vim: add plugins, tmux: status bar, fix Ctrl+A clash

- Add vim-gitgutter, vim-commentary, vim-surround via install
script
- Rebind git log widget from Ctrl+A to Ctrl+T (tmux prefix
clash)
- Add date, time, and battery indicator to tmux status
bar
- Set tmux clock colour to teal

Co-authored-by: Copilot
<223556219+Copilot@users.noreply.github.com>

install.d/25-vim.sh

@@ -0,0 +1,27 @@
+#!/usr/bin/env bash
+
+# -----------------------------------------------------------------------------
+# Description:
+#   Install vim plugins using native vim packages (pack/).
+#
+
+vim_pack_dir="$HOME/.vim/pack/plugins/start"
+mkdir -p "$HOME/.vim/pack/plugins/start"
+
+vim_plugins=(
+    "https://github.com/airblade/vim-gitgutter.git"
+    "https://github.com/tpope/vim-commentary.git"
+    "https://github.com/tpope/vim-surround.git"
+)
+
+for url in "${vim_plugins[@]}"; do
+    name=$(basename "$url" .git)
+    dest="$vim_pack_dir/$name"
+    if [[ -d "$dest" ]]; then
+        git -C "$dest" pull --quiet
+        log_pass "$name updated"
+    else
+        git clone --depth 1 --quiet "$url" "$dest"
+        log_pass "$name installed"
+    fi
+done