Add session_type parameter to handle_login function and include
it in the StartSession IPC request. Get session type from the
session selector for both button click and Enter key handlers.

Update UserSession::start signature to accept session_type and
optional display. Set XDG_SESSION_TYPE based on session type.
For Wayland sessions, set up controlling TTY via setsid/TIOCSCTTY.

Update daemon to pass session_type through SessionStartInfo and
branch on session type for X11 vs Wayland handling. For Wayland,
stop X server before launching compositor and restart afterward.

Returns the session type (x11/wayland) for the currently selected
session, used by the greeter to inform the daemon.

Enumerate sessions from /usr/share/wayland-sessions/ in addition
to X11 sessions. Each session is tagged with its type (x11/wayland)
for the daemon to handle appropriately.

Add session_type field to distinguish X11 and Wayland sessions.
Uses serde default for backward compatibility with existing clients.

Check common wallpaper locations in order before falling
back to the hardcoded default path.

Add power button tooltips that appear on hover. Implement
dynamic cursor changes: text cursor over input fields,
pointer cursor over clickable elements.

Auto-select first user on startup and skip to password field.
Add login button click handling.

Fix power icon vertical line direction. Clear Cairo path
state in avatar rendering to prevent path leaks between
draws.

Implement CursorType enum with Default, Text, and Pointer
variants using X11 cursor font glyphs. Add set_cursor()
method that only updates when cursor type changes.

Clear root window on startup to hide leftover content from
previous sessions (e.g., garbg wallpaper pixmaps).

Chunk put_image into 1MB segments to avoid exceeding X11
maximum request size on large displays.

Implement proper cursor movement with arrow keys, Home, End,
and Delete. Support shift+arrow for text selection with
visual highlight. Handle click-to-place cursor in text fields.

Fix caps lock interaction with shift key for correct case
handling on letter keys.

Add XAUTHORITY, XDG_SESSION_DESKTOP, XDG_CURRENT_DESKTOP,
XDG_DATA_DIRS, and XDG_CONFIG_DIRS to session environment.
Expand PATH to include ~/.local/bin and ~/.cargo/bin.

Remove Wayland session enumeration since gardm runs an X
server and Wayland compositors cannot run on X11.

Switch from pam-client to pam crate for simpler API. Use
PasswordConv for non-interactive authentication and add
debug logging throughout the auth flow.

Simplify PAM config to use pam_unix.so directly instead of
Fedora-specific includes and SELinux modules.

Add systemd-logind integration for power actions (shutdown, reboot,
suspend) via D-Bus. Update system configuration for Fedora compatibility.

Changes:
- Add zbus dependency for D-Bus communication
- Add power.rs module with logind integration
- Update PAM config based on SDDM's Fedora configuration
- Update systemd service for better compatibility
- Add deployment scripts:
  - install.sh: installs binaries, configs, and service
  - test-gardm.sh: safe testing on separate VT/display
  - swap-dm.sh: safely swap from SDDM to gardm with rollback

Add theming system with customizable colors, fonts, and accessibility
options for the greeter UI.

Features:
- theme.rs with Color parsing (hex #RRGGBB, rgba(), rgb())
- Customizable colors: panel, text, accent, input, button
- Font family and size configuration
- High contrast mode with enhanced visibility
- Large text accessibility option (25% larger)
- Reduce motion option (disables fade transitions)
- All widgets updated to use theme values

Add monitor detection module using RandR to detect connected monitors,
their positions, and primary display. UI elements now center on the
primary monitor instead of the full virtual screen.

Changes:
- Add monitors.rs with MonitorConfig and Monitor structs
- Add randr feature to x11rb dependency
- Update LoginForm, UserList, PowerButtons to accept center coordinates
- Add root() accessor to GreeterWindow for RandR queries
- Add sprint documentation for sprints 5-8

- Avatar loading from ~/.face, AccountsService, and other standard paths
- Circular avatar rendering with RGBA to BGRA conversion
- Fallback to colored initials when no avatar found
- Horizontal user list above login form with hover effects
- Click user to populate username and focus password field
- Selection highlight with blue ring

- Custom Cairo-drawn icons (power, reboot, suspend, chevron, checkmark)
- Power buttons with color-coded hover highlights
- Session selector dropdown with list from daemon
- Mouse tracking for hover states
- IPC integration for power actions

- Read garbg config and playlist state for wallpaper resolution
- Greeter config with visual settings (blur, brightness, corner radius)
- Fade-out transition on successful login
- Relaxed socket permissions for development (0666)

- X11 window with fullscreen override redirect
- Cairo rendering surface for drawing
- Background loader with blur and brightness adjustment
- Login form widget with username/password fields
- Keyboard input handling with X11 keycodes
- IPC integration with gardmd for authentication