Move Composio, logo.dev and Antigravity keys into Settings

The three third-party keys were hardcoded or read from the environment.
Operators now enter them in Settings > Integrations; they are stored
encrypted in the app-wide integration_keys table (migration 058).
An agent holding connector grants fails loudly when no Composio key is
saved. The goal-review test no longer depends on absolute dates.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

src/main/services/task-execution-service.ts

@@ -151,7 +151,7 @@ export class TaskExecutionService {
         .toolkitsForAgent(orgId, agent.id)
         .map(connectorDisplayName);
       const language = this.appLanguage();
-      const externalTools = await loadComposioTools(this.db, orgId, agent.id);
+      const externalTools = await loadComposioTools(this.db, this.providers.integrationKeys, orgId, agent.id);
       // Watermark for the reply-delivery check below: anything the agent posts
       // into the source thread from here on counts as its reply.
       const runStartedAt = new Date().toISOString();