feat: Modular v2 enhancements — 12 gaps + modernization #208

Job	Run time
Validate Examples (multi-tenant-app)	20s
Validate Examples (instance-aware-db)	15s
Validate Examples (feature-flag-proxy)	20s
Validate Examples (advanced-logging)	20s
Validate Examples (testing-scenarios)	27s
Validate Examples (reverse-proxy)	20s
Validate Examples (basic-app)	18s
Validate Examples (nats-eventbus)	18s
Validate Examples (verbose-debug)	18s
Validate Examples (http-client)	22s
Validate Examples (logger-reconfiguration)	18s
Validate Examples (health-aware-reverse-proxy)	27s
Validate Examples (logmasker-example)	15s
Validate Examples (observer-pattern)	18s
Validate Examples (multi-engine-eventbus)	31s
Examples Overview	0s
	5m 7s

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