fix(agent-v2): accept composer UI ids on manual metadata filter conditions (#40171)

Co-authored-by: autofix-ci[bot] <114827586+autofix-ci[bot]@users.noreply.github.com>

api/openapi/markdown/console-openapi.md

@@ -14302,9 +14302,19 @@ the current roster/workflow APIs scoped to Dify Agent.
 
 #### AgentKnowledgeMetadataCondition
 
+One manual metadata filter clause.
+
+``id`` and ``metadata_id`` are UI-only bookkeeping the composer sends on
+every save (a stable row key and a reference to the selected metadata
+field). They are persisted here for round-tripping the composer's draft
+state but are stripped before building the Agent runtime request, whose
+DTO only accepts ``name``/``comparison_operator``/``value``.
+
 | Name | Type | Description | Required |
 | ---- | ---- | ----------- | -------- |
 | comparison_operator | string, <br>**Available values:** "<", "=", ">", "after", "before", "contains", "empty", "end with", "in", "is", "is not", "not contains", "not empty", "not in", "start with", "≠", "≤", "≥" | *Enum:* `"<"`, `"="`, `">"`, `"after"`, `"before"`, `"contains"`, `"empty"`, `"end with"`, `"in"`, `"is"`, `"is not"`, `"not contains"`, `"not empty"`, `"not in"`, `"start with"`, `"≠"`, `"≤"`, `"≥"` | Yes |
+| id | string |  | No |
+| metadata_id | string |  | No |
 | name | string |  | Yes |
 | value | string<br>[ string ]<br>number |  | No |