Investigate stricter greedy routing and bidirectional search

[AnasSarkiz]

Draft: these search changes are no longer a dependency of the pedometer fix in tscircuit/tscircuit-autorouter#2548. With the narrowed rectdiff fix, the original tiny-hypergraph pin c1043b3 completes all 1,106 pedometer high-density regions.

This branch changes hard-crossing acceptance, whole-route search direction, reripping, duplicated-port placement, and shared capacity. The combined autorouter revision using it regressed dataset 18 completion and runtime; these broader changes need independent validation before further review.

The branch is retained for investigation and is based on fix/preload-preservation-on-current-pin. Its earlier unit-test results do not establish downstream routing quality or performance.

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Project	Deployment	Actions	Updated
tiny-hypergraph	Ready	Preview	Sep 11, 2026 6:03pm UTC

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