dsh-memory-loader: A Deterministic Memory Injection Plugin for DeepSeek Harness

`dsh-memory-loader` is a deterministic memory injection plugin for DeepSeek Harness that automatically loads global and project-level memory (`MEMORY.md` and the day's notes) at session start. It provides independent byte-budget control (16KB total budget, 64KB per-file limit), safe content escaping, and deduplication, ensuring stable and controllable memory. Once enabled through the recommended installation method, no manual loading logic is required; memory content is automatically injected as a Durable User Message, making it suitable for scenarios that require long-term contextual coherence.