fix: commit phase artifacts when created (#12)

Each phase workflow now commits its artifacts immediately:
- discuss-phase.md commits CONTEXT.md
- research-phase.md commits RESEARCH.md
- plan-phase.md commits PLAN.md (and DISCOVERY.md)
- execute-phase.md commits only execution artifacts (SUMMARY, STATE, ROADMAP)

Planning artifacts are inputs to execution and should be saved when created.
Execution artifacts are outputs and are committed after execution completes.

Closes #12

get-shit-done/workflows/discuss-phase.md

@@ -215,6 +215,25 @@ Created: .planning/phases/${PHASE}-${SLUG}/${PHASE}-CONTEXT.md
 
 </step>
 
+<step name="git_commit">
+Commit phase context:
+
+```bash
+git add .planning/phases/${PHASE}-${SLUG}/${PHASE}-CONTEXT.md
+git commit -m "$(cat <<'EOF'
+docs(${PHASE}): capture phase context
+
+Phase ${PHASE}: ${PHASE_NAME}
+- Vision and goals documented
+- Essential requirements identified
+- Scope boundaries defined
+EOF
+)"
+```
+
+Confirm: "Committed: docs(${PHASE}): capture phase context"
+</step>
+
 </process>
 
 <success_criteria>
@@ -223,5 +242,6 @@ Created: .planning/phases/${PHASE}-${SLUG}/${PHASE}-CONTEXT.md
 - Vision gathered through collaborative thinking (not interrogation)
 - User's imagination captured: how it works, what's essential, what's out of scope
 - CONTEXT.md created in phase directory
+- CONTEXT.md committed to git
 - User knows next steps (typically: research or plan the phase)
 </success_criteria>

get-shit-done/workflows/execute-phase.md

@@ -1285,15 +1285,14 @@ ROADMAP_FILE=".planning/ROADMAP.md"
   </step>
 
 <step name="git_commit_metadata">
-Commit plan metadata (SUMMARY + STATE + ROADMAP):
+Commit execution metadata (SUMMARY + STATE + ROADMAP):
 
 **Note:** All task code has already been committed during execution (one commit per task).
-This final commit captures plan completion metadata only.
+PLAN.md was already committed during plan-phase. This final commit captures execution results only.
 
-**1. Stage planning artifacts:**
+**1. Stage execution artifacts:**
 
 ```bash
-git add .planning/phases/XX-name/{phase}-{plan}-PLAN.md
 git add .planning/phases/XX-name/{phase}-{plan}-SUMMARY.md
 git add .planning/STATE.md
 ```
@@ -1308,7 +1307,7 @@ git add .planning/ROADMAP.md
 
 ```bash
 git status
-# Should show only planning artifacts, no code files
+# Should show only execution artifacts (SUMMARY, STATE, ROADMAP), no code files
 ```
 
 **4. Commit metadata:**

get-shit-done/workflows/plan-phase.md

@@ -391,6 +391,30 @@ This ensures every PLAN.md gets optimal context automatically assembled via depe
 For multi-plan phases: each plan has focused scope, references previous plan summaries (via frontmatter selection), last plan's success criteria includes "Phase X complete".
 </step>
 
+<step name="git_commit">
+Commit phase plan(s):
+
+```bash
+# Stage all PLAN.md files for this phase
+git add .planning/phases/${PHASE}-*/${PHASE}-*-PLAN.md
+
+# Also stage DISCOVERY.md if it was created during mandatory_discovery
+git add .planning/phases/${PHASE}-*/DISCOVERY.md 2>/dev/null
+
+git commit -m "$(cat <<'EOF'
+docs(${PHASE}): create phase plan
+
+Phase ${PHASE}: ${PHASE_NAME}
+- [N] plan(s) created
+- [X] total tasks defined
+- Ready for execution
+EOF
+)"
+```
+
+Confirm: "Committed: docs(${PHASE}): create phase plan"
+</step>
+
 <step name="offer_next">
 ```
 Phase plan created: .planning/phases/XX-name/{phase}-01-PLAN.md
@@ -451,5 +475,6 @@ Phase planning complete when:
 - [ ] Each task: Type, Files (if auto), Action, Verify, Done
 - [ ] Checkpoints properly structured
 - [ ] If RESEARCH.md exists: "don't hand-roll" items NOT being custom-built
+- [ ] PLAN file(s) committed to git
 - [ ] User knows next steps
 </success_criteria>

get-shit-done/workflows/research-phase.md

@@ -378,6 +378,25 @@ What's next?
 ```
 </step>
 
+<step name="git_commit">
+Commit phase research:
+
+```bash
+git add .planning/phases/${PHASE}-${SLUG}/${PHASE}-RESEARCH.md
+git commit -m "$(cat <<'EOF'
+docs(${PHASE}): complete phase research
+
+Phase ${PHASE}: ${PHASE_NAME}
+- Standard stack identified
+- Architecture patterns documented
+- Common pitfalls catalogued
+EOF
+)"
+```
+
+Confirm: "Committed: docs(${PHASE}): complete phase research"
+</step>
+
 </process>
 
 <success_criteria>
@@ -394,6 +413,7 @@ What's next?
 - [ ] "Don't hand-roll" list is clear and actionable
 - [ ] Common pitfalls catalogued
 - [ ] Confidence levels assigned honestly
+- [ ] RESEARCH.md committed to git
 - [ ] User knows next steps (plan phase)
 </success_criteria>