UI: turn the editor into a sequential optical layout table

.envrc

@@ -0,0 +1,11 @@
+#!/usr/bin/env bash
+
+export DIRENV_WARN_TIMEOUT=20s
+
+eval "$(devenv direnvrc)"
+
+use devenv
+
+if [[ -d .devenv/state/venv/bin ]]; then
+  PATH_add .devenv/state/venv/bin
+fi

.gitignore

@@ -196,3 +196,5 @@ fabric.properties
 env-*/
 venv/
 raytracing/_version.py
+.devenv/
+.direnv/

devenv.lock

@@ -0,0 +1,65 @@
+{
+  "nodes": {
+    "devenv": {
+      "locked": {
+        "dir": "src/modules",
+        "lastModified": 1774957469,
+        "narHash": "sha256-YkzJi44ntRLRNTmkQoABnQU0oxQjKaOHRm0bp0uxUuI=",
+        "owner": "cachix",
+        "repo": "devenv",
+        "rev": "7ea7c651664ea1526387a68d66a9f4e7f17dc146",
+        "type": "github"
+      },
+      "original": {
+        "dir": "src/modules",
+        "owner": "cachix",
+        "repo": "devenv",
+        "type": "github"
+      }
+    },
+    "nixpkgs": {
+      "inputs": {
+        "nixpkgs-src": "nixpkgs-src"
+      },
+      "locked": {
+        "lastModified": 1774287239,
+        "narHash": "sha256-W3krsWcDwYuA3gPWsFA24YAXxOFUL6iIlT6IknAoNSE=",
+        "owner": "cachix",
+        "repo": "devenv-nixpkgs",
+        "rev": "fa7125ea7f1ae5430010a6e071f68375a39bd24c",
+        "type": "github"
+      },
+      "original": {
+        "owner": "cachix",
+        "ref": "rolling",
+        "repo": "devenv-nixpkgs",
+        "type": "github"
+      }
+    },
+    "nixpkgs-src": {
+      "flake": false,
+      "locked": {
+        "lastModified": 1773840656,
+        "narHash": "sha256-9tpvMGFteZnd3gRQZFlRCohVpqooygFuy9yjuyRL2C0=",
+        "owner": "NixOS",
+        "repo": "nixpkgs",
+        "rev": "9cf7092bdd603554bd8b63c216e8943cf9b12512",
+        "type": "github"
+      },
+      "original": {
+        "owner": "NixOS",
+        "ref": "nixpkgs-unstable",
+        "repo": "nixpkgs",
+        "type": "github"
+      }
+    },
+    "root": {
+      "inputs": {
+        "devenv": "devenv",
+        "nixpkgs": "nixpkgs"
+      }
+    }
+  },
+  "root": "root",
+  "version": 7
+}

devenv.nix

@@ -0,0 +1,57 @@
+{ pkgs, lib, ... }:
+
+let
+  python = pkgs.python312;
+  pythonPackages = python.pkgs;
+in
+{
+  packages = [
+    python
+    pythonPackages.tkinter
+    pkgs.tk
+    pkgs.tcl
+    pkgs.stdenv.cc.cc.lib
+    pkgs.zlib
+    pkgs.libGL
+    pkgs.xorg.libX11
+    pkgs.xorg.libXext
+    pkgs.xorg.libXrender
+    pkgs.xorg.libSM
+    pkgs.xorg.libICE
+  ];
+
+  env = {
+    VENV_DIR = ".devenv/state/venv";
+    PIP_DISABLE_PIP_VERSION_CHECK = "1";
+    PYTHONNOUSERSITE = "1";
+    TCL_LIBRARY = "${pkgs.tcl}/lib/tcl${pkgs.tcl.version}";
+    TK_LIBRARY = "${pkgs.tk}/lib/tk${pkgs.tk.version}";
+    LD_LIBRARY_PATH = lib.makeLibraryPath [
+      pkgs.stdenv.cc.cc.lib
+      pkgs.zlib
+      pkgs.libGL
+      pkgs.xorg.libX11
+      pkgs.xorg.libXext
+      pkgs.xorg.libXrender
+      pkgs.xorg.libSM
+      pkgs.xorg.libICE
+    ];
+  };
+
+  enterShell = ''
+    echo "RayTracing devenv"
+    echo "Python $(${python}/bin/python --version | cut -d' ' -f2)"
+
+    if [ ! -x "$VENV_DIR/bin/python" ]; then
+      ${python}/bin/python -m venv --system-site-packages "$VENV_DIR"
+    fi
+
+    . "$VENV_DIR/bin/activate"
+
+    python -m ensurepip --upgrade >/dev/null 2>&1 || true
+    python -m pip install --upgrade pip setuptools wheel build >/dev/null
+    python -m pip install --upgrade -e ".[gui]" pillow basedpyright ruff >/dev/null
+
+    export PATH="$PWD/$VENV_DIR/bin:$PATH"
+  '';
+}