chore: migrate omarchy state from ~/.config to ~/.local/state

Move all omarchy runtime state (themes, backgrounds, current theme)
from ~/.config/omarchy/current to ~/.local/state/omarchy/current
to keep the config dir free of generated files. Add mise task for
recreating symlinks and update credential helpers for tea.

config/hypr/hyprland.lua

@@ -530,8 +530,8 @@ hl.bind(HYPR .. "S", dispatch_focus_or_launch({
 }), { description = "Music" })
 
 hl.bind(HYPR .. "F", dispatch_focus_or_launch({
-    match = "pcmanfm",
-    cmd = "pcmanfm",
+    match = "strata",
+    cmd = "gtk-launch io.github.lgse.Strata.desktop",
 }), { description = "File Manager" })
 
 -- Gestures