feat(tmux): add compact session and pane output

[lntutor]

Summary

• add rtk tmux routing for session, pane, creation, and removal commands
• compact standard list-sessions rows while preserving custom -F formats
• trim pane padding and cap oversized capture-pane -p output with full-output recovery
• keep interactive and state-changing tmux commands as faithful passthroughs

Verification

• cargo test --all-targets --all-features
• cargo clippy --all-targets --all-features -- -D warnings
• cargo fmt --check
• git diff --check
• isolated tmux socket smoke tests for list, custom format, capture, new, and kill

Closes #2315

[CLAassistant]

All committers have signed the CLA.