Add session manager for tmux.

This will open a tmux session for each monitor.
Add helper script for tmux actions.

alacritty/alacritty.toml

@@ -8,7 +8,7 @@ dimensions = { columns = 140, lines = 45 }
 option_as_alt = "Both"
 
 [font]
-size = 16.0
+size = 12.0
 
 [font.normal]
 family = "0xProto Nerd Font"
@@ -115,9 +115,11 @@ bindings = [
 [terminal]
 osc52 = "CopyPaste"  # Enable OSC 52 for clipboard support
 
+# Shell configuration - tmux sessions are now handled by smart-terminal.sh
+# which creates monitor/workspace-specific sessions automatically
 [terminal.shell]
-program = "/usr/bin/tmux"
-args = ["new-session", "-A", "-s", "main"]
+program = "/bin/bash"
+args = ["-l"]
 
 [scrolling]
 history = 10000