PR #2545 self-review findings.
(1) originalModel was set from wsMetadataModel alone. On a hermes/pre-#240
workspace where MODEL_PROVIDER was never written but YAML has
runtime_config.model: "something", originalModel="" while the form
rendered "something" — handleSave's diff fired /model PUT on every
unrelated save (tier change → workspace auto-restart). Snapshot from
the actual rendered model in BOTH loadConfig branches so the diff
stays scoped to user-initiated changes.
(2) The store-flush test asserted the call happened but didn't pin
success-gating. A future refactor wrapping the PATCH in try/catch and
unconditionally calling updateNodeData would have shipped green and
left the badge lying about server-rejected writes. New test pins the
PATCH-rejects-no-flush invariant.
(3) Hermes-edge regression test for (1).
All 1214 canvas tests pass.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
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