OSM input, and focused road/traffic preview regression coverage.

### Git Commits

| Hash | Message |
|------|---------|
| `f1f829c` | (see git log) |

### Status

[OK] **Completed**


## Session 41: Use live V2X vehicle streams only

**Date**: 2026-08-24
**Task**: Use live V2X vehicle streams only
**Branch**: `fengshu-er-road`

### Summary

Replaced the Cesium preview's simulated vehicle route with authenticated OBU and target-vehicle V2X streams, converting GCJ-02 coordinates to WGS84 exactly once. Removed native traffic-simulation output, regenerated Fengshu Er Road preview, documented the no-fallback contract, and verified focused preview, V2X, budget, native-road, and signal tests.

### Git Commits

| Hash | Message |
|------|---------|
| `b7031f1` | (see git log) |

### Status

[OK] **Completed**


## Session 42: Freeze native road parity baseline

**Date**: 2026-08-25
**Task**: Freeze native road parity baseline
**Branch**: `experiment/road-compiler-rethink`

### Summary

Completed and archived Phase 0: documented native-road-package/v1, added strict road parity snapshots and two valid-area baselines, excluded abandoned hanyang-block, and verified deterministic recompilation including signal regeneration.

### Git Commits

| Hash | Message |
|------|---------|
| `e7bc7f8` | (see git log) |

### Status

[OK] **Completed**


## Session 43: Extract road compiler package boundary

**Date**: 2026-08-25
**Task**: Extract road compiler package boundary
**Branch**: `experiment/road-compiler-rethink`

### Summary

Completed and archived Phase 1: moved native road compiler, checks, workbench, signal schema, OSM parser, and fixtures into packages/road-compiler; introduced RoadCompilerInput mapping; verified two-area parity and a privileged full Fengshu build.

### Git Commits

| Hash | Message |
|------|---------|
| `73707da` | (see git log) |
| `d5c58b5` | (see git log) |
| `f542a64` | (see git log) |
| `284d3db` | (see git log) |
| `2469cfd` | (see git log) |

### Status

[OK] **Completed**


## Session 44: Complete external road compiler split

**Date**: 2026-08-26
**Task**: Complete external road compiler split
**Branch**: `experiment/road-compiler-rethink`

### Summary

Split road compiler into private road-compiler repository with history, pushed v0.1.2, migrated host to exact-tag CLI consumption, removed in-host package, passed regression tests and two-area parity.

### Git Commits

| Hash | Message |
|------|---------|
| `5cde080` | (see git log) |
| `7d4b3b5` | (see git log) |

### Status

[OK] **Completed**


## Session 45: Complete manifest-driven native road rendering

**Date**: 2026-08-26
**Task**: Complete manifest-driven native road rendering
**Branch**: `experiment/road-compiler-rethink`

### Summary

Published compiler v0.2.2, switched Blender to validated native-road manifests, proved debug-probe extensibility, and verified Blender parity for fengshu-er-road.

### Git Commits

| Hash | Message |
|------|---------|
| `6201270` | (see git log) |

### Status

[OK] **Completed**