fix: restore config dry-run schema validation

src/cli/config-cli.ts

@@ -1313,6 +1313,7 @@ function collectDryRunSchemaErrors(params: {
 }): ConfigSetDryRunError[] {
   const validated = validateConfigObjectRaw(params.config, {
     touchedPaths: params.operations.map((operation) => operation.setPath),
+    validateBundledChannels: true,
   });
   if (validated.ok) {
     return [];

src/config/schema.base.generated.ts

@@ -21989,12 +21989,13 @@ export const GENERATED_BASE_CONFIG_SCHEMA: BaseConfigSchemaResponse = {
           "Web channel runtime settings for heartbeat and reconnect behavior when operating web-based chat surfaces. Use reconnect values tuned to your network reliability profile and expected uptime needs.",
       },
       channels: {
+        type: "object",
+        properties: {},
+        additionalProperties: true,
         title: "Channels",
         description:
           "Channel provider configurations plus shared defaults that control access policies, heartbeat visibility, and per-surface behavior. Keep defaults centralized and override per provider only where required.",
-        properties: {},
         required: [],
-        additionalProperties: true,
       },
       discovery: {
         type: "object",

src/config/validation.ts

@@ -621,9 +621,10 @@ function validateGatewayTailscaleBind(config: OpenClawConfig): ConfigValidationI
  */
 export function validateConfigObjectRaw(
   raw: unknown,
-  _opts?: {
+  opts?: {
     sourceRaw?: unknown;
     touchedPaths?: ReadonlyArray<ReadonlyArray<string>>;
+    validateBundledChannels?: boolean;
   },
 ): { ok: true; config: OpenClawConfig } | { ok: false; issues: ConfigValidationIssue[] } {
   const normalizedRaw = stripDeprecatedValidationKeys(raw);
@@ -638,7 +639,9 @@ export function validateConfigObjectRaw(
   }
   const validatedConfig = validated.data as OpenClawConfig;
   const channelIssues =
-    policyIssues.length > 0 ? collectRawBundledChannelConfigIssues(validatedConfig) : [];
+    policyIssues.length > 0 || opts?.validateBundledChannels
+      ? collectRawBundledChannelConfigIssues(validatedConfig)
+      : [];
   if (channelIssues.length > 0) {
     return {
       ok: false,