Add composable --research flag to /gsd:quick that spawns a focused gsd-phase-researcher before planning. Investigates implementation approaches, library options, and pitfalls for the task. Addresses the middle-ground gap between quick (no quality agents) and full milestone workflows. All three flags are composable: --discuss --research --full gives the complete quality pipeline. Made-with: Cursor Co-authored-by: ralberts3 <ralberts3@gatech.edu>