Monitor:
- callProvider now returns both textPath-extracted text and raw body;
runCheckForModel uses rawBody on non-2xx so history.message stops being
"upstream HTTP 503: " with empty body (gjson textPath produces "" for
error responses like {"error":{"message":"No available accounts..."}})
- truncateForErrorBody collapses whitespace then caps at 300 bytes
(monitorErrorBodySnippetMaxBytes); final truncateMessage still enforces
the 500-byte DB column cap
Frontend:
- MonitorFormDialog: primary_model input text color and ModelTagInput tags
now both track form.provider (via new getPlatformTextClass + existing
getPlatformTagClass with platform prop).
(cherry-picked from 1d3b0418; dropped gateway_handler logging改动，不在本 PR 范围)
b363bff1d8