feat(telegram): add silent message option (#2382)

* feat(telegram): add silent message option (disable_notification)

Add support for sending Telegram messages silently without notification
sound via the `silent` parameter on the message tool.

Changes:
- Add `silent` boolean to message tool schema
- Extract and pass `silent` through telegram plugin
- Add `disable_notification: true` to Telegram API calls
- Add `--silent` flag to CLI `message send` command
- Add unit test for silent flag

Closes #2249

AI-assisted (Claude) - fully tested with unit tests + manual Telegram testing

* feat(telegram): add silent send option (#2382) (thanks @Suksham-sharma)

---------

Co-authored-by: Pocket Clawd <pocket@Pockets-Mac-mini.local>

src/channels/plugins/actions/telegram.test.ts

@@ -36,4 +36,30 @@ describe("telegramMessageActions", () => {
       cfg,
     );
   });
+
+  it("passes silent flag for silent sends", async () => {
+    handleTelegramAction.mockClear();
+    const cfg = { channels: { telegram: { botToken: "tok" } } } as ClawdbotConfig;
+
+    await telegramMessageActions.handleAction({
+      action: "send",
+      params: {
+        to: "456",
+        message: "Silent notification test",
+        silent: true,
+      },
+      cfg,
+      accountId: undefined,
+    });
+
+    expect(handleTelegramAction).toHaveBeenCalledWith(
+      expect.objectContaining({
+        action: "sendMessage",
+        to: "456",
+        content: "Silent notification test",
+        silent: true,
+      }),
+      cfg,
+    );
+  });
 });