Improve socket handling for -x spawned fenrir instances.

docs/user.md

@@ -132,6 +132,18 @@ enable_command_remote=True       # allow command execution
 
 ### Basic Usage with socat
 
+#### Instance Discovery
+```bash
+# List registered Fenrir instances and their socket paths
+echo "ls" | socat - UNIX-CLIENT:/tmp/fenrirscreenreader-deamon.sock
+```
+
+In X terminal mode (`fenrir -x`), multiple Fenrir instances can run at the same
+time. Each instance has a private socket at `/tmp/fenrirscreenreader-<pid>.sock`,
+and one instance may also own the standard control socket. Use `ls` or
+`command ls` on the standard socket to find the private socket for a specific
+instance.
+
 #### Speech Control
 ```bash
 # Interrupt current speech
@@ -193,6 +205,7 @@ echo "command quitapplication" | socat - UNIX-CLIENT:/tmp/fenrirscreenreader-dea
 - `command say <text>` - Speak text
 - `command interrupt` - Stop speech
 - `command tempdisablespeech` - Disable until next key
+- `ls` / `list` / `command ls` / `command list` - List registered Fenrir instances
 
 **Settings Commands:**
 - `setting set <section>#<key>=<value>` - Change setting
@@ -318,7 +331,7 @@ Fenrir automatically detects and provides audio feedback for progress indicators
 
 ### Input Drivers
 - **evdevDriver** - Linux evdev (recommended for Linux)
-- **ptyDriver** - Terminal emulation (cross-platform)
+- **x11Driver** - X11 terminal-scoped input for `fenrir -x`
 
 ### Screen Drivers
 - **vcsaDriver** - Linux VCSA devices (TTY)
@@ -341,8 +354,6 @@ fenrir [OPTIONS]
 - `-o, --options SECTION#SETTING=VALUE;..` - Override settings
 - `-d, --debug` - Enable debug mode
 - `-p, --print` - Print debug to screen
-- `-e, --emulated-pty` - PTY emulation for desktop use
-- `-E, --emulated-evdev` - PTY + evdev emulation
 - `-x, --x11` - PTY + X11 keyboard input scoped to the terminal window
 - `--x11-window-id WINDOWID` - X11 window id to use for `--x11` terminal mode
 - `-F, --force-all-screens` - Ignore ignoreScreen setting
@@ -368,6 +379,8 @@ X11 terminal mode uses the same keyboard layout files as TTY Fenrir. Supported F
 
 This mode requires `python-xlib`.
 
+For a dedicated PTY/terminal screen reader, see TDSR: https://github.com/tspivey/tdsr
+
 ## Troubleshooting
 
 ### No Speech