Fix auth error preservation and platform-specific DNS golden files

Only synthesize ErrNotWorkspaceClient when the host type is actually
wrong (AccountHost). For other auth errors like ErrCannotConfigureDefault,
return the original error to preserve actionable error messages.

Also add replacement rules for platform-specific DNS resolver details
in auth switch/profiles acceptance tests (Linux includes "on 127.0.0.53:53",
macOS does not).

Co-authored-by: Isaac

Author: simonfaltum

acceptance/cmd/auth/profiles/test.toml

@@ -1,3 +1,9 @@
 Ignore = [
     "home"
 ]
+
+# Normalize platform-specific DNS error messages in host metadata warnings.
+# Linux includes resolver address (e.g. "on 127.0.0.53:53"), macOS does not.
+[[Repls]]
+Old = 'dial tcp: lookup (\S+)( on \S+)?: no such host'
+New = 'dial tcp: lookup $1: no such host'

acceptance/cmd/auth/switch/nominal/test.toml

@@ -1,3 +1,9 @@
 Ignore = [
     "home"
 ]
+
+# Normalize platform-specific DNS error messages in host metadata warnings.
+# Linux includes resolver address (e.g. "on 127.0.0.53:53"), macOS does not.
+[[Repls]]
+Old = 'dial tcp: lookup (\S+)( on \S+)?: no such host'
+New = 'dial tcp: lookup $1: no such host'

cmd/root/auth.go

@@ -193,17 +193,22 @@ func workspaceClientOrPrompt(ctx context.Context, cfg *config.Config, allowPromp
 	// ErrNotWorkspaceClient from NewWorkspaceClient (as of v0.125.0, host-type
 	// validation was removed in favor of host metadata resolution). Use
 	// HostType() to detect wrong host type, and check for ErrCannotConfigureDefault.
-	needsPrompt := cfg.HostType() == config.AccountHost ||
-		errors.Is(err, config.ErrCannotConfigureDefault)
+	wrongHostType := cfg.HostType() == config.AccountHost
+	needsPrompt := wrongHostType || errors.Is(err, config.ErrCannotConfigureDefault)
 
 	if !needsPrompt {
 		return w, err
 	}
 
 	if !allowPrompt || !cmdio.IsPromptSupported(ctx) {
-		// Synthesize ErrNotWorkspaceClient so callers (like MustAnyClient)
-		// can detect the wrong config type and fall through to account client.
-		return w, databricks.ErrNotWorkspaceClient
+		// Only synthesize ErrNotWorkspaceClient for wrong host type so that
+		// callers like MustAnyClient can fall through to account client.
+		// For other errors (e.g. ErrCannotConfigureDefault), return the
+		// original error to preserve actionable error messages.
+		if wrongHostType {
+			return w, databricks.ErrNotWorkspaceClient
+		}
+		return w, err
 	}
 
 	// Try picking a profile dynamically if the current configuration is not valid.