Connect schematic components to focused PCB view

[0hmX]

Summary

Completes schematic-to-PCB component navigation in CircuitJsonPreview.

• handles schematic navigation callbacks at the tab-owning host boundary
• stores a monotonically increasing PCB focus request so repeated navigation retriggers focus
• switches through the existing active-tab setter, preserving onActiveTabChange
• forwards controlled focus requests to PCBViewer
• exposes navigation only when the PCB tab is available
• adds a fixture with widely separated top- and bottom-layer components
• covers tab switching and repeat-request behavior

PR chain

Part 3 of 3 — integration PR.

1. tscircuit/schematic-viewer#262 — navigation callback
2. tscircuit/pcb-viewer#963 — controlled component focus
3. This PR: runframe tab and focus integration

Dependency order

This draft depends on parts 1 and 2 being merged and released. After those releases, update runframe's @tscircuit/schematic-viewer and @tscircuit/pcb-viewer versions before marking this ready for review.

Validation

Validated with the two upstream worktrees linked locally:

• bun test — 47 passed
• formatting check
• TypeScript check
• package and standalone builds
• live fixture verified for top- and bottom-layer focus with zero browser console errors

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Project	Deployment	Actions	Updated (UTC)
runframe	Ready	Preview	Aug 20, 2026 3:11pm

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