docs: add CLAUDE.md for AI assistant context

- Remove XMonad.Hooks.Modal and editMode functionality
- Remove XMonad.Layout.BinarySpacePartition layout
- Add window rotation (rotAllUp/Down) mirroring wezterm behavior
- Add master pane manipulation with mnemonic bindings:
  - M-C-Left/Right: control layout (shrink/expand master)
  - M-S-Left/Right: shift windows (adjust master count)
- Add master window operations on Delete key:
  - M-Delete: focus master
  - M-S-Delete: swap to master
- Add screen navigation via Navigation2D:
  - M-C-Home: focus left monitor
  - M-C-End: focus right monitor
- Fix M-a t conflict (d=dynamic tiling, t=thunar)
- Restore original ppOrder from pre-modal configuration
- Consolidate all window management on navigation layer

CLAUDE.md

@@ -0,0 +1,155 @@
+# CLAUDE.md
+
+This file provides guidance to Claude Code (claude.ai/code) when working with code in this repository.
+
+## Overview
+
+This is a personal XMonad + Xmobar configuration built as a Haskell project using Nix flakes. The project uses Relude as a custom Prelude and follows a strict, opinionated Haskell development workflow.
+
+## Build System
+
+This project uses **just** for task running and **Nix flakes** for reproducible builds:
+
+```bash
+# List available commands
+just
+
+# Build the project
+just build
+
+# Run XMonad executable
+just run xmonad
+
+# Run XMobar executable
+just run xmobar
+
+# Start REPL
+just repl
+
+# Access Hoogle documentation (serves at http://127.0.0.1:8888)
+just docs
+```
+
+### Nix Commands
+
+```bash
+# Update flake inputs
+nix flake update
+
+# Build all outputs
+nix --accept-flake-config run github:juspay/omnix ci
+
+# Run without installing
+nix run .
+
+# Enter development shell (or use direnv)
+nix develop
+```
+
+### Pre-commit Hooks
+
+Pre-commit hooks are automatically configured in the Nix shell and include:
+- **fourmolu** for Haskell formatting (with FOURMOLU_DISABLE/ENABLE pragmas where needed)
+- **nixpkgs-fmt** for Nix formatting
+- **hlint** for Haskell linting
+
+Run manually: `pre-commit run -a`
+
+## Project Structure
+
+The repository follows a standard Cabal package layout:
+
+- **`src/xmonad.hs`** - Main XMonad configuration (executable entry point)
+- **`src/xmobar.hs`** - XMobar status bar configuration (executable entry point)
+- **`src/XMonadConfig/GruvboxMaterial.hs`** - Shared color scheme module providing xmobar escape codes
+
+### Two Executables
+
+The project builds two separate executables defined in `xmonad-config.cabal`:
+
+1. **xmonad** - The window manager configuration
+2. **xmobar** - The status bar configuration
+
+Both share the `XMonadConfig.GruvboxMaterial` module for consistent theming.
+
+## Architecture
+
+### XMonad Configuration (`src/xmonad.hs`)
+
+The configuration is built compositionally using function application:
+
+```haskell
+main = xmonad
+     . docks
+     . ewmhFullscreen
+     . ewmh
+     . withNavigation2DConfig def
+     . withSB myXmobar
+     $ myConfig
+```
+
+**Key architectural components:**
+
+- **Navigation2D**: Directional window and screen navigation using arrow keys and Navigation2D module
+- **Custom keybindings**: Leader-key approach (`M-a` prefix) for spawning applications and layout switching
+- **Window manipulation**: Uses `XMonad.Actions.RotSlaves` for window rotation (mimics wezterm behavior)
+- **Layout system**: Three layouts - dynamic tiling, maximised, and fullscreen
+- **StatusBar integration**: Communicates with xmobar via `_XMONAD_LOG_1` X property
+- **Mnemonic bindings**: Control (M-C) for layout manipulation, Shift (M-S) for window operations
+
+### XMobar Configuration (`src/xmobar.hs`)
+
+Defines a status bar with:
+- System information (uname, uptime, disk usage)
+- Weather data (station YPJT)
+- Date/time
+- XMonad workspace/layout information from `_XMONAD_LOG_1` property
+
+The bar is positioned statically for a multi-monitor setup (positioned at x=1920).
+
+### Color Scheme Module
+
+`XMonadConfig.GruvboxMaterial` exports color functions that wrap strings in xmobar color escape codes. This ensures consistent theming across both XMonad and XMobar configurations.
+
+## Haskell Configuration
+
+### Custom Prelude
+
+Uses **Relude** instead of standard Prelude, configured in `xmonad-config.cabal`:
+
+```cabal
+mixins:
+  base hiding (Prelude),
+  relude (Relude as Prelude, Relude.Container.One),
+  relude
+```
+
+### Default Extensions
+
+The following extensions are enabled project-wide:
+- DataKinds, DerivingStrategies, DerivingVia
+- LambdaCase, MultiWayIf, NoStarIsType
+- OverloadedStrings, StrictData, TypeFamilies, ViewPatterns
+
+### GHC Options
+
+Strict compilation with extensive warnings:
+- `-Wall`
+- `-Wincomplete-record-updates`, `-Wincomplete-uni-patterns`
+- `-Wmissing-deriving-strategies`, `-Wunused-foralls`
+- `-fprint-explicit-foralls`, `-fprint-explicit-kinds`
+
+## Development Workflow
+
+1. The project uses **haskell-flake** via flake-parts for Haskell package management
+2. HLS (Haskell Language Server) is available but checks are disabled in devShell (`hlsCheck.enable = false`)
+3. Static analysis via **stan** is enabled for the xmonad-config package
+4. The project filters `projectRoot` in `nix/modules/flake/haskell.nix` to avoid unnecessary rebuilds
+
+## Key Dependencies
+
+- **xmonad**, **xmonad-contrib** - Core window manager libraries
+- **xmobar** - Status bar library
+- **relude** - Alternative Prelude
+- **optics-core** - For lens-style accessors
+- **data-default** - Default instances for configuration

