Notices and status bar improvements (#24459)

* Notice and status bar improvements

Status bar problems added in the same pass got the same `Date.now()` id and overwrote each other, so usually only one showed. Messages now fall back to their text as the id. The desktop status bar shows the most severe message with a count of the rest that opens a popover listing all of them, and the mobile drawer stacks them vertically instead of placing them side by side.

Dismissing a notice hid it for good, so a detector that restarted again after a dismissal was never shown. Dismiss is replaced by acknowledge, which hides a notice until it happens again, and mute, which hides it permanently. Kinds that never repeat (config and stream checks, the update notice) can only be muted. `reopen_at_count` is removed since acknowledge covers the failed login case.

* move camera CPU warnings to notices

High ffmpeg and detect CPU warnings sat in the status bar with no way to dismiss them. They're now `ffmpeg_high_cpu` and `detect_high_cpu` notices, raised per episode by the same tracker as skipped detections. Also stop failed login attempts held from before an acknowledgement from reopening the notice.

* fix mypy and handle missing cpu stats in notices

web/public/locales/en/views/system.json

@@ -19,20 +19,26 @@
     "notices": {
       "title": "Notices",
       "empty": "Your Frigate installation is healthy",
-      "dismiss": "Dismiss",
+      "acknowledge": "Acknowledge",
+      "acknowledgeHint": "Hide until this happens again",
+      "mute": "Mute",
+      "muteHint": "Never show this again",
+      "unmute": "Unmute",
+      "showAgain": "Show again",
       "openSettings": "Open settings",
       "openLink": "Open link",
       "noMatches": "No notices match the filter",
-      "dismissedTitle": "Dismissed",
-      "noneDismissed": "No dismissed notices",
-      "clearDismissed": "Clear dismissed",
-      "clearDismissedTitle": "Clear dismissed notices?",
-      "clearDismissedDesc": "Every dismissed notice is deleted. Config and stream checks show again right away, and other notices return the next time they happen.",
+      "hiddenTitle": "Hidden",
+      "noneHidden": "No hidden notices",
+      "showAll": "Show all again",
+      "showAllTitle": "Show all hidden notices?",
+      "showAllDesc": "Every acknowledged and muted notice returns to the Notices list, including config and stream checks.",
       "firstSeen_one": "First seen {{time}}",
       "firstSeen_other": "First seen {{time}} · {{count}} times",
-      "dismissedAt": "Dismissed {{time}}",
+      "acknowledgedAt": "Acknowledged {{time}}",
+      "mutedAt": "Muted {{time}}",
       "filter": {
-        "showDismissed": "Show dismissed",
+        "showHidden": "Show hidden",
         "severity": "Severity",
         "error": "Error",
         "warning": "Warning",
@@ -42,6 +48,8 @@
         "detector_stuck": "Detector {{detector}} was restarted after it stopped responding",
         "model_download_failed": "Downloading {{file}} for {{model}} failed: {{error}}",
         "skipped_detections": "Detection could not keep up and skipped {{pct}}% of frames for over a minute",
+        "ffmpeg_high_cpu": "FFmpeg CPU usage is high ({{cpu}}% average)",
+        "detect_high_cpu": "Detection CPU usage is high ({{cpu}}% average)",
         "shm_too_low": "/dev/shm allocation ({{total}} MB) should be increased to at least {{min}} MB",
         "failed_login_one": "Failed login attempt for {{user}}",
         "failed_login_other": "Failed login attempts for {{user}}",
@@ -324,12 +332,12 @@
   },
   "lastRefreshed": "Last refreshed: ",
   "stats": {
-    "ffmpegHighCpuUsage": "{{camera}} has high FFmpeg CPU usage ({{ffmpegAvg}}%)",
     "cameraSkippedDetections": "{{camera}} is skipping detection on {{pct}}% of frames",
-    "detectHighCpuUsage": "{{camera}} has high detect CPU usage ({{detectAvg}}%)",
     "healthy": "System is healthy",
     "systemNotices_one": "{{count}} system notice",
     "systemNotices_other": "{{count}} system notices",
+    "moreMessages_one": "+{{count}}",
+    "moreMessages_other": "+{{count}}",
     "reindexingEmbeddings": "Reindexing embeddings ({{processed}}% complete)",
     "cameraIsOffline": "{{camera}} is offline",
     "detectIsSlow": "{{detect}} is slow ({{speed}} ms)",