host: document GATT error status encoding#2252
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Clarify that ble_gatt_error.status uses NimBLE host return-code ranges instead of raw ATT error values. This helps callers decode application-specific ATT errors such as 0x0181 by first removing the ATT base.
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Summary
ble_gatt_error.statususes NimBLE host return-code ranges, not raw ATT error values.BLE_HS_ATT_ERR(code), including0x0181 = 0x100 + 0x81.Closes #1827
Testing
git diff --check origin/master...HEADpython .github/check_doxygen.py HEAD origin/master(doxygenis not installed locally)clang-formatis not installed locally)