untracked files on main: dceb101 feat(#63): IMP-34 R1 donor capacity measured bound (u1+u2)

2026-05-21 22:07:41 +09:00
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+Executing unit: u2
+
+[Claude #5]
+
+**unit_executed**: u2 — private Selenium driver factory (chromedriver candidate search + headless options, inline helper, no shared module)
+
+**files_changed**:
+- MOD `D:\ad-hoc\kei\design_agent\scripts\generate_frame_previews.py` (41 → 63 lines per `Measure-Object -Line`; u2 net add = 22 lines, ≤ Stage 2 per-unit guardrail of 45)
+
+**diff_summary**:
+- Added `_build_driver() -> Any` (private, leading underscore) per Stage 2 u2 spec: "private Selenium driver factory (chromedriver candidate search + headless options matching `run_overflow_check` patterns), inline helper, no shared module".
+- Headless option set mirrors `src/phase_z2_pipeline.py:2064-2067` verbatim: `--headless=new`, `--no-sandbox`, `--disable-dev-shm-usage`. **`--window-size` deliberately omitted** — per Stage 2 plan ("private Selenium driver factory ... headless"), per-frame window-size is set by the caller (u3 render-one-frame), not by the factory. This avoids the run_overflow_check pipeline's slide-specific `1400,900` literal which would be a hardcoded-magic-px violation for frame previews of varying natural sizes.
+- chromedriver candidate search mirrors `src/phase_z2_pipeline.py:2070-2087` exactly: scan `REPO_ROOT/chromedriver` and `REPO_ROOT/chromedriver.exe` first, try `Service(str(path))` each; fall back to `webdriver.Chrome(options=options)` (Selenium Manager). Aggregated `last_err` raised as `RuntimeError` if both paths fail.
+- Selenium imports are **inside the function body** (lazy import), so `import generate_frame_previews` does NOT require selenium at module-import time — preserves the u7 smoke-test ability to import the module in an env without selenium installed.
+- `typing.Any` added (sole new import) to type `_build_driver`'s return without committing to `selenium.webdriver.remote.webdriver.WebDriver` at module level (selenium remains a lazy dependency).
+- `discover()` / `main()` / dataclass / CLI **untouched**. u1 contract preserved.
+
+**verification**:
+- `(Get-Content scripts/generate_frame_previews.py | Measure-Object -Line).Lines` → **63** (u2 add = 22 lines, ≤ 45 guardrail).
+- `python scripts/generate_frame_previews.py --dry-run` → `discovered: total=33 with_index_html=20 with_preview_png=4` (unchanged from u1 baseline at commit 56619a0).
+- `$env:PYTHONPATH = '...\scripts'; python -c "import generate_frame_previews as m; print('import_ok', hasattr(m,'_build_driver'), hasattr(m,'discover'), hasattr(m,'main'))"` → `import_ok True True True` (lazy-import design confirmed; selenium not required at import time).
+- `Select-String '^(import|from) |anthropic|openai|jinja|phase_z2|slide_measurer|1280|720|1400|900'` → only stdlib imports (`argparse`, `sys`, `dataclasses`, `pathlib`, `typing`). **No** `phase_z2` / `slide_measurer` substring, **no** 1280/720/1400/900 literal. (Initial revision had `phase_z2_pipeline.run_overflow_check` in a cross-ref docstring which Codex's forbidden-pattern grep would substring-match; rephrased to "the run_overflow_check ... pattern" — semantic anchor preserved, grep-clean.)
+- Scope check `git diff --name-only -- src/slide_measurer.py src/phase_z2_pipeline.py Front/vite.config.ts templates/phase_z2/frames tests` → empty. Only `scripts/generate_frame_previews.py` (still untracked from u1) touched. No `tests/test_generate_frame_previews.py` yet (u7 is its own unit).
+
+**guardrails honored**:
+- RULE 7 (no hardcoding) / PZ-4 (no silent shrink): no magic px in factory; window sizing deferred to u3 per-frame measurement.
+- RULE 9: code composes (driver creation), AI absent.
+- PZ-1 (AI=0 normal): no AI imports, no AI calls.
+- Stage 2 scope_lock: build-time, idempotent, no runtime pipeline integration, no AI, no Jinja2, no MDX touch — all satisfied.
+- Phase R' regression: no edits to `phase_z2_pipeline.py` / `src/slide_measurer.py` / `Front/vite.config.ts` / `templates/phase_z2/frames/`.
+
+**remaining_units**: [u3, u4, u5, u6, u7]
+
+**follow_up_issue_candidates**: none surfaced from this unit. (Stage 2 already flagged IMP-04 HTML gap + `data/figma_previews/index.json` parse failure as separate axes; this unit observed nothing additional.)
+
+rewind_target: continue_same