feat: implement lootdrop management endpoints and fix class api types

docs/api.md

@@ -350,6 +350,36 @@ List economy transactions.
 
 ---
 
+---
+
+## Lootdrops
+
+### `GET /api/lootdrops`
+List lootdrops (default limit 50, sorted by newest).
+
+| Query Param | Type | Description |
+|-------------|------|-------------|
+| `limit` | number | Max results (default: 50) |
+
+**Response:** `{ "lootdrops": [...] }`
+
+### `POST /api/lootdrops`
+Spawn a lootdrop in a channel.
+
+**Body:**
+```json
+{
+  "channelId": "1234567890",
+  "amount": 100,
+  "currency": "Gold"
+}
+```
+
+### `DELETE /api/lootdrops/:messageId`
+Cancel and delete a lootdrop.
+
+---
+
 ## Quests
 
 ### `GET /api/quests`