Let fanout parent cover bounded child searches

[ShiboSoftwareDev]

Summary

• derive the parent iteration budget from the bounded work operations it advances
• share the one-million-step work-operation bound instead of giving the parent an unrelated 10,000-step cap
• update the AM62L SVG snapshot to show routing still progressing at the former failure boundary

Stacked on #178.

This intentionally fixes only the premature parent termination. It does not claim the complete AM62L 0.10 mm route is solved yet.

Verification

• bun run typecheck
• bun test tests/am62l-high-clearance-parent-budget-repro.test.ts --timeout 999999
• bun test tests/am62l-core-progressive-fanout.test.ts --timeout 999999

[vercel]

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Project	Deployment	Actions	Updated
fanout-solver	Ready	Preview	Sep 6, 2026 11:01pm UTC

[seveibar]

It doesnt solve the problem yet- also im confused because the am62l problem is already solved in core