src/xmonad.hs

@@ -1,21 +1,17 @@
 import Data.List as L
-import Data.Map qualified as M
 import XMonad
 import XMonad.Actions.CycleWS
 import XMonad.Actions.Navigation2D
-import XMonad.Actions.Submap
+import XMonad.Actions.RotSlaves
 import XMonad.Hooks.DynamicLog
 import XMonad.Hooks.EwmhDesktops
 import XMonad.Hooks.ManageDocks
-import XMonad.Hooks.Modal
 import XMonad.Hooks.StatusBar
-import XMonad.Layout.BinarySpacePartition
 import XMonad.Layout.NoBorders
 import XMonad.Layout.Renamed
 import XMonad.Layout.Spacing
 import XMonad.StackSet qualified as W
 import XMonad.Util.EZConfig
-import XMonad.Util.Font
 import XMonad.Util.Loggers
 
 import Graphics.X11.ExtraTypes.XF86
@@ -34,7 +30,6 @@ main = xmonad
      . ewmhFullscreen
      . ewmh
      . withNavigation2DConfig def
-     . modal [editMode]
      . withSB myXmobar
      $ myConfig
 
@@ -77,24 +72,20 @@ myKeymap =
     -- spawning programs
     [ ("M-a n", spawn myTerminal   )
     , ("M-a e", spawn myLauncher   )
-    , ("M-a f", spawn myFileManager)
+    , ("M-a t", spawn myFileManager)
     , ("M-a s", spawn myScrot      )
 
+    -- toggling layouts
+    , ("M-a d", sendMessage $ JumpToLayout "dynamic tiling")
+    , ("M-a m", sendMessage $ JumpToLayout "maximised"     )
+    , ("M-a f", sendMessage $ JumpToLayout "fullscreen"    )
+
     -- quit window
     , ("M-a q", kill)
 
-    -- toggling layouts
-    , ("M-a <Backspace> t", sendMessage $ JumpToLayout "dynamic tiling"        )
-    , ("M-a <Backspace> b", sendMessage $ JumpToLayout "binary space partition")
-    , ("M-a <Backspace> m", sendMessage $ JumpToLayout "maximised"             )
-    , ("M-a <Backspace> f", sendMessage $ JumpToLayout "fullscreen"            )
-
-    -- enable modal modes
-    , ("M-a m e", setMode "edit")
-
 
     --
-    -- Modifier Keys
+    -- Layout Navigation
     --
 
     -- directional navigation of windows
@@ -103,16 +94,22 @@ myKeymap =
     , ("M-<Down>"   , windowGo   D False)
     , ("M-<Right>"  , windowGo   R False)
 
-    -- swap adjacent windows
-    , ("M-S-<Up>"   , windowSwap U False)
-    , ("M-S-<Left>" , windowSwap L False)
-    , ("M-S-<Down>" , windowSwap D False)
-    , ("M-S-<Right>", windowSwap R False)
-
     -- cycle windows
     , ("M-<Page_Up>"  , windows W.focusUp  )
     , ("M-<Page_Down>", windows W.focusDown)
 
+    -- window rotation
+    , ("M-C-<Page_Up>", rotAllUp)
+    , ("M-C-<Page_Down>", rotAllDown)
+
+    -- cycle workspaces
+    , ("M-<Home>", moveTo Prev hiddenWS)
+    , ("M-<End>" , moveTo Next hiddenWS)
+
+    -- focus screens (directional)
+    , ("M-C-<Home>", screenGo L False)  -- focus left monitor
+    , ("M-C-<End>",  screenGo R False)  -- focus right monitor
+
     -- switch workspaces
     , ("M-1", windows $ W.greedyView "code" )
     , ("M-2", windows $ W.greedyView "chat" )
@@ -120,10 +117,6 @@ myKeymap =
     , ("M-4", windows $ W.greedyView "games")
     , ("M-5", windows $ W.greedyView "misc" )
 
