📝 Investigation: S185: Why did the soccer club module generation complete on ...

Date: 2026-03-07
Time: 04:48:57 UTC
Session: gspace1-185.9
Agent: angular
Confidence: 96%
Status: ✅ Documented

📋 Decision Context

Question:

S185: Why did the soccer club module generation complete on backend but show nothing in Studio?

Task: S185: Investigate why module generation results didn't reach Studio UI

🎯 Decision Made

Chosen:

Three root causes identified: (1) Agent loop hit 50K token limit before generation completed — loop stopped, results orphaned. Fixed by increasing budgets to 300K/40iter/15min. (2) Code gen returned 0 files for all 5 modules — old 180s timeout was active because backend wasn't restarted after 360s fix. (3) No fallback mechanism for when agent loop stops before async generation completes — frontend only receives results via agent loop relay, not directly from generation pipeline.

Options Considered:

• No alternatives documented

💭 Reasoning

The generation session modgen-2cec8b03 completed successfully: 6/6 phases, 5 visual modules, quality score 70/100, 18 min duration, 46K tokens used internally. But the agent loop conversation (the Vitto chat) was already dead — it hit the 50K token ceiling (100K env × 0.5 moderate multiplier) after ~10 polls. The code gen timeout was still 180s because the backend wasn't restarted. The visual modules generated fine but code files (Path B, Angular code) all timed out. The 5 ModuleContext JSONs (Path A) are in the session result but were never delivered to the frontend because the agent loop was already stopped.

📁 Files Involved

• APIs/backend-vitto-api/src/app/module-generation/phases/execute.phase.ts
• APIs/backend-vitto-api/src/app/engine/vitto-engine.service.ts
• APIs/backend-vitto-api/src/app/strategy/cost-guard.service.ts

🔗 Related

• Decision ID: dev_1772858932062_4ls441c
• Session: 185
• Workspace: gspace1

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