Standardize on *-CONTEXT.md glob pattern to match files like
03-CONTEXT.md across all workflows.
Files updated:
- commands/gsd/plan-phase.md
- commands/gsd/research-phase.md
- get-shit-done/workflows/discuss-phase.md
- get-shit-done/workflows/resume-project.md
Closes#219
Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>