Revert #4784: restore dist/docs versioned snapshots accidentally deleted

dist/docs/2.5.3/community/working-group.mdx

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+---
+title: Working Group
+---
+
+
+The Ad Context Protocol Working Group is an open community of platform providers, advertisers, agencies, and developers working together to shape the future of AI-powered advertising.
+
+## Join the Discussion
+
+Our primary collaboration happens through Slack:
+
+**[→ Join the AdCP Community on Slack](https://join.slack.com/t/agenticads/shared_invite/zt-3h15gj6c0-FRTrD_y4HqmeXDKBl2TDEA)**
+
+## What We Discuss
+
+- **Protocol Development**: Propose and discuss new features and improvements
+- **Implementation Questions**: Get help implementing AdCP in your platform
+- **Use Cases**: Share how you're using AdCP in real-world scenarios
+- **Best Practices**: Learn from others' experiences and share your own
+- **Future Direction**: Help shape the roadmap for AdCP
+
+## How to Participate
+
+1. **Start a Discussion**: Share ideas, ask questions, or propose changes
+2. **Join Conversations**: Comment on existing discussions
+3. **Share Experiences**: Tell us about your implementation journey
+4. **Help Others**: Answer questions and share your expertise
+
+## Stay Updated
+
+- **Join Slack Channels**: Participate in topic-specific discussions
+- **Follow Announcements**: Important updates are posted in the #announcements channel
+- **Star the Project**: Show your support on GitHub and stay connected
+
+## Other Ways to Connect
+
+- **Email**: For private inquiries, reach out to hello@adcontextprotocol.org
+- **GitHub Issues**: Report bugs or request features in the [issue tracker](https://github.com/adcontextprotocol/adcp/issues)
+
+We look forward to collaborating with you!

dist/docs/2.5.3/contributing/testable-examples-demo.md

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+---
+testable: true
+---
+
+# Testable Documentation Examples
+
+This page demonstrates the testable documentation feature with complete, working code examples that execute against the live test agent.
+
+## JavaScript Example
+
+### List Creative Formats
+
+```javascript
+import { testAgent } from '@adcp/client/testing';
+
+const result = await testAgent.listCreativeFormats({});
+
+console.log(`✓ Found ${result.data?.formats?.length || 0} creative formats`);
+```
+
+## Python Example
+
+### List Creative Formats
+
+```python
+import asyncio
+from adcp import test_agent
+
+async def list_formats():
+    result = await test_agent.simple.list_creative_formats()
+    print(f"✓ Found {len(result.formats)} supported creative formats")
+
+asyncio.run(list_formats())
+```
+
+## CLI Example
+
+### Using uvx (Python CLI)
+
+```bash
+uvx adcp \
+  https://test-agent.adcontextprotocol.org/mcp \
+  list_creative_formats \
+  '{}' \
+  --auth 1v8tAhASaUYYp4odoQ1PnMpdqNaMiTrCRqYo9OJp6IQ
+```
+
+## How Testable Documentation Works
+
+When `testable: true` is set in the frontmatter, ALL code blocks on this page are extracted and executed during testing.
+
+### Running Tests
+
+```bash
+# Run all tests including snippet validation
+npm run test:all
+```
+
+### Requirements for Testable Pages
+
+Every code block must:
+- Be complete and self-contained
+- Import all required dependencies
+- Execute without errors
+- Produce output confirming success
+
+### When to Mark Pages as Testable
+
+Mark a page `testable: true` ONLY when:
+- ALL code blocks are complete working examples
+- No code fragments or incomplete snippets
+- All examples use test agent credentials
+- Dependencies are installed (`@adcp/client`, `adcp`)
+
+### When NOT to Mark Pages as Testable
+
+Do NOT mark pages testable that contain:
+- Code fragments showing patterns
+- Incomplete examples
+- Conceptual pseudocode
+- Examples requiring production credentials
+- Mixed testable and non-testable content
+
+See [Testable Snippets Guide](./testable-snippets.md) for complete documentation.