add JLCPCB footprint autocomplete

[techmannih]

Summary

• add a generator for lib/generated/jlcpcb-autocomplete.ts using the public jlcsearch API
• export the generated JLCPCB autocomplete path type and include it in FootprintProp
• allow jlcpcb: footprint selectors in pcbSx and update the footprint autocomplete type test
• add the package script needed to regenerate the JLCPCB autocomplete dataset
• keep the generator output Biome-clean so the generated file passes formatting checks

Why

JLCPCB footprint source strings were missing from the typed autocomplete surface, so consumers could not get type-safe autocomplete for jlcpcb: footprint references.

Impact

Consumers can now use jlcpcb:C... footprint references with autocomplete and type support across footprint props and the matching pcbSx selector path.

Validation

• bun scripts/generate-component-types.ts
• bun scripts/generate-manual-edits-docs.ts
• bun scripts/generate-readme-docs.ts
• bun scripts/generate-props-overview.ts
• bun scripts/generate-jlcpcb-autocomplete.ts
• bun test
• bun run typecheck
• bun run format:check

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[seveibar]

be EXTREMELY CAREFUL- if too many strings are added all autocomplete breaks. Test autocomplete to make sure you didn't break it

[techmannih]

There are no too many strings now. There are actually fewer autocomplete strings than in KiCad.

[tscircuitbot]

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