feat: Phase 0 — monorepo 骨架 + 全表迁移 + FastAPI/Next 骨架 + CI

- uv(workspace) + pnpm monorepo；docker-compose(pg+api+web)
- SQLAlchemy 16 MVP 表 + Alembic 初版迁移(无漂移，users stub)
- FastAPI 骨架：统一错误信封(带 request_id) + structlog + /jobs/:id + OpenAPI
- Next.js 骨架：纸感主题 token + OpenAPI→TS 客户端代码生成(gen:api)
- CI(ruff/mypy/pytest + pg service + alembic 漂移校验)
- 四份设计规格(PRODUCT/UX/ARCHITECTURE/DEV_PLAN) + CLAUDE.md

apps/api/ww_api/logging_config.py

@@ -0,0 +1,34 @@
+"""structlog 结构化日志（ARCH §9.3）。dev 走彩色 console，其余 JSON。"""
+
+from __future__ import annotations
+
+import logging
+
+import structlog
+from structlog.typing import Processor
+from ww_config import get_settings
+
+
+def configure_logging() -> None:
+    settings = get_settings()
+    shared: list[Processor] = [
+        structlog.contextvars.merge_contextvars,
+        structlog.processors.add_log_level,
+        structlog.processors.TimeStamper(fmt="iso"),
+    ]
+    renderer = (
+        structlog.processors.JSONRenderer()
+        if settings.log_json
+        else structlog.dev.ConsoleRenderer()
+    )
+    processors: list[Processor] = [*shared, renderer]
+    structlog.configure(
+        processors=processors,
+        wrapper_class=structlog.make_filtering_bound_logger(logging.INFO),
+        cache_logger_on_first_use=True,
+    )
+
+
+def get_logger(name: str = "ww") -> structlog.stdlib.BoundLogger:
+    logger: structlog.stdlib.BoundLogger = structlog.get_logger(name)
+    return logger