refactor(gameplay): move chunk generation phases into gen_chunk method

Consolidate multiple phase generation calls into a single gen_chunk() method on Chunk, which handles neighbor generation and ensures thread safety. Simplify World::gen_chunks_internal by using gen_chunk() instead of manual phase orchestration.

src/gameplay/chunk.cpp

@@ -455,6 +455,38 @@ void Chunk::gen_cross_plane_vertices(int world_x, int world_y, int world_z,
     }
 }
 
+void Chunk::gen_chunk() {
+    if (m_blocks.size() != 0) {
+        Logger::warn(
+            "Request Generator Chunk {} {} ,but the Blocks size is Not 0",
+            m_chunk_pos.x, m_chunk_pos.z);
+    }
+    std::vector<Chunk> neighbor;
+    for (int i = 0; i < 4; i++) {
+        neighbor.emplace_back(m_world, m_chunk_pos + CHUNK_DIR[i]);
+    }
+    for (auto& chunk : neighbor) {
+        chunk.gen_phase_one();
+        chunk.gen_phase_three();
+        chunk.gen_phase_five();
+        chunk.gen_phase_seven();
+    }
+    gen_phase_one();
+    gen_phase_three();
+    gen_phase_five();
+
+    OptionalBlockVectorArray neightbor_blocks;
+    for (int i = 0; i < 4; i++) {
+        neightbor_blocks[i] = neighbor[i].get_chunk_blocks();
+    }
+    gen_phase_six(neightbor_blocks);
+    gen_phase_seven();
+    for (int i = 0; i < 4; i++) {
+        neightbor_blocks[i] = neighbor[i].get_chunk_blocks();
+    }
+    gen_vertex_data(neightbor_blocks);
+}
+
 // Logger::info("Cross Sum {}", m_cross_vertices_sum.load());
 
 } // namespace Cubed