Bring the README's features and standing up to 0.19.0

The develop paragraph counted eighteen operations fused into one
dispatch, before the view transform made nineteen and a detail stage
made the fusion two passes, and said nothing of editing on the scene
with Tone Mapping last. Presets are now a menu on the tool rail, a
panorama frame can be left out, and a linear DNG larger than one
texture develops. The requirement count and coverage are
traceability.md's (193, 85.5%), and tiled rendering is no longer
wholly unbuilt. outstanding.md gains its sweep note for 0.19.0 and
says in §11 what the frame choice changed.

docs/dev/outstanding.md

@@ -46,6 +46,13 @@ before the demosaic, for Bayer and X-Trans alike and with no setting (FR-RAW-3;
 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.
 
+**And for 0.19.0.** D19 rebuilt the develop pipeline around one rule — scene-linear from the camera
+matrix to a single view transform, last ([architecture.md §6.14](architecture.md)) — which neither
+closed nor opened an entry here: FR-DEV-3e's per-body base curves are retired by decision rather than
+left outstanding, and its DCP half stays deferred as before. §4's FR-DSP-2 and NFR-RES-2 entries
+record the one case that now tiles, a linear DNG larger than one texture, and §11 the merge's frame
+choice, which changes how FR-MRG-5 is met rather than whether.
+
 ---
 
 ## 1. Plugins — post-v1 since 2026-09-19
@@ -576,7 +583,9 @@ whether something *should* be built — which is the opposite of the order §9 a
 and focus stacking there with their data model decided. Its clauses entered the register with no
 code behind them, which is why the coverage figure fell from 83.0% to 77.2% on that day — and the
 panorama was then built in the same week: alignment, projections, the chunked composite written as
-a DNG beside its sources, the auto-crop and the model's border fill.
+a DNG beside its sources, the auto-crop and the model's border fill. In 0.19.0 a frame that cannot
+be placed no longer ends the job: it is named on its row and the merge waits for it to be unticked,
+and any frame can be left out that way without reading the rest again (panorama.md §15).
 [panorama.md](panorama.md) §11 and §13 are where it stands.
 
 Three clauses carry no tag: