feat(zeph-tui): unify Ctrl+C semantics for interrupt and quit#6653
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Ctrl+C now cancels the current agent turn immediately when the agent is busy, moved from Esc which was too easy to trigger by reflex and silently aborted running turns. When the agent is idle, a single Ctrl+C no longer quits outright: it arms a ~500ms double-press window and shows a status-bar hint; a second Ctrl+C within the window quits, a later press re-arms instead. q and /quit are unaffected.
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July 22, 2026 16:00
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Summary
Press Ctrl+C again to exitin the status bar; a second press within the window quits, a later press re-arms instead.q//quit(immediate quit) are unaffected.anim_tick()clock (noInstant::now()/SystemTime::now()on the key-decode path), keeping the behavior deterministically testable.Closes #6646
Test plan
cargo +nightly fmt --checkcargo clippy --profile ci --workspace --all-targets --features "desktop,ide,server,chat,pdf,scheduler,testing" -- -D warningscargo nextest run --config-file .github/nextest.toml --workspace --features "desktop,ide,server,chat,pdf,scheduler" --lib --bins— 15071 passedcargo doc --no-deps --workspace --features "desktop,ide,server,chat,pdf,scheduler"(rustdoc gate) — cleancrates/zeph-tui/src/app/tests.rs,crates/zeph-tui/src/widgets/status.rs,crates/zeph-tui/src/widgets/input.rscovering: single vs double Ctrl+C while idle, exact double-press window boundary, Ctrl+C cancels a busy turn immediately, cancel clears the pending quit window (no stale-window carryover), Esc no longer cancels a busy turn, status-bar hint appears/expiresspecs/011-tui/spec.md,.local/testing/playbooks/tui.md,.local/testing/coverage-status.md,CHANGELOG.md