# PUA Loop — status (BadNote 整体重构)

## Oracle: `flutter analyze lib/editor && flutter test` → GREEN, exit 0, 145/145.

## Delivered this loop (all committed + pushed, 6829076..eedb52d)
P0 completion + P0.5 automatable layer + bonus pure cores:
- 6829076 zoom absolute-snapshot fix + pen streamline (P0/live)
- a48c0e7 input_arbiter (P0 step4)
- d500872 export single-source recipe / R7 (P0 step7)
- f64e656 SaveScheduler tests (P0 step8)
- eca5141 live canvas → revision-gated ui.Picture cache (P0 step3)
- 07b543f PageTileCache DPI-bucketed (P0.5)
- 1a3d106 PageStackMetrics windowing (P0.5)
- 6b7cc14 PageDocumentSource + fit-to-width glue (P0.5)
- c03513d PdfrxPageDocumentSource + API source-pin (P0.5 step12/SF4)
- c31bfd3 navigation math current-page/scroll-clamp (P0.5)
- 852eb38 双链 link_graph pure core (F7)
- eedb52d pressure curve floor+gamma (F5)

## THE BLOCKER (honest)
The refactor's CRITICAL PATH is device validation, which only the user's Surface
can provide and which the plan ITSELF gates on:
- P0 step9: pen/palm/pinch on Surface (build eedb52d).
- P0.5 exit: crisp-at-4× + 60fps profile — no automatable acceptance test exists.
The remaining work (page_tile renderer, page_viewport WIDGET, perf bench) is
device/GPU-gated; writing it blind = a claim with no acceptance evidence.

## Options for the user
1. Device-test eedb52d (zoom/pen/render/export) → I wire the P0.5 pure pieces
   into the viewport widget and push the P0.5 device gate.
2. Tell me to keep PRE-BUILDING unwired pure cores (F6 page-map, F8 snippet
   extraction, more F5/F7) — real + tested, but NOT on the blocked critical path.
3. /pua:cancel-pua-loop to end the loop.