⚡ optimize json serialization in simple_seismic_server

[Igor Holt (igor-holt)]

💡 What: Modified send_json in simple_seismic_server.py to use json.dumps(data, separators=(',', ':')).encode('utf-8') instead of indent=2. Also added charset=utf-8 to the Content-Type header.
🎯 Why: Using indent=2 creates unnecessarily large JSON payloads and wastes CPU cycles on formatting. separators=(',', ':') creates the most compact payload possible, reducing network bandwidth and lowering CPU usage, which is suitable for production APIs.
📊 Measured Improvement: Measured RPS on /api/health using a concurrent urllib bench script with 4 threads. Baseline (with indent=2) was ~863 RPS. Optimized version achieved ~1095 RPS, representing an approximate 27% increase in throughput.

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PR created automatically by Jules for task 7750359726013981475 started by Igor Holt (@igor-holt)

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[Igor Holt (igor-holt)]

Superseded by #194 (same JSON serialization optimization). Closing duplicate to reduce babysit noise.

[google-labs-jules]

Superseded by #194 (same JSON serialization optimization). Closing duplicate to reduce babysit noise.

Understood. Acknowledging that this work is now superseded by #194 and stopping work on this task.