[audit/nice-to-have] Improve discoverability (topics, awesome-list, badges)

[Displacedtex]

Priority: Nice-to-have

Problem

Repo surfaces poorly in GitHub search and lacks visible quality signals.

Recommendation

• Add topics via repo settings: awesome-list, machine-learning, deep-learning, computer-vision, nlp, project-ideas, curated-list.
• Add a badge row near the top of README: license, last-updated, link-check status (from [audit/critical] Add automated link-rot protection (CI) #3), contributors.
• Once [audit/critical] Resolve 500-vs-103 title ↔ content mismatch #1, [audit/critical] Add LICENSE file #2, [audit/critical] Add automated link-rot protection (CI) #3, [audit/critical] Add CONTRIBUTING.md with entry format spec #4, [audit/high] Categorize entries and add table of contents #5, [audit/high] Standardize link format (replace [👆] anchors) #7, [audit/high] Add .github/ governance scaffolding #8 are all done, the repo will meet the sindresorhus/awesome criteria. Consider submitting.

Acceptance criteria

• Topics set on the repo.
• Badge row visible in README.
• (Optional) Listed on sindresorhus/awesome.

Part of the repo audit backlog. Depends on most other issues.