v0.1.4: Add view history navigation (ESC goes back instead of quit)

- Add GoBack action and view_history stack for hierarchical navigation
- ESC now goes back to previous view instead of quitting the app
- When at root view with empty history, ESC quits as before
- Update help text to show "Esc:back" instead of "Esc:quit"

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

v0.1.3: Add new features and fix input dialog bug

Features:
- Add List Buffers: show open nvim buffers
- Add Find Files: fzf + bat file finder
- Add new tmux keybindings (Prefix + w/f/d)
- Reorganize command palette order

Bug fixes:
- Fix input dialog not responding to ESC/Enter
- Fix arrow key navigation (now works without Ctrl)

New keybindings:
- Prefix + w → Worktrees
- Prefix + f → Find Files (fzf)
- Prefix + d → Git Diff

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

Fix keyboard input not working (ESC, Enter) in session picker

Filter crossterm key events to only process KeyEventKind::Press.
Crossterm 0.28+ sends press, repeat, and release events by default,
which was causing keyboard input to malfunction.

Also initialize command palette based on initial view.

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

Bump version to 0.1.1

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

Initial commit: pman v0.1.0

Tmux Session/Worktree Manager TUI with:
- Session picker with fuzzy search
- Command palette for quick actions
- Git worktree integration
- Tmux keybinding installation

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>