feat: Modular v2 enhancements — 12 gaps + modernization #206

Job	Run time
Validate Examples (reverse-proxy)	17s
Validate Examples (instance-aware-db)	16s
Validate Examples (health-aware-reverse-proxy)	17s
Validate Examples (verbose-debug)	14s
Validate Examples (nats-eventbus)	30s
Validate Examples (feature-flag-proxy)	17s
Validate Examples (testing-scenarios)	18s
Validate Examples (advanced-logging)	17s
Validate Examples (logger-reconfiguration)	16s
Validate Examples (http-client)	20s
Validate Examples (observer-pattern)	18s
Validate Examples (basic-app)	19s
Validate Examples (multi-tenant-app)	21s
Validate Examples (multi-engine-eventbus)	30s
Validate Examples (logmasker-example)	17s
Examples Overview	-1s
	4m 46s

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