Consolidate OpenAI server: unify implementations, add multi-protocol support #365

Job	Run time
Start gate (abort window)	2s
Build WebUI assets (shared)	1m 30s
Code style (spotless) + package graph	49s
C++ Tests Ubuntu Latest x86_64	5m 40s
Test (vmlens interleavings)	1m 7s
Build and Test macOS 14 arm64 (Metal)	2m 47s
Build and Test Windows 2025 x86_64 (VS 2026)	17m 7s
Cross-Compile Android aarch64 (OpenCL/Adreno)	5m 27s
Build and Test macOS 15 arm64 (Metal)	2m 48s
Build and Test macOS 15 arm64 (no Metal)	2m 5s
Cross-Compile Android aarch64	4m 59s
Cross-Compile Linux aarch64 (LTS)	4m 46s
Cross-Compile manylinux2014 x86_64	4m 56s
Build and Test Windows 2025 x86 (VS 2026)	11m 9s
Cross-Compile manylinux_2_28 x86_64 (CUDA)	1h 20m 47s
Java Tests Ubuntu Latest x86_64	13m 12s
Java Tests Windows 2025 x86_64 (VS 2026)	15m 25s
Java Tests macOS 14 arm64 (Metal)	12m 45s
Java Tests macOS 15 arm64 (Metal)	21m 11s
Java Tests macOS 15 arm64 (no Metal)	24m 5s
Package JARs	1m 23s
Report	25s
Check: v* tag	0s
Check: main branch / SNAPSHOT	0s
Publish Release to Central	0s
Attach Signed Binaries to GitHub Release	0s
Publish Snapshot to Central	0s
Update Snapshot Pre-release on GitHub	0s
	3h 54m 25s

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