<purpose>
Create structured `.planning/HANDOFF.json` and `.continue-here.md` handoff files to preserve complete work state across sessions. The JSON provides machine-readable state for `/gsd-resume-work`; the markdown provides human-readable context.
</purpose>

<required_reading>
Read all files referenced by the invoking prompt's execution_context before starting.
</required_reading>

<process>

<step name="detect">
Find current phase directory from most recently modified files:

```bash
# Find most recent phase directory with work
(ls -lt .planning/phases/*/PLAN.md 2>/dev/null || true) | head -1 | grep -oP 'phases/\K[^/]+' || true
```

If no active phase detected, ask user which phase they're pausing work on.
</step>

<step name="gather">
**Collect complete state for handoff:**

1. **Current position**: Which phase, which plan, which task
2. **Work completed**: What got done this session
3. **Work remaining**: What's left in current plan/phase
4. **Decisions made**: Key decisions and rationale
5. **Blockers/issues**: Anything stuck
6. **Human actions pending**: Things that need manual intervention (MCP setup, API keys, approvals, manual testing)
7. **Background processes**: Any running servers/watchers that were part of the workflow
8. **Files modified**: What's changed but not committed

Ask user for clarifications if needed via conversational questions.

**Also inspect SUMMARY.md files for false completions:**
```bash
# Check for placeholder content in existing summaries
grep -l "To be filled\|placeholder\|TBD" .planning/phases/*/*.md 2>/dev/null || true
```
Report any summaries with placeholder content as incomplete items.
</step>

<step name="write_structured">
**Write structured handoff to `.planning/HANDOFF.json`:**

```bash
timestamp=$(node ".agent/get-shit-done/bin/gsd-tools.cjs" current-timestamp full --raw)
```

```json
{
  "version": "1.0",
  "timestamp": "{timestamp}",
  "phase": "{phase_number}",
  "phase_name": "{phase_name}",
  "phase_dir": "{phase_dir}",
  "plan": {current_plan_number},
  "task": {current_task_number},
  "total_tasks": {total_task_count},
  "status": "paused",
  "completed_tasks": [
    {"id": 1, "name": "{task_name}", "status": "done", "commit": "{short_hash}"},
    {"id": 2, "name": "{task_name}", "status": "done", "commit": "{short_hash}"},
    {"id": 3, "name": "{task_name}", "status": "in_progress", "progress": "{what_done}"}
  ],
  "remaining_tasks": [
    {"id": 4, "name": "{task_name}", "status": "not_started"},
    {"id": 5, "name": "{task_name}", "status": "not_started"}
  ],
  "blockers": [
    {"description": "{blocker}", "type": "technical|human_action|external", "workaround": "{if any}"}
  ],
  "human_actions_pending": [
    {"action": "{what needs to be done}", "context": "{why}", "blocking": true}
  ],
  "decisions": [
    {"decision": "{what}", "rationale": "{why}", "phase": "{phase_number}"}
  ],
  "uncommitted_files": [],
  "next_action": "{specific first action when resuming}",
  "context_notes": "{mental state, approach, what you were thinking}"
}
```
</step>

<step name="write">
**Write handoff to `.planning/phases/XX-name/.continue-here.md`:**

```markdown
---
phase: XX-name
task: 3
total_tasks: 7
status: in_progress
last_updated: [timestamp from current-timestamp]
---

<current_state>
[Where exactly are we? Immediate context]
</current_state>

<completed_work>

- Task 1: [name] - Done
- Task 2: [name] - Done
- Task 3: [name] - In progress, [what's done]
</completed_work>

<remaining_work>

- Task 3: [what's left]
- Task 4: Not started
- Task 5: Not started
</remaining_work>

<decisions_made>

- Decided to use [X] because [reason]
- Chose [approach] over [alternative] because [reason]
</decisions_made>

<blockers>
- [Blocker 1]: [status/workaround]
</blockers>

<context>
[Mental state, what were you thinking, the plan]
</context>

<next_action>
Start with: [specific first action when resuming]
</next_action>
```

Be specific enough for a fresh the agent to understand immediately.

Use `current-timestamp` for last_updated field. You can use init todos (which provides timestamps) or call directly:
```bash
timestamp=$(node ".agent/get-shit-done/bin/gsd-tools.cjs" current-timestamp full --raw)
```
</step>

<step name="commit">
```bash
node ".agent/get-shit-done/bin/gsd-tools.cjs" commit "wip: [phase-name] paused at task [X]/[Y]" --files .planning/phases/*/.continue-here.md .planning/HANDOFF.json
```
</step>

<step name="confirm">
```
✓ Handoff created:
  - .planning/HANDOFF.json (structured, machine-readable)
  - .planning/phases/[XX-name]/.continue-here.md (human-readable)

Current state:

- Phase: [XX-name]
- Task: [X] of [Y]
- Status: [in_progress/blocked]
- Blockers: [count] ({human_actions_pending count} need human action)
- Committed as WIP

To resume: /gsd-resume-work

```
</step>

</process>

<success_criteria>
- [ ] .continue-here.md created in correct phase directory
- [ ] All sections filled with specific content
- [ ] Committed as WIP
- [ ] User knows location and how to resume
</success_criteria>
