hyprland: migrate to Lua config, add pc/laptop profiles

hyprlang has been deprecated since Hyprland 0.55 and is dropped after 1-2
releases; this box runs 0.56.2. Migrate Hyprland's own config to Lua and
split the machine-specific parts into profiles.

Config:
- hyprland.lua entry point; the .conf tree is left in place as a rollback
  path (Hyprland prefers hyprland.lua and only decides at startup).
- Each require() is its own Lua scope, so hyprlang's global "$VAR" no longer
  crosses files: vars.lua / apps.lua / theme/colors.lua return tables.
- hypridle, hyprlock, plugins/* and pyprland.toml stay hyprlang -- the other
  hypr* tools keep it.

Profiles (configs/profiles/):
- pc     -> DP-1 / HDMI-A-1 / DP-2, all 1920x1080
- laptop -> eDP-1 3072x1920@120 scale 2.0, DP-1, HDMI-A-1 mirroring eDP-1
- Each owns its monitors and workspace-to-monitor mapping; common.lua
  generates the 30 workspace rules from the three outputs.
- Selected by $HYPR_PROFILE, else hostname (mainPC -> pc), else laptop.

Fixes:
- pyprland.toml called swww, which is not installed; the wallpaper backend
  here is awww. The rotation timer failed silently and both outputs stayed
  at color: 000000.
- XF86InputRaiseVolume / XF86InputLowerVolume are not real keysyms (no
  XF86Input* family in xkbcommon). They were dead in .conf too; hyprlang
  ignored them silently, hl.bind rejects them. Commented out.
- SUPER+SHIFT+R was bound twice (notification reload + bar reload). hyprlang
  ran both; in Lua the second would shadow the first, so they are merged.
- The waybar layer rule set no effects and was a no-op; dropped.
- Polkit autostart now picks hyprpolkitagent or polkit-gnome by what is
  installed, so one file works on both machines.

Verified with `Hyprland --verify-config` on both profiles (config ok).

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01StGBghPW9Dm7z7uj2VNWHr

hypr/theme/colors.lua

@@ -0,0 +1,48 @@
+-- Was: theme/colors.conf (Catppuccin Macchiato)
+--
+-- hyprlang needed a paired "$nameAlpha" bare-hex variable for every colour so
+-- it could string-splice alpha on. In Lua we keep only the hex and build
+-- colour strings with the helpers below.
+
+local hex = {
+    rosewater = "f4dbd6",
+    flamingo  = "f0c6c6",
+    pink      = "f5bde6",
+    mauve     = "c6a0f6",
+    red       = "ed8796",
+    maroon    = "ee99a0",
+    peach     = "f5a97f",
+    yellow    = "eed49f",
+    green     = "a6da95",
+    teal      = "8bd5ca",
+    sky       = "91d7e3",
+    sapphire  = "7dc4e4",
+    blue      = "8aadf4",
+    lavender  = "b7bdf8",
+    text      = "cad3f5",
+    subtext1  = "b8c0e0",
+    subtext0  = "a5adcb",
+    overlay2  = "939ab7",
+    overlay1  = "8087a2",
+    overlay0  = "6e738d",
+    surface2  = "5b6078",
+    surface1  = "494d64",
+    surface0  = "363a4f",
+    base      = "24273a",
+    mantle    = "1e2030",
+    crust     = "181926",
+}
+
+local M = { hex = hex }
+
+-- Opaque colour, e.g. M.rgb("lavender") -> "rgb(b7bdf8)"
+function M.rgb(name)
+    return "rgb(" .. hex[name] .. ")"
+end
+
+-- Colour with an alpha suffix, e.g. M.rgba("lavender", "69") -> "rgba(b7bdf869)"
+function M.rgba(name, alpha)
+    return "rgba(" .. hex[name] .. alpha .. ")"
+end
+
+return M