Initial commit: add FastAPI MVP (모프) and existing web app

Includes FastAPI+Jinja2+HTMX+SQLite implementation with seed categories, plus deployment templates.

Co-authored-by: Cursor <cursoragent@cursor.com>

models.py

@@ -0,0 +1,89 @@
+"""
+models.py
+
+요구사항의 테이블을 SQLAlchemy ORM 모델로 정의합니다.
+
+테이블:
+- users
+- categories
+- prompts
+- likes
+
+핵심 포인트:
+- likes에는 (prompt_id, user_identifier) 유니크 제약을 걸어 "중복 좋아요"를 DB 레벨에서도 방지합니다.
+- 프롬프트 검색은 title/content LIKE로 구현합니다(초경량 MVP 목적).
+- 나중에 로그인(계정/세션)을 붙이기 쉽도록 users 테이블을 별도로 유지합니다.
+"""
+
+from __future__ import annotations
+
+from datetime import datetime
+
+from sqlalchemy import DateTime, ForeignKey, Index, Integer, String, Text, UniqueConstraint, func
+from sqlalchemy.orm import DeclarativeBase, Mapped, mapped_column, relationship
+
+
+class Base(DeclarativeBase):
+    pass
+
+
+class User(Base):
+    __tablename__ = "users"
+
+    id: Mapped[int] = mapped_column(Integer, primary_key=True, autoincrement=True)
+    nickname: Mapped[str] = mapped_column(String(40), unique=True, index=True, nullable=False)
+    created_at: Mapped[datetime] = mapped_column(DateTime(timezone=True), server_default=func.now(), nullable=False)
+
+
+class Category(Base):
+    __tablename__ = "categories"
+
+    id: Mapped[int] = mapped_column(Integer, primary_key=True, autoincrement=True)
+    name: Mapped[str] = mapped_column(String(40), unique=True, nullable=False)
+    slug: Mapped[str] = mapped_column(String(60), unique=True, index=True, nullable=False)
+
+    prompts: Mapped[list["Prompt"]] = relationship(back_populates="category")
+
+
+class Prompt(Base):
+    __tablename__ = "prompts"
+
+    id: Mapped[int] = mapped_column(Integer, primary_key=True, autoincrement=True)
+    title: Mapped[str] = mapped_column(String(120), index=True, nullable=False)
+    content: Mapped[str] = mapped_column(Text, nullable=False)
+    description: Mapped[str | None] = mapped_column(Text, nullable=True)
+
+    category_id: Mapped[int] = mapped_column(ForeignKey("categories.id"), index=True, nullable=False)
+
+    # MVP에서는 로그인 없이 nickname 문자열로 작성자를 기록합니다.
+    author_nickname: Mapped[str] = mapped_column(String(40), index=True, nullable=False)
+
+    created_at: Mapped[datetime] = mapped_column(DateTime(timezone=True), server_default=func.now(), index=True, nullable=False)
+    copy_count: Mapped[int] = mapped_column(Integer, default=0, nullable=False)
+
+    category: Mapped["Category"] = relationship(back_populates="prompts")
+    likes: Mapped[list["Like"]] = relationship(back_populates="prompt", cascade="all, delete-orphan")
+
+    __table_args__ = (
+        # 정렬/필터가 잦은 필드 위주로 인덱스(SQLite에서도 도움).
+        Index("ix_prompts_category_created", "category_id", "created_at"),
+    )
+
+
+class Like(Base):
+    __tablename__ = "likes"
+
+    id: Mapped[int] = mapped_column(Integer, primary_key=True, autoincrement=True)
+    prompt_id: Mapped[int] = mapped_column(ForeignKey("prompts.id"), index=True, nullable=False)
+
+    # 쿠키 UUID 또는 IP 기반 식별자를 해시한 값(개인정보 최소화)
+    user_identifier: Mapped[str] = mapped_column(String(64), index=True, nullable=False)
+
+    created_at: Mapped[datetime] = mapped_column(DateTime(timezone=True), server_default=func.now(), nullable=False)
+
+    prompt: Mapped["Prompt"] = relationship(back_populates="likes")
+
+    __table_args__ = (
+        UniqueConstraint("prompt_id", "user_identifier", name="uq_likes_prompt_user"),
+    )
+