Add ability to resume interrupted subagent executions using Task tool's
resume parameter. Tracks agent IDs during execution and enables seamless
continuation after session timeout, rate limits, or crashes.
- New /gsd:resume-task command for resuming interrupted agents
- Agent ID tracking in execute-phase workflow
- Dual storage: current-agent-id.txt (fast) + agent-history.json (audit)
- Auto-detection of interrupted agents in resume-project workflow
- File conflict warnings before resume
Closes#37
Co-Authored-By: davesienkowski <davesienkowski@users.noreply.github.com>
Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
6ba850712f