v2.26.0: fix SSE fanout crash and branded logo FOUC

- Fix SSE fanout thread AttributeError when source queue is None during
  interpreter shutdown by snapshotting to local variable with null guard
- Fix branded "i" logo rendering oversized on first page load (FOUC) by
  adding inline width/height to SVG elements across 10 templates
- Bump version to 2.26.0 in config.py, pyproject.toml, and CHANGELOG.md

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

utils/bluetooth/__init__.py

@@ -8,40 +8,40 @@ device aggregation, RSSI statistics, and observable heuristics.
 from .aggregator import DeviceAggregator
 from .capability_check import check_capabilities, quick_adapter_check
 from .constants import (
-    # Range bands (legacy)
-    RANGE_VERY_CLOSE,
-    RANGE_CLOSE,
-    RANGE_NEARBY,
-    RANGE_FAR,
-    RANGE_UNKNOWN,
-    # Proximity bands (new)
-    PROXIMITY_IMMEDIATE,
-    PROXIMITY_NEAR,
-    PROXIMITY_FAR,
-    PROXIMITY_UNKNOWN,
-    # Protocols
-    PROTOCOL_BLE,
-    PROTOCOL_CLASSIC,
-    PROTOCOL_AUTO,
+    ADDRESS_TYPE_NRPA,
     # Address types
     ADDRESS_TYPE_PUBLIC,
     ADDRESS_TYPE_RANDOM,
     ADDRESS_TYPE_RANDOM_STATIC,
     ADDRESS_TYPE_RPA,
-    ADDRESS_TYPE_NRPA,
+    PROTOCOL_AUTO,
+    # Protocols
+    PROTOCOL_BLE,
+    PROTOCOL_CLASSIC,
+    PROXIMITY_FAR,
+    # Proximity bands (new)
+    PROXIMITY_IMMEDIATE,
+    PROXIMITY_NEAR,
+    PROXIMITY_UNKNOWN,
+    RANGE_CLOSE,
+    RANGE_FAR,
+    RANGE_NEARBY,
+    RANGE_UNKNOWN,
+    # Range bands (legacy)
+    RANGE_VERY_CLOSE,
 )
-from .device_key import generate_device_key, is_randomized_mac, extract_key_type
+from .device_key import extract_key_type, generate_device_key, is_randomized_mac
 from .distance import DistanceEstimator, ProximityBand, get_distance_estimator
-from .heuristics import HeuristicsEngine, evaluate_device_heuristics, evaluate_all_devices
+from .heuristics import HeuristicsEngine, evaluate_all_devices, evaluate_device_heuristics
 from .models import BTDeviceAggregate, BTObservation, ScanStatus, SystemCapabilities
 from .ring_buffer import RingBuffer, get_ring_buffer, reset_ring_buffer
 from .scanner import BluetoothScanner, get_bluetooth_scanner, reset_bluetooth_scanner
 from .tracker_signatures import (
-    TrackerSignatureEngine,
-    TrackerDetectionResult,
-    TrackerType,
-    TrackerConfidence,
     DeviceFingerprint,
+    TrackerConfidence,
+    TrackerDetectionResult,
+    TrackerSignatureEngine,
+    TrackerType,
     detect_tracker,
     get_tracker_engine,
 )