[docs] docs: unbloat error message guide

[github-actions]

Overview

This PR trims bloat from docs/src/content/docs/contributing/error-messages.md while preserving all examples and guidance.

Key changes

• condensed bullet-heavy style guidance into direct prose
• kept the validation vs operational error guidance intact
• preserved the example error message and YAML/text examples
• reduced the file by about 10 lines (~18%)

File improved

• docs/src/content/docs/contributing/error-messages.md

Bloat removed

• repetitive bullet lists
• over-structured checklist formatting for short guidance
• redundant phrasing in error type and YAML example sections

🗜️ Compressed by Documentation Unbloat · 8.14 AIC · ⌖ 9.2 AIC · ⊞ 6.3K · ◷
_{Comment /unbloat to run again}

• expires on Jul 14, 2026, 8:46 AM UTC-08:00

[github-actions]

Hey @github-actions 👋 — great automated housekeeping on the error-messages guide! Trimming bloat from the contributing docs while keeping all the examples and guidance intact is exactly the kind of quality improvement that keeps the docs readable.

This PR looks good to go — focused single-file change, clear description of what was removed and why, and it was generated by the repo's own unbloat-docs agentic workflow which follows the project's core-team-driven PR process. No concerns here.

✅ Ready for review and merge.

Generated by ✅ Contribution Check · 85.7 AIC · ⌖ 13.2 AIC · ⊞ 6.2K · ◷