feat(shell): add poke function and update fish-deps for ov and yay

- Add poke: touch with automatic parent directory creation; prints
  colored notice when new dirs are created; handles multiple file args
- Refactor config.fish CachyOS override block: consolidate copy into
  the erase+source loop alongside ls/lt/cleanup
- fish-deps: replace most with ov (cargo crate + AUR pkg); add yay as
  rec dep with yay-build special (paru -S yay or AUR makepkg); add
  update handling for yay-build in _fish_deps_update
- README: document poke in Directory & File Listing table

functions/poke.fish

@@ -0,0 +1,17 @@
+# Copyright (C) 2026 Rootiest
+# SPDX-License-Identifier: AGPL-3.0-or-later
+
+function poke --description 'touch with automatic parent directory creation'
+    if test (count $argv) -eq 0
+        echo (set_color red)"poke: no file specified"(set_color normal) >&2
+        return 1
+    end
+    for _path in $argv
+        set -l _dir (dirname $_path)
+        if not test -d $_dir
+            mkdir -p $_dir
+            and echo (set_color --bold cyan)"Created: "(set_color cyan)"$_dir"(set_color normal)
+        end
+        touch $_path
+    end
+end