feat: initial release of zenstack-docs-plugin

ZenStack v3 plugin that generates rich, browsable Markdown documentation
from ZModel schemas. Includes per-entity pages with fields, relationships,
access policies, validation rules, Mermaid ER diagrams, cross-links,
and optional AI agent skill file (SKILL.md) generation.

Key capabilities:
- Full-schema ERD with SVG export via beautiful-mermaid
- Correct cardinality detection (1:1, 1:1?, 1:M, M:1, M:1?, M:M)
- Per-page SVG diagrams (diagramFormat: svg | both | mermaid)
- Multi-file schema support with source file tracking
- 149 tests (unit + integration)
- eslint-config-canonical for strict code conventions
- CI/CD via GitHub Actions with pnpm

Author: sheldonj

.github/workflows/ci.yml

@@ -0,0 +1,41 @@
+name: CI
+
+on:
+  push:
+    branches: [main]
+  pull_request:
+    branches: [main]
+
+jobs:
+  build-and-test:
+    runs-on: ubuntu-latest
+    strategy:
+      matrix:
+        node-version: [20, 22]
+
+    steps:
+      - uses: actions/checkout@v4
+
+      - name: Install pnpm
+        uses: pnpm/action-setup@v4
+
+      - name: Use Node.js ${{ matrix.node-version }}
+        uses: actions/setup-node@v4
+        with:
+          node-version: ${{ matrix.node-version }}
+          cache: pnpm
+
+      - name: Install dependencies
+        run: pnpm install --frozen-lockfile
+
+      - name: Type check
+        run: pnpm run typecheck
+
+      - name: Lint
+        run: pnpm run lint
+
+      - name: Build
+        run: pnpm run build
+
+      - name: Test
+        run: pnpm test

.github/workflows/publish.yml

@@ -0,0 +1,39 @@
+name: Publish to npm
+
+on:
+  release:
+    types: [published]
+
+jobs:
+  publish:
+    runs-on: ubuntu-latest
+    permissions:
+      contents: read
+      id-token: write
+
+    steps:
+      - uses: actions/checkout@v4
+
+      - name: Install pnpm
+        uses: pnpm/action-setup@v4
+
+      - name: Use Node.js 22
+        uses: actions/setup-node@v4
+        with:
+          node-version: 22
+          registry-url: https://registry.npmjs.org
+          cache: pnpm
+
+      - name: Install dependencies
+        run: pnpm install --frozen-lockfile
+
+      - name: Build
+        run: pnpm run build
+
+      - name: Test
+        run: pnpm test
+
+      - name: Publish
+        run: pnpm publish --provenance --access public --no-git-checks
+        env:
+          NODE_AUTH_TOKEN: ${{ secrets.NPM_TOKEN }}

.gitignore

@@ -0,0 +1,6 @@
+node_modules/
+dist/
+*.tsbuildinfo
+package-lock.json
+.env
+*.local