Removes the deprecated examples/python/12-agent-dashboard/ directory
which contained XSS vulnerabilities via innerHTML usage. This example
was marked for removal in v0.5.0 due to unsafe rendering patterns.
- Deleted examples/python/12-agent-dashboard/ entirely
- Updated examples/README.md to redirect to secure alternatives (15-dashboard-test)
- Removed obsolete reference in 13-real-dashboard docstring
The example used innerHTML with API-derived data in 7+ locations,
creating stored XSS risks. Users should use examples 13 or 15 which
implement secure component-based rendering.