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.

home/hooks/.init_pre.ts

@@ -1,28 +1,27 @@
-#!/usr/bin/env -S deno run -A
+#!/usr/bin/env bun
+console.log("init_pre.ts");
 
-import { resolve } from "https://deno.land/std/path/mod.ts";
-import { exists } from "jsr:@std/fs";
+import { exists } from "node:fs/promises";
 import { join } from "node:path";
-import { $, os } from "npm:zx@8.3.2";
+import { homedir } from "node:os";
+import { $ } from "bun";
 
-const { exit } = Deno;
-const filePath = join(os.homedir(), "key.txt");
+const filePath = join(homedir(), "key.txt");
 
-
-if (await exists(resolve(filePath))) {
+if (await exists(filePath)) {
   console.log("key.txt already exists");
-  Deno.exit(0);
+  process.exit(0);
 }
 
 // Acquire the secret from Doppler
-const result = await $`doppler secrets get KEY_TXT --plain`;
+const result = await $`doppler secrets get KEY_TXT --plain`.quiet();
 
 // Check if the command was successful
 if (result.exitCode !== 0) {
   console.error("Failed to get secret KEY_TXT");
-  exit(1);
+  process.exit(1);
 }
 
 // Write the secret to a file
-await Deno.writeTextFile(resolve(filePath), result.stdout);
+await Bun.write(filePath, result.stdout);
 console.log("key.txt bootstrapped");