Plugins: clean up channel config on uninstall (#35915)

* Plugins: clean up channel config on uninstall

`openclaw plugins uninstall` only removed `plugins.*` entries but left
`channels.<id>` config behind, causing errors when the gateway
referenced a channel whose plugin no longer existed.

Now `removePluginFromConfig` also deletes the matching
`channels.<pluginId>` entry (exact match only), and the CLI
previews/reports the removal. Shared config keys like `defaults`
and `modelByChannel` are guarded from accidental removal.

* Plugins: sync uninstall preview with channel cleanup

* fix: clean up channel config on uninstall (#35915) (thanks @wbxl2000)

---------

Co-authored-by: George Zhang <georgezhangtj97@gmail.com>

src/cli/plugins-cli.ts

@@ -17,7 +17,11 @@ import {
   buildPluginStatusReport,
   formatPluginCompatibilityNotice,
 } from "../plugins/status.js";
-import { resolveUninstallDirectoryTarget, uninstallPlugin } from "../plugins/uninstall.js";
+import {
+  resolveUninstallChannelConfigKeys,
+  resolveUninstallDirectoryTarget,
+  uninstallPlugin,
+} from "../plugins/uninstall.js";
 import { defaultRuntime } from "../runtime.js";
 import { formatDocsLink } from "../terminal/links.js";
 import { getTerminalTableWidth, renderTable } from "../terminal/table.js";
@@ -626,6 +630,15 @@ export function registerPluginsCli(program: Command) {
       if (cfg.plugins?.slots?.memory === pluginId) {
         preview.push(`memory slot (will reset to "memory-core")`);
       }
+      const channelIds = plugin?.status === "loaded" ? plugin.channelIds : undefined;
+      const channels = cfg.channels as Record<string, unknown> | undefined;
+      if (hasInstall && channels) {
+        for (const key of resolveUninstallChannelConfigKeys(pluginId, { channelIds })) {
+          if (Object.hasOwn(channels, key)) {
+            preview.push(`channel config (channels.${key})`);
+          }
+        }
+      }
       const deleteTarget = !keepFiles
         ? resolveUninstallDirectoryTarget({
             pluginId,
@@ -660,6 +673,7 @@ export function registerPluginsCli(program: Command) {
       const result = await uninstallPlugin({
         config: cfg,
         pluginId,
+        channelIds,
         deleteFiles: !keepFiles,
         extensionsDir,
       });
@@ -690,6 +704,9 @@ export function registerPluginsCli(program: Command) {
       if (result.actions.memorySlot) {
         removed.push("memory slot");
       }
+      if (result.actions.channelConfig) {
+        removed.push("channel config");
+      }
       if (result.actions.directory) {
         removed.push("directory");
       }