refactor: clean up keybinding implementations

- Cleans and organizes key binding definitions for plugins and user
keybinds.

- Update documentation for keybindings

README.md

@@ -45,8 +45,8 @@ This config layers on top of the CachyOS base Fish configuration and adds:
 ├── conf.d/               # Auto-sourced configuration fragments
 │   ├── abbr.fish         # All abbreviations
 │   ├── cheat.fish        # cheat.sh completions
+│   ├── key_bindings.fish # Custom key bindings
 │   ├── fzf.fish          # FZF key binding initialization
-│   ├── keybindings.fish  # Custom key bindings
 │   ├── tailscale.fish    # Tailscale CLI completions
 │   ├── theme.fish        # Theme syntax highlighting colors
 │   ├── wakatime.fish     # WakaTime shell hook
@@ -101,17 +101,7 @@ FZF is themed to Catppuccin Mocha with the following colors set via `FZF_DEFAULT
 - Foreground: `#CDD6F4`
 - Highlights: `#F38BA8` (red), `#CBA6F7` (mauve), `#B4BEFE` (lavender)
 
-**Key bindings** (from `fzf.fish`):
-
-| Binding | Action |
-|---|---|
-| `Ctrl+R` | Search command history |
-| `Ctrl+F` | Search directory files |
-| `Ctrl+Alt+F` | Search git-tracked files |
-| `Ctrl+Alt+L` | Search git log |
-| `Ctrl+Alt+S` | Search git status |
-| `Ctrl+V` | Search shell variables |
-| `Ctrl+Alt+P` | Search running processes |
+See [FZF Bindings](#fzf-bindings) under Key Bindings for the default FZF shortcuts.
 
 ---
 
@@ -141,6 +131,21 @@ Full tab completion for the `tailscale` CLI is provided via `conf.d/tailscale.fi
 
 ## Key Bindings
 
+### FZF Bindings
+
+These are the default FZF bindings (from `fzf.fish`):
+
+| Binding | Action |
+|---|---|
+| `Ctrl+R` | Search command history |
+| `Ctrl+Alt+F` | Search git-tracked files |
+| `Ctrl+Alt+L` | Search git log |
+| `Ctrl+Alt+S` | Search git status |
+| `Ctrl+V` | Search shell variables |
+| `Ctrl+Alt+P` | Search running processes |
+
+### User Bindings
+
 Beyond standard shell and FZF bindings, these custom interactive shortcuts are available:
 
 | Binding | Action | Description |