fix: improve content filtering for unknown types

- Unknown content types (systems, news-scrapper) treated as text
- Filter "text" now includes news and unknown types
- Add KNOWN_CONTENT_TYPES set for type detection

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

src/components/Filters/ContentFilters.jsx

@@ -28,6 +28,21 @@ export default function ContentFilters({ activeFilter, onFilterChange }) {
   );
 }
 
+// Known content types - anything not in this list is treated as text
+const KNOWN_CONTENT_TYPES = new Set([
+  "photo", "picture", "image",
+  "video",
+  "camera", "live", "stream",
+  "post", "text", "blog",
+  "news",
+  "event",
+  "weather", "traffic"
+]);
+
+function isUnknownType(ct) {
+  return ct && !KNOWN_CONTENT_TYPES.has(ct);
+}
+
 // Export filter matching function for reuse
 export function matchesContentFilter(post, filter) {
   if (!filter || filter === "all") return true;
@@ -38,14 +53,16 @@ export function matchesContentFilter(post, filter) {
 
   switch (filter) {
     case "links":
-      return cat === "news" || ct === "news";
+      // News links + unknown types with news category (e.g., systems, news-scrapper)
+      return cat === "news" || ct === "news" || (isUnknownType(ct) && cat === "news");
     case "video":
       // Recorded videos only
       return ct === "video";
     case "image":
       return hasImage && !hasVideo && ct !== "camera" && ct !== "video";
     case "text":
-      return ct === "post" || ct === "text" || ct === "blog" || cat === "friends";
+      // Text posts + news + unknown types default to text (systems, news-scrapper, etc.)
+      return ct === "post" || ct === "text" || ct === "blog" || ct === "news" || cat === "friends" || cat === "news" || isUnknownType(ct);
     case "live":
       // Only live content: cameras (quebec511), live streams - NOT recorded videos
       return ct === "live" || ct === "stream" || ct === "camera";