Code-Schnipsel: neue Funktion unter Werkzeuge

backend/src/db.js

@@ -406,4 +406,40 @@ if (!db.prepare("SELECT name FROM sqlite_master WHERE type='table' AND name='cal
   `);
 }
 
+// ── Code-Schnipsel ────────────────────────────────────────────────────────────
+if (!db.prepare("SELECT name FROM sqlite_master WHERE type='table' AND name='snippets'").get()) {
+  db.exec(`
+    CREATE TABLE snippets (
+      id          INTEGER PRIMARY KEY AUTOINCREMENT,
+      user_id     INTEGER NOT NULL REFERENCES users(id) ON DELETE CASCADE,
+      title       TEXT NOT NULL,
+      code        TEXT NOT NULL DEFAULT '',
+      language    TEXT NOT NULL DEFAULT 'text',
+      description TEXT NOT NULL DEFAULT '',
+      created_at  DATETIME DEFAULT NULL,
+      updated_at  DATETIME DEFAULT NULL
+    );
+    CREATE TABLE snippet_tags (
+      snippet_id  INTEGER NOT NULL REFERENCES snippets(id) ON DELETE CASCADE,
+      tag         TEXT NOT NULL,
+      PRIMARY KEY (snippet_id, tag)
+    );
+    CREATE TABLE snippet_history (
+      id          INTEGER PRIMARY KEY AUTOINCREMENT,
+      snippet_id  INTEGER NOT NULL REFERENCES snippets(id) ON DELETE CASCADE,
+      code        TEXT NOT NULL,
+      language    TEXT NOT NULL DEFAULT 'text',
+      saved_at    DATETIME DEFAULT NULL
+    );
+    CREATE TABLE snippet_shares (
+      id          INTEGER PRIMARY KEY AUTOINCREMENT,
+      snippet_id  INTEGER NOT NULL REFERENCES snippets(id) ON DELETE CASCADE,
+      shared_by   INTEGER NOT NULL REFERENCES users(id) ON DELETE CASCADE,
+      shared_with INTEGER NOT NULL REFERENCES users(id) ON DELETE CASCADE,
+      created_at  DATETIME DEFAULT NULL,
+      UNIQUE(snippet_id, shared_with)
+    )
+  `);
+}
+
 module.exports = db;