Add CLAUDE.md and update Doom Emacs config

- Add CLAUDE.md for Claude Code guidance
- Update gptel config to use Claude Sonnet 4 with key from ~/.secrets/claude_key
- Update elfeed filters to exclude -wait tag
- Enable terraform module in init.el
- Update org agenda files for 2026
- Fix org-hugo link rendering for vanilla Markdown

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

CLAUDE.md

@@ -0,0 +1,53 @@
+# CLAUDE.md
+
+This file provides guidance to Claude Code (claude.ai/code) when working with code in this repository.
+
+## Repository Purpose
+
+Personal dotfiles repository for Shawn Borton's development environment. Configs for Doom Emacs, Vim, Bash, and tmux — primarily targeting Linux (Arch Linux systems: archie, peregrine) with some historical macOS artifacts.
+
+## File Overview
+
+| File | Purpose |
+|------|---------|
+| `config.el` | Primary Doom Emacs private config (keybindings, UI, packages config) |
+| `init.el` | Doom Emacs module selection |
+| `packages.el` | Additional Doom Emacs package declarations |
+| `.vimrc` | Vim config with vim-plug plugin manager |
+| `.bash_profile` | Shell aliases, prompt, NVM setup |
+| `.tmux.conf` | tmux keybindings and status bar |
+
+## Doom Emacs Workflow
+
+After editing `config.el`, `init.el`, or `packages.el`:
+
+```bash
+doom sync      # Sync packages and modules (required after packages.el changes)
+doom reload    # Reload config without restarting (for config.el/init.el changes)
+```
+
+## Key Conventions
+
+**Doom Emacs:**
+- Uses Evil mode with `jk` as the escape sequence
+- Leader key bindings are defined in `config.el` under `map!` blocks
+- Custom packages are declared in `packages.el` using `package!` with optional `:recipe` for git sources
+- Modules are toggled in `init.el` with flags like `(python +lsp +pyright +tree-sitter)`
+- Fonts: JetBrains Mono (14pt) for fixed-pitch, Overpass Nerd Font (18pt) for variable-pitch
+- Theme: `doom-oceanic-next`
+
+**Vim:**
+- Plugin manager: vim-plug (auto-installs to `~/.vim/autoload/plug.vim` on first run)
+- Run `:PlugInstall` after adding new plugins to `.vimrc`
+
+**tmux:**
+- Prefix is `C-a` (not the default `C-b`)
+- Reload config with `C-a r`
+
+## Notable Integrations in config.el
+
+- **Elfeed** (RSS): Connects to a self-hosted Fever API at `rss.onionpatch.cloud`; feeds are tagged and filtered with custom keybindings under the leader key
+- **Pocket**: Integrated with elfeed for article saving via `pocket-reader`
+- **gptel / chatgpt-shell**: LLM/ChatGPT integration packages declared in `packages.el`
+- **org-roam**: Unpinned in `packages.el` for a custom version; roam2 module enabled in `init.el`
+- **Dired**: Custom `h`/`l` navigation keys; Thunar integration for GUI file manager