dsh-decision-log: Adding Decision Memory to AI Workflows

`dsh-decision-log` is a DeepSeek Harness plugin designed to address issues where the AI loses context or reverses previous decisions. It records project decisions in a local `.dsh/DECISIONS.md` file and ensures that summaries are automatically injected into new sessions, preventing repeated discussions or arbitrary changes to technology choices. The plugin can be invoked through natural language or command line, and decision statuses include accepted, pending confirmation, and overturned. Data is stored locally and never sent to the cloud, and it runs in incognito mode by default. Decisions automatically generated by the AI default to “pending confirmation” and require manual user confirmation to take effect. This plugin provides developers with a traceable decision history, making it well suited for projects requiring long-term maintenance.