Issue #3607894: Refresh codebase metrics and add test-suite and architecture-surface sections (!22) · Merge requests · project / audit_trail

Follow-up to the codebase metrics page (#3607869). Refreshes all figures from 1.x and adds two sections:

Test suite - automated test classes counted by type (Unit, Kernel, Functional), with a test-method count column, as a chart and table.
Architecture surface - counts of the Drupal building blocks (services, plugins by type, hook implementations, routes, permissions, forms, controllers, entity types, config schema) across the module and its submodules.

Same static inline-SVG approach (no JavaScript or charting plugin). Verified with mkdocs build --strict.

Snapshot (1.x, 2026-07-02): 30,652 lines of code across 218 files; 50 test classes / 409 methods; 28 services, 4 plugins.

Issue #3607894: Refresh codebase metrics and add test-suite and architecture-surface sections