⚙️ Implementation: How to safely backfill platform field and related schema cha...

Date: 2026-03-02
Time: 21:02:50 UTC
Session: gspace1-165.13
Agent: architecture
Confidence: 95%
Status: ✅ Documented

📋 Decision Context

Question:

How to safely backfill platform field and related schema changes from Sessions 163-166?

Task: Audit and fix all DB migration scripts from sessions 163-166

🎯 Decision Made

Chosen:

Single comprehensive migration script covering both databases (ai-mcp-dev + vitto-mind) with 6 steps: prefix extraction, context.platform copy, unknown classification for orphans, handoff defaults, index creation, and corrections decayProtected fix

Options Considered:

• No alternatives documented

💭 Reasoning

Original script had 4 bugs: (1) CJS require of ESM env-loader, (2) hardcoded DB name, (3) blindly defaulting unknown decisions to 'cursor', (4) missing vitto-mind backfill for decayProtected. Rewrote with proper ESM imports, dual-database support, graceful index conflict handling, and accurate dry-run counting. Key insight: most schema fields (consolidated, persona fields, execution-trace fields) use $ne:true queries or have Mongoose defaults — they don't need backfill. Only platform field and corrections decayProtected were real data issues.

📁 Files Involved

• tools/scripts/database/backfill-platform-field.js

🔗 Related

• Decision ID: dev_1772485370820_nji67lt
• Session: 165
• Workspace: gspace1

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