Remove tmux-workspaces in favor of tmuxinator-only workflow

- Delete tmux-workspaces.zsh and .tmux-templates directory
- Remove TW_* config settings from dotfiles.conf
- Clean up tmuxinator.zsh (remove import/integration code)
- Update README, INSTALL, and REFERENCE docs
- Fix editor config: .zshrc now uses DEFAULT_EDITOR from dotfiles.conf

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

README.md

@@ -115,33 +115,9 @@ See [INSTALL.md](INSTALL.md) for detailed instructions.
 
 ## Tmux Workspaces
 
-Dual-mode system: simple templates for quick layouts OR tmuxinator for complex projects.
+Tmuxinator-based workspace management for complex projects with per-pane commands, environment variables, and startup scripts.
 
-### Quick Commands
-
-| Command | Alias | Description |
-|---------|-------|-------------|
-| `tw <name> [template]` | - | Create/attach workspace (auto-detects mode) |
-| `tw-list` | `twl` | List active workspaces |
-| `tw-templates` | `twt` | Show available templates |
-| `tw-save <name>` | `tws` | Save current layout as template |
-| `twf` | - | Fuzzy search workspaces |
-| `tw-sync` | - | Toggle synchronized panes |
-
-### Simple Templates (.tmux files)
-
-| Template | Layout Description |
-|----------|-------------------|
-| `dev` | Editor (50%) + terminal (25%) + logs (25%) |
-| `ops` | 4-pane monitoring grid |
-| `ssh-multi` | 4 panes for multi-server management |
-| `debug` | Main workspace (70%) + helper (30%) |
-| `review` | Side-by-side comparison |
-| `full` | Single full-screen pane |
-
-### Tmuxinator Integration
-
-For projects requiring per-pane commands, environment variables, and startup scripts:
+### Commands
 
 | Command | Alias | Description |
 |---------|-------|-------------|
@@ -149,11 +125,10 @@ For projects requiring per-pane commands, environment variables, and startup scr
 | `txi-new <n> [tmpl]` | `txin` | Create project (dev, ops, web, data, minimal) |
 | `txi-edit <name>` | `txie` | Edit project YAML |
 | `txi-list` | `txil` | List projects |
+| `txi-delete <name>` | `txid` | Delete project |
 | `txif` | - | Fuzzy search projects |
 | `txi-templates` | `txit` | Show available templates |
 
-**Smart Detection:** `tw` automatically uses tmuxinator if a project exists, otherwise creates simple workspace.
-
 ---
 
 ## Machine-Specific Configuration
@@ -473,7 +448,6 @@ DF_PLUGIN_DIR="$HOME/.dotfiles/zsh/plugins"
 │   └── functions/          # Feature modules
 │       ├── motd.zsh
 │       ├── command-palette.zsh
-│       ├── tmux-workspaces.zsh
 │       ├── tmuxinator.zsh
 │       ├── project-env.zsh
 │       ├── notifications.zsh
@@ -495,8 +469,7 @@ DF_PLUGIN_DIR="$HOME/.dotfiles/zsh/plugins"
 ├── vim/.vimrc
 ├── tmux/.tmux.conf
 ├── espanso/                # Text expansion
-├── setup/                  # Setup wizards
-└── .tmux-templates/        # Workspace layouts
+└── setup/                  # Setup wizards
 ```
 
 ---