docs: correct memory decay claims that contradict the SDK (#6905)

docs/platform/features/custom-categories.mdx

@@ -75,7 +75,7 @@ print(response)
 ```
 </CodeGroup>
 
-This "Updated custom categories" message is specific to a PATCH-style partial update, which is what `client.project.update()` sends. Calling the raw API with a full PUT instead returns a generic `{"message": "Project updated successfully."}`, regardless of which fields changed.
+Treat the `message` string as informational. The project endpoint accepts `PATCH` only, and its documented response is the generic `{"message": "Project updated successfully"}`. Confirm an update by reading the field back, as in the next step, rather than by matching on the message.
 
 ### 2. Confirm the active catalog
 

docs/platform/features/memory-decay.mdx

@@ -64,7 +64,7 @@ client.project.update(decay=True)
 ```
 
 ```javascript JavaScript
-await client.project.update({ decay: true });
+await client.updateProject({ decay: true });
 ```
 
 ```bash cURL
@@ -75,32 +75,32 @@ curl -X PATCH https://api.mem0.ai/api/v1/orgs/organizations/$ORG_ID/projects/$PR
 ```
 
 ```json Response
-{ "message": "Updated decay" }
+{ "message": "Project updated successfully" }
 ```
 </CodeGroup>
 
 ### 2. Confirm the state
 
-`decay` is returned on every project read; there is currently no way to narrow the response to just this field, so read the full project object and pick out `decay`.
+`decay` is returned on every project read. To fetch only this field, use `?fields=decay`.
 
 <CodeGroup>
 ```python Python
-response = client.project.get()
+response = client.project.get(fields=["decay"])
 print(response["decay"])
 ```
 
 ```javascript JavaScript
-const response = await client.project.get();
+const response = await client.getProject({ fields: ["decay"] });
 console.log(response.decay);
 ```
 
 ```bash cURL
-curl "https://api.mem0.ai/api/v1/orgs/organizations/$ORG_ID/projects/$PROJECT_ID/" \
+curl "https://api.mem0.ai/api/v1/orgs/organizations/$ORG_ID/projects/$PROJECT_ID/?fields=decay" \
   -H "Authorization: Token $MEM0_API_KEY"
 ```
 
 ```json Response
-{ "decay": true, "...": "full project object" }
+{ "decay": true }
 ```
 </CodeGroup>
 
@@ -114,7 +114,7 @@ client.project.update(decay=False)
 ```
 
 ```javascript JavaScript
-await client.project.update({ decay: false });
+await client.updateProject({ decay: false });
 ```
 
 ```bash cURL