feat: Add Insights tab to dashboard for physics visualizations

Dashboard integration for Study Insights module (SYS_16):
- Backend: New /api/insights/ routes for generating and viewing insights
- Frontend: New Insights.tsx page with Plotly visualization
- Navigation: Added Insights tab between Analysis and Results

Available insight types:
- Zernike WFE (wavefront error for mirrors)
- Stress Field (Von Mises stress contours)
- Modal Analysis (natural frequencies/mode shapes)
- Thermal Field (temperature distribution)
- Design Space (parameter-objective exploration)

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

atomizer-dashboard/backend/api/main.py

@@ -12,7 +12,7 @@ import sys
 # Add parent directory to path to import optimization_engine
 sys.path.append(str(Path(__file__).parent.parent.parent.parent))
 
-from api.routes import optimization, claude, terminal
+from api.routes import optimization, claude, terminal, insights
 from api.websocket import optimization_stream
 
 # Create FastAPI app
@@ -36,6 +36,7 @@ app.include_router(optimization.router, prefix="/api/optimization", tags=["optim
 app.include_router(optimization_stream.router, prefix="/api/ws", tags=["websocket"])
 app.include_router(claude.router, prefix="/api/claude", tags=["claude"])
 app.include_router(terminal.router, prefix="/api/terminal", tags=["terminal"])
+app.include_router(insights.router, prefix="/api/insights", tags=["insights"])
 
 @app.get("/")
 async def root():