v0.6.2

Changed

• Clarified MCP tool-selection guidance so agents use synchronous exec for short, result-dependent commands and asynchronous start_exec for long, uncertain, or parallelizable work.
• start_exec now explicitly guides agents to continue independent work and defer get_exec_status polling until a synchronization point.
• Documented the same exec versus start_exec selection rules in the public README and clarified immutable versus moving container tags.
• Added tag-driven GitHub Release automation with changelog-derived notes plus an idempotent historical-release reconciliation path.