Grok round 5 found:
1. examples/games.yaml was actually src/main.rs (227 lines of clap
CLI; my round-4 Item 4 commit message was wrong). Replaced with
a real seed YAML. The example shows the env format as
[[KEY, VALUE], ...] (a list of pairs), NOT KEY=*** (serde_yaml
will not parse KEY=*** into Vec<(String, String)>).
3. App.pending_ipc was written by Free-mode buttons but never
drained by the main loop. Replaced with direct self.ipc(...)
calls. Hoisted the closure borrow by collecting verbs into a
Vec<(&str, u32)> and draining after the slots borrow is
released. Dropped the pending_ipc field + App literal init.
8. Doc residue: passthrough / window_match claims still in
README.md, CHANGELOG.md, docs/DESIGN.md. Updated README.md to
point at round-4 Item 6 + Item 3. Added a round-4 section at
the top of CHANGELOG.md. Dropped the duplicate passthrough
bullet in docs/DESIGN.md.
10. Dead passthrough_id helper in hotkey.rs (unused after the
passthrough feature dropped in round-4 Item 6). Dropped the
function + its doc comment.
cargo test 103/103; clippy clean.
