DeepSeek Harness Plugin: project-ai-docs

`project-ai-docs` is a DeepSeek Harness (DSH) plugin designed to address agent session context limits and cognitive fragmentation. It enables knowledge consolidation by maintaining a project-specific `docs/.ai/` knowledge base. The plugin uses map-first, layered budgets, and closed-loop write-back mechanisms to ensure structured documentation and incremental awareness. Users can install it through the official DSH channel or copy the skills directory to use it in other hosts, following an initialization, task execution, and write-back workflow to make project knowledge persistent and verifiable.