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/services/board-selection.service.ts

@@ -21,7 +21,7 @@ export class BoardSelectionService {
     state: GameState | null,
     currentSelection: BoardSelection,
     onMovesLoaded: (moves: LegalMove[]) => void,
-    onError: (error: string) => void
+    onError: (error: string) => void,
   ): BoardSelection {
     if (!state) {
       return currentSelection;
@@ -52,7 +52,7 @@ export class BoardSelectionService {
         },
         error: () => {
           onError('Could not load legal moves for selected square.');
-        }
+        },
       });
 
     return { selectedSquare: square, highlightedSquares: [], selectedSquareMoves: [] };