## Summary
Fix the duplicate \`<WidgetColorPicker>\` rendering on the \`Color to
RGB Int\` node (and any other COLOR-using V3 node that the runtime
double-registers a widget for).
<img width="480" alt="after-fix-dedupe-proof"
src="https://github.com/user-attachments/assets/5c801806-ed5d-493f-92b6-e0b99dd8e408"
/>
## Changes
- **What**:
- \`useProcessedWidgets.getWidgetIdentity\`: fall back to the host
\`nodeId\` parameter for the dedupe identity root when neither
\`storeNodeId/widget.nodeId\` nor \`sourceExecutionId\` is set. Normal
root-graph widgets now dedupe identically to promoted/execution-scoped
widgets, so any duplicate same-name+same-type widget collapses to one
render. \`sourceExecutionId\` precedence is preserved.
- \`useColorWidget\`: read top-level \`default\` from the V2 spec (falls
back to nested \`options.default\` for hand-authored V2 specs), and
short-circuit if a same-name color widget already exists on
\`node.widgets\` so a second \`addWidget('color', …)\` call from
upstream hooks (or a \`configure\` round-trip) no longer duplicates the
row.
- **Tests**:
- New \`useColorWidget.test.ts\` covers top-level default,
nested-options fallback, no-default fallback, and the idempotency guard.
- \`useProcessedWidgets.test.ts\` gets a regression case for two
identical color widgets on the same node collapsing to one render, plus
an updated \`getWidgetIdentity\` case for the host-nodeId fallback.
## Review Focus
- \`getWidgetIdentity\` precedence change. The fallback only fires when
none of \`storeNodeId\`, \`widget.nodeId\`, or \`sourceExecutionId\` are
present, so promoted/exec-scoped widgets (incl. the \"unresolved
same-name promoted entries distinct by source execution identity\"
\`NodeWidgets\` test) are unaffected.
- \`useColorWidget\` idempotency guard is defensive — the root cause of
the second \`addWidget\` call (cloud-only hook or persisted
\`info.widgets\` configure round-trip) is not in this diff; that's
tracked separately.
Fixes
[FE-842](https://linear.app/comfyorg/issue/FE-842/color-to-rgb-int-node-shows-duplicate-color-widgets)
d405002127