feat: log colorization, auto mouse toggling, external pager, and Korean keyboard support

[hunchulchoi]

This PR introduces several quality-of-life enhancements for container logs visibility, copying workflows, external pager integration, and layout compatibility.

Key Changes

1. Rule-Based Log Highlighting:

   • Implemented a parser ColoriseLog in pkg/utils/logs.go to colorize common log levels (INFO, WARN, ERROR, DEBUG) and ISO timestamps using ANSI colors.
   • Wrapped stderr output in bold ANSI red to differentiate it from stdout stream data.

2. Auto Mouse Capture Toggling (Drag to Copy):

   • When the main logs view focuses, mouse capture is automatically disabled (gocui.Screen.DisableMouse()) so users can immediately drag and select text for native copying.
   • Restores mouse capture automatically when focus leaves the main view to list panels.
   • Displays status info in the bottom panel (Mouse: OFF (Drag to copy)).

3. External Pager Integration (l Key):

   • Binds l key inside logs, containers, and services views to suspend the TUI and launch an external log viewer/pager (defined in config.yml via logs.pager, default less -R).
   • Uses temporary file logging to pipe logs dynamically, avoiding terminal input conflicts/hangs.

4. Korean Keyboard Layout Support:

   • Added a dynamic keybinding translation hook for Korean 2-Set (Dubeolsik) keyboard layout.
   • Duplicates English bindings at runtime for Korean character inputs (e.g. mapping ㄴ to s and ㄴ + Shift to S / Start) to ensure the application works seamlessly when the IME is set to Korean.

Testing

• Added unit tests for log colorizing in pkg/utils/logs_test.go.
• Added unit tests for keybinding translation mappings in pkg/gui/keybindings_test.go.
• Verified all unit and integration tests pass successfully.