Feat: add agent share team viewer (#6222)

### What problem does this PR solve?
Allow member view agent  
#  Canvas editor

![image](https://github.com/user-attachments/assets/042af36d-5fd1-43e2-acf7-05869220a1c1)
# List agent

![image](https://github.com/user-attachments/assets/8b9c7376-780b-47ff-8f5c-6c0e7358158d)
# Setting 

![image](https://github.com/user-attachments/assets/6cb7d12a-7a66-4dd7-9acc-5b53ff79a10a)
 
_Briefly describe what this PR aims to solve. Include background context
that will help reviewers understand the purpose of the PR._

### Type of change

- [ ] Bug Fix (non-breaking change which fixes an issue)
- [x] New Feature (non-breaking change which adds functionality)
- [ ] Documentation Update
- [ ] Refactoring
- [ ] Performance Improvement
- [ ] Other (please describe):

---------

Co-authored-by: Kevin Hu <kevinhu.sh@gmail.com>

api/db/db_models.py

@@ -967,11 +967,17 @@ class UserCanvas(DataBaseModel):
     avatar = TextField(null=True, help_text="avatar base64 string")
     user_id = CharField(max_length=255, null=False, help_text="user_id", index=True)
     title = CharField(max_length=255, null=True, help_text="Canvas title")
-
+    
+    permission = CharField(
+        max_length=16,
+        null=False,
+        help_text="me|team",
+        default="me",
+        index=True)
     description = TextField(null=True, help_text="Canvas description")
     canvas_type = CharField(max_length=32, null=True, help_text="Canvas type", index=True)
     dsl = JSONField(null=True, default={})
-
+    
     class Meta:
         db_table = "user_canvas"
 
@@ -1140,3 +1146,11 @@ def migrate_db():
             )
         except Exception:
             pass
+        try:
+            migrate(
+                migrator.add_column("user_canvas", "permission",
+                                    CharField(max_length=16, null=False, help_text="me|team", default="me", index=True))
+            )
+        except Exception:
+            pass
+