feat add clash yaml convert (#3916)

* docs(agents): add AI agent guidance documentation

* feat(sub): add Clash/Mihomo YAML subscription service

Add SubClashService to convert subscription links to Clash/Mihomo
YAML format for direct client compatibility.

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

* feat(sub): integrate Clash YAML endpoint into subscription system

- Add Clash route handler in SUBController
- Update BuildURLs to include Clash URL
- Pass Clash settings through subscription pipeline

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

* feat(web): add Clash settings to entity and service

- Add SubClashEnable, SubClashPath, SubClashURI fields
- Add getter methods for Clash configuration
- Set default Clash path to /clash/ and enable by default

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

* feat(ui): add Clash settings to subscription panels

- Add Clash enable switch in general subscription settings
- Add Clash path/URI configuration in formats panel
- Display Clash QR code on subscription page
- Rename JSON tab to "Formats" for clarity

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

* feat(js): add Clash support to frontend models

- Add subClashEnable, subClashPath, subClashURI to AllSetting
- Generate and display Clash QR code on subscription page
- Handle Clash URL in subscription data binding

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

* fix

---------

Co-authored-by: Claude Sonnet 4.6 <noreply@anthropic.com>
Co-authored-by: Sanaei <ho3ein.sanaei@gmail.com>

sub/sub.go

@@ -91,12 +91,21 @@ func (s *Server) initRouter() (*gin.Engine, error) {
 		return nil, err
 	}
 
-	// Determine if JSON subscription endpoint is enabled
+	ClashPath, err := s.settingService.GetSubClashPath()
+	if err != nil {
+		return nil, err
+	}
+
 	subJsonEnable, err := s.settingService.GetSubJsonEnable()
 	if err != nil {
 		return nil, err
 	}
 
+	subClashEnable, err := s.settingService.GetSubClashEnable()
+	if err != nil {
+		return nil, err
+	}
+
 	// Set base_path based on LinksPath for template rendering
 	// Ensure LinksPath ends with "/" for proper asset URL generation
 	basePath := LinksPath
@@ -255,7 +264,7 @@ func (s *Server) initRouter() (*gin.Engine, error) {
 	g := engine.Group("/")
 
 	s.sub = NewSUBController(
-		g, LinksPath, JsonPath, subJsonEnable, Encrypt, ShowInfo, RemarkModel, SubUpdates,
+		g, LinksPath, JsonPath, ClashPath, subJsonEnable, subClashEnable, Encrypt, ShowInfo, RemarkModel, SubUpdates,
 		SubJsonFragment, SubJsonNoises, SubJsonMux, SubJsonRules, SubTitle, SubSupportUrl,
 		SubProfileUrl, SubAnnounce, SubEnableRouting, SubRoutingRules)