refactor(handlers): update all handlers for Echo v5 compatibility

Update all handler functions to use *echo.Context (pointer) instead of echo.Context (value) as required by Echo v5.

Changes across all handler files:
- analytics.go: Update handler signatures
- auth.go: Update authentication handler signatures
- book_matching.go: Update matching handler signatures
- collections.go: Update collection handler signatures
- collections_preview_test.go: Update test signatures
- commonhandlers.go: Update common handler signatures
- conflicts.go: Update conflict handler signatures
- context.go: Update context handler signatures
- dashboard.go: Update dashboard handler signatures
- devices.go: Update device handler signatures
- jobs.go: Update job handler signatures
- kobo.go: Update Kobo handler signatures
- koreader.go: Update Koreader handler signatures
- library.go: Update library handler signatures
- matching.go: Update matching handler signatures
- media.go: Update media handler signatures
- opds.go: Update OPDS handler signatures
- progress.go: Update progress handler signatures
- queue.go: Update queue handler signatures
- refresh_token.go: Update token handler signatures
- scanner.go: Update scanner handler signatures
- sidecar.go: Update sidecar handler signatures
- sync.go: Update sync handler signatures
- system_settings.go: Update settings handler signatures
- websocket.go: Update WebSocket handler signatures

All handlers now properly implement Echo v5's pointer-based context pattern.
This change is necessary for type safety and compatibility with Echo v5's
improved context handling and WebSocket support.

internal/handlers/matching.go

@@ -10,7 +10,7 @@ import (
 
 	"github.com/google/uuid"
 	"github.com/jackc/pgx/v5/pgtype"
-	"github.com/labstack/echo/v4"
+	"github.com/labstack/echo/v5"
 )
 
 // MatchingHandler handles book matching, linking, and file alias operations
@@ -33,7 +33,7 @@ func (mh *MatchingHandler) getMatchingService() *services.BookMatchingService {
 }
 
 // QueryBooks handles POST /api/sync/books/query
-func (mh *MatchingHandler) QueryBooks(c echo.Context) error {
+func (mh *MatchingHandler) QueryBooks(c *echo.Context) error {
 	matchingService := mh.getMatchingService()
 
 	var req services.BookQueryRequest
@@ -54,7 +54,7 @@ func (mh *MatchingHandler) QueryBooks(c echo.Context) error {
 }
 
 // LinkBook handles POST /api/devices/:deviceId/sync/link-book
-func (mh *MatchingHandler) LinkBook(c echo.Context) error {
+func (mh *MatchingHandler) LinkBook(c *echo.Context) error {
 	matchingService := mh.getMatchingService()
 
 	var req services.LinkBookRequest
@@ -93,7 +93,7 @@ func (mh *MatchingHandler) LinkBook(c echo.Context) error {
 }
 
 // GetUnlinkedBooks handles GET /api/devices/:deviceId/sync/unlinked-books
-func (mh *MatchingHandler) GetUnlinkedBooks(c echo.Context) error {
+func (mh *MatchingHandler) GetUnlinkedBooks(c *echo.Context) error {
 	matchingService := mh.getMatchingService()
 
 	deviceIDStr := c.Param("deviceId")
@@ -118,7 +118,7 @@ func (mh *MatchingHandler) GetUnlinkedBooks(c echo.Context) error {
 }
 
 // GetDeviceFileAliases handles GET /api/devices/:id/file-aliases
-func (mh *MatchingHandler) GetDeviceFileAliases(c echo.Context) error {
+func (mh *MatchingHandler) GetDeviceFileAliases(c *echo.Context) error {
 	deviceIDStr := c.Param("id")
 	deviceID, err := uuid.Parse(deviceIDStr)
 	if err != nil {
@@ -163,7 +163,7 @@ func (mh *MatchingHandler) GetDeviceFileAliases(c echo.Context) error {
 }
 
 // CreateDeviceFileAlias handles POST /api/devices/:id/file-aliases
-func (mh *MatchingHandler) CreateDeviceFileAlias(c echo.Context) error {
+func (mh *MatchingHandler) CreateDeviceFileAlias(c *echo.Context) error {
 	deviceIDStr := c.Param("id")
 	deviceID, err := uuid.Parse(deviceIDStr)
 	if err != nil {
@@ -218,7 +218,7 @@ func (mh *MatchingHandler) CreateDeviceFileAlias(c echo.Context) error {
 }
 
 // UpdateDeviceFileAlias handles PUT /api/devices/:id/file-aliases/:aliasId
-func (mh *MatchingHandler) UpdateDeviceFileAlias(c echo.Context) error {
+func (mh *MatchingHandler) UpdateDeviceFileAlias(c *echo.Context) error {
 	aliasIDStr := c.Param("aliasId")
 	aliasID, err := uuid.Parse(aliasIDStr)
 	if err != nil {
@@ -284,7 +284,7 @@ func (mh *MatchingHandler) UpdateDeviceFileAlias(c echo.Context) error {
 }
 
 // DeleteDeviceFileAlias handles DELETE /api/devices/:id/file-aliases/:aliasId
-func (mh *MatchingHandler) DeleteDeviceFileAlias(c echo.Context) error {
+func (mh *MatchingHandler) DeleteDeviceFileAlias(c *echo.Context) error {
 	aliasIDStr := c.Param("aliasId")
 	aliasID, err := uuid.Parse(aliasIDStr)
 	if err != nil {
@@ -306,7 +306,7 @@ func (mh *MatchingHandler) DeleteDeviceFileAlias(c echo.Context) error {
 }
 
 // GetBookMatches handles GET /api/books/match
-func (mh *MatchingHandler) GetBookMatches(c echo.Context) error {
+func (mh *MatchingHandler) GetBookMatches(c *echo.Context) error {
 	matchingService := mh.getMatchingService()
 
 	identifiers := c.QueryParams()["identifier"]
@@ -345,7 +345,7 @@ func (mh *MatchingHandler) GetBookMatches(c echo.Context) error {
 }
 
 // BulkLinkBooks handles POST /api/sync/bulk-link-books
-func (mh *MatchingHandler) BulkLinkBooks(c echo.Context) error {
+func (mh *MatchingHandler) BulkLinkBooks(c *echo.Context) error {
 	ctx := c.Request().Context()
 
 	var req BulkLinkBooksRequest
@@ -423,7 +423,7 @@ func (mh *MatchingHandler) BulkLinkBooks(c echo.Context) error {
 }
 
 // AutoLinkBooks handles POST /api/sync/auto-link-books
-func (mh *MatchingHandler) AutoLinkBooks(c echo.Context) error {
+func (mh *MatchingHandler) AutoLinkBooks(c *echo.Context) error {
 	ctx := c.Request().Context()
 	matchingService := mh.getMatchingService()
 
@@ -499,7 +499,7 @@ func (mh *MatchingHandler) AutoLinkBooks(c echo.Context) error {
 }
 
 // GetUnlinkedBookSuggestions handles GET /api/sync/unlinked-books/:id/suggestions
-func (mh *MatchingHandler) GetUnlinkedBookSuggestions(c echo.Context) error {
+func (mh *MatchingHandler) GetUnlinkedBookSuggestions(c *echo.Context) error {
 	ctx := c.Request().Context()
 	matchingService := mh.getMatchingService()