switch terminal colorscheme to Plan 9 palette, set border to 4px

Migrate to st-flexipatch with sixel support

Switch from manually patched st to st-flexipatch (bakkeby/st-flexipatch).
This uses preprocessor directives in patches.h to toggle patches at
compile time, making it much easier to add/remove features.

Enabled patches:
- alpha (transparency)
- anygeometry, anysize (dynamic borders)
- blinking_cursor
- boxdraw (box-drawing chars)
- clipboard
- columns (no text cut on resize)
- copyurl
- externalpipe
- font2 (fallback fonts)
- iso14755 (unicode input)
- ligatures (HarfBuzz)
- newterm (spawn in cwd)
- scrollback + scrollback_mouse
- sixel (NEW - for manga-tui image support)
- swapmouse
- sync
- xresources + xresources_reload

To toggle patches: edit patches.h and rebuild.
See README.md for documentation on the preprocessor system.

Set alpha to 0.8 for transparency

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

Add Ctrl+C and Ctrl+V keybindings for copy/paste

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

Merge pull request #71 from saifshahriar/main

Fix `<del>` key not working in shell

Fix `<del>` key not working in shell

Previously `<del>` key was not working inside (neo)vim or nano (see issue #69).
PR #70 fixed, but caused another issue where `<del>` not functioning in a shell
prompt

Merge pull request #70 from saifshahriar/main

Bug Fix: Pressing <Del> simulates <Backspace> mentioned in #69

Bug Fix: Pressing <Del> simulates <Backspace> mentioned in #69

Merge pull request #62 from rdbo/delete-key-fix

Fixed delete key not doing anything

fixed delete key not deleting

Merge pull request #33 from DEliasVCruz/blinkcursor

feat: add blinking cursor patch support

fix: fix cursors blink

feat: add blinking cursor patch

Merge pull request #27 from Jipok/patch-1

Change shortcut for unicode input

Change shortcut for unicode input

re-add many patches , bump to 0.8.4 | This isnt based on luke smiths build :D

add patch_column patch

default st

change highlight colors

rm some stuff