refactor(config): trim binder comments

pkg/config/binder/binder.go

@@ -1,5 +1,4 @@
-// Package binder binds OpenCloud yaml config files to config structs, as a leaf
-// package that avoids importing the aggregate service config in pkg/config.
+// Package binder binds yaml config files to config structs.
 package binder
 
 import (
@@ -42,8 +41,6 @@ func BindSourcesToStructsFS(fileSystem fs.FS, filePath, service string, dst any)
 
 		return err
 	}
-	// the error is ignored on purpose, matching the pre-extraction behavior:
-	// an unparseable yaml file binds nothing instead of failing the startup
 	_ = cnf.LoadSources("yaml", yamlContent)
 
 	err = cnf.BindStruct("", &dst)

pkg/config/binder/binder_test.go

@@ -14,8 +14,7 @@ type TestConfig struct {
 }
 
 func TestBindSourcesToStructs(t *testing.T) {
-	// setup test env: one var set to pin env expansion, two deliberately
-	// unset to pin the defaults
+	// setup test env
 	t.Setenv("BINDER_TEST_SET_VAR", "from-env")
 	yaml := `
 a: "${BINDER_TEST_SET_VAR|no-foo}"

pkg/config/helpers.go

@@ -7,7 +7,6 @@ import (
 )
 
 // BindSourcesToStructs assigns any config value from a config file / env variable to struct `dst`.
-// The implementation lives in pkg/config/binder.
 func BindSourcesToStructs(service string, dst any) error {
 	return binder.BindSourcesToStructs(service, dst)
 }