Add Phase 8 features: analytics, reporting, health check

- Add pageviews table and /api/v1/analytics/pageview endpoint
- Abuse reporting API already existed at /api/v1/reports
- Add health_check.py script for monitoring
- ChatGPT additions: report modal UI, analytics tracking JS

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude Opus 4.5 <[email protected]>

registry-seeds/official/explain/config.yaml

@@ -0,0 +1,29 @@
+name: explain
+version: "1.0.0"
+description: "Explain code or concepts clearly"
+category: education
+tags:
+  - explanation
+  - learning
+  - code
+arguments:
+  - name: audience
+    flag: "--audience"
+    default: "general"
+    description: "Audience level: beginner, general, expert"
+  - name: format
+    flag: "--format"
+    default: "paragraph"
+    description: "Output format: paragraph, bullet, or step-by-step"
+steps:
+  - type: prompt
+    provider: "claude"
+    template: |
+      You are a clear and concise explainer.
+      Audience: {audience}
+      Format: {format}
+
+      Explain the following content:
+      {input}
+    output_var: explanation
+output: "{explanation}"