feat: add implicit copper pour render phase

[imrishabh18]

Summary

• pin implicit-copper-pour-solver#8 at commit 47f9301
• use copper-pour-solver#85 so implicit clipping outlines can carry the physical PCB boundary separately
• run PcbImplicitCopperPourRender after routing and before PcbCopperPourRender
• convert each coarse implicit power-net region into a CopperPour component outline instead of inserting it as final Circuit JSON
• apply zero clearance where same-net implicit regions touch while preserving clearance at the physical board edge, different nets, traces, pads, and cutouts
• let the exact copper-pour solver compute the final BRep geometry and trace/component clearances
• make PCB DRC wait for both copper-pour phases
• keep the new phase behind _featureImplicitCopperPours during the initial rollout so existing circuits remain unchanged
• update the nRF52810 regression, enable the feature there, and assert that all generated pours are final brep shapes

Testing

• ./node_modules/.bin/tsc --noEmit
• bun run build
• bun run smoke-test:dist
• bun test tests/repros/repro-nrf52810-without-copper-pours/repro-nrf52810-without-copper-pours.test.tsx
• bun test tests/examples/example29-copper-pour.test.tsx tests/components/primitive-components/copperpour-thermal-reliefs.test.tsx tests/examples/example37-copper-pour-solver-emit.test.tsx
• visual inspection of the regenerated top and bottom nRF snapshots
• copper-pour-solver PR now supports fabrication note path/text color prop #85: all 49 tests, type-check, build, and CI checks pass

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Project	Deployment	Actions	Updated (UTC)
tscircuit-core-benchmarks	Ready	Preview	Aug 25, 2026 11:50am

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