feat(scanner): add native artifact pipeline

Add native IK-style capture processing, Artifact Inventory, explicit promotion and single-result review. Confirm the three live OCR corrections in the eval corpus and preserve extraction/value separation.

electron/services/inputHelperPowerShellFallback.ts

@@ -87,11 +87,9 @@ function Send-MouseInput {
   return [Native.InputHelper]::SendInput(1, [Native.InputHelper+INPUT[]]@($mouseInput), $inputSize)
 }
 
-# Matches Inventory Kamera exactly (see docs/DECISIONS.md ADR-008): it moves
-# with bare SetCursorPos, then clicks via the InputSimulator library's
-# Mouse.LeftButtonClick(), which sends button-down and button-up as ONE
-# SendInput call (two INPUT structs in the same array) - back-to-back with no
-# artificial delay between them, unlike two separate SendInput calls with a
+# Uses bare SetCursorPos, then sends button-down and button-up as ONE SendInput
+# call (two INPUT structs in the same array) - back-to-back with no artificial
+# delay between them, unlike two separate SendInput calls with a
 # Start-Sleep in between. Returns the number of injected events (2 = ok).
 function Send-MouseClickBatch {
   $down = New-Object Native.InputHelper+INPUT
@@ -208,7 +206,7 @@ function Find-GenshinWindow {
 # Plain SetForegroundWindow from this background helper process is silently
 # refused by Windows' foreground lock. Attach our thread's input queue to the
 # target (and current foreground) window thread and clear the lock timeout, so
-# the foreground change is honored - the same technique Inventory Kamera uses.
+# the foreground change is honored.
 function Force-Foreground {
   param([IntPtr]$hwnd)
   $current = [Native.InputHelper]::GetCurrentThreadId()
@@ -313,13 +311,10 @@ while ($true) {
         }
         $targetX = [int]$cmd.x
         $targetY = [int]$cmd.y
-        # Matches Inventory Kamera's verified-working sequence exactly: bare
-        # SetCursorPos immediately followed by a click, with NO extra move
-        # event and NO artificial delay between moving and clicking - IK's
-        # Navigation.Click(x, y) does SetCursor() then Click() back-to-back,
-        # zero gap. Settling delays only happen after the click, in the scan
-        # loop. Down+up are sent as one SendInput call (see
-        # Send-MouseClickBatch), matching InputSimulator.Mouse.LeftButtonClick().
+        # Bare SetCursorPos immediately followed by a click, with NO extra move
+        # event and NO artificial delay between moving and clicking. Settling
+        # delays only happen after the click, in the scan loop. Down+up are sent
+        # as one SendInput call (see Send-MouseClickBatch).
         [Native.InputHelper]::SetCursorPos($targetX, $targetY) | Out-Null
         $point = Get-CursorPoint
         $onTarget = (([Math]::Abs($targetX - $point.X) -le 2) -and ([Math]::Abs($targetY - $point.Y) -le 2))