fix(companion): pass DATABASE_URL/OLLAMA_URL to MCP stdio child explicitly

Don't rely on env inheritance/cwd-dotenv for the claude-spawned MCP server.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

lib/api/routes/companion.js

@@ -62,7 +62,9 @@ spacesScopedRouter.post('/turn',
     const send = (event, data) => res.write(`event: ${event}\ndata: ${JSON.stringify(data)}\n\n`);
 
     // Write a per-turn MCP config temp file declaring the companion stdio server.
-    // DB connection env is inherited from the void-server process — no creds needed here.
+    // The stdio child is spawned by `claude`; pass the DB/Ollama connection env
+    // explicitly so the tools work regardless of how claude propagates env to
+    // MCP children (don't rely on inheritance or cwd-based dotenv).
     const mcpConfigPath = join(tmpdir(), `void-mcp-${randomUUID()}.json`);
     const agentActor = {
       kind: 'agent',
@@ -78,7 +80,9 @@ spacesScopedRouter.post('/turn',
           env: {
             VOID_SPACE_ID: req.params.space_id,
             VOID_AGENT_JSON: JSON.stringify(agentActor),
-            VOID_VIEW_JSON: view ? JSON.stringify(view) : ''
+            VOID_VIEW_JSON: view ? JSON.stringify(view) : '',
+            DATABASE_URL: process.env.DATABASE_URL || '',
+            OLLAMA_URL: process.env.OLLAMA_URL || ''
           }
         }
       }