Add endpoint to register all bot servers to the federation

Create a POST endpoint `/api/federation/register-all` in `webServer.js` to upsert all servers the Discord client is connected to into the `federation_servers` table, using `guild_id` as the conflict target.

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aethex-bot/server/webServer.js

@@ -1381,6 +1381,55 @@ function createWebServer(discordClient, supabase, options = {}) {
     }
   });
   
+  // Admin endpoint to register all bot servers to federation
+  app.post('/api/federation/register-all', async (req, res) => {
+    if (!supabase) {
+      return res.status(503).json({ error: 'Database not available' });
+    }
+    
+    try {
+      const guilds = discordClient.guilds.cache;
+      const results = [];
+      
+      for (const [guildId, guild] of guilds) {
+        const serverData = {
+          guild_id: guildId,
+          guild_name: guild.name,
+          guild_icon: guild.iconURL({ size: 128 }),
+          owner_id: guild.ownerId,
+          member_count: guild.memberCount,
+          status: 'approved',
+          tier: 'free',
+          trust_level: 'bronze',
+          reputation_score: 0,
+          description: `Official AeThex server: ${guild.name}`,
+          joined_federation_at: new Date().toISOString()
+        };
+        
+        const { error } = await supabase
+          .from('federation_servers')
+          .upsert(serverData, { onConflict: 'guild_id' });
+        
+        results.push({
+          guild_id: guildId,
+          guild_name: guild.name,
+          success: !error,
+          error: error?.message
+        });
+      }
+      
+      res.json({ 
+        success: true, 
+        registered: results.filter(r => r.success).length,
+        failed: results.filter(r => !r.success).length,
+        results 
+      });
+    } catch (error) {
+      console.error('[Federation] Register all error:', error);
+      res.status(500).json({ error: 'Failed to register servers' });
+    }
+  });
+  
   app.get('/api/federation/applications', async (req, res) => {
     if (!supabase) {
       return res.status(503).json({ error: 'Database not available' });