Pivot agentic component specs and align implementations

[Jason Morse (JasonVMo)]

Summary

• replace copied component source specs with reviewed React Native contracts backed by pinned Flex Marketplace and x3 provenance, source locks, and authenticated drift reporting
• resolve ten component-local defects and add shared focus-modality and phase-locked animation infrastructure
• add TabList with controlled and uncontrolled selection, roving focus, orientation-aware navigation, disabled-item skipping, and native accessibility metadata
• retain repaired divergence IDs as resolved contract history while leaving platform-validation and separately reviewed API proposals deferred

Validation

• yarn lage buildci --no-cache — 160 tasks succeeded
• authenticated spec-source refresh against the immutable release pin

Fixes #4252

[github-actions]

Bundle size report

Tree-shaken production Metro bundles. Component costs are relative to their platform shell; shell costs are absolute.

Platform	Scenario	Baseline cost	Current cost	Cost delta	Change	Gzip delta	Module delta
macos	shell	801.3 KiB	801.3 KiB	0.0 KiB	0.00%	0.0 KiB	+0
macos	components-button	50.1 KiB	50.2 KiB	+0.1 KiB	+0.26%	+0.0 KiB	+2
macos	components-catalog	267.3 KiB	273.3 KiB	+6.0 KiB	+2.24%	+2.1 KiB	+9
macos	design-theme-state	33.3 KiB	33.4 KiB	+0.1 KiB	+0.40%	+0.1 KiB	+2
macos	design-theme-state-legacy-source	35.3 KiB	35.5 KiB	+0.1 KiB	+0.38%	+0.0 KiB	+2
macos	design-legacy-theme-from-flex	100.2 KiB	100.4 KiB	+0.1 KiB	+0.13%	+0.1 KiB	+2
windows	shell	810.2 KiB	810.2 KiB	0.0 KiB	0.00%	0.0 KiB	+0
windows	components-button	50.0 KiB	50.1 KiB	+0.1 KiB	+0.26%	+0.0 KiB	+2
windows	components-catalog	267.0 KiB	273.0 KiB	+6.0 KiB	+2.24%	+2.1 KiB	+9
windows	design-theme-state	33.2 KiB	33.3 KiB	+0.1 KiB	+0.41%	+0.1 KiB	+2
windows	design-theme-state-legacy-source	35.3 KiB	35.4 KiB	+0.1 KiB	+0.38%	+0.0 KiB	+2
windows	design-legacy-theme-from-flex	100.0 KiB	100.1 KiB	+0.1 KiB	+0.13%	+0.1 KiB	+2

The job is advisory: size changes are reported but do not fail the pull request. Bundle or analysis errors still fail.

---

View bundle-size workflow run