Resolve clippy warnings in this round's changes

Three nits clippy flagged on the round 13 + 14 commits. Fix each:
* `RangeInclusive::contains` for the sidebar reveal-threshold guard.
* Reword the popover-anchor doc-comments so the `+ tile` lines don't
  get parsed as Markdown list items.
* Collapse the `if let Some(text)` + nested `if` in the external web
  keyboard handler into a single `let-and-and` chain.

No behavior change. cargo clippy -p ely_app: clean.
cargo test --workspace: 440 passed, 0 failed.

crates/ely_app/src/shell/chrome/sidebar_header.rs

@@ -231,13 +231,13 @@ pub(crate) fn render_workspace_disclosure_backdrop(
 }
 
 /// Anchor of the disclosure popover relative to the window's top-left.
-/// Walks the sidebar layout: SHELL_INSET (16) + sidebar header pt (8)
-/// + title row h (20) + header gap (8) + picker row py-top (4) + tile
-/// height (32) + picker row py-bot (4) + popover lift (6) = 98.
+/// Walks the sidebar layout — SHELL_INSET 16 plus sidebar header pt 8
+/// plus title row h 20 plus header gap 8 plus picker row py-top 4 plus
+/// tile height 32 plus picker row py-bot 4 plus popover lift 6 = 98.
 const DISCLOSURE_TOP_PX: f32 = 98.0;
 
-/// Left edge of the disclosure: SHELL_INSET (16) + header px-left (10)
-/// + picker row px-left (2) + tile width (32) + picker gap (6) = 66.
+/// Left edge of the disclosure — SHELL_INSET 16 plus header px-left 10
+/// plus picker row px-left 2 plus tile width 32 plus picker gap 6 = 66.
 /// That lines the disclosure up with the picker pill, not the tile.
 const DISCLOSURE_LEFT_PX: f32 = 66.0;
 

crates/ely_app/src/shell/render.rs

@@ -236,7 +236,7 @@ impl ElyShell {
             return;
         }
 
-        if cursor_x >= REVEAL_THRESHOLD_PX && cursor_x <= COLLAPSE_THRESHOLD_PX {
+        if (REVEAL_THRESHOLD_PX..=COLLAPSE_THRESHOLD_PX).contains(&cursor_x) {
             return;
         }
 

crates/ely_app/src/shell/web_surface_keyboard.rs

@@ -21,10 +21,10 @@ impl ElyShell {
             return;
         }
 
-        if let Some(text) = special_key_text(event) {
-            if self.type_text_in_external_web_viewport(tab_id, requested_url, text, cx) {
-                cx.stop_propagation();
-            }
+        if let Some(text) = special_key_text(event)
+            && self.type_text_in_external_web_viewport(tab_id, requested_url, text, cx)
+        {
+            cx.stop_propagation();
         }
     }