chore: pause work and save context handoff

.agent/skills/gsd-add-backlog/SKILL.md

@@ -0,0 +1,72 @@
+---
+name: gsd-add-backlog
+description: Add an idea to the backlog parking lot (999.x numbering)
+---
+
+
+<objective>
+Add a backlog item to the roadmap using 999.x numbering. Backlog items are
+unsequenced ideas that aren't ready for active planning — they live outside
+the normal phase sequence and accumulate context over time.
+</objective>
+
+<process>
+
+1. **Read ROADMAP.md** to find existing backlog entries:
+   ```bash
+   cat .planning/ROADMAP.md
+   ```
+
+2. **Find next backlog number:**
+   ```bash
+   NEXT=$(node ".agent/get-shit-done/bin/gsd-tools.cjs" phase next-decimal 999 --raw)
+   ```
+   If no 999.x phases exist, start at 999.1.
+
+3. **Create the phase directory:**
+   ```bash
+   SLUG=$(node ".agent/get-shit-done/bin/gsd-tools.cjs" generate-slug "$ARGUMENTS")
+   mkdir -p ".planning/phases/${NEXT}-${SLUG}"
+   touch ".planning/phases/${NEXT}-${SLUG}/.gitkeep"
+   ```
+
+4. **Add to ROADMAP.md** under a `## Backlog` section. If the section doesn't exist, create it at the end:
+
+   ```markdown
+   ## Backlog
+
+   ### Phase {NEXT}: {description} (BACKLOG)
+
+   **Goal:** [Captured for future planning]
+   **Requirements:** TBD
+   **Plans:** 0 plans
+
+   Plans:
+   - [ ] TBD (promote with /gsd-review-backlog when ready)
+   ```
+
+5. **Commit:**
+   ```bash
+   node ".agent/get-shit-done/bin/gsd-tools.cjs" commit "docs: add backlog item ${NEXT} — ${ARGUMENTS}" --files .planning/ROADMAP.md ".planning/phases/${NEXT}-${SLUG}/.gitkeep"
+   ```
+
+6. **Report:**
+   ```
+   ## 📋 Backlog Item Added
+
+   Phase {NEXT}: {description}
+   Directory: .planning/phases/{NEXT}-{slug}/
+
+   This item lives in the backlog parking lot.
+   Use /gsd-discuss-phase {NEXT} to explore it further.
+   Use /gsd-review-backlog to promote items to active milestone.
+   ```
+
+</process>
+
+<notes>
+- 999.x numbering keeps backlog items out of the active phase sequence
+- Phase directories are created immediately, so /gsd-discuss-phase and /gsd-plan-phase work on them
+- No `Depends on:` field — backlog items are unsequenced by definition
+- Sparse numbering is fine (999.1, 999.3) — always uses next-decimal
+</notes>