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>

routes/audio_websocket.py

@@ -6,6 +6,7 @@ import socket
 import subprocess
 import threading
 import time
+
 from flask import Flask
 
 # Try to import flask-sock
@@ -16,6 +17,8 @@ except ImportError:
     WEBSOCKET_AVAILABLE = False
     Sock = None
 
+import contextlib
+
 from utils.logging import get_logger
 
 logger = get_logger('intercept.audio_ws')
@@ -56,10 +59,8 @@ def kill_audio_processes():
             audio_process.terminate()
             audio_process.wait(timeout=0.5)
         except:
-            try:
+            with contextlib.suppress(BaseException):
                 audio_process.kill()
-            except:
-                pass
         audio_process = None
 
     if rtl_process:
@@ -67,10 +68,8 @@ def kill_audio_processes():
             rtl_process.terminate()
             rtl_process.wait(timeout=0.5)
         except:
-            try:
+            with contextlib.suppress(BaseException):
                 rtl_process.kill()
-            except:
-                pass
         rtl_process = None
 
     time.sleep(0.3)
@@ -261,16 +260,10 @@ def init_audio_websocket(app: Flask):
             # Complete WebSocket close handshake, then shut down the
             # raw socket so Werkzeug cannot write its HTTP 200 response
             # on top of the WebSocket stream.
-            try:
+            with contextlib.suppress(Exception):
                 ws.close()
-            except Exception:
-                pass
-            try:
+            with contextlib.suppress(Exception):
                 ws.sock.shutdown(socket.SHUT_RDWR)
-            except Exception:
-                pass
-            try:
+            with contextlib.suppress(Exception):
                 ws.sock.close()
-            except Exception:
-                pass
             logger.info("WebSocket audio client disconnected")