test: property-based and adversarial input tests (#717) #1201

Job	Run time
Dependency Review	4s
Workflow Lint	34s
Dependency Security Signals	0s
Developer Portal	0s
OpenAPI Guardrail / OpenAPI Guardrail	36s
Backend Solution Regression	0s
Container Integration (Testcontainers)	0s
Load and Concurrency Harness	0s
Demo Director Smoke	0s
E2E Cross-Browser Matrix	0s
Visual Regression	0s
E2E Smoke	0s
	1m 14s

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