docs(sdlc): reformat work products to audited reference layout

scripts/sdlc-seed/README.md

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+# SDLC work-product seed
+
+Regenerates every ISO/IEC 29110 work product under `sdlc/` from controlled project
+data, in the layout of the audited `200-TAS-25-001-00` reference package: Thai
+section headings, a `Document No` control block, and Secretary / Reviewer /
+Approval signature tables on every document.
+
+`sdlc/` is generated output. Edit the data files here, never the Markdown.
+
+## Files
+
+| File | Contents |
+|---|---|
+| `project.mjs` | People, dates, project code, scope, deliverables, Customer Requirements (CR01–CR14) |
+| `engineering.mjs` | Software Requirements (SR01–SR09), Software Units, Test Cases, and the CR→SR→Unit→Test mapping |
+| `history.mjs` | Work Schedule, reporting periods, meetings, Correction Register, Change Reports |
+| `lib.mjs` | Buddhist-calendar dates, Markdown tables, signature blocks |
+| `format.mjs` | The shared work-product scaffold |
+| `docs-*.mjs` | One generator per work product |
+| `build.mjs` | Writes all documents and checks no folder is left empty |
+
+## Usage
+
+```bash
+node scripts/sdlc-seed/build.mjs      # regenerate sdlc/ only
+bash scripts/build-sdlc-delivery.sh   # seed, render to PDF, then verify
+```
+
+The traceability chain is validated at import time: every Customer Requirement
+must resolve to existing Software Requirements, Software Units, and a Test Case,
+or the build fails.