Improve net-aware decoupling cap layout

[stainlu]

Summary

• preserve allowed VCC/GND net membership when decoupling-cap-only partitions inherit those nets through strong connections to the main chip
• add a deterministic fast path for partitionType === "decoupling_caps" that orders caps by main-pin coordinates and spaces by the full body + pin envelope
• prefer the positive-voltage-connected external main pin for ordering when both cap pins are strongly connected, with deterministic natural-id fallback behavior
• pin circuit-to-svg@0.0.345 so the existing full Bun test suite can load the schematic simulation SVG export

/claim #15

Verification

• npx --yes bun test tests/ChipPartitionsSolver.test.ts tests/PackInnerPartitionsSolver/SingleInnerPartitionPackingSolver.test.ts
• npx --yes bun test
• npx --yes bun x tsc --noEmit
• npx --yes bun run format:check
• npx --yes bun run build
• git diff --check

AI-assisted with Codex; I reviewed the patch and verification locally.

[vercel]

@stainlu is attempting to deploy a commit to the tscircuit Team on Vercel.

A member of the Team first needs to authorize it.

[imrishabh18]

@stainlu We have stopped issuing bounties, but we do sponsor people for the contributions (refer our docs for more info).

You need to add test with visualization snapshots for me to know if this even works!