Config-driven adaptive-risk offloading algorithm

[lbedogni]

Summary

Rebased feature/dynamic-algorithm onto current main (was 4 ahead / 10 behind) and resolved the conflicts with the recently merged work (configurable EMA alpha #56, device-only network cost #57, profiler dead-code removal #58, and the print→logging change #60).

The branch adds a pluggable, config-driven offloading algorithm:

• New offloading: config section selecting static (legacy) or adaptive_risk, with a tunable adaptive_risk block (network EWMA, uncertainty/device-load weighting, hysteresis, probe probability). Documented in docs/config/server.full.yaml, src/server/settings.yaml, and docs/CONFIGURATION.md; validated in sciot.config.
• adaptive_risk.py (risk-aware, network-EWMA + device-load-aware layer selection) and a factory.py that builds the configured algorithm per device with per-device adaptive state.
• Adaptive/device-load-aware offloading wired into RequestHandler alongside the existing EMA-based timing updates.
• Repeating client/server inference-table headers and surfacing of server transport startup failures.

Conflict-resolution notes

• Kept both load_offloading_ema_alpha_config (from main) and the new load_offloading_config.
• The branch's inference-table header/row helpers were converted from print() to logger.info() to stay consistent with the merged structured-logging change (Replace print() with structured logging in request/endpoint handlers #60) and keep the tests/unit/test_no_print_statements.py regression test passing.
• Merged the offloading_algo.ema_alpha and new offloading.* config validation cases (both retained).

Test plan

• uv run pytest tests/unit tests/integration -m "not external_server and not model_artifact" — 201 passed, 1 skipped.
• uv run pytest tests/test_offloading_algo tests/test_mqtt_client tests/integration/test_http_end_to_end.py tests/integration/test_http_protocol_validation.py — 22 passed.
• No print( left in request_handler.py; no conflict markers remain.