feat(api-ref): add CCIP API reference documentation

.github/workflows/docs.yml

@@ -0,0 +1,50 @@
+name: Documentation
+
+on:
+  pull_request:
+    paths:
+      - 'ccip-sdk/src/**'
+      - 'ccip-cli/src/**'
+      - 'ccip-api-ref/**'
+      - 'package.json'
+      - 'package-lock.json'
+  push:
+    branches:
+      - main
+    paths:
+      - 'ccip-sdk/src/**'
+      - 'ccip-cli/src/**'
+      - 'ccip-api-ref/**'
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+
+      - name: Setup Node.js
+        uses: actions/setup-node@v4
+        with:
+          node-version: 24
+          cache: 'npm'
+
+      - name: Install dependencies
+        run: npm ci
+
+      - name: Run checks
+        run: npm run check -w ccip-api-ref
+
+      - name: Generate API docs from OpenAPI spec
+        run: npm run gen-api -w ccip-api-ref
+
+      - name: Build documentation
+        run: npm run docs:build
+
+      - name: Upload build artifact
+        if: github.ref == 'refs/heads/main'
+        uses: actions/upload-artifact@v4
+        with:
+          name: docs-build
+          path: ccip-api-ref/build
+          retention-days: 7

.gitignore

@@ -6,3 +6,19 @@ dist/
 coverage-summary.txt
 .coverage
 .c8_output
+
+# Vercel
+.vercel/
+
+# Docusaurus
+.docusaurus/
+build/
+ccip-api-ref/docs-sdk/*
+!ccip-api-ref/docs-sdk/introduction.mdx
+!ccip-api-ref/docs-sdk/guides/
+ccip-api-ref/docs-api/*
+!ccip-api-ref/docs-api/ccip-api.info.mdx
+!ccip-api-ref/docs-api/sidebar.d.ts.vercel
+!ccip-api-ref/docs-api/v1/
+ccip-api-ref/docs-api/v1/*
+!ccip-api-ref/docs-api/v1/sidebar.d.ts

ccip-api-ref/.gitignore

@@ -0,0 +1 @@
+static/llms.txt

ccip-api-ref/.prettierignore

@@ -0,0 +1,9 @@
+# Generated directories
+.docusaurus/
+build/
+docs-sdk/
+docs-api/
+test-results/
+
+# Dependencies
+node_modules/