Oracle wave-4 watch-outs:
- '5xx count: 1 should not be hidden'
- 'Add one future regression check that fails if both primary and
fallback LLM paths fail, since the fallback tunnel is now part
of the live behavior'
E2E now reports llm-gateway 5xx and system 5xx as two distinct
counts. The canvas-primary 503 is acknowledged + counted; only
system 5xx must be zero. New no_system_5xx assertion guards that.
wave4 adds gap1_cascade_did_not_exhaust: fails if telemetry shows
'[llm] all gateways exhausted' on the live assistant path. Locks
in that at least one gateway (primary or fallback-dev) is
returning real model output.
Browser trace showed fallback-dev cascade failing with 'Failed to
fetch' on the live site. dev.flow-master.ai OPTIONS preflight returns
HTTP 400 from foreign origins and the POST response lacks
Access-Control-Allow-Origin, so the browser blocks direct
cross-origin calls.
Add nginx location /api/llm-fallback/ that rewrites to
/api/v1/llm/ and proxies to dev.flow-master.ai (same DNS resolver
pattern as the demo proxy). Frontend now hits both gateways
same-origin via canvas.flow-master.ai, no CORS preflight needed.
The canvas-issued JWT is forwarded as-is and dev accepts it
(verified by curl).
canvas-bot