# Lane C log — append-only, newest at bottom

Format per session:

    ## <date> session N
    DONE: …
    DECISIONS: …
    BLOCKED/REQUESTS: …
    NEXT: …

## 2026-07-18 session 1
DONE: M1 code-complete. Commit bb85eef.
- `requirements.txt` (fastapi, uvicorn only); `.gitignore` += `.venv/`.
- `scenegod/server.py` single file: statics (`/` no-store placeholder,
  `/web/{path}` short-cache, path-guarded), `/assets/tree` (5s cache,
  per-category grouping), `/assets/file` (traversal-guarded), `/scenes`
  CRUD with atomic write + slugify + `validate_scene`, render endpoints
  (begin/frame accept + save; end/status/out 501 until M3).
- `scripts/test_server.py`: 5 groups green (tree grouping, file stream,
  4 traversal attempts rejected, scene round-trip w/ slugify, 5 validation
  failures + 1 fade-overlap-allowed). `OK: 5 test groups passed`.
DECISIONS:
- System python3 is 3.14 (fastapi present but pydantic missing); made a
  `.venv` on python3.11 per CLAUDE.md stack rule. Tests + server use
  `.venv/bin/python`. `.venv/` gitignored.
- `web/` is under `scenegod/web/` per PLAN §2 (not repo root) — `WEB`
  points there; Lane A/B statics resolve via `/web/{path}`.
- Asset grouping: per-category primary ext set (models for chars/anims/
  props, images for backdrops, audio for audio). Non-primary image sharing
  a stem → `thumb`, not a `format`. `path` prefers glb else first model.
  Entries with no primary format dropped (thumb-only stems aren't assets).
- Clip-overlap check: violation if `next.start < a.end - a.fade`, where
  `a.end = start + (out-in)*loop`. Fade-region overlap allowed.
BLOCKED/REQUESTS: none.
NEXT: M2 (when unlocked): scene-validation hardening + asset thumbnails
endpoint. M3 render pipeline (ffmpeg encode + web/render.js) is designed in
C-server.md §C5, endpoints already stubbed — implement at SYNC-2/M3.