feat(search): add jlcpcb-prefixed identifiers to JLC search results

[techmannih]

Summary

This change makes JLCPCB search output use an explicit provider-prefixed identifier, similar to the existing KiCad search output.

Before:

$ tsci search --jlcpcb RP2040
1. RP2040 (C2040) - RP2040

After:

$ tsci search --jlcpcb RP2040
1. jlcpcb:C2040 - RP2040

Why

KiCad search results already return namespaced identifiers such as kicad:Resistor_SMD/R_0402_1005Metric, but JLCPCB results only exposed the LCSC part number inside descriptive text. That made the output less consistent and harder to copy directly into workflows that expect provider-prefixed component references.

What changed

• updated human-readable JLCPCB search output to print jlcpcb:C... first
• extracted JLCPCB identifier/label formatting into a dedicated helper for clearer behavior
• normalized existing C... or jlcpcb:C... values to a single output shape
• avoided repeating the same label twice when manufacturer and description are effectively identical
• added focused tests for both the formatter and the search --jlcpcb command output

User impact

• tsci search resistor still defaults to JLCPCB search
• tsci search --kicad resistor is unchanged
• tsci search --jlcpcb RP2040 now prints a copy-paste-friendly jlcpcb: identifier
• search behavior and JSON output are unchanged; this only affects the displayed CLI formatting

Validation

• bun test tests/cli/search/search-jlcpcb-format.test.ts tests/cli/search/search-jlcpcb-command.test.ts
• bunx @biomejs/biome check cli/search/register.ts cli/search/format-jlcpcb-search-result.ts tests/cli/search/search-jlcpcb-command.test.ts tests/cli/search/search-jlcpcb-format.test.ts

[chatgpt-codex-connector]

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[chatgpt-codex-connector]

Support importing the emitted JLC identifier

When someone copies the new leading token into tsci import jlcpcb:C2040, the import command's direct-part parser only matches raw C/numeric part numbers (^C?(\d+)$ in cli/import/parse-direct-lcsc-part-number.ts), so this identifier is not treated as the exact part it points to and falls through to a text search/no-results path. Since this line makes provider-prefixed IDs the primary copyable search result, either teach import to accept the same prefix or keep the emitted token in an importable form.

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