fix(cron): preserve telegram announce target + delivery truth

src/telegram/target-writeback.test.ts

@@ -143,4 +143,46 @@ describe("maybePersistResolvedTelegramTarget", () => {
       expect.any(Object),
     );
   });
+
+  it("matches username targets case-insensitively", async () => {
+    readConfigFileSnapshotForWrite.mockResolvedValue({
+      snapshot: {
+        config: {
+          channels: {
+            telegram: {
+              defaultTo: "https://t.me/mychannel",
+            },
+          },
+        },
+      },
+      writeOptions: {},
+    });
+    loadCronStore.mockResolvedValue({
+      version: 1,
+      jobs: [{ id: "a", delivery: { channel: "telegram", to: "https://t.me/mychannel" } }],
+    });
+
+    await maybePersistResolvedTelegramTarget({
+      cfg: {} as OpenClawConfig,
+      rawTarget: "@MyChannel",
+      resolvedChatId: "-100123",
+    });
+
+    expect(writeConfigFile).toHaveBeenCalledWith(
+      expect.objectContaining({
+        channels: {
+          telegram: {
+            defaultTo: "-100123",
+          },
+        },
+      }),
+      expect.any(Object),
+    );
+    expect(saveCronStore).toHaveBeenCalledWith(
+      "/tmp/cron/jobs.json",
+      expect.objectContaining({
+        jobs: [{ id: "a", delivery: { channel: "telegram", to: "-100123" } }],
+      }),
+    );
+  });
 });

src/telegram/target-writeback.ts

@@ -17,9 +17,17 @@ function asObjectRecord(value: unknown): Record<string, unknown> | null {
   return value as Record<string, unknown>;
 }
 
+function normalizeTelegramLookupTargetForMatch(raw: string): string | undefined {
+  const normalized = normalizeTelegramLookupTarget(raw);
+  if (!normalized) {
+    return undefined;
+  }
+  return normalized.startsWith("@") ? normalized.toLowerCase() : normalized;
+}
+
 function normalizeTelegramTargetForMatch(raw: string): string | undefined {
   const parsed = parseTelegramTarget(raw);
-  const normalized = normalizeTelegramLookupTarget(parsed.chatId);
+  const normalized = normalizeTelegramLookupTargetForMatch(parsed.chatId);
   if (!normalized) {
     return undefined;
   }
@@ -49,7 +57,7 @@ function resolveLegacyRewrite(params: {
   if (normalizeTelegramChatId(parsed.chatId)) {
     return null;
   }
-  const normalized = normalizeTelegramLookupTarget(parsed.chatId);
+  const normalized = normalizeTelegramLookupTargetForMatch(parsed.chatId);
   if (!normalized) {
     return null;
   }