docs(work): scaffold work-system-v1 epic + story

docs/work/work-system-v1/_epic.md

@@ -0,0 +1,28 @@
+---
+id: work-system-v1
+prd: null
+title: Work system v1 (MVP) — state tracking + pnpm work CLI
+type: epic
+status: in-progress
+features: [scripts]
+created: 2026-05-13
+---
+
+## Goal
+Filesystem-only state tracking for `docs/work/` + a `pnpm work` CLI with
+status / next / rebuild-state subcommands. Foundation for future
+orchestration; no agent dispatch in v1.
+
+## Why
+Agents and humans both need a fast way to see "what's the next unblocked
+work?" and "where are we?" — without scanning every story file by hand.
+
+## Out of scope (v2+)
+- Sandcastle / agent dispatch
+- PRD and ADR elicitation skills
+- Decomposer / implementer / reviewer prompts
+- DAG analysis (depends-on / blocks)
+- Pre-commit hooks (the state file is rebuilt manually for now)
+
+## Stories
+- [ ] [01 — State builder + CLI](01-state-builder-and-cli/_story.md)