Quieter start and build

[hey-august]

Other Changes Pull Request

Description

Several changes intended to make terminal output less noisy for start and build commands and prepare for migration.

Command	Output lines (Before)	Output lines (After)
start	2037	138
build	15209	12945

These changes are organized into content and functionality categories:

Content

Reduce noisy output by fixing long-ignored alt text warnings produced by the remark-plugin-a11y-checker.

Warning Type	Before	After
Alt text punctuation	104	0 ✅
"Screenshot of"	15	0 ✅
Alt text too long	4	0 ✅
Starts with "image"	2	0 ✅
Empty alt text	21	0 ✅
PNG/GIF format	83	0 ✅ (turned off)
Total	229	0

Functionality

Remarkable plugin:
Turned off image format check, so it longer warns about PNG/GIF images not being webp/svg.
Rationale: We avoid unnecessary images in general. Future tools may handle image optimization for us. It's not a priority at this time.

Docusaurus Guide Showcase plugin:

• Exclude more unwanted content types from checks:
  • **/_*.mdx, **/_*.md: Partial files
  • **/_common/**, **/_shared/**, **/_mermaid/**, **/_usecases/**, **/_sharedtables/**: Shared content directories
• Silence tag warnings

Type of Change

• Docusaurus update/maintenance
  • Dependency update
  • Configuration change
  • Plugin update
  • Bug fix
  • Style Change
• Performance improvement
• Refactoring
• Build process update
• Other (please specify):

Motivation and Context

start and build commands currently have very noisy outputs, with the following negative effects:

• Noisy outputs overwhelm standard scrollback buffers, polluting shell history
• It is token-inefficient to pipe command output into coding agents like Claude Code for debugging purposes

The warnings in these command outputs are, in many cases, valid accessibility issues that were trivial to solve with Claude.

Checklist:

• My changes follow the style guidelines of this project
• I have performed a self-review of my changes
• My changes generate no new warnings
• Builds successfully locally

Notes

• Run yarn start-fresh (not yarn start) to let plugin changes take effect
• The showcase plugin still logs "Processing file" lines (~124) - could be silenced in a follow-up

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Lighthouse	1 paths audited Performance: 38 (🟢 up 11 from production) Accessibility: 91 (no change from production) Best Practices: 92 (no change from production) SEO: 89 (no change from production) PWA: - View the detailed breakdown and full score reports

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