Add deterministic decoupling capacitor layout

[LarsNB]

/claim #15

Summary

• add a deterministic layout path for partitionType === "decoupling_caps" partitions
• order capacitors by their external strongly-connected main-chip pins
• place decoupling caps in a clean row/column based on whether those pins sit on x-side or y-side chip edges
• lazy-load the LayoutPipeline06 debugger so tests can import its data fixture without pulling browser-only visualization dependencies
• add focused tests for vertical and horizontal decoupling-cap layouts

Tests

• bun test
• bun run format:check
• bun run build

[vercel]

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