Implements a generic join point (advice chain) pattern that allows toollets to hook into task lifecycle events (create, enqueue, begin, end, etc.) without modifying core code. Supports put_front, put_back, put_before, put_after, and put_replace operations. This is a clean, self-contained aspect-oriented mechanism that can be extracted and reused in any C++ project requiring extensible instrumentation.

Provides a lock-free, RAII-safe singleton template with exception-safe initialization. Uses atomic operations and double-checked locking pattern. The implementation is concise, thread-safe, and can be reused in any C++ project needing a robust singleton without external dependencies.

Defines a shared-memory buffer class (blob) with offset/length semantics, enabling zero-copy slicing and sharing of data buffers. It uses reference counting for ownership management and integrates with the transient memory allocator. This is a fundamental data structure for efficient RPC and file I/O, and can be extracted as a standalone utility for buffer management.

Implements a thread-local bump allocator optimized for short-lived RPC message buffers. Provides tls_trans_malloc and tls_trans_free with alignment guarantees (max_align_t). The allocator is simple, fast, and avoids fragmentation. This pattern is reusable in any high-throughput system requiring temporary allocations with minimal overhead.

Provides macros (DEFINE_JSON_SERIALIZATION, JSON_ENCODE_ENTRIES, JSON_DECODE_ENTRIES) for automatic JSON serialization/deserialization of C++ structs. Supports nested types, vectors, maps, and custom forwarders. This is a self-contained code generation approach that can be extracted and adapted for other serialization formats.