Say when a structure layer needs more zoom, release 0.5.2

Cargo.toml

@@ -6,7 +6,7 @@ members = ["crates/*"]
 repository = "https://github.com/byRandom/Chunkscope"
 edition = "2024"
 license = "MIT OR Apache-2.0"
-version = "0.5.1"
+version = "0.5.2"
 
 # The parity tests replay millions of noise and biome evaluations; unoptimized
 # they take minutes. Optimize test builds (debug assertions stay on).

crates/chunkscope-app/src/app.rs

@@ -382,18 +382,26 @@ impl ChunkscopeApp {
                     if kind.dimension != self.dimension {
                         continue;
                     }
+                    // A layer too dense for this zoom is not drawn: say so, and
+                    // from which zoom it shows.
+                    let min_zoom = structures::spacing_blocks(i).map(|s| MARKER_SPACING_PX / s);
                     let note = if kind.set == SPAWN {
-                        Some("estimate")
+                        Some("estimate".to_owned())
+                    } else if let Some(z) = min_zoom
+                        && self.kinds_on[i]
+                        && (self.zoom as f64) < z
+                    {
+                        Some(format!("zoom in ({:.0}%+)", (z * 100.0).ceil()))
                     } else {
-                        (!structures::validated(i)).then_some("possible")
+                        (!structures::validated(i)).then(|| "possible".to_owned())
                     };
                     layer_row(
                         ui,
                         &mut self.kinds_on[i],
                         Icon::Pin,
                         Some((kind.glyph, kind.color)),
                         kind.label,
-                        note,
+                        note.as_deref(),
                     );
                 }
                 ui.add_space(6.0);

docs/releases/v0.5.2.md

@@ -0,0 +1,27 @@
+A clearer map for dense layers.
+
+## What's fixed
+
+- **Layers that are too dense for the current zoom now say so.** Some
+  structures are attempted very close together (Nether fossils every 2
+  chunks, mineshafts in every chunk), so the map only draws them when
+  zoomed in far enough. Until now such a layer stayed blank without any
+  explanation; its row now reads "zoom in (150%+)", with the zoom it needs.
+- Nether fossils only generate in soul sand valleys, so that is where they
+  show up once zoomed in.
+
+Matches Minecraft: Java Edition 26.3.
+
+## Downloads
+
+| Platform | File |
+| --- | --- |
+| Windows (x86_64) | `chunkscope-v0.5.2-windows-x86_64.zip` |
+| macOS (Apple silicon) | `chunkscope-v0.5.2-macos-aarch64.tar.gz` |
+| macOS (Intel) | `chunkscope-v0.5.2-macos-x86_64.tar.gz` |
+| Linux (x86_64) | `chunkscope-v0.5.2-linux-x86_64.tar.gz` |
+
+`SHA256SUMS.txt` lists the checksums. The binaries are not signed yet: on
+Windows, SmartScreen may ask for confirmation ("More info", then "Run
+anyway"); on macOS, run `xattr -d com.apple.quarantine chunkscope` first.
+On Linux the app needs the usual X11 or Wayland libraries.