Add Network tab to settings — shows all connected hosts

Logs every outgoing connection (API requests and image downloads)
with timestamps. Network tab in Settings shows all hosts contacted
this session with request counts. No telemetry, just transparency.

booru_viewer/core/api/base.py

@@ -9,6 +9,7 @@ from dataclasses import dataclass, field
 import httpx
 
 from ..config import USER_AGENT, DEFAULT_PAGE_SIZE
+from ..cache import log_connection
 
 log = logging.getLogger("booru")
 
@@ -53,9 +54,14 @@ class BooruClient(ABC):
                 headers={"User-Agent": USER_AGENT},
                 follow_redirects=True,
                 timeout=20.0,
+                event_hooks={"request": [self._log_request]},
             )
         return self._client
 
+    @staticmethod
+    async def _log_request(request: httpx.Request) -> None:
+        log_connection(str(request.url))
+
     async def close(self) -> None:
         if self._client and not self._client.is_closed:
             await self._client.aclose()

booru_viewer/core/cache.py

@@ -4,13 +4,32 @@ from __future__ import annotations
 
 import hashlib
 import zipfile
+from collections import OrderedDict
+from datetime import datetime
 from pathlib import Path
+from urllib.parse import urlparse
 
 import httpx
 from PIL import Image
 
 from .config import cache_dir, thumbnails_dir, USER_AGENT
 
+# Track all outgoing connections: {host: [timestamp, ...]}
+_connection_log: OrderedDict[str, list[str]] = OrderedDict()
+
+
+def log_connection(url: str) -> None:
+    host = urlparse(url).netloc
+    if host not in _connection_log:
+        _connection_log[host] = []
+    _connection_log[host].append(datetime.now().strftime("%H:%M:%S"))
+    # Keep last 50 entries per host
+    _connection_log[host] = _connection_log[host][-50:]
+
+
+def get_connection_log() -> dict[str, list[str]]:
+    return dict(_connection_log)
+
 
 def _url_hash(url: str) -> str:
     return hashlib.sha256(url.encode()).hexdigest()[:16]
@@ -110,7 +129,6 @@ async def download_image(
             local.unlink()  # Remove corrupt cache entry
 
     # Extract referer from URL domain (needed for Gelbooru CDN etc.)
-    from urllib.parse import urlparse
     parsed = urlparse(url)
     # Map CDN hostnames back to the main site
     referer_host = parsed.netloc
@@ -120,6 +138,8 @@ async def download_image(
         referer_host = "danbooru.donmai.us"
     referer = f"{parsed.scheme}://{referer_host}/"
 
+    log_connection(url)
+
     own_client = client is None
     if own_client:
         client = httpx.AsyncClient(

booru_viewer/gui/settings.py

@@ -53,6 +53,7 @@ class SettingsDialog(QDialog):
         self._tabs.addTab(self._build_blacklist_tab(), "Blacklist")
         self._tabs.addTab(self._build_paths_tab(), "Paths")
         self._tabs.addTab(self._build_theme_tab(), "Theme")
+        self._tabs.addTab(self._build_network_tab(), "Network")
 
         # Bottom buttons
         btns = QHBoxLayout()
@@ -338,6 +339,39 @@ class SettingsDialog(QDialog):
         layout.addStretch()
         return w
 
+    # -- Network tab --
+
+    def _build_network_tab(self) -> QWidget:
+        from ..core.cache import get_connection_log
+        w = QWidget()
+        layout = QVBoxLayout(w)
+
+        layout.addWidget(QLabel(
+            "All hosts contacted this session. booru-viewer only connects\n"
+            "to the booru sites you configure — no telemetry or analytics."
+        ))
+
+        self._net_list = QListWidget()
+        self._net_list.setAlternatingRowColors(True)
+        layout.addWidget(self._net_list)
+
+        refresh_btn = QPushButton("Refresh")
+        refresh_btn.clicked.connect(self._refresh_network)
+        layout.addWidget(refresh_btn)
+
+        self._refresh_network()
+        return w
+
+    def _refresh_network(self) -> None:
+        from ..core.cache import get_connection_log
+        self._net_list.clear()
+        log = get_connection_log()
+        if not log:
+            self._net_list.addItem("No connections made yet")
+            return
+        for host, times in log.items():
+            self._net_list.addItem(f"{host}  ({len(times)} requests, last: {times[-1]})")
+
     def _edit_custom_css(self) -> None:
         from PySide6.QtGui import QDesktopServices
         from PySide6.QtCore import QUrl