Refine shell surfaces, spacing, and Ferese symbol

README.md

@@ -166,10 +166,10 @@ target/debug/ferese --backend nested --grant-effects --grant-shell-control -- \
 
 The Ferese mark enters overview, where workspace indicators become available.
 The focused app appears on the left; status controls and day/time sit on the
-right. The 28px bar has square screen edges, 19px icons, a fine bottom separator,
-and no drop shadow. An 8px gap separates it from windows; adjust
-`top_bar_window_gap` under `[theme.geometry]` to change it. This is additional to
-the workspace outer gap. Its dark startup fallback matches the material palette.
+right. The 28px bar has square screen edges, 19px icons, and no border or drop
+shadow. Window spacing uses the workspace outer gap; `top_bar_window_gap` under
+`[theme.geometry]` adds optional extra space (default 0). Solid and translucent
+shell surfaces also omit outlines. The dark startup fallback matches the material palette.
 
 Keyboard and direct-session touchpad settings are applied at startup:
 

compositor/src/winit.rs

@@ -256,11 +256,9 @@ void main() {
             * shadow_values.y * (1.0 - coverage) * alpha;
         gl_FragColor = vec4(0.0, 0.0, 0.0, opacity);
     } else if (paint_mode > 0.5) {
-        if (edge_bar > 0.5) {
-            float bottom = logical_size.y * pixel_scale
-                - dot(gl_FragCoord.xy - local_origin, local_axes.zw);
-            float opacity = 0.10 * (1.0 - smoothstep(pixel_scale - 0.5, pixel_scale + 0.5, bottom)) * coverage * alpha;
-            gl_FragColor = vec4(vec3(opacity), opacity);
+        // Screen-edge bars and non-glass materials have no outline.
+        if (edge_bar > 0.5 || glass_edges < 0.5) {
+            gl_FragColor = vec4(0.0);
             return;
         }
         float border = smoothstep(-pixel_scale - 0.5, -pixel_scale + 0.5, sdf);

shell/ferese-shell/assets/icons/ferese.svg

@@ -1,4 +1,5 @@
-<svg xmlns="http://www.w3.org/2000/svg" width="24" height="24" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2.4" stroke-linecap="round" stroke-linejoin="round">
-  <path d="M7 20V6a2 2 0 0 1 2-2h10M7 11.5h9"/>
-  <path d="M4 20h3"/>
+<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 200 200" role="img" aria-label="Ferese symbol: tiled F">
+  <rect x="20" y="20" width="50" height="160" rx="8" fill="currentColor"/>
+  <rect x="80" y="20" width="100" height="55" rx="8" fill="currentColor"/>
+  <rect x="80" y="95" width="70" height="45" rx="8" fill="currentColor"/>
 </svg>

shell/ferese-shell/src/config.rs

@@ -72,7 +72,7 @@ impl Default for ShellTheme {
             shadow: [0, 0, 0, 85],
             bar_height: 28.0,
             bar_margin_top: 0,
-            bar_window_gap: 8,
+            bar_window_gap: 0,
             bar_margin_horizontal: 0,
             bar_radius: 0.0,
             material_radius: 14.0,
@@ -415,7 +415,7 @@ const fn default_bar_height() -> f32 {
     28.0
 }
 const fn default_bar_window_gap() -> i32 {
-    8
+    0
 }
 const fn default_bar_margin_top() -> i32 {
     0

shell/ferese-shell/src/status_ui.rs

@@ -599,13 +599,8 @@ impl FereseShell {
                 text_color: Some(primary),
                 icon_color: Some(primary),
                 border: Border {
-                    color: if compositor_material {
-                        Color::TRANSPARENT
-                    } else {
-                        color_with_opacity(theme.border, p * 0.6)
-                    },
-                    width: 1.0,
                     radius: theme.material_radius.into(),
+                    ..Default::default()
                 },
                 // Iced's shadow fills the silhouette behind the quad. With
                 // transparent client content that fill remains visible over