-    -- cycle workspaces
-    , ("M-<Home>", moveTo Prev hiddenWS)
-    , ("M-<End>" , moveTo Next hiddenWS)
-
     -- send window to workspace
     , ("M-S-1", windows $ W.shift "code" )
     , ("M-S-2", windows $ W.shift "chat" )
@@ -131,6 +124,16 @@ myKeymap =
     , ("M-S-4", windows $ W.shift "games")
     , ("M-S-5", windows $ W.shift "misc" )
 
+    -- master pane manipulation
+    , ("M-C-<Left>",  sendMessage Shrink)            -- control layout: shrink master
+    , ("M-C-<Right>", sendMessage Expand)            -- control layout: expand master
+    , ("M-S-<Left>",  sendMessage (IncMasterN (-1))) -- shift windows: fewer in master
+    , ("M-S-<Right>", sendMessage (IncMasterN 1))    -- shift windows: more in master
+
+    -- master window operations
+    , ("M-<Delete>", windows W.focusMaster)
+    , ("M-S-<Delete>", windows W.swapMaster)
+
 
     --
     -- Multimedia
@@ -145,71 +148,14 @@ myKeymap =
     ]
 
 
---
--- Modal keybindings
---
-
-editMode :: Mode
-editMode = mode "edit" $ mkKeysEz
-    --
-    -- Navigation2D / DynamicTiling
-    --
-
-    -- directional navigation of windows
-    [ ("o", windowGo   U False)
-    , ("n", windowGo   L False)
-    , ("e", windowGo   D False)
-    , ("i", windowGo   R False)
-
-    -- swap adjacent windows
-    , ("S-o", windowSwap U False)
-    , ("S-n", windowSwap L False)
-    , ("S-e", windowSwap D False)
-    , ("S-i", windowSwap R False)
-
-    -- shrink/expand the master area
-    , ("f", sendMessage Shrink)
-    , ("u", sendMessage Expand)
-
-    -- number of windows in the master area
-    , ("S-f", sendMessage (IncMasterN 1)   )
-    , ("S-u", sendMessage (IncMasterN (-1)))
-
-    --
-    -- BinarySpacePartition
-    --
-
-    -- expand windows
-    , ("M-o", sendMessage $ ExpandTowardsBy U 0.01)
-    , ("M-n", sendMessage $ ExpandTowardsBy L 0.01)
-    , ("M-e", sendMessage $ ExpandTowardsBy D 0.01)
-    , ("M-i", sendMessage $ ExpandTowardsBy R 0.01)
-
-    -- shrink windows
-    , ("M-M1-o", sendMessage $ ShrinkFromBy U 0.01)
-    , ("M-M1-n", sendMessage $ ShrinkFromBy L 0.01)
-    , ("M-M1-e", sendMessage $ ShrinkFromBy D 0.01)
-    , ("M-M1-i", sendMessage $ ShrinkFromBy R 0.01)
-
-    -- swap/rotate
-    , ("M-r", sendMessage Rotate)
-    , ("M-s", sendMessage Swap  )
-
-    -- split shift
-    , ("M-f", sendMessage $ SplitShift Prev)
-    , ("M-u", sendMessage $ SplitShift Next)
-    ]
-
-
 --
 -- Layouts
 --
 
-myLayouts = myTile ||| myBsp ||| myMax ||| myFull
+myLayouts = myTile ||| myMax ||| myFull
   where
     -- our layouts
     myTile     = renamed [Replace "dynamic tiling"] . avoidStruts . myGaps $ Tall nmaster delta ratio
-    myBsp      = renamed [Replace "binary space partition"] . avoidStruts . myGaps $ emptyBSP
     myMax      = renamed [Replace "maximised"     ] . avoidStruts . myGaps $ Full
     myFull     = renamed [Replace "fullscreen"    ] . noBorders            $ Full
     -- add a configurable amount of space around windows.
@@ -236,11 +182,8 @@ myXmobarPP = def
     , ppHiddenNoWindows = grey0  . wrap " " ""
     , ppUrgent          = red    . wrap " " ""
     , ppLayout          = aqua   . wrap (grey0 " <fn=1>[</fn> ") (grey0 " <fn=1>]</fn> ")
-    , ppOrder           = \case { [ws, l, title, mode] -> [ws, l, mode, title]; xs -> xs }
+    , ppOrder           = \[ws, l, _] -> [ws, l]
-    , ppExtras          = [lMode]
     }
-  where
-    lMode = xmobarColorL "#d8a657" "#282828" . fixedWidthL AlignCenter "-" 4 $ logMode
 
 
 --