feat: implement SUB 1A (compliance config) read

Adds full support for reading device compliance configuration (2090-byte E5
response) containing record time, trigger/alarm levels, and project strings.

protocol.py:
- Implement read_compliance_config() two-step read (SUB 1A → E5)
- Fixed length 0x082A (2090 bytes)

models.py:
- Add ComplianceConfig dataclass with fields: record_time, sample_rate,
  trigger_level_geo, alarm_level_geo, max_range_geo, project strings
- Add compliance_config field to DeviceInfo

client.py:
- Implement _decode_compliance_config_into() to extract:
  * Record time float at offset +0x28 ✅
  * Trigger/alarm levels per-channel (heuristic parsing) 🔶
  * Project/setup strings from E5 payload
  * Placeholder for sample_rate (location TBD ❓)
- Update connect() to read SUB 1A after SUB 01, cache in device_info
- Add ComplianceConfig to imports

sfm/server.py:
- Add _serialise_compliance_config() JSON encoder
- Include compliance_config in /device/info response
- Updated _serialise_device_info() to output compliance config

Both record_time (at fixed offset 0x28) and project strings are ✅ CONFIRMED
from protocol reference §7.6. Trigger/alarm extraction uses heuristics
pending more detailed field mapping from captured data.

Sample rate remains undiscovered in the E5 payload — likely in the
mystery flags at offset +0x12 or requires a "fast mode" capture.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

sfm/server.py

@@ -53,7 +53,7 @@ except ImportError:
 
 from minimateplus import MiniMateClient
 from minimateplus.protocol import ProtocolError
-from minimateplus.models import DeviceInfo, Event, PeakValues, ProjectInfo, Timestamp
+from minimateplus.models import ComplianceConfig, DeviceInfo, Event, PeakValues, ProjectInfo, Timestamp
 from minimateplus.transport import TcpTransport, DEFAULT_TCP_PORT
 
 logging.basicConfig(
@@ -119,14 +119,33 @@ def _serialise_project_info(pi: Optional[ProjectInfo]) -> Optional[dict]:
     }
 
 
+def _serialise_compliance_config(cc: Optional["ComplianceConfig"]) -> Optional[dict]:
+    if cc is None:
+        return None
+    return {
+        "record_time":        cc.record_time,
+        "sample_rate":        cc.sample_rate,
+        "trigger_level_geo":  cc.trigger_level_geo,
+        "alarm_level_geo":    cc.alarm_level_geo,
+        "max_range_geo":      cc.max_range_geo,
+        "setup_name":         cc.setup_name,
+        "project":            cc.project,
+        "client":             cc.client,
+        "operator":           cc.operator,
+        "sensor_location":    cc.sensor_location,
+        "notes":              cc.notes,
+    }
+
+
 def _serialise_device_info(info: DeviceInfo) -> dict:
     return {
-        "serial":           info.serial,
-        "firmware_version": info.firmware_version,
-        "firmware_minor":   info.firmware_minor,
-        "dsp_version":      info.dsp_version,
-        "manufacturer":     info.manufacturer,
-        "model":            info.model,
+        "serial":             info.serial,
+        "firmware_version":   info.firmware_version,
+        "firmware_minor":     info.firmware_minor,
+        "dsp_version":        info.dsp_version,
+        "manufacturer":       info.manufacturer,
+        "model":              info.model,
+        "compliance_config":  _serialise_compliance_config(info.compliance_config),
     }