refactor: unify config and data structures

Makefile

@@ -7,7 +7,7 @@ build:
 
 ## run: run the server locally
 run: build
-	./bin/davserver -config config.yaml
+	./bin/davserver
 
 ## test: run all tests
 test:
@@ -37,7 +37,7 @@ hash-password:
 ## nidusctl: build and run the sharing-grant admin CLI
 ## Usage: make nidusctl ARGS="calendar share alice work bob write"
 nidusctl: build
-	./bin/nidusctl -config config.yaml $(ARGS)
+	./bin/nidusctl $(ARGS)
 
 ## templ-generate: regenerate *_templ.go files from internal/web/templates/*.templ
 templ-generate: