Promote 0.0.0.dev3 from develop to main.

[onclefranck]

Included changes

• improve Markdown links and document navigation
• clean example fixture data to avoid real-world references
• align the cspell project dictionary with words actually used in the repo
• update package version to 0.0.0.dev3
• make the README pre-release warning version-agnostic

Validation

• local test suite passed: 251 passed
• release branch was merged into develop
• develop is now the source of truth for this promotion

Notes

0.0.0.dev3 remains an early pre-release intended for discovery and feedback, not production use.