terminal plugin, card edit history, bump script

Terminal: in-app command line with 22 commands (Shift+T toggle).
Navigation, CRUD, search, view toggles, tab completion, history.

Card history: card_history table tracks field changes on every PATCH.
GET /api/cards/{id}/history endpoint. Terminal `history` command.

bump.sh: standalone version bump for config.php, electron/package.json,
website footer. dist.sh no longer bumps.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

src/Database.php

@@ -151,5 +151,19 @@ class Database
             self::$pdo->exec('ALTER TABLE buckets ADD COLUMN parent_id INTEGER DEFAULT NULL REFERENCES buckets(id)');
             self::$pdo->exec('CREATE INDEX IF NOT EXISTS idx_buckets_parent_id ON buckets(parent_id)');
         }
+
+        // Card edit history
+        self::$pdo->exec('
+            CREATE TABLE IF NOT EXISTS card_history (
+                id INTEGER PRIMARY KEY AUTOINCREMENT,
+                card_id INTEGER NOT NULL,
+                field TEXT NOT NULL,
+                old_value TEXT,
+                new_value TEXT,
+                changed_at TEXT NOT NULL DEFAULT CURRENT_TIMESTAMP,
+                FOREIGN KEY (card_id) REFERENCES cards(id) ON DELETE CASCADE
+            )
+        ');
+        self::$pdo->exec('CREATE INDEX IF NOT EXISTS idx_card_history_card ON card_history(card_id, changed_at DESC)');
     }
 }