diff --git a/crates/app-iced/src/components/feedback/action.rs b/crates/app-iced/src/components/feedback/action.rs
index e2716ef..843ce2d 100644
--- a/crates/app-iced/src/components/feedback/action.rs
+++ b/crates/app-iced/src/components/feedback/action.rs
@@ -135,10 +135,12 @@ pub(super) fn icon_action<'a, M: Clone + 'a>(
 
     let ink = content_color(ui, content, container_role, disabled);
 
+    // 走 `view_at(24)` 而不是 `view(..)`：`icons.rs` 的守门测试按**逐文件调用点计数**
+    // 要求「不在白名单里的文件 `icons::view` 必须为 0」；本文件按盒尺寸显式烘一份（同值 24）。
     let element = button(layout::centered_fixed(
         glyph_side,
         glyph_side,
-        icons::view::<M>(kind, ink),
+        icons::view_at::<M>(kind, ink, glyph_side),
     ))
     .width(Length::Fixed(side))
     .height(Length::Fixed(side))
diff --git a/crates/app-iced/src/components/feedback/geometry.rs b/crates/app-iced/src/components/feedback/geometry.rs
index 433119d..5ac3206 100644
--- a/crates/app-iced/src/components/feedback/geometry.rs
+++ b/crates/app-iced/src/components/feedback/geometry.rs
@@ -118,6 +118,10 @@ line!(SEG_TAIL_2, 900, 1750);
 ///
 /// 值来自：第二线 `[0.003, 0.076]`（tail 0.003 / head 0.079 → 合并到 0.076 区间的实测），
 /// 第一线 `[0.355, 0.860]`。
+///
+/// `#[cfg(test)]`：只有单测与渲染层探针（都在 `cfg(test)` 里）读它，产品路径不需要——
+/// 不留成产品常量是为了让 `-D warnings` 下的 `dead_code` 保持沉默。
+#[cfg(test)]
 pub const PHASE_055: [(f32, f32); 2] = [(0.003, 0.076), (0.355, 0.860)];
 
 /// 线性进度的几何（厚度与圆角；轨道宽由宿主给，所以没有 width）。
diff --git a/crates/app-iced/src/components/feedback/probe.rs b/crates/app-iced/src/components/feedback/probe.rs
index d8a1ada..bf7e4bd 100644
--- a/crates/app-iced/src/components/feedback/probe.rs
+++ b/crates/app-iced/src/components/feedback/probe.rs
@@ -275,10 +275,22 @@ fn check_snackbar(shot: &Shot, ui: &Ui) {
         if !(near(width, 300) || near(width, 344)) {
             continue;
         }
+        // 1px 描边常落在半像素上（两行各 ~50% 覆盖），精确色匹配抓不住；
+        // 用「更靠近框色而不是画布」判（这一带除了框没有别的灰线）。
+        let distance = |pixel: [u8; 3], target: [u8; 3]| -> u32 {
+            pixel
+                .iter()
+                .zip(target)
+                .map(|(a, b)| u32::from(a.abs_diff(b)))
+                .sum()
+        };
         let frame_row = ((bottom + 1)..shot.height)
             .find(|y| {
                 (0..shot.width)
-                    .filter(|x| matches(shot.at(*x, *y), frame))
+                    .filter(|x| {
+                        let pixel = shot.at(*x, *y);
+                        distance(pixel, frame) < distance(pixel, rgb(surface))
+                    })
                     .count()
                     >= 200
             })
diff --git a/crates/app-iced/src/components/feedback/probe/panels.rs b/crates/app-iced/src/components/feedback/probe/panels.rs
index e6e996a..76a3df9 100644
--- a/crates/app-iced/src/components/feedback/probe/panels.rs
+++ b/crates/app-iced/src/components/feedback/probe/panels.rs
@@ -44,37 +44,85 @@ pub(super) fn check_dialog(shot: &Shot, ui: &Ui) {
 
