`abort_signal` (asyncio.Event) is passed via **kwargs into payloads during
tool_call streaming, causing "Object of type Event is not JSON serializable"
when the OpenAI client tries to serialize the request body.
Regression test added: test_prepare_chat_payload_strips_non_json_serializable_kwargs
Export the required icon set and expand it with icons used by
Vuetify internals that are not detected by static source scans.
Regenerate the MDI subset assets and update tests to assert that
all required icons are always included and deduplicated.
* perf(dashboard): subset MDI icon font and self-host Google Fonts
* perf(dashboard): subset MDI icon font and self-host Google Fonts
* perf(dashboard): subset MDI icon font and self-host Google Fonts
* perf(dashboard): subset MDI icon font cr fix
* chore: update lockfile
