fix: address CI clippy + leaf duplicates + Bedrock leaf persistence

- biome.rs: drop redundant `as u64` cast (c is already u64; -D warnings
  in CI flagged clippy::unnecessary_cast).
- tree.rs: remove duplicate `(0, _, -1)` column from SPRUCE_LEAVES_FILL_*
  and PINE_LEAVES_FILL_* (carried over from the original SPRUCE_LEAVES_FILL
  pattern). The duplicate produced the same leaves twice; trimming to 5
  entries matches the oak/birch shape and removes wasted writes.
- bedrock_block_map.rs: add explicit persistent_bit + update_bit states
  for mangrove_leaves and azalea_leaves (matching the cherry_leaves
  pattern) so Bedrock exports don't decay the new leaves.

cargo clippy --all-targets --all-features -- -D warnings clean.

Author: louis-e

src/bedrock_block_map.rs

@@ -229,6 +229,24 @@ pub fn to_bedrock_block(block: Block) -> BedrockBlock {
             ],
         ),
 
+        // Mangrove leaves with persistence (1.19+)
+        "mangrove_leaves" => BedrockBlock::with_states(
+            "mangrove_leaves",
+            vec![
+                ("persistent_bit", BedrockBlockStateValue::Bool(true)),
+                ("update_bit", BedrockBlockStateValue::Bool(false)),
+            ],
+        ),
+
+        // Azalea leaves with persistence (1.17+)
+        "azalea_leaves" => BedrockBlock::with_states(
+            "azalea_leaves",
+            vec![
+                ("persistent_bit", BedrockBlockStateValue::Bool(true)),
+                ("update_bit", BedrockBlockStateValue::Bool(false)),
+            ],
+        ),
+
         // Stone slab (bottom half by default)
         "stone_slab" => BedrockBlock::with_states(
             "stone_block_slab",

src/biome.rs

@@ -152,7 +152,7 @@ mod tests {
         }
         let longs = pack_biome_indices(&indices, 1);
         assert_eq!(longs.len(), 1);
-        let expected: u64 = (0..64u64).fold(0, |acc, c| acc | (((c % 2) as u64) << c));
+        let expected: u64 = (0..64u64).fold(0, |acc, c| acc | ((c % 2) << c));
         assert_eq!(longs[0] as u64, expected);
     }
 

src/element_processing/tree.rs

@@ -85,29 +85,26 @@ const OAK_LEAVES_FILL_COMPACT: [(Coord, Coord); 5] = [
 ];
 
 // Spruce — three variants. Conifer cone shape with cross pattern.
-const SPRUCE_LEAVES_FILL_STANDARD: [(Coord, Coord); 6] = [
+const SPRUCE_LEAVES_FILL_STANDARD: [(Coord, Coord); 5] = [
     ((-1, 3, 0), (-1, 10, 0)),
     ((0, 3, -1), (0, 10, -1)),
     ((1, 3, 0), (1, 10, 0)),
-    ((0, 3, -1), (0, 10, -1)),
     ((0, 3, 1), (0, 10, 1)),
     ((0, 11, 0), (0, 11, 0)),
 ];
 
-const SPRUCE_LEAVES_FILL_TOWERING: [(Coord, Coord); 6] = [
+const SPRUCE_LEAVES_FILL_TOWERING: [(Coord, Coord); 5] = [
     ((-1, 4, 0), (-1, 13, 0)),
     ((0, 4, -1), (0, 13, -1)),
     ((1, 4, 0), (1, 13, 0)),
-    ((0, 4, -1), (0, 13, -1)),
     ((0, 4, 1), (0, 13, 1)),
     ((0, 14, 0), (0, 14, 0)),
 ];
 
-const SPRUCE_LEAVES_FILL_SQUAT: [(Coord, Coord); 6] = [
+const SPRUCE_LEAVES_FILL_SQUAT: [(Coord, Coord); 5] = [
     ((-1, 2, 0), (-1, 7, 0)),
     ((0, 2, -1), (0, 7, -1)),
     ((1, 2, 0), (1, 7, 0)),
-    ((0, 2, -1), (0, 7, -1)),
     ((0, 2, 1), (0, 7, 1)),
     ((0, 8, 0), (0, 8, 0)),
 ];
@@ -231,20 +228,18 @@ const TALL_OAK_LEAVES_FILL_GIANT: [(Coord, Coord); 5] = [
 ];
 
 // Pine — two variants. Narrow conifer using spruce blocks.
-const PINE_LEAVES_FILL_STANDARD: [(Coord, Coord); 6] = [
+const PINE_LEAVES_FILL_STANDARD: [(Coord, Coord); 5] = [
     ((-1, 5, 0), (-1, 12, 0)),
     ((0, 5, -1), (0, 12, -1)),
     ((1, 5, 0), (1, 12, 0)),
-    ((0, 5, -1), (0, 12, -1)),
     ((0, 5, 1), (0, 12, 1)),
     ((0, 13, 0), (0, 13, 0)),
 ];
 
-const PINE_LEAVES_FILL_TALL: [(Coord, Coord); 6] = [
+const PINE_LEAVES_FILL_TALL: [(Coord, Coord); 5] = [
     ((-1, 6, 0), (-1, 15, 0)),
     ((0, 6, -1), (0, 15, -1)),
     ((1, 6, 0), (1, 15, 0)),
-    ((0, 6, -1), (0, 15, -1)),
     ((0, 6, 1), (0, 15, 1)),
     ((0, 16, 0), (0, 16, 0)),
 ];