Initial commit: clean project structure

- Backend: FastAPI + SQLAlchemy + Celery (Python 3.11+)
- Frontend: Vue 3 + TypeScript + Pinia + Tailwind
- Admin Frontend: separate Vue 3 app for management
- Docker Compose: 9 services orchestration
- Specs: design prototypes, memory system PRD, product roadmap

Cleanup performed:
- Removed temporary debug scripts from backend root
- Removed deprecated admin_app.py (embedded UI)
- Removed duplicate docs from admin-frontend
- Updated .gitignore for Vite cache and egg-info

backend/pyproject.toml

@@ -0,0 +1,46 @@
+[project]
+name = "dreamweaver"
+version = "0.1.0"
+description = "AI 驱动的儿童故事生成应用"
+requires-python = ">=3.11"
+dependencies = [
+    "fastapi>=0.115.0",
+    "uvicorn[standard]>=0.32.0",
+    "sqlalchemy[asyncio]>=2.0.0",
+    "asyncpg>=0.30.0",
+    "pydantic>=2.0.0",
+    "pydantic-settings>=2.0.0",
+    "python-jose[cryptography]>=3.3.0",
+    "cryptography>=43.0.0",
+    "httpx>=0.28.0",
+    "alembic>=1.13.0",
+    "cachetools>=5.0.0",
+    "tenacity>=8.0.0",
+    "structlog>=24.0.0",
+    "sse-starlette>=2.0.0",
+    "celery>=5.4.0",
+    "redis>=5.0.0",
+    "openai>=1.0.0",
+]
+
+[project.optional-dependencies]
+dev = [
+    "pytest>=8.0.0",
+    "pytest-asyncio>=0.24.0",
+    "pytest-cov>=4.0.0",
+    "aiosqlite>=0.20.0",
+    "ruff>=0.8.0",
+]
+
+[tool.setuptools.packages.find]
+include = ["app*"]
+
+[tool.ruff]
+line-length = 100
+target-version = "py311"
+
+[tool.ruff.lint]
+select = ["E", "F", "I", "N", "W"]
+
+[tool.pytest.ini_options]
+asyncio_mode = "auto"