Propagate OMARCHY_PATH and PATH to Hyprland-spawned processes; dev-link-aware paths.lua

Two related fixes for omarchy-dev-link to actually affect Hyprland keybinds:

default/hypr/paths.lua: prefer /etc/omarchy.conf over the process env.
hyprctl setenv updates Hyprland's process env, but the user-reported case
shows it doesn't reach bind-exec dispatchers because their env is
captured at config-load time. Reading the dev-link conf directly means
paths.omarchy_path is correct on every hyprctl reload regardless of
whether the launching Hyprland session re-read its env.

default/hypr/envs.lua: explicitly hl.env("OMARCHY_PATH", ...) and
hl.env("PATH", "$OMARCHY_PATH/bin:$PATH") so keybind dispatchers (and
everything else spawned by Hyprland) inherit the dev-link values. PATH
is built with a dedup pass so reloads don't accumulate the bin/ prefix.

Tested locally: paths.lua reads /etc/omarchy.conf correctly; lua syntax
of both files validates with luac -p.

default/hypr/envs.lua

@@ -24,6 +24,25 @@ hl.env("XDG_SESSION_DESKTOP", "Hyprland")
 -- Use XCompose file.
 hl.env("XCOMPOSEFILE", paths.home .. "/.XCompose")
 
+-- Propagate OMARCHY_PATH and PATH to processes spawned by Hyprland (keybinds,
+-- dispatchers, autostart). hyprctl setenv doesn't reach the env captured for
+-- bind exec at config-load time, so omarchy-dev-link reaches this via
+-- hyprctl reload re-running envs.lua with the new paths.omarchy_path.
+hl.env("OMARCHY_PATH", paths.omarchy_path)
+
+-- Prepend $OMARCHY_PATH/bin to PATH, deduping any prior occurrence so
+-- reloads don't accumulate duplicates.
+local bin_dir = paths.omarchy_path .. "/bin"
+local current_path = os.getenv("PATH") or "/usr/local/bin:/usr/bin"
+local kept = {}
+for entry in current_path:gmatch("[^:]+") do
+  if entry ~= bin_dir then
+    table.insert(kept, entry)
+  end
+end
+table.insert(kept, 1, bin_dir)
+hl.env("PATH", table.concat(kept, ":"))
+
 hl.config({
   xwayland = {
     force_zero_scaling = true,