feat: major dotfiles refactor with documentation and multi-platform improvements

- Add comprehensive CLAUDE.md with chezmoi best practices and AI assistant guidelines
- Restructure TODO.md with prioritized tasks and detailed organization
- Add PowerShell profile template for Windows platform support
- Split git configs into identity-specific templates (ryan/xevion)
- Convert nushell env.nu and gitconfig to templates for cross-platform rendering
- Refactor chezmoi hooks to TypeScript (.init_pre.ts, .update_pre.ts)
- Update .chezmoiignore with better platform-specific file handling
- Remove deprecated shellchecker.sh and tasks.json from VS Code config
- Add mise integration to shell configs (bash, zsh, nushell, PowerShell)
- Clean up commonrc.sh.tmpl WSL-specific code
- Disable Deno in VS Code settings, enable simple dialog mode
- Add nushell extension recommendation to VS Code

This commit establishes better cross-platform support (Windows/WSL/Linux),
improves documentation for future maintenance, and standardizes configuration
management patterns across the repository.

.vscode/extensions.json

@@ -0,0 +1,5 @@
+{
+    "recommendations": [
+        "thenuprojectcontributors.vscode-nushell-lang"
+    ]
+}

.vscode/settings.json

@@ -19,5 +19,6 @@
   "editor.formatOnPaste": false,
   "editor.formatOnType": false,
   "notebook.formatOnSave.enabled": false,
-  "deno.enable": true
+  "deno.enable": false,
+  "files.simpleDialog.enable": true
 }

.vscode/shellchecker.sh

@@ -1,51 +0,0 @@
-#!/bin/bash
-# set -u
-
-ROOT="$1"
-SHELLCHECK_OPTIONS="--color=never --format=gcc"
-
-# Function to invoke shellcheck or chezmoi execute-template based on file type
-invoke_checker() {
-    filepath="$1"
-
-    # If the file is a .tmpl file, use chezmoi execute-template
-    if [[ $filepath == *.tmpl ]]; then
-        # TODO: This still doesn't work, for some reason 'sed' just refuses to replace the 'stdin' placeholder with execute-template
-        if ! RENDERED_TEMPLATE=$(cat $filepath | chezmoi execute-template | sed -E "s|stdin|$filepath|"); then
-            # since stdin is used for this, the filepath appears as '-', and thus must be replaced
-            echo "$RENDERED_TEMPLATE" | shellcheck - $SHELLCHECK_OPTIONS | sed "s|^-|$filepath|"
-        else
-            echo $filepath
-        fi
-    else
-        # Otherwise, use shellcheck directly
-        shellcheck "$filepath" $SHELLCHECK_OPTIONS
-    fi
-}
-
-# chek that 'shellcheck' is available
-if ! command -v shellcheck &> /dev/null; then
-    echo "shellcheck could not be found"
-    exit 1
-fi
-
-echo "initial shellcheck started"
-
-# Run an initial scan of all shell scripts
-while IFS= read -rd $'\0' file; do
-    invoke_checker "$file"
-done < <(find "$ROOT" \( -name "*.sh" -o -name "*.sh.tmpl" \) -type f -print0)
-
-echo "inotifywait started"
-inotifywait -mr --quiet --format ' %w %f' -e modify $1 |
-    while read -r dir file; do
-        absolute_path=${dir}${file}
-
-        # Check if the changed file ends with .sh or .sh.tmpl
-        if [[ $absolute_path == *.sh || $absolute_path == *.sh.tmpl ]]; then
-            invoke_checker $absolute_path
-        fi
-
-    done
-
-echo "inotify watcher stopped"

.vscode/tasks.json

@@ -1,58 +0,0 @@
-{
-    // See https://go.microsoft.com/fwlink/?LinkId=733558
-    // for the documentation about the tasks.json format
-    "version": "2.0.0",
-    "tasks": [
-        {
-            "label": "Shellcheck",
-            "type": "shell",
-            "isBackground": true,
-            "command": "${workspaceFolder}/.vscode/shellchecker.sh ${workspaceFolder}",
-            "problemMatcher": [
-
-                {
-                    "source": "shellcheck",
-                    "owner": "bash",
-                    "fileLocation": ["autoDetect", "${workspaceFolder}"],
-                    "pattern": {
-                        // info/style joined into 'note'
-                        "regexp": "^(.*):(\\d+):(\\d+):\\s*(error|warning|note):\\s*(.*)$",
-                        "file": 1,
-                        "line": 2,
-                        "column": 3,
-                        "severity": 4,
-                        "message": 5
-                    },
-                    "background": {
-                        "activeOnStart": true,
-                        "beginsPattern": "^inotify watcher started$",
-                        "endsPattern": "^inotify watcher stopped$"
-                    }
-                },
-                {
-                    "source": "chezmoi",
-                    "owner": "chezmoi",
-                    "fileLocation": ["autoDetect", "${workspaceFolder}"],
-                    "pattern": {
-                        "regexp": "^chezmoi: template: (.*):(\\d+):(\\d+): executing \".+\" (at .*)$",
-                        "file": 1,
-                        "line": 2,
-                        "column": 3,
-                        "message": 4
-                    }
-                }
-            ],
-            "runOptions": {
-                "runOn": "folderOpen"
-            },
-            "presentation": {
-                "echo": true,
-                "reveal": "always",
-                "revealProblems": "never",
-                "focus": false,
-                "panel": "dedicated",
-                "clear": false
-            },
-        }
-    ]
-}