refactor(hypr): namespace config under sjb/

Move the Hyprland Lua modules into config/hypr/sjb/ with init.lua as the
entry point, so the whole config tree can be symlinked per-file and the
unmanaged hypr*.conf files keep their own symlinks. Add an sjb block that
requires the new entry point.

While here: bind the second Lenovo L15, force 3440x1440@144 on the
MAG342CQR, use the named 2fg scroll method, and drop dead locals.

Switch the skills mise task to clone/pull SjB/skills into
~/.local/share/skills and symlink it, replacing the npx skills adds.

config/mise/config.toml

@@ -52,8 +52,9 @@ run = [
 
 [tasks.skills]
 run = [
-    'npx skills add SjB/skills',
-    'npx skills add mattpocock/skills'	
+    "test -d ~/.local/share/skills || git clone https://github.com/SjB/skills.git ~/.local/share/skills",
+    "git -C ~/.local/share/skills pull --rebase",
+    "ln -snf ~/.local/share/skills/skills ~/.agents/skills"
 ]
 
 [tasks.herdr_setup]