feat: add agent skills and guardrails functionality

- Introduced new tools for managing agent skills and guardrails, including add, remove, and list operations.
- Updated README.md to document new commands and usage patterns for skills and guardrails.
- Enhanced server configuration to support longer read and write timeouts.
- Increased maximum upload size for files to 100 MB and adjusted related configurations.
- Created database migrations for agent skills, guardrails, and their associations with projects.
- Updated relevant code files to integrate new skills and guardrails into the application logic.

internal/app/app.go

@@ -173,6 +173,7 @@ func routes(logger *slog.Logger, cfg *config.Config, db *store.DB, provider ai.P
 		Calendar:      tools.NewCalendarTool(db),
 		Meals:         tools.NewMealsTool(db),
 		CRM:           tools.NewCRMTool(db),
+		Skills:        tools.NewSkillsTool(db, activeProjects),
 	}
 
 	mcpHandler := mcpserver.New(cfg.MCP, toolSet)

internal/app/files.go

@@ -11,7 +11,10 @@ import (
 	"git.warky.dev/wdevs/amcs/internal/tools"
 )
 
-const maxUploadBytes = 50 << 20
+const (
+	maxUploadBytes      = 100 << 20
+	multipartFormMemory = 32 << 20
+)
 
 func fileUploadHandler(files *tools.FilesTool) http.Handler {
 	return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
@@ -53,7 +56,7 @@ func parseUploadRequest(r *http.Request) (tools.SaveFileDecodedInput, error) {
 }
 
 func parseMultipartUpload(r *http.Request) (tools.SaveFileDecodedInput, error) {
-	if err := r.ParseMultipartForm(maxUploadBytes); err != nil {
+	if err := r.ParseMultipartForm(multipartFormMemory); err != nil {
 		return tools.SaveFileDecodedInput{}, err
 	}