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/.chezmoi.toml.tmpl

@@ -54,18 +54,19 @@ args = [
 	cores = {{ $cpuCores }}
 	threads = {{ $cpuThreads }}
 
-encryption = "age"
 [age]
 	identity = "{{ .chezmoi.homeDir }}/key.txt"
 	recipient = "age1s3ctpj9lafl6qwyvd89sn448us7gdzd53d8yyhsc7zny78c0k4sqerrkze"
 
+encryption = "age"
+
 [doppler]
 	project = "dotfiles"
 	config = "production"
 
 [hooks.init.pre]
-	command = "{{ .chezmoi.sourceDir }}/hooks/.init_pre.ts"
+	command = "bun"
+	args = ["{{ .chezmoi.sourceDir }}/hooks/.init_pre.ts"]
 [hooks.update.pre]
-	command = "{{ .chezmoi.sourceDir }}/hooks/.update_pre.sh"
-[hooks.read-source-state.pre]
-	command = "{{ .chezmoi.sourceDir }}/hooks/.read-source-state_pre.sh"
+	command = "bun"
+	args = ["{{ .chezmoi.sourceDir }}/hooks/.update_pre.ts"]