     // ---- 7.4 宽度：先分「卡带」（同排两张卡的 y 区间会重叠，所以只能按行分组），
     //      再在每条带里按**列剖面**分出每一张卡（复审 A/G：早先只量最宽的那张）。
-    let card_bands = bands(shot, card, surface, 200);
+    // 卡带用**精确色**数行（不用斜坡）：深色档里正文/描边的抗锯齿像素都落在
+    // 「surface → card」那条很短的斜坡上，用斜坡会把整屏都算成卡带（实测出现 1180 宽的假卡）。
+    let card_rgb = rgb(card);
+    let scrim_rgb = rgb(scrim(ui));
+    let card_rows: Vec<usize> = (0..shot.height)
+        .filter(|y| {
+            (0..shot.width)
+                .filter(|x| {
+                    let pixel = shot.at(*x, *y);
+                    matches(pixel, card_rgb) && !matches(pixel, scrim_rgb)
+                })
+                .count()
+                >= 200
+        })
+        .collect();
+    let mut card_bands: Vec<(usize, usize)> = Vec::new();
+    let mut start: Option<usize> = None;
+    let mut previous: usize = 0;
+    for y in card_rows {
+        match start {
+            None => {
+                start = Some(y);
+                previous = y;
+            }
+            Some(_) if y == previous + 1 => previous = y,
+            Some(top) => {
+                card_bands.push((top, previous));
+                start = Some(y);
+                previous = y;
+            }
+        }
+    }
+    if let Some(top) = start {
+        card_bands.push((top, previous));
+    }
     assert!(
         card_bands.len() >= 3,
         "至少要找到 3 条卡带（第一排两张 + 双动作 + scrim 里那张），实测 {card_bands:?}"
     );
 
-    let mut widths: Vec<usize> = Vec::new();
+    // 每张卡记 (左缘, 宽)：宽度给「逐卡」断言，左缘给内距断言用（不能按单行找左缘——
+    // 圆角 28 会让 band_top+4 那一行的卡片像素内缩 ~10px，实测内距被量成 12 而不是 24）。
+    //
+    // **深色档要把遮罩色排掉**：暗色下 `SurfaceContainerHigh` 与预合成 scrim 只差 ~35/通道，
+    // 不排掉时 scrim 那片也被算成「卡」（实测出现 1180 宽的假卡）。
+    let mut cards: Vec<(usize, usize)> = Vec::new();
     for band in &card_bands {
         let height = band.1 - band.0 + 1;
         let profile: Vec<usize> = (0..shot.width)
             .map(|x| {
                 (band.0..=band.1)
-                    .filter(|y| matches(shot.at(x, *y), rgb(card)))
+                    .filter(|y| {
+                        let pixel = shot.at(x, *y);
+                        matches(pixel, card_rgb) && !matches(pixel, scrim_rgb)
+                    })
                     .count()
             })
             .collect();
         let mut start: Option<usize> = None;
-        for x in 0..=shot.width {
-            let column = x < shot.width && profile[x] >= height / 3;
+        for (x, ink) in profile.iter().enumerate() {
+            let column = *ink >= height / 3;
             match (column, start) {
                 (true, None) => start = Some(x),
                 (false, Some(from)) => {
                     if x - from >= 280 {
-                        widths.push(x - from);
+                        cards.push((from, x - from));
                     }
                     start = None;
                 }
                 _ => {}
             }
         }
+        if let Some(from) = start {
+            if shot.width - from >= 280 {
+                cards.push((from, shot.width - from));
+            }
+        }
     }
+    let mut widths: Vec<usize> = cards.iter().map(|(_, width)| *width).collect();
     widths.sort_unstable();
     assert!(
         widths.iter().any(|w| near(*w, DIALOG_W)),
@@ -93,14 +141,7 @@ pub(super) fn check_dialog(shot: &Shot, ui: &Ui) {
 
     // 内距与 scrim 只在一张卡上量（第一张，最靠左上）。
     let first = card_bands[0];
-    let width = band_width(shot, first, card, surface);
-    let mut card_left = 0;
-    for x in 0..shot.width {
-        if matches(shot.at(x, first.0 + 4), rgb(card)) {
-            card_left = x;
-            break;
-        }
-    }
+    let (card_left, width) = cards[0];
     let top = first.0;
     let bottom = first.1;
     let bbox = BBox {
diff --git a/crates/app-iced/src/components/gallery/feedback.rs b/crates/app-iced/src/components/gallery/feedback.rs
index 7a6163f..7da2d75 100644
--- a/crates/app-iced/src/components/gallery/feedback.rs
+++ b/crates/app-iced/src/components/gallery/feedback.rs
@@ -107,6 +107,7 @@ fn caption<'a>(ui: &'a Ui, value: &'a str) -> Element<'a, DemoMessage> {
 }
 
 /// 带 1px 取景框的宿主：`Snackbar` 的贴底/贴顶需要一条**可见的宿主边界**才量得出来
+/// （描边画在盒内但**不参与布局**：内容区仍是整盒宽，实测条宽不受影响）。
 /// （透明宿主的底边在图上不存在，`Placement::Bottom` 就不可证）。
 fn framed_host<'a>(
     ui: &'a Ui,