Merge remote-tracking branch 'origin/rustify' into worktree-agent-a6e37a2335f436d08

docs/RUST.md

@@ -63,6 +63,14 @@ closes it.
       next tap anywhere panics. Findings 2–5 are `debug_assert!`s on
       invariants, 8 and 10 are the missing tests. Commit the review file
       with the fixes.
+- [ ] **Iris's 11:39 phone report on the 02:07 build** (four items,
+      verbatim in `IRIS_TODO.md`'s "From the phone, 2026-09-06, 11:39"):
+      composer floating two thirds down the screen at launch with black
+      below it; a swipe starting on the composer held until the finger
+      leaves it; no fling (expected, `DragGesture` unmerged); text still
+      lost on app-switch on the phone despite the emulator-verified
+      atlas reset. The first and last are the same class as the next
+      box and go to that agent; the middle two are the merge box's.
 - [ ] **Stale primitives and invisible composer text** — the header drawn
       twice after a keyboard resize, the `Compacted:` row drawn twice on
       Iris's phone, and typed text never appearing (P0 box item 2). All