Add component-focused PCB snapshots

[seveibar]

Summary

• add tsci snapshot --component-name <name>
• focus the PCB viewport on the named component and its courtyard
• imply --pcb-only and --show-courtyards
• include the component name in the snapshot filename so it cannot overwrite a full-board snapshot
• forward the option through both direct and worker-pool snapshot paths

Example

tsci snapshot --component-name L_3V3 ./dist/index/circuit.json

Test

• one visual SVG snapshot verifies the component-focused PCB output and courtyard

Validation

• bun test tests/cli/snapshot/snapshot-component-name.test.ts
• bunx tsc --noEmit
• bun run build
• git diff --check

[github-actions]

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[github-actions]

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