Resolve highlight runs one at a time without the formatting-state query cap.
Pin mixed and inherited tails at 10000/10001/10002 runs, including Undo/Redo.
Document the changed command/session/helpers and explicit palette setter behavior.
Validation: red regression at10001 runs; all3 highlight tests pass after fix.
Full cargo xtask ci passed all8 gates:3963 passed,0 failed,4 existing ignored.
RUST_TEST_THREADS=1. Local named-function doc audit:13/13 documented; CodeRabbit
uses its own analyzer. Native Word comparison remains pending.