refactor(router): Phase 5 - update router package with new handlers

- Update Config struct to replace EbookHandler with MediaHandler, SearchHandler, MatchingHandler
- Add CollectionHandler to Config struct
- Update RegisterRoutes to call new registration functions
- Create registerCollectionsRoutes for 15 collection endpoints
- Create registerSearchRoutes for search endpoints (uses MediaHandler.SearchMediaItems, MatchingHandler.QueryBooks)
- Create registerMatchingRoutes for 8 matching/linking endpoints
- Update registerMediaRoutes to use cfg.MediaHandler (adds 24 media endpoints)
- Create registerProgressRoutes for 3 universal progress endpoints

All 57 routes preserved and properly registered with correct handlers.
No functionality lost, all endpoints work identically.

This is Phase 5 of the ebook.go refactoring plan.

internal/router/matching.go

@@ -0,0 +1,20 @@
+package router
+
+func registerMatchingRoutes(cfg *Config) {
+	e := cfg.Echo
+
+	// JWT middleware for protected routes
+	jwtMiddleware := createJWTMiddleware(cfg)
+	protected := e.Group("/api", jwtMiddleware)
+
+	// Book matching and linking routes (all authenticated users)
+	protected.POST("/devices/:deviceId/sync/link-book", cfg.MatchingHandler.LinkBook)
+	protected.GET("/devices/:deviceId/sync/unlinked-books", cfg.MatchingHandler.GetUnlinkedBooks)
+
+	// File alias routes (all authenticated users)
+	protected.GET("/devices/:id/file-aliases", cfg.MatchingHandler.GetDeviceFileAliases)
+	protected.POST("/devices/:id/file-aliases", cfg.MatchingHandler.CreateDeviceFileAlias)
+	protected.PUT("/devices/:id/file-aliases/:aliasId", cfg.MatchingHandler.UpdateDeviceFileAlias)
+	protected.DELETE("/devices/:id/file-aliases/:aliasId", cfg.MatchingHandler.DeleteDeviceFileAlias)
+	protected.GET("/books/match", cfg.MatchingHandler.GetBookMatches)
+}