Remove inaccurate "zero-{copy,allocation}" claims

design.md

@@ -23,7 +23,7 @@ WeaselDB is a high-performance write-side database component designed for system
 - **High-performance JSON parsing** with streaming support and SIMD optimization
 - **Multi-threaded networking** using multiple epoll instances with unified I/O thread pool
 - **Configurable epoll instances** to eliminate kernel-level contention
-- **Zero-copy design** throughout the pipeline
+- **Optimized memory management** with arena allocation and efficient copying
 - **Factory pattern safety** ensuring correct object lifecycle management
 
 ---
@@ -152,7 +152,7 @@ A high-performance, multi-stage, lock-free pipeline for inter-thread communicati
 - **Arena-backed string storage** with efficient memory management
 - **Move-only semantics** for optimal performance
 - **Builder pattern** for constructing commit requests
-- **Zero-copy string views** pointing to arena-allocated memory
+- **String views** pointing to arena-allocated memory to avoid unnecessary copying
 
 #### **Configuration & Optimization**
 
@@ -242,7 +242,7 @@ The system implements a RESTful API. See [api.md](api.md) for comprehensive API
 1. **Performance-first** - Every component optimized for high throughput
 2. **Scalable concurrency** - Multiple epoll instances eliminate kernel contention
 3. **Memory efficiency** - Arena allocation eliminates fragmentation
-4. **Zero-copy** - Minimize data copying throughout pipeline
+4. **Efficient copying** - Minimize unnecessary copies while accepting required ones
 5. **Streaming-ready** - Support incremental processing
 6. **Type safety** - Compile-time validation where possible
 7. **Resource management** - RAII and move semantics throughout
@@ -437,7 +437,7 @@ public:
 
 #### Arena-Based String Handling
 ```cpp
-// Preferred: Zero-copy string view with arena allocation
+// Preferred: String view with arena allocation to minimize copying
 std::string_view process_json_key(const char* data, ArenaAllocator& arena);
 
 // Avoid: Unnecessary string copies