fix: rename dialog_id to chat_id in chat_channel (backend + frontend) (#16096)

## Summary

- The `ChatChannel` DB column was renamed from `dialog_id` to `chat_id`
via a migration (added in a prior commit).
- Aligns the REST API layer (`chat_channel_api.py`,
`chat_channel_service.py`) to use `chat_id` consistently.
- Updates the frontend (`interface.ts`, `hooks.ts`,
`connect-dialog-modal.tsx`, `added-channel-card.tsx`) to read/write
`chat_id` instead of `dialog_id`.
- The joined `dialog_name` alias in the list query is unchanged (backend
still returns it under that name).

Co-authored-by: Claude Sonnet 4.6 <noreply@anthropic.com>

api/db/db_models.py

@@ -1253,7 +1253,7 @@ class ChatChannel(DataBaseModel):
     name = CharField(max_length=128, null=False, help_text="Bot name", index=False)
     channel = CharField(max_length=128, null=False, help_text="Chat channel type", index=True)
     config = JSONField(null=False, default={}, help_text="Channel credential & settings")
-    dialog_id = CharField(max_length=32, null=True, default=None, help_text="connected dialog id", index=True)
+    chat_id = CharField(max_length=32, null=True, default=None, help_text="connected chat id", index=True)
     status = IntegerField(default=1, index=True)
 
     def __str__(self):
@@ -1778,6 +1778,7 @@ def migrate_db():
     alter_db_column_type(migrator, "file", "size", BigIntegerField(default=0, index=True))
     alter_db_add_column(migrator, "tenant", "ocr_id", CharField(max_length=128, null=True, help_text="default ocr model ID", index=True))
     alter_db_column_type(migrator, "chat_channel", "status", IntegerField(default=1, index=True))
+    alter_db_rename_column(migrator, "chat_channel", "dialog_id", "chat_id")
     # Drop both the explicit "idx_*" name from later migrations AND the
     # Peewee-auto-derived "<table-as-classname>_<col1>_<col2>" name from the
     # original TenantModelInstance definition (commit dc4b82523). Databases

api/db/services/chat_channel_service.py

@@ -34,7 +34,7 @@ class ChatChannelService(CommonService):
             cls.model.id,
             cls.model.name,
             cls.model.channel,
-            cls.model.dialog_id,
+            cls.model.chat_id,
             cls.model.status,
             Dialog.name.alias("dialog_name"),
         ]
@@ -43,7 +43,7 @@ class ChatChannelService(CommonService):
             .join(
                 Dialog,
                 join_type=JOIN.LEFT_OUTER,
-                on=(Dialog.id == cls.model.dialog_id),
+                on=(Dialog.id == cls.model.chat_id),
             )
             .where(cls.model.tenant_id == tenant_id)
             .order_by(cls.model.create_time.desc())