feat: vaults, scopes and files show their details: a vault's settings, who has a scope, a file's keys and git status

Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>

internal/provider/provider.go

@@ -107,6 +107,7 @@ func (c Container) ObjectTypes() []ObjectType {
 type Attr struct {
 	Label string
 	Value string
+	Warn  bool // worth a look (a plain .env tracked by git): shown in red
 }
 
 // Object describes a secret, key or certificate without its value.
@@ -199,6 +200,14 @@ type Account struct {
 	Copy, CopyLabel string
 }
 
+// ContainerDetails is implemented by providers that can say more about a
+// container than its listing does: a vault's settings, who has access to
+// a scope, how a file is encrypted and what git knows of it. It may go
+// over the network; ErrUnsupported means there's nothing more for c.
+type ContainerDetails interface {
+	Details(ctx context.Context, c Container) ([]Attr, error)
+}
+
 // AccountGroups is implemented by providers that can list the groups
 // their account is a member of, directly or through other groups. It
 // goes over the network.