⚡ [performance improvement] Use Buffer.allocUnsafe for VBANChatPacket.toUDPPacket

[google-labs-jules]

💡 What: Replaced Buffer.alloc(676) with Buffer.allocUnsafe(676) in VBANChatPacket.toUDPPacket and added a comment documenting its safety.
🎯 Why: Buffer.alloc initializes the buffer with zeros, taking O(n) time. Since the entire buffer is immediately overwritten with dataBuffer.write(...) (padded to 676 bytes), this zero-filling was unnecessary overhead. Using allocUnsafe skips this step, safely improving performance. Memory doesn't leak as it gets fully overwritten right after.
📊 Measured Improvement: In benchmark script isolated for VBANChatPacket.toUDPPacket, operations per second increased from 466,237 ops/s to 500,272 ops/s, reducing conversion latency and improving throughput by roughly ~7%.

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PR created automatically by Jules for task 4655410120809017939 started by @thib3113

[google-labs-jules]

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[github-actions]

📊 VBAN Packet Performance (PR vs Main)

Benchmark	Main Branch	PR Branch	Change
Parsing (ping packet)	654,480 ops/sec	652,157 ops/sec (±0.01%)	-0.36%
Conversion (ping packet)	288,495 ops/sec	299,225 ops/sec (±0.03%)	🚀 +3.72%
Parsing (audio packet)	2,542,713 ops/sec	2,567,269 ops/sec (±0.01%)	+0.97%
Conversion (audio packet)	3,823,295 ops/sec	3,716,932 ops/sec (±0.01%)	🐢 -2.78%
Parsing (serial packet)	2,670,342 ops/sec	2,611,609 ops/sec (±0.01%)	🐢 -2.20%
Conversion (serial packet)	4,066,212 ops/sec	3,818,803 ops/sec (±0.01%)	🐢 -6.08%
Parsing (text packet)	2,351,887 ops/sec	2,359,174 ops/sec (±0.01%)	+0.31%
Conversion (text packet)	3,352,408 ops/sec	3,060,078 ops/sec (±0.01%)	🐢 -8.72%

[sonarqubecloud]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarQube Cloud