refactor(api): split monolithic handlers.go into focused modules

Break down the 627-line handlers.go into specialized modules:
- handlers_chat.go: chat and streaming endpoints
- handlers_config.go: configuration endpoints
- handlers_common.go: shared utilities
- handlers_info.go: info and status endpoints
- handlers_terminal.go: terminal/shell endpoints
- handlers_tools.go: tool-related endpoints

Also includes config improvements, orchestrator enhancements, and
web component updates.

💘 Generated with Crush

Assisted-by: MiniMax-M2.7 via Crush <crush@charm.land>

internal/api/handlers_info.go

@@ -0,0 +1,119 @@
+package api
+
+import (
+	"net/http"
+
+	"github.com/muyue/muyue/internal/lsp"
+	"github.com/muyue/muyue/internal/mcp"
+	"github.com/muyue/muyue/internal/scanner"
+	"github.com/muyue/muyue/internal/skills"
+	"github.com/muyue/muyue/internal/version"
+)
+
+func (s *Server) handleInfo(w http.ResponseWriter, r *http.Request) {
+	writeJSON(w, map[string]interface{}{
+		"name":    version.Name,
+		"version": version.Version,
+		"author":  version.Author,
+	})
+}
+
+func (s *Server) handleSystem(w http.ResponseWriter, r *http.Request) {
+	if s.scanResult == nil {
+		s.scanResult = scanner.ScanSystem()
+	}
+	writeJSON(w, map[string]interface{}{
+		"system": s.scanResult.System,
+	})
+}
+
+func (s *Server) handleTools(w http.ResponseWriter, r *http.Request) {
+	if s.scanResult == nil {
+		s.scanResult = scanner.ScanSystem()
+	}
+	type toolInfo struct {
+		Name      string `json:"name"`
+		Installed bool   `json:"installed"`
+		Version   string `json:"version"`
+		Path      string `json:"path"`
+	}
+	tools := make([]toolInfo, len(s.scanResult.Tools))
+	for i, t := range s.scanResult.Tools {
+		tools[i] = toolInfo{
+			Name:      t.Name,
+			Installed: t.Installed,
+			Version:   t.Version,
+			Path:      t.Path,
+		}
+	}
+	writeJSON(w, map[string]interface{}{
+		"tools": tools,
+		"total": len(tools),
+	})
+}
+
+func (s *Server) handleConfig(w http.ResponseWriter, r *http.Request) {
+	if s.config == nil {
+		writeError(w, "no config", http.StatusNotFound)
+		return
+	}
+	writeJSON(w, map[string]interface{}{
+		"profile":  s.config.Profile,
+		"terminal": s.config.Terminal,
+		"bmad":     s.config.BMAD,
+	})
+}
+
+func (s *Server) handleProviders(w http.ResponseWriter, r *http.Request) {
+	if s.config == nil {
+		writeError(w, "no config", http.StatusNotFound)
+		return
+	}
+	writeJSON(w, map[string]interface{}{
+		"providers": s.config.AI.Providers,
+	})
+}
+
+func (s *Server) handleSkills(w http.ResponseWriter, r *http.Request) {
+	list, err := skills.List()
+	if err != nil {
+		writeError(w, err.Error(), http.StatusInternalServerError)
+		return
+	}
+	writeJSON(w, map[string]interface{}{
+		"skills": list,
+		"count":  len(list),
+	})
+}
+
+func (s *Server) handleLSP(w http.ResponseWriter, r *http.Request) {
+	servers := lsp.ScanServers()
+	writeJSON(w, map[string]interface{}{
+		"servers": servers,
+	})
+}
+
+func (s *Server) handleMCP(w http.ResponseWriter, r *http.Request) {
+	servers := mcp.ScanServers()
+	writeJSON(w, map[string]interface{}{
+		"servers":    servers,
+		"configured": true,
+	})
+}
+
+func (s *Server) handleMCPConfigure(w http.ResponseWriter, r *http.Request) {
+	if r.Method != "POST" {
+		writeError(w, "POST only", http.StatusMethodNotAllowed)
+		return
+	}
+	if err := mcp.ConfigureAll(s.config); err != nil {
+		writeError(w, err.Error(), http.StatusInternalServerError)
+		return
+	}
+	writeJSON(w, map[string]string{"status": "ok"})
+}
+
+func (s *Server) handleScan(w http.ResponseWriter, r *http.Request) {
+	s.scanResult = scanner.ScanSystem()
+	writeJSON(w, map[string]string{"status": "ok"})
+}