Summary

• add a thin POST /hsync CStore wrapper that delegates to chainstore_hsync(...)
• preserve per-call peer targeting by forwarding chainstore_peers as extra_peers
• add focused wrapper tests for default-peer behavior and explicit peer forwarding

Verification

• pass: python -m compileall extensions/business/cstore/cstore_manager_api.py extensions/business/cstore/test_cstore_manager_api.py
• pass: python -m unittest discover -s extensions/business/cstore -p 'test_*.py'

Dependency

• pairs with Ratio1/naeural_core PR Develop #197 for the runtime hsync implementation

Notes

• this PR intentionally keeps the edge layer thin and does not add aliases or automatic startup sync logic