Issue #3586150: Add site architecture context source. (!126) · Merge requests · project / ai_context

Adds the ai_context_site_architecture submodule as a CCC-governed Drupal site behavior contract generator.

Summary:

Compiles Drupal surfaces into structured site behavior contracts.
Keeps MCP optional while producing MCP-ready resource payloads.
Adds CCC draft writing, Drush export, schema docs, resource template support, and tests.
Refactors generation behind collector and post-processor services.

Validation run locally:

PHP 8.3 syntax lint across modules/ai_context_site_architecture/src and tests/src: passed.
git diff --check: passed.
composer validate --no-check-publish for modules/ai_context_site_architecture: passed with Composer root-version notice.

Note: PHPUnit was not run locally because this checkout does not include a runnable Drupal test runtime/vendor/bin/phpunit.

Issue #3586150: Add site architecture context source.