Check if these issues are valid — if so, understand the root cause of each and fix them. If appropriate, use sub-agents to investigate and fix each issue separately.


<file name="tracecat/agent/provider/schemas.py">

<violation number="1" location="tracecat/agent/provider/schemas.py:50">
P2: Add max-length validation to update fields to match create/DB constraints and prevent oversized PATCH payloads from failing at DB commit.</violation>
</file>

<file name="tracecat/agent/service.py">

<violation number="1" location="tracecat/agent/service.py:511">
P2: Default model selection is written with two independent commits, which can leave settings inconsistent if the second write fails.</violation>
</file>

<file name="tracecat/agent/provider/router.py">

<violation number="1" location="tracecat/agent/provider/router.py:52">
P2: Handle invalid pagination cursors in the router and return HTTP 400 instead of letting `ValueError` propagate.

(Based on your team's feedback about translating known validation/domain errors at router boundaries.) [FEEDBACK_USED]</violation>
</file>

<file name="tracecat/agent/catalog/service.py">

<violation number="1" location="tracecat/agent/catalog/service.py:156">
P1: Cursor pagination can skip rows with identical `created_at` values because the continuation filter ignores the `id` tie-breaker.</violation>
</file>

<file name="tracecat/agent/catalog/router.py">

<violation number="1" location="tracecat/agent/catalog/router.py:214">
P1: This endpoint truncates results but always returns `next_cursor=None`, which can make workspace models beyond `limit` permanently unreachable to clients.</violation>
</file>

<file name="tracecat/agent/access/router.py">

<violation number="1" location="tracecat/agent/access/router.py:83">
P1: Handle `TracecatNotFoundError` in `disable_model` and map it to HTTP 404; otherwise missing IDs return 500 via the global exception handler.

(Based on your team's feedback about translating known domain errors at router/global-handler boundaries.) [FEEDBACK_USED]</violation>
</file>

<file name="tracecat/agent/access/service.py">

<violation number="1" location="tracecat/agent/access/service.py:44">
P1: Missing `IntegrityError` handling for the unique constraint on `(organization_id, workspace_id, catalog_id)`. Enabling the same model twice will surface an unhandled `IntegrityError` instead of a meaningful error. Wrap the commit and translate to a domain error so routers can return HTTP 409.

(Based on your team's feedback about returning HTTP 409 for duplicate assignment operations.) [FEEDBACK_USED]</violation>

<violation number="2" location="tracecat/agent/access/service.py:45">
P1: Missing `await self.session.refresh(access)` after commit. In async SQLAlchemy, the commit expires all loaded objects; accessing attributes on `access` in `model_validate` will raise `MissingGreenlet` because implicit lazy loading is not available in async sessions. Every other agent service refreshes the object before returning it.</violation>
</file>

<file name="tracecat/agent/provider/service.py">

<violation number="1" location="tracecat/agent/provider/service.py:52">
P1: Partial secret update overwrites the entire encrypted config, losing previously stored fields. If a user updates only `api_key`, existing `custom_headers` are silently dropped (and vice versa). Decrypt the existing config first, merge the update, then re-encrypt.</violation>
</file>