dynamic plugin system, toast notifications, board delete, gitea-sync plugin rewrite, granular locking fixes

packages/api/prisma/schema.prisma

@@ -459,3 +459,34 @@ model EditHistory {
   @@index([postId, createdAt])
   @@index([commentId, createdAt])
 }
+
+model Plugin {
+  id          String   @id @default(cuid())
+  name        String   @unique
+  version     String
+  description String?
+  author      String?
+  enabled     Boolean  @default(false)
+  dirPath     String
+  entryPoint  String   @default("index.js")
+  config       Json     @default("{}")
+  configSchema Json     @default("[]")
+  installedAt  DateTime @default(now())
+  updatedAt   DateTime @updatedAt
+
+  data PluginData[]
+}
+
+model PluginData {
+  id        String   @id @default(cuid())
+  pluginId  String
+  key       String
+  value     Json
+  createdAt DateTime @default(now())
+  updatedAt DateTime @updatedAt
+
+  plugin Plugin @relation(fields: [pluginId], references: [id], onDelete: Cascade)
+
+  @@unique([pluginId, key])
+  @@index([pluginId])
+}