## Summary
Migrates the `inputs[].link` mirror-based reactivity tracking to
`linkStore` queries and deletes the slot-link reprojection machinery in
`useGraphNodeManager`.
## Changes
- **What**: `NodeSlots.linkedWidgetedInputs`, `usePartitionedBadges`'
pricing pokes, and `trackNodePrice` now query
`linkStore.isInputSlotConnected` (root graph id + unfiltered slot
index). Deletes the `node:slot-links:changed` handler and its
load-bearing comment, the emitter-less `node:slot-errors:changed`
handler, `refreshNodeInputs`, and the node-removal refresh-all loop.
Adds unified-mode NodeSlots tests (none existed) and a `trackNodePrice`
reactivity test. Drafts `docs/architecture/node-data-store.md` for the
next phase.
- **Not removed**: the `node:slot-links:changed` emitters and trigger
type entries, the `input.link` mirror itself, the computation-path
`inp.link` reads in `useNodePricing.buildJsonataContext` (migrated in
#13498 alongside the mirror deletion), and the `node:slot-label:changed`
handler — those belong to the Slot extraction / nodeDataStore phases.
## Review Focus
- The node-removal refresh-all loop deletion (own commit) — originally
shipped as a regression fix; gated locally on the vue-nodes legacy
widget e2e spec plus the full vueNodes suite (126 passed).
- Pricing badges previously only re-evaluated for widgeted inputs (the
trigger's gate); linkStore queries now also cover non-widgeted pricing
inputs — a correctness improvement, not parity.
🤖 Generated with [Claude Code](https://claude.com/claude-code)
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Co-authored-by: Claude Fable 5 <noreply@anthropic.com>
