fix: simplify eventManager and restore working event fetching

- Revert eventManager to simpler role: initialization and service coordination
- Restore original working fetching logic in useEventLoader
- eventManager now provides: getCachedEvent, getEventLoader, setServices
- Fixes broken bookmark hydration and direct event loading
- Uses eventManager for cache checking but direct subscription for fetching

src/hooks/useEventLoader.ts

@@ -55,18 +55,40 @@ export function useEventLoader({
   useEffect(() => {
     if (!eventId) return
 
+    // Try to get from event store first (check cache synchronously)
+    const cachedEvent = eventManager.getCachedEvent(eventId)
+    if (cachedEvent) {
+      displayEvent(cachedEvent)
+      setReaderLoading(false)
+      setIsCollapsed(false)
+      setSelectedUrl('')
+      return
+    }
+
+    // Event not in cache, set loading state and fetch from relays
     setReaderLoading(true)
     setReaderContent(undefined)
     setSelectedUrl('') // Don't set nostr: URL to avoid showing highlights
     setIsCollapsed(false)
 
-    // Fetch event using the event manager
-    eventManager.fetchEvent(eventId).then(
-      (event) => {
+    // If no relay pool yet, wait for it (will re-run when relayPool changes)
+    if (!relayPool) {
+      return
+    }
+
+    // Fetch from relays using event manager's loader
+    const eventLoader = eventManager.getEventLoader()
+    if (!eventLoader) {
+      setReaderLoading(false)
+      return
+    }
+
+    const subscription = eventLoader({ id: eventId }).subscribe({
+      next: (event) => {
         displayEvent(event)
         setReaderLoading(false)
       },
-      (err) => {
+      error: (err) => {
         const errorContent: ReadableContent = {
           url: '',
           html: `<div style="padding: 1rem; color: var(--color-error, red);">Failed to load event: ${err instanceof Error ? err.message : 'Unknown error'}</div>`,
@@ -75,6 +97,8 @@ export function useEventLoader({
         setReaderContent(errorContent)
         setReaderLoading(false)
       }
-    )
-  }, [eventId, displayEvent, setReaderLoading, setSelectedUrl, setIsCollapsed, setReaderContent])
+    })
+
+    return () => subscription.unsubscribe()
+  }, [eventId, relayPool, displayEvent, setReaderLoading, setSelectedUrl, setIsCollapsed, setReaderContent])
 }