v1.2.0 "Stand" - Added a TemplateEngineInterface, TemplateEngineManager

[greenarmor]

Added a TemplateEngineInterface, TemplateEngineManager, and default ComponentTemplateEngine to enable pluggable rendering drivers for Bamboo’s landing experience.

Updated LandingPageContent to resolve HTML through the configured engine and introduced etc/view.php plus container bindings so applications can select custom view drivers in configuration.

Documented the new view schema, strengthened validation and tests for engine overrides, and described the pluggable layer in the README.

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This discussion was created from the release v1.2.0 "Stand" - Added a TemplateEngineInterface, TemplateEngineManager.