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fix(trello): robust output parser with 4 fallback strategies#345

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vincentgrobler merged 1 commit intomainfrom
fix/trello-parser-flexible-headings
Apr 9, 2026
Merged

fix(trello): robust output parser with 4 fallback strategies#345
vincentgrobler merged 1 commit intomainfrom
fix/trello-parser-flexible-headings

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@vincentgrobler vincentgrobler commented Apr 9, 2026

Description

Railway logs showed 11,063 chars reaching deliverTrello but '0 sections parsed' — the regex only matched # and ## headings, but LLMs often use ###, ####, bold, or no markdown headings at all.

Parser now tries 4 strategies in order:

  1. Markdown headings h1-h4 (#{1,4})
  2. Bold-line section headers (Section Name)
  3. Horizontal rule separators (---)
  4. Paragraph-based size splitting (for unstructured 2k+ output)

This guarantees any output over ~2000 chars gets split into multiple Trello cards regardless of the LLM's formatting style.

Related Issue

Type of Change

  • 🐛 Bug fix (non-breaking change that fixes an issue)
  • ✨ New feature (non-breaking change that adds functionality)
  • 💥 Breaking change (fix or feature that would cause existing functionality to change)
  • 📝 Documentation update
  • ♻️ Refactor (no functional changes)
  • 🧪 Test update

How Has This Been Tested?

  • Unit tests
  • Manual testing
  • Browser testing (specify browsers)

Screenshots (if applicable)

Checklist

  • My code follows the project's coding standards
  • I have run npm run lint and there are no errors
  • I have run npm run test and all tests pass
  • I have added tests for my changes (if applicable)
  • I have updated the documentation (if applicable)
  • My source files have AGPL licence headers
  • My changes generate no new TypeScript errors

Railway logs showed 11,063 chars reaching deliverTrello but '0 sections
parsed' — the regex only matched # and ## headings, but LLMs often use
###, ####, **bold**, or no markdown headings at all.

Parser now tries 4 strategies in order:
1. Markdown headings h1-h4 (#{1,4})
2. Bold-line section headers (**Section Name**)
3. Horizontal rule separators (---)
4. Paragraph-based size splitting (for unstructured 2k+ output)

This guarantees any output over ~2000 chars gets split into multiple
Trello cards regardless of the LLM's formatting style.
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Project Deployment Actions Updated (UTC)
crewform Ready Ready Preview, Comment Apr 9, 2026 1:16pm

@vincentgrobler vincentgrobler merged commit cb3636b into main Apr 9, 2026
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@vincentgrobler vincentgrobler deleted the fix/trello-parser-flexible-headings branch April 9, 2026 13:32
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