docs: Milestone 1 ends at step 8; separate device draft from Woo draft

docs/CAPTURE.md

@@ -1,6 +1,7 @@
 # Capture
 
 Runs in the browser on phone and PC.
+This increment ends at step 8. It does not create a WooCommerce product.
 
 ## Setup
 
@@ -22,18 +23,19 @@ The app expects that sheet. Background removal keys green or black. Other backgr
 5. User enters length `L` in inches (1/8 in steps) and thickness (1/8 in steps).
 6. App sets `scale = longest_axis_px / L`.
 7. App computes widths, sqft, and bdft from the mask, and writes the inventory PNG.
-8. User sees the PNG and the numbers.
+8. User sees the PNG and the numbers. Stop.
 
-## Draft
+## Device draft
 
 One in-progress slab is stored on the device.
+This is not a WooCommerce draft.
 
 On open or refresh, if that draft exists, the user chooses Continue or Start fresh.
 
-- Continue restores the slab at the last approved step.
-- Start fresh discards the draft and returns to Setup.
+- Continue restores the slab at the last approved step, including step 8.
+- Start fresh discards the device draft and returns to Setup.
 
-After a successful Woo create, the device draft is cleared.
+Milestone 3 clears the device draft after Woo create. That is outside this increment.
 
 ## Measurements