feat: add deterministic tape playback and pointer-aware automation

[arimxyer]

Summary

• keep named live PTY sessions available across CLI invocations
• add structured click, right-click, move, and drag controls for direct sessions and workspace targets
• add deterministic .tape playback with Setup, Launch, Cleanup, waits, receipts, bounded process groups, and stable JSON output
• record and render optional pointer evidence, including persistent cursor overlays and tape movement
• add scripting ergonomics for repeatable demos and automated TUI verification
• validate live mouse targets atomically in the daemon against the current viewport before PTY mutation

Safety and compatibility

• protocol v9 adds structured mouse mutations without changing legacy raw Send behavior
• older daemons return an actionable restart-required diagnostic instead of silently falling back
• default v1 recordings and pointer-enabled v2 recordings remain compatible
• tape action output is drained fairly, bounded by deadlines, and cleaned up on setup or action failure
• non-UTF-8 JSON receipt paths fail during preflight before lifecycle side effects
• click and drag endpoints are validated for direct sessions, selected panes, stable pane IDs, and named-window active panes

Verification

Pinned clean-room environment:

• Node 24.19.0
• npm 11.17.0
• Bun 1.3.14
• Rust and Cargo 1.93.1
• Zig 0.15.2

Commands completed successfully:

• cargo fmt --all -- --check
• cargo test --all-targets (211 passed, 1 manual benchmark ignored)
• cargo clippy --all-targets --all-features -- -D warnings
• cargo build --release
• bun run test:npm
• bun run build:npm
• bun run validate:npm
• cargo package --list
• cargo package

Adversarial resize testing verifies that mouse mutations ordered after a resize to a 1x2 viewport are rejected before PTY input, with an empty PTY log. Protocol-v8 compatibility testing verifies the restart diagnostic for structured mouse while unchanged raw Send remains accepted.

Release

Includes a minor changeset describing deterministic playback, structured pointer behavior, bounded actions, and viewport-safe input.

[arimxyer]

@kitlangton @jlongster Hey y'all just wanted to get your eyes on this. Or your bots' eyes on this.

[arimxyer]

@kitlangton I saw the inclusion in the latest PR. Let me know if you want me to sync my fork.

[kitlangton]

Landed the background-daemon detachment fix and adapted regression intent in #26. Named sessions now survive launcher-group SIGHUP after both start and restart; explicit stop still shuts down the application. The real-PTY regressions and both Linux CI runs pass.

Thanks for including this fix. Tape playback and pointer automation remain separate in this PR; no removed workspace support was restored.

[kitlangton]

The background-session lifetime fix is now released in Terminal Control 1.1.1 on crates.io and npm. The public Cargo/Bun/Node installed CLIs each pass the start/restart launcher-hangup and explicit-stop regressions, including ownership-checked fixture cleanup.

Tape playback and pointer automation remain separate in this PR.