feat: FlowDeck v0.2.0 — Kanban Gitea intégré

- Dashboard projets Gitea (user + orgs)
- Board Kanban 5 colonnes avec drag & drop (SortableJS)
- Sync bidirectionnelle colonnes ↔ labels Gitea
- Filtres milestone/label/assignee
- Notes Markdown par projet
- API REST (/api/health, /api/move, /api/col-mapping…)
- Colonnes custom, WIP limits
- Thème clair/sombre
- Cache Gitea TTL
- Docker + docker-compose
- Tests pytest
- Docs: README, ARCHITECTURE, CHANGELOG, ROADMAP

app/db.py

@@ -0,0 +1,79 @@
+"""FlowDeck — Database layer (SQLite with WAL mode)."""
+from __future__ import annotations
+
+import sqlite3
+from contextlib import contextmanager
+from pathlib import Path
+
+
+def get_db_path() -> Path:
+    from app.config import settings
+    return settings.db_path
+
+
+def init_db():
+    """Create tables if they don't exist."""
+    db_path = get_db_path()
+    db_path.parent.mkdir(parents=True, exist_ok=True)
+
+    with get_conn() as conn:
+        conn.execute("PRAGMA journal_mode=WAL")
+        conn.execute("PRAGMA foreign_keys=ON")
+        conn.executescript("""
+            CREATE TABLE IF NOT EXISTS boards (
+                id INTEGER PRIMARY KEY AUTOINCREMENT,
+                project_owner TEXT NOT NULL,
+                project_name TEXT NOT NULL,
+                columns_json TEXT NOT NULL DEFAULT '["Backlog","À faire","En cours","Révision","Terminé"]',
+                wip_limits_json TEXT DEFAULT '{}',
+                created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
+                UNIQUE(project_owner, project_name)
+            );
+
+            CREATE TABLE IF NOT EXISTS cards (
+                id INTEGER PRIMARY KEY AUTOINCREMENT,
+                board_id INTEGER NOT NULL REFERENCES boards(id),
+                gitea_issue_id INTEGER,
+                column_name TEXT NOT NULL DEFAULT 'Backlog',
+                position INTEGER NOT NULL DEFAULT 0,
+                priority TEXT DEFAULT 'Medium',
+                due_date TEXT,
+                created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
+                updated_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP
+            );
+
+            CREATE TABLE IF NOT EXISTS notes (
+                id INTEGER PRIMARY KEY AUTOINCREMENT,
+                project_owner TEXT NOT NULL,
+                project_name TEXT NOT NULL,
+                title TEXT NOT NULL DEFAULT 'Notes',
+                content TEXT NOT NULL DEFAULT '',
+                created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
+                updated_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
+                UNIQUE(project_owner, project_name, title)
+            );
+
+            CREATE TABLE IF NOT EXISTS col_mapping (
+                id INTEGER PRIMARY KEY AUTOINCREMENT,
+                board_id INTEGER NOT NULL REFERENCES boards(id),
+                column_name TEXT NOT NULL,
+                gitea_label TEXT NOT NULL,
+                close_issue BOOLEAN NOT NULL DEFAULT 0,
+                UNIQUE(board_id, column_name)
+            );
+        """)
+        conn.commit()
+
+
+@contextmanager
+def get_conn():
+    """Yield a SQLite connection (WAL mode, foreign keys on)."""
+    db_path = get_db_path()
+    conn = sqlite3.connect(str(db_path))
+    conn.row_factory = sqlite3.Row
+    conn.execute("PRAGMA journal_mode=WAL")
+    conn.execute("PRAGMA foreign_keys=ON")
+    try:
+        yield conn
+    finally:
+        conn.close()