fix(telegram): revert to defineChannelPluginEntry from plugin-sdk/core

defineBundledChannelEntry from channel-entry-contract is not in the
package.json exports map, causing ERR_PACKAGE_PATH_NOT_EXPORTED at
post-build. defineChannelPluginEntry from plugin-sdk/core IS exported
and supports registerFull. This was the original PR approach.

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

Author: engineer

.github/workflows/docker-telegram-proxy.yml

@@ -36,15 +36,6 @@ jobs:
         id: image
         run: echo "name=${REGISTRY}/${GITHUB_REPOSITORY,,}:telegram-proxy" >> "$GITHUB_OUTPUT"
 
-      - name: Verify source files
-        run: |
-          echo "=== Checking proxy-ingress source ==="
-          ls -la extensions/telegram/src/proxy-ingress.ts
-          head -5 extensions/telegram/index.ts
-          echo "=== Checking proxy-ingress exists ==="
-          grep -c "createProxyIngressHandler" extensions/telegram/index.ts
-          grep -c "registerFull" extensions/telegram/index.ts
-
       - name: Build and push
         id: build
         uses: docker/build-push-action@v6

extensions/telegram/index.ts

@@ -1,24 +1,19 @@
-import { defineBundledChannelEntry } from "openclaw/plugin-sdk/channel-entry-contract";
+import type { ChannelPlugin } from "openclaw/plugin-sdk/core";
+import { defineChannelPluginEntry } from "openclaw/plugin-sdk/core";
+import { telegramPlugin } from "./src/channel.js";
+import { createProxyIngressHandler } from "./src/proxy-ingress.js";
+import { setTelegramRuntime } from "./src/runtime.js";
 
-export default defineBundledChannelEntry({
+export { telegramPlugin } from "./src/channel.js";
+export { setTelegramRuntime } from "./src/runtime.js";
+
+export default defineChannelPluginEntry({
   id: "telegram",
   name: "Telegram",
   description: "Telegram channel plugin",
-  importMetaUrl: import.meta.url,
-  plugin: {
-    specifier: "./channel-plugin-api.js",
-    exportName: "telegramPlugin",
-  },
-  secrets: {
-    specifier: "./secret-contract-api.js",
-    exportName: "channelSecrets",
-  },
-  runtime: {
-    specifier: "./runtime-api.js",
-    exportName: "setTelegramRuntime",
-  },
-  async registerFull(api) {
-    const { createProxyIngressHandler } = await import("./src/proxy-ingress.js");
+  plugin: telegramPlugin as ChannelPlugin,
+  setRuntime: setTelegramRuntime,
+  registerFull(api) {
     const handler = createProxyIngressHandler(api);
     api.registerHttpRoute({
       path: "/api/channels/telegram/proxy-ingress",