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/gps.py

@@ -507,7 +507,7 @@ def get_current_position() -> GPSPosition | None:
 # GPS device detection and gpsd auto-start
 # ============================================
 
-_gpsd_process: 'subprocess.Popen | None' = None
+_gpsd_process: subprocess.Popen | None = None
 _gpsd_process_lock = threading.RLock()
 
 
@@ -672,10 +672,8 @@ def stop_gpsd_daemon() -> None:
                 _gpsd_process.terminate()
                 _gpsd_process.wait(timeout=3.0)
             except Exception:
-                try:
+                with contextlib.suppress(Exception):
                     _gpsd_process.kill()
-                except Exception:
-                    pass
             logger.info("Stopped gpsd daemon")
             print("[GPS] Stopped gpsd daemon", flush=True)
         _gpsd_process = None