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/configs/profiles/common.lua

@@ -0,0 +1,31 @@
+-- Shared profile logic: given three outputs, lay out the 30 workspaces.
+--
+-- 1-10  -> MONITOR1, 11-20 -> MONITOR2, 21-30 -> MONITOR3.
+-- The first workspace of each block is that monitor's default.
+-- Was: configs/workspaces.conf (byte-identical on both machines, because it
+-- only ever referred to $MONITOR1/2/3).
+
+local M = {}
+
+function M.workspaces(monitors)
+    local blocks = {
+        { first = 1,  last = 10, monitor = monitors[1] },
+        { first = 11, last = 20, monitor = monitors[2] },
+        { first = 21, last = 30, monitor = monitors[3] },
+    }
+
+    for _, block in ipairs(blocks) do
+        for ws = block.first, block.last do
+            hl.workspace_rule({
+                workspace = tostring(ws),
+                monitor   = block.monitor,
+                default   = (ws == block.first),
+            })
+        end
+    end
+end
+
+-- Gaming workspaces (10 / 20 / 30) had these commented out in workspaces.conf:
+--   no_rounding = true, decorate = false, gaps_in = -1, gaps_out = 0, no_border = true
+
+return M

hypr/configs/profiles/init.lua

@@ -0,0 +1,35 @@
+-- Machine profile selection.
+--
+-- Each profile owns the two things that genuinely differ between machines:
+-- the monitor layout and the workspace-to-monitor assignment.
+--
+-- Selection order:
+--   1. $HYPR_PROFILE, if set  (e.g. `HYPR_PROFILE=laptop Hyprland`)
+--   2. hostname match
+--   3. fallback: "laptop"
+--
+-- To add a machine: create configs/profiles/<name>.lua and add it to `byHost`.
+
+local byHost = {
+    mainPC = "pc",
+}
+
+local fallback = "laptop"
+
+local function hostname()
+    -- Cheap file read at config-load time (not in a bind callback, so it is
+    -- safe to block on). os.getenv("HOSTNAME") is not reliably exported.
+    local f = io.open("/etc/hostname")
+    if not f then return nil end
+    local h = f:read("l")
+    f:close()
+    -- strip stray whitespace
+    return h and h:match("^%s*(.-)%s*$") or nil
+end
+
+local host    = hostname()
+local profile = os.getenv("HYPR_PROFILE") or byHost[host] or fallback
+
+require("configs.profiles." .. profile)
+
+return { name = profile, host = host }

hypr/configs/profiles/laptop.lua

@@ -0,0 +1,22 @@
+-- Profile: laptop
+-- Internal hidpi panel plus two external 1080p outputs.
+-- Was: the committed configs/monitors.conf in the dotfiles repo.
+
+local common = require("configs.profiles.common")
+
+local MONITOR1 = "eDP-1"     -- internal panel
+local MONITOR2 = "DP-1"      -- second
+local MONITOR3 = "HDMI-A-1"  -- third
+
+-- Main Monitor
+hl.monitor({ output = MONITOR1, mode = "3072x1920@120.00", position = "0x0", scale = 2.0, vrr = 1 })
+
+-- Second Monitor
+hl.monitor({ output = MONITOR2, mode = "1920x1080@60.00", position = "0x1920", scale = 1.0 })
+-- FSIT: position = "-1920x-800"
+-- mirror = MONITOR1
+
+-- Third Monitor
+hl.monitor({ output = MONITOR3, mode = "1920x1080@60.00", position = "0x1920", scale = 1.0, mirror = MONITOR1 })
+
+common.workspaces({ MONITOR1, MONITOR2, MONITOR3 })

hypr/configs/profiles/pc.lua

@@ -0,0 +1,24 @@
+-- Profile: pc  (hostname "mainPC")
+-- Three 1080p outputs, no internal panel.
+-- Was: the live ~/.config/hypr/configs/monitors.conf on this machine.
+
+local common = require("configs.profiles.common")
+
+local MONITOR1 = "DP-1"      -- main
+local MONITOR2 = "HDMI-A-1"  -- second
+local MONITOR3 = "DP-2"      -- third
+
+-- Main Monitor
+hl.monitor({ output = MONITOR1, mode = "1920x1080@120.00", position = "0x0", scale = 1.0 })
+-- add vrr = 1 to the above if wanted
+
+-- Second Monitor
+hl.monitor({ output = MONITOR2, mode = "1920x1080@60.00", position = "-1920x280", scale = 1.0 })
+-- FSIT Arbeitsplatz: position = "-1920x-800"
+-- mirror = MONITOR3
+
+-- Third Monitor
+hl.monitor({ output = MONITOR3, mode = "1920x1080@60.00", position = "0x1920", scale = 1.0 })
+-- mirror = MONITOR1
+
+common.workspaces({ MONITOR1, MONITOR2, MONITOR3 })