feat: NCWF-5/6/7/8/9 chess analysis page and engine integration

- NCWF-5: scaffold /analysis route with ChessBoard viewer and navigation
- NCWF-6: FEN / PGN / Game-ID input form with depth selector
- NCWF-7: extend GameApiService with analyzePosition(); add AnalysisService
  with game-wide annotation pipeline; proxy /api/analysis -> :8087
- NCWF-8: EvalTimelineComponent — SVG win-chance chart per ply
- NCWF-9: AnnotatedMoveListComponent — quality labels (!! ! ?! ? ??)
  derived from win-chance delta

Also fix pre-existing app.spec.ts failure (missing provideHttpClient).
Apply project-wide prettier formatting pass.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

src/app/components/player-card/player-card.component.html

@@ -1,5 +1,9 @@
 <div class="player" [class.is-turn]="isActive">
-  <div class="player-avatar" [class.avatar-black]="color === 'black'" [class.avatar-white]="color === 'white'">
+  <div
+    class="player-avatar"
+    [class.avatar-black]="color === 'black'"
+    [class.avatar-white]="color === 'white'"
+  >
     {{ initial }}
   </div>