Fix terminal tab title not resetting after pager commands

Programs like git diff, less, and vim use alternate screen mode and can
set the terminal title. Ghostty doesn't support title push/pop (CSI 22/23),
so titles weren't restored on exit.

Ghostty's shell integration has a title feature that should reset the title
at the prompt, but Starship overwrites PS1 entirely, wiping out those
escape sequences.

Solution:
- Add [custom.window_title] module in starship.toml that sets the window
title using `starship module directory` for consistent formatting
- Disable Ghostty's title feature (no-title) since Starship now handles it

Ref: ghostty-org/ghostty#2667

Author: jdevera

home/dot_config/ghostty/config

@@ -22,7 +22,8 @@ cursor-style-blink = false
 
 # Mouse
 mouse-hide-while-typing = true
-copy-on-select = true
+# Use "clipboard" instead of "true" to copy to system clipboard on macOS (changed in 1.1.0)
+copy-on-select = clipboard
 
 # Quick Terminal (dropdown from anywhere)
 # Toggle with Ctrl+` from any app
@@ -31,3 +32,20 @@ quick-terminal-position = bottom
 # Format: height,width (for bottom/top position)
 quick-terminal-size = 25%,70%
 quick-terminal-autohide = true
+
+# Shell Integration Features
+# Ghostty auto-injects shell integration for supported shells (bash, zsh, fish, elvish).
+#
+# Available features:
+#   cursor   - Sets cursor to a blinking bar at the shell prompt
+#   sudo     - Wraps sudo to preserve terminfo, so terminal features work in sudo commands
+#   title    - Updates window/tab title via shell integration
+#   no-title - Disables the title feature
+#
+# Why no-title: Starship (my prompt) overwrites PS1 entirely, which wipes out any
+# title escape sequences Ghostty's shell integration adds. Instead, window titles
+# are handled via a custom Starship module [custom.window_title] in starship.toml.
+# This also works around Ghostty's lack of title push/pop (CSI 22/23) support for
+# programs using alternate screen mode (git diff, less, vim, etc.).
+# See: https://github.com/ghostty-org/ghostty/discussions/2667
+shell-integration-features = cursor,sudo,no-title

home/dot_config/starship.toml

@@ -5,6 +5,13 @@
 # Palettes must be defined _after_ this line
 palette = "catppuccin_macchiato"
 
+[custom.window_title]
+description = "Set window title to current directory (fixes title not resetting after git diff, less, etc.)"
+when = true
+command = 'printf "\\033]2;%s\\007" "$(starship module directory 2>/dev/null | sed "s/\\x1b\\[[0-9;]*m//g" | tr -d "\\n")"'
+format = "$output"
+shell = ["sh"]
+
 [custom.chezmoi]
 disabled = false
 when = 'test -n "$CHEZMOI_EXECUTABLE"'