Fix smoke 2차 gaps: hotkey tests, focus filter, viewport picking (#13)

Gap E — Hotkey named key
- UiaPlayerHost: extract ParsedHotkey record + ParseHotkey static
- HotkeyParseTests: 8 tests (enter/tab/a/ctrl+c/ctrl+shift+s/f5/alt+f4/empty)

Gap F — recorder focus_change SUT filter
- FocusEventFilter.ShouldAccept static rule (same/zero/unknown/unknown-sut)
- Program.cs wires it inside RegisterFocusChangedEvent callback
- FocusEventFilterTests: 4 tests

Gap G — viewport picking foreign-process fallback
- IWindowPointSource + WindowPointResolver pure resolver
- FlaUiPointSource wired in Program.cs (best-effort hit test, honest partial for live SUT)
- WindowPointResolverTests: 5 tests

Tests: 77 → 94, build 0/0 (TreatWarningsAsErrors preserved).

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

PROGRESS.md

@@ -42,6 +42,7 @@
 | 2026-04-07 | sut-prober snake_case + scaffolding review 1회차 | commit `0f0324e` |
 | 2026-04-07 | normalizer follow-ups + Evaluator pass — float epsilon 구성화 + JSON-path 마스크 스코핑, 77 tests | commit `eeee3c2` |
 | 2026-04-08 | **Smoke test 2회차 — 첫 E2E 성공** 🎉 Box geometry 생성 확인 | `docs/history/2026-04-08_smoke-2회차-첫-e2e-성공.md`, `scenarios/box-v5*.yaml` |
+| 2026-04-08 | 이슈 #13 Gap E/F/G fix — HotkeyParseTests + FocusEventFilter + WindowPointResolver, 94 tests | `docs/history/2026-04-08_이슈13-smoke3-fix-generator.md` |
 
 ## In progress