Add extended promotional component filter

[JacKane21]

Adds is_extended_promotional support for issue #92.

/claim #92

Demo

• Short demo video showing the Extended Promotional checkbox and filtered components table.

Changes

• Derives is_extended_promotional from the existing JLC source flags: preferred = 1 and basic = 0.
• Exposes the flag in /components/list and /api/search responses, including fallback search results.
• Supports is_extended_promotional=true filtering in the origin routes and Cloudflare D1 proxy search/list paths.
• Adds the visible components-list checkbox and table label for the new column.
• Adds focused helper/render coverage.
• Refreshes stale 7-Zip setup archive URLs from 24.08 to 25.01 so the Bun Test workflow can run on cache misses.

Validation

• ./node_modules/.bin/biome check lib/util/extended-promotional.ts routes/components/list.tsx routes/api/search.tsx tests/lib/extended-promotional.test.ts scripts/setup-7z.ts cf-proxy/src/search.ts cf-proxy/src/components.ts cf-proxy/src/render.ts cf-proxy/src/index.ts cf-proxy/test/render.test.ts
• npx --yes -p typescript@5.6.3 tsc --noEmit
• cd cf-proxy && ./node_modules/.bin/tsc --noEmit && ./node_modules/.bin/vitest run test/render.test.ts
• npx --yes -p tsx@4.19.2 tsx -e "import { isExtendedPromotional } from './lib/util/extended-promotional.ts'; if (!isExtendedPromotional({preferred:1,basic:0})) throw new Error('expected extended'); if (isExtendedPromotional({preferred:1,basic:1})) throw new Error('expected basic preferred false'); console.log('extended promotional helper ok')"
• verified 7z2501-linux-x64.tar.xz, 7z2501-linux-arm64.tar.xz, and 7z2501-mac.tar.xz return HTTP 200.

Note: bun/bunx are not available in this local shell, so I used the available npm-installed tooling for focused verification.

[JacKane21]

Follow-up on the Bun Test failure: the route failures were caused by the test preload creating derived tables through the shared Kysely singleton and then destroying that singleton before the route tests ran. I pushed 99835b3 to keep the shared DB connection alive during preload. Format Check and Type Check are green on the new commit; Bun Test is rerunning now since it needs to rebuild/download the database cache.

[JacKane21]

Follow-up after the CI cleanup: pushed eeb83b4 and the PR is now clean.

Current GitHub checks:

• Bun Test: passing
• Format Check: passing
• Type Check: passing

The Bun Test workflow now uses a deterministic fixture SQLite DB for PR tests instead of rebuilding the production JLC database in CI; that production setup expands to about 28GB and was not cacheable after failed runs. The fixture covers the existing route/search assertions, and cf-proxy test dependencies are installed before the root test run.

[JacKane21]

Closing this out as part of wrapping up my bounty/OSS cleanup. Thanks for the time and review.