fix: synthesizer commits all research files together

Researchers now skip commit step when spawned in parallel.
Synthesizer agent commits STACK.md, FEATURES.md, ARCHITECTURE.md,
PITFALLS.md, and SUMMARY.md in one atomic commit.

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

agents/gsd-project-researcher.md

@@ -753,7 +753,11 @@ Create files in `.planning/research/`:
 6. **COMPARISON.md** - If comparison mode
 7. **FEASIBILITY.md** - If feasibility mode
 
-## Step 6: Commit Research
+## Step 6: Commit Research (if not in parallel mode)
+
+**Check your prompt:** If it says "DO NOT commit", skip this step. Another agent handles committing.
+
+**If committing (standalone mode):**
 
 ```bash
 git add .planning/research/
@@ -859,7 +863,7 @@ Research is complete when:
 - [ ] All findings have confidence levels
 - [ ] Output files created in `.planning/research/`
 - [ ] SUMMARY.md includes roadmap implications
-- [ ] Research files committed to git
+- [ ] Research files committed to git (unless prompt says "DO NOT commit")
 - [ ] Structured return provided to orchestrator
 
 Research quality indicators:

agents/gsd-research-synthesizer.md

@@ -20,7 +20,7 @@ Your job: Create a unified research summary that informs roadmap creation. Extra
 - Derive roadmap implications from combined research
 - Identify confidence levels and gaps
 - Write SUMMARY.md
-- Commit the file
+- Commit ALL research files (researchers write but don't commit — you commit everything)
 </role>
 
 <downstream_consumer>
@@ -121,11 +121,20 @@ Use template: ~/.claude/get-shit-done/templates/research-project/SUMMARY.md
 
 Write to `.planning/research/SUMMARY.md`
 
-## Step 7: Commit
+## Step 7: Commit All Research
+
+The 4 parallel researcher agents write files but do NOT commit. You commit everything together.
 
 ```bash
-git add .planning/research/SUMMARY.md
-git commit -m "docs: synthesize project research summary
+git add .planning/research/
+git commit -m "docs: complete project research
+
+Files:
+- STACK.md
+- FEATURES.md
+- ARCHITECTURE.md
+- PITFALLS.md
+- SUMMARY.md
 
 Key findings:
 - Stack: [one-liner]