docs/TODO.md: Compose app crash from Iris's phone log export, reversed AnnotatedString range in ToolInput.highlighted

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

docs/TODO.md

@@ -33,3 +33,14 @@ one in place when it turns out to need a decision.
       that would work today, for Claude sessions, and it is the option that was
       not chosen.
 
+
+## From Iris's phone log export, 2026-09-07 (Compose app)
+
+- [ ] **Crash on 2026-09-03 11:40, `IllegalArgumentException: Reversed
+  range is not supported`** at `ToolInput.kt:200` (`highlighted`, inside
+  `ToolInputView` -> `RawBlock` -> `ToolCard`). An `AnnotatedString`
+  range was built with end before start while highlighting a tool
+  input. Found in the per-package system log she exported; the tool
+  input that triggered it is not in the log. Reproduce by fuzzing
+  `highlighted` with inputs whose token boundaries collapse, and guard
+  the range construction.