dsh-tool-git v0.1.3

Fixes the host tool-dispatcher crash on DeepSeek Harness 0.1.0-rc.6 (reported in #1, fixed by @taonokenshin in #2).

• Tighten @deepseek-ai/dsh-tools peer to ^0.1.0-rc.6 — prevents pnpm from hoisting an old dsh-tools copy whose scheduler symbol mismatches the host runtime
• Dev/test baseline moved to the 0.1.0-rc.6 line; 33 tests green
• Contributors section added