Initial workflow template

- docs/workflow/: INDEX, ISSUE-FORMAT, WORKFLOW, AGENT-PROMPTS
- .issues/: INDEX, example issue
- .hooks/: issue-linter.js (pre-commit validator)
- package.json with setup script
- README.md

See docs/workflow/INDEX.md to get started.

.issues/INDEX.md

@@ -0,0 +1,35 @@
+# Issue Index
+
+All open and closed issues for this project.
+
+## Open Issues
+
+| # | Title | Priority | Depends On | Status |
+|---|---|---|---|---|
+| — | No open issues | — | — | — |
+
+## Closed Issues
+
+| # | Title | Completed |
+|---|---|---|
+| — | No closed issues | — |
+
+## Legend
+
+- **Priority**: low < medium < high < critical
+- **Status**: open → in-progress → done (or blocked)
+- **Depends On**: Blocked until these issues are done
+
+## Creating a New Issue
+
+1. Pick the next number (highest + 1)
+2. Create `/.issues/<number>-<slug>.md`
+3. Use format from `/docs/workflow/ISSUE-FORMAT.md`
+4. Add entry to this table
+5. See `/docs/workflow/AGENT-PROMPTS.md` for creation prompt
+
+## Workflow Overview
+
+See `/docs/workflow/INDEX.md` for quick start.
+
+See `/docs/workflow/WORKFLOW.md` for detailed stages.