Add uniqueness search section

[konard]

Summary

Fixes #27.

Adds a new statement uniqueness workflow that searches detected statements across public sources and estimates whether prior exact or similar wording already exists. The issue title typo is supported as an alias, so /uniquness resolves to the new /uniqueness implementation.

What Changed

• Added searchTextUniqueness() with default Wikimedia, OpenAlex, Crossref, and DuckDuckGo Instant Answer source adapters.
• Added CLI commands uniqueness and uniquness, plus HTTP GET/POST /uniqueness and GET/POST /uniquness routes.
• Added a static web Uniqueness page with statement coloring, summary metrics, source matches, Markdown output, and Links Notation output.
• Added page issue-report capture for uniqueness input, status, rendered output, matches, Markdown, and Links Notation.
• Captured issue requirements, API/CORS research, source probes, and solution notes under docs/case-studies/issue-27.
• Added a minor changeset for the new public API and web/CLI/server surface.

Reproduction

Before this PR, there was no /uniquness or /uniqueness section, API, CLI command, or server route for checking whether statements already appear in public works.

To verify the fix locally:

1. Run npm start and request http://127.0.0.1:3000/uniqueness?input=Earth%20orbits%20the%20Sun.&format=markdown.
2. Run node src/cli.js uniquness --input "Earth orbits the Sun." --format markdown to verify the issue-title typo alias.
3. Serve the static app and open web/#/uniqueness, then click Search.

Screenshot

Testing

• node --test tests/issue-27.test.js
• npm test
• npm run check
• bun test
• deno test --allow-read
• scripts/check-file-line-limits.sh
• git diff --check
• Playwright browser verification for web/#/uniqueness with mocked public API responses, screenshot capture, and zero browser console errors/warnings.

[konard]

Working session summary

Implemented and pushed PR 32: #32

Added the /uniqueness section with /uniquness compatibility alias across library API, CLI, HTTP server, and static web UI. The PR also includes source adapters for Wikimedia/OpenAlex/Crossref/DuckDuckGo, issue-27 case-study docs and CORS probe data, a committed UI screenshot, a changeset, and regression tests for exact matches plus noisy unrelated provider results.

Verification passed locally:
node --test tests/issue-27.test.js, npm test, npm run check, bun test, deno test --allow-read, scripts/check-file-line-limits.sh, git diff --check, plus Playwright UI verification.

PR is ready for review, worktree is clean, and fresh CI passed on head 1f08550:

• Checks and release: https://github.com/link-assistant/meta-expression/actions/runs/25630007775
• Broken Link Checker: https://github.com/link-assistant/meta-expression/actions/runs/25630007779

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This summary was automatically extracted from the AI working session output.

[konard]

🤖 Solution Draft Log

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💰 Cost estimation:

• Model: GPT-5.5
• Provider: OpenAI
• Public pricing estimate: $24.903008

📊 Context and tokens usage:

• 468.4K / 1.1M (45%) input tokens, 60.5K / 128K (47%) output tokens

Total: (468.4K + 17.5M cached) input tokens, 60.5K output tokens, $24.903008 cost

🤖 Models used:

• Tool: OpenAI Codex
• Requested: gpt-5.5
• Model: GPT-5.5 (gpt-5.5)

📎 Log file uploaded as Repository (75318KB)

• View complete solution draft log

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Now working session is ended, feel free to review and add any feedback on the solution draft.

[konard]

🎉 Auto-merged

This pull request has been automatically merged by hive-mind.

• All CI checks have passed

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Auto-merged by hive-mind with --auto-merge flag