docs: phone report 2026-09-07 night -- catching a fling, silent Copy report, third-party debug flooding the ring

Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>

docs/IRIS_TODO.md

@@ -1070,3 +1070,45 @@ do not duplicate it there.
   drowned in per-frame `debug!` lines that predated this pass) is fixed
   in the same change -- see RUST.md's section for which four call
   sites.
+
+## From the phone, 2026-09-07, night (build 92985ba, ai-app-bench bf2088b)
+
+Iris pasted a full Copy report (Mali-G715 Vulkan, 2.55, 120Hz). What it
+showed, beyond her words:
+
+- [ ] **"Sometimes when I try to catch it while it's still moving
+  (particularly if I drag) then it fails to stop & snap to where finger
+  is."** The report's release lines show catches ending as
+  `v=-41`/`v=-274` pans, so the gesture *does* reach `Panning`, but the
+  content under the finger does not follow it while the fling is still
+  running and the slop has not been crossed. Compose: a down while
+  `isScrollInProgress` stops the fling *at the down* and starts the
+  drag immediately with no touch slop (`scrollable`'s
+  `startDragImmediately = isScrollInProgress`); the content is pinned to
+  the finger from the first sample. Port that: `PressStart` on a list
+  with a live fling ends the fling on that sample and enters `Panning`
+  without waiting for `DRAG_SLOP`; a release with no movement is then a
+  `Released(None)`, not a tap (Compose does not deliver a click either).
+  Layer-1 test on a flick followed by a down + small drag 150 ms later:
+  offset tracks the finger sample-for-sample from the down.
+- [ ] **"The copy report button seemed impossible to hit until I hit the
+  diagnostics one."** Not hit-testing: the button logged `iris bench
+  report: nothing to copy -- run the benchmark first` six times and did
+  nothing on screen. A control that silently declines is the UI_RULES
+  failure "a failure is reported where it happened": Copy report must
+  always copy something -- the diagnostics and the log with a first line
+  saying no benchmark has run -- and never depend on another button
+  having been pressed first.
+- [ ] **"The logs seem way too big to send in this message box, causes a
+  lot of lag."** Two causes. (1) The ring was 1339 lines of `naga::front`
+  / `wgpu_core` / `jni` DEBUG output with 4050 dropped: the ring logger
+  accepts every crate at Debug, and the trace gate (992c472) only covers
+  iris's own lines. The ring must take Debug only from `iris`/`client_core`
+  targets when trace is on, and Info and above from everything else --
+  one filter at the ring, not per callsite. (2) Copy report appends the
+  whole ring. It should append the last ~150 lines and a first line
+  saying "N earlier lines omitted; full log in Dev Updater's Runtime
+  tab" -- the full ring is what the devlog provider is for.
+- [x] Keyboard: the report shows `ime_bottom=891 ime_visible=true` then
+  back to 0 on the phone, so the insets now arrive with a height; the
+  push-up was not reported broken this time.

docs/RUST.md

@@ -706,6 +706,12 @@ closes it.
   APK installable (648 MB) -- RUST.md's logging section names both.
 - [ ] Input-event and timing instrumentation into the log ring, copied
   by the report button. After the logging route lands (same ring).
+- [ ] Catch-a-fling: down during a fling stops it at the down and drags
+  with no slop (docs/IRIS_TODO.md, night). Opus, next slot; uses the
+  layer-1 harness.
+- [ ] Report hygiene: ring takes Debug only from iris targets, Copy
+  report always copies and trims the log (docs/IRIS_TODO.md, night).
+  Sonnet, with the header item below (same file, `bench_client.rs`).
 - [ ] Bench app header: four controls no longer fit at 1080px and the
   devlog agent shrank the label type 18 -> 13 to make room (UI_RULES:
   never shrink text to fit). Put the controls in two rows or make the