fix(cd): harden zoxide directory suggestions

internal/config/config.go

@@ -79,17 +79,7 @@ type KeybindingsConfig struct {
 }
 
 type ZoxideConfig struct {
-	// ExtendCd adds zoxide's frecency database to `cd` completions.
-	//
-	// Without it `cd` only offers direct children of the current directory,
-	// because that is all the file generator walks -- so `cd proj` finds
-	// nothing unless you are already standing in the parent. With it, any
-	// directory zoxide has seen is reachable by name from anywhere, which is
-	// what `cd` is usually wanted for.
-	//
-	// Off by default: it shells out to zoxide, and the suggestions are absolute
-	// paths from outside the current directory, which is a real change in what
-	// `cd` offers.
+	// ExtendCd adds zoxide's frecency database to cd completions.
 	ExtendCd bool `toml:"extend-cd"`
 }
 

internal/config/config_test.go

@@ -30,6 +30,9 @@ func TestDefaultConfigAndState(t *testing.T) {
 	if !cfg.Core.CobraProbeEnabled {
 		t.Errorf("expected cobra probing to be enabled by default")
 	}
+	if cfg.Zoxide.ExtendCd {
+		t.Errorf("expected zoxide cd extension to be disabled by default")
+	}
 
 	// test manual provider registration
 	cfg.AI.Provider = "custom"