feat(bots): built-in bot runner + steamfree from UI

- BotRunner: server-side goroutine manager for built-in bot types
- steamfree bot embedded in server (polls Steam API, posts free games)
- bot_type + config JSONB columns on bots table
- Create/Update/Delete handlers manage runner lifecycle
- GET /bots/types returns registered bot types
- BotManager: type selector dropdown + config fields on create
- No SSH needed: create a 'Steam Free Games' bot from /bots/manage

web/src/stores/bot.ts

@@ -6,6 +6,8 @@ export interface Bot {
   name: string;
   avatar: string | null;
   description: string;
+  bot_type: string;
+  config: Record<string, unknown>;
   owner_id: string;
   created_at: string;
 }
@@ -31,13 +33,15 @@ export interface StoreBot {
 interface BotState {
   bots: Bot[];
   storeBots: StoreBot[];
+  botTypes: string[];
   loading: boolean;
   error: string | null;
 
   fetchBots: () => Promise<void>;
   fetchStoreBots: () => Promise<void>;
-  createBot: (name: string, description: string) => Promise<Bot & { token: string }>;
-  updateBot: (id: string, data: { name?: string; description?: string; avatar?: string }) => Promise<Bot>;
+  fetchBotTypes: () => Promise<void>;
+  createBot: (name: string, description: string, botType?: string, config?: Record<string, unknown>) => Promise<Bot & { token: string }>;
+  updateBot: (id: string, data: { name?: string; description?: string; avatar?: string; bot_type?: string; config?: Record<string, unknown> }) => Promise<Bot>;
   deleteBot: (id: string) => Promise<void>;
   addToServer: (botId: string, serverId: string) => Promise<void>;
   removeFromServer: (botId: string, serverId: string) => Promise<void>;
@@ -52,6 +56,7 @@ interface BotState {
 export const useBotStore = create<BotState>((set) => ({
   bots: [],
   storeBots: [],
+  botTypes: [],
   loading: false,
   error: null,
 
@@ -81,10 +86,24 @@ export const useBotStore = create<BotState>((set) => ({
     }
   },
 
-  createBot: async (name, description) => {
+  fetchBotTypes: async () => {
+    try {
+      const types = await api.get<string[]>('/bots/types');
+      set({ botTypes: types });
+    } catch {
+      // silent
+    }
+  },
+
+  createBot: async (name, description, botType, config) => {
     set({ loading: true, error: null });
     try {
-      const result = await api.post<Bot & { token: string }>('/bots', { name, description });
+      const result = await api.post<Bot & { token: string }>('/bots', {
+        name,
+        description,
+        bot_type: botType || '',
+        config: config || {},
+      });
       set((state) => ({
         bots: [...state.bots, result],
         loading: false,