refactor: remove algorithm selection machinery, make cpp_port the sol… #198

Job	Run time
🔒 Security Audit	8m 34s
🔍 Quick Sanity Check	10m 39s
📝 Format Check	9m 17s
🔨 Build Check (Skipped - use local)	2s
📊 CI Summary	2s
	28m 34s

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