improve(ui): improvements to formatting, colors, spacings, shortcut hints, readability

[wombatinua]

Summary

Improved the user interface for better usability and more professional look:

• removed current time from header (seems unnecessary)
• removed most of emoji icons (looks less distracting)
• changed pinned host indicator to red dot
• reworked server presentation line (distinct colors, improved layout, spacings, removed bold lines)
• reworked "Last SSH" part of server line
• reworked server Details pane to look more clear
• help section header tweaks
• changed highlight colors to terminal defaults (more consistent look)
• reworked top and bottom hints bars (more distinct keys, left alignment)
• reworked save dialogue hints
• cleared headings in server edit UI

Please take a look, this is great software and it deserves to look better!

[Adembc]

Hi @wombatinua . Thanks a lot for your contribution!
The base branch (main) has changed since this PR was opened, and now there’s a small conflict. Could you please rebase your branch onto the latest main.

[wombatinua]

@Adembc Hey, its done. Is it OK now? Do you like the interface changes, anyway? I removed columns in server list entity, as those columns do not work across different shells/terminals consistently (no columns in zsh/iTerm2). Plus in narrow terminal screens they look bad.

[Adembc]

The colors look better, but the table formatting could be improved.

Right now the server list feels misaligned:

• Hostnames have variable lengths, so IP addresses don’t line up vertically.

• Metadata like 3h ago / 31d ago floats at the end of the line, which makes the list harder to scan.

It would be much easier to read if the list were structured more like a proper table with fixed-width or aligned columns.

[wombatinua]

Table formatting was removed by error as it was not working in iTerm2 / zsh and I didn’t know it existed. I will make a change to get this back, just FYI — this feature is not consistent across different environments.