feat(status): report session lifecycle state

[msmps]

Summary

• add protocol-v2 pilotty status output for running and finalized sessions
• report geometry, launch metadata, idle duration, exit details, output completeness, and retention accounting
• keep lifecycle resolution inside SessionManager, including live-name precedence over tombstones
• separate the moving current protocol from stable capability introduction versions and reject shipped v1 daemons before sending v2 commands
• update CLI help and package documentation

Verification

• cargo fmt --all -- --check
• cargo clippy --all --benches --tests --examples --all-features -- -D warnings
• cargo test --all
• cargo build
• cargo build --release
• git diff --check
• isolated release-binary dogfood for running and failed-finalized status with truncated retention evidence