fix: audit fixes — peek icon, blur limit, GResource compression, sync markers (v0.6.8)

- Enable peek icon on password entry (consistent with moongreet)
- Raise blur limit from 100 to 200 (consistent with moongreet/moonset)
- Add compressed="true" to GResource CSS/SVG entries
- Add SYNC comments to duplicated blur/background functions

src/lockscreen.rs

@@ -137,7 +137,7 @@ pub fn create_lockscreen_window(
     // Password entry
     let password_entry = gtk::PasswordEntry::builder()
         .placeholder_text(strings.password_placeholder)
-        .show_peek_icon(false)
+        .show_peek_icon(true)
         .hexpand(true)
         .build();
     password_entry.add_css_class("password-entry");
@@ -566,6 +566,10 @@ fn create_background_picture(
 }
 
 /// Maximum texture dimension for blur input. Textures larger than this are
+// SYNC: MAX_BLUR_DIMENSION, render_blurred_texture, and create_background_picture
+// are duplicated in moongreet/src/greeter.rs and moonset/src/panel.rs.
+// Changes here must be mirrored to the other two projects.
+
 /// downscaled before blurring — the blur destroys detail anyway, so there is
 /// no visible quality loss, but GPU work is reduced significantly.
 const MAX_BLUR_DIMENSION: f32 = 1920.0;