feat(rate-of-closure): add camera tracking and snap views

[d-sorgcodexagent]

Summary

• add shared Python/TypeScript camera state with canonical isometric, face-on (explicit side), down-the-line, and overhead views
• add bounded opt-in clubhead/ball tracking, preserved zoom, manual-orbit suspension, Auto Fit, and Recenter across Tools PyQt and React viewports
• add deterministic previous/next solver-frame stepping and real-browser coverage for playback/camera interaction combinations
• use immutable campaign evidence_commit_sha metadata rather than an impossible self-referential mutable PR-head field
• normally propagate the exact repaired flight-to-ground stack through feat(flight-ground): qualify physical transfer state #4288 while preserving the unchanged feat/4199-wind-workflow base
• repair the complete hosted MyPy delta without changing runtime values, wire bytes, coordinate transforms, physics, or camera behavior

Current exact evidence

• current exact PR head: 57942e64744a199e4fd7d604fe2eeb9faddd062a
• composed-stack merge commit: a51e49e4d2e7f5b1985c802f8290ea7649e7927e
• merge parents, in order: original camera child 9ffd8d280c77977a41e93bd0caef9678d1c231b6; repaired feat(flight-ground): qualify physical transfer state #4288 parent 108a841b1378c992defd3c7b7ee263d41a6c8b24
• immutable original camera implementation evidence remains 2095e748ddca2d7036bbd49a731528f5634daff9
• complete composed Python gate: 1,738 passed with two explicit optional build123d skips; installed tools_core parity executed
• complete React gate: 110 files / 670 tests; TypeScript, zero-warning ESLint, and 194-module production build passed
• browser camera gate: four Playwright cases across desktop and constrained 2x-DPR viewport
• Rust: all 137 tools-core tests, formatting, and warning-denied Clippy passed
• hosted-delta repair: the exact pinned MyPy 1.13 command passes all 33 changed production files; 79 focused ground/transfer/flight tests and Ruff/format pass
• Bandit, campaign manifest, documentation, module/500-line, assertion, secrets, conflict-marker, and diff gates passed
• two independent exact-tree reviews found no findings: the composed stack and the hosted-delta typing repair were both reviewed before publication

Remaining gates

This remains a draft feature-stack PR. Fresh protected current-head CI and required review are required after the hosted-delta repair; the obsolete failed job 93503197807 on head a51e49e4d2e7f5b1985c802f8290ea7649e7927e will not be retried. Native rendered/font QA and UpstreamDrift consumer parity against an immutable protected Tools pin are also still required. Camera preference persistence remains tracked by parent workspace epic #4218 and is not claimed here. No branch was rebased, retargeted, rewritten, or force-pushed.

Relates to #4284 and #4218.

[dieterolson]

Consolidated into #4410. Closing to eliminate CI runner load.