Bugfix: S185: Why did the completed module generation not persist an...

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🐛 Bugfix: S185: Why did the completed module generation not persist an...

Date: 2026-03-07
Time: 05:00:09 UTC
Session: gspace1-185.10
Agent: backend
Confidence: 97%
Status: ✅ Documented

📋 Decision Context

Question:

S185: Why did the completed module generation not persist anything to the database or render in Studio?

Task: S185: Fix module generation not persisting results

🎯 Decision Made

Chosen:

Root cause: DEPLOY phase was skipped because spaceId/universeId were null. The LLM called start_module_generation without passing spaceId (tool description said 'optional'). Fix: (1) Extended tool execution context with spaceId, passed from VittoEngineService through AgentLoop to ToolRegistry. (2) start_module_generation now falls back to context.spaceId when LLM doesn't pass it. (3) Default outputMode changed from 'visual' to 'both' so code files are generated alongside visual modules.

Options Considered:

  1. Make spaceId required in tool description (LLM might still not pass it)
  2. Inject spaceId from execution context as fallback (chosen - reliable, LLM-independent)
  3. Hard-code spaceId resolution in the tool handler (brittle)

💭 Reasoning

The 6-phase pipeline completed successfully (5 modules, quality 70) but the DEPLOY phase (phase 7) has a guard: if (!spaceId || !universeId) skip. The DEPLOY phase is responsible for: persisting modules to backend-ai-api, registering them in the universe tree, writing generated files to disk. Without it, the generation results exist only in memory (ModuleGenSession) and are lost on backend restart. The spaceId IS available in VittoEngineService.runConversationalLoop() but was never threaded through to the tool execution context. The tool description marking spaceId as 'optional' meant the LLM consistently omitted it.

📁 Files Involved

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