Sweep outstanding.md for 0.18.2

Adds the release's line to the sweep notes at the head: FR-CULL-13's
write-path half and NFR-ARCH-1's executors, which now have entries, and
three things that closed without ever having had one — a mask layer's
film settings (FR-DEV-3f), hot and dead photosites repaired before the
demosaic (FR-RAW-3, with the defect-map reader still unwired), and the
tablet's scroll cue already described in §4a.

docs/dev/outstanding.md

@@ -38,6 +38,14 @@ work of 0.15.0 and 0.16.0 left open.
 in §5 is rewritten around what the Flatpak has still not shown; albums brought the first SAF code,
 which FR-PLAT-AND-1's entry now describes, along with why its new tag overstates it.
 
+**And for 0.18.2.** FR-CULL-13's write-path half is held by a test now, and §2 records the evidence
+half it leaves; NFR-ARCH-1's executors are named and guarded but not pooled, recorded in §4. Three
+things closed without having had an entry: a mask layer's film settings, which the panel offered
+and which moved nothing until 0.18.2 (FR-DEV-3f); hot and dead photosites, repaired on the mosaic
+before the demosaic, for Bayer and X-Trans alike and with no setting (FR-RAW-3; the defect-map
+reader in `dr-decode` is still not wired in, and a CR2 carries no map for it to read); and the
+tablet's scrollers, which §4a now describes.
+
 ---
 
 ## 1. Plugins — post-v1 since 2026-09-19