fix: enrich activity log entries with item titles and collection info (#1)

The activity list endpoint returned raw entries without item context,
causing the activity page to show bare "Created"/"Updated" verbs.
The dashboard already enriched entries via GetItem() lookups — now the
activity handler does the same, and the frontend reads top-level fields
with metadata fallback.

internal/models/activity.go

@@ -16,6 +16,11 @@ type Activity struct {
 	Source      string    `json:"source"`
 	Metadata    string    `json:"metadata,omitempty"` // JSON
 	CreatedAt   time.Time `json:"created_at"`
+
+	// Enrichment fields — populated by handlers, not stored in DB
+	ItemTitle      string `json:"item_title,omitempty"`
+	ItemSlug       string `json:"item_slug,omitempty"`
+	CollectionSlug string `json:"collection_slug,omitempty"`
 }
 
 type ActivityListParams struct {

internal/server/handlers_activity.go

@@ -39,6 +39,9 @@ func (s *Server) handleListWorkspaceActivity(w http.ResponseWriter, r *http.Requ
 		activities = []models.Activity{}
 	}
 
+	// Enrich activities with item titles and collection info
+	s.enrichActivities(activities)
+
 	writeJSON(w, http.StatusOK, activities)
 }
 
@@ -73,5 +76,25 @@ func (s *Server) handleListDocumentActivity(w http.ResponseWriter, r *http.Reque
 		activities = []models.Activity{}
 	}
 
+	// Enrich activities with item titles and collection info
+	s.enrichActivities(activities)
+
 	writeJSON(w, http.StatusOK, activities)
 }
+
+// enrichActivities populates ItemTitle, ItemSlug, and CollectionSlug
+// on each activity by looking up the referenced item.
+func (s *Server) enrichActivities(activities []models.Activity) {
+	for i := range activities {
+		if activities[i].DocumentID == "" {
+			continue
+		}
+		item, err := s.store.GetItem(activities[i].DocumentID)
+		if err != nil || item == nil {
+			continue
+		}
+		activities[i].ItemTitle = item.Title
+		activities[i].ItemSlug = item.Slug
+		activities[i].CollectionSlug = item.CollectionSlug
+	}
+}

web/src/lib/types/index.ts

@@ -238,6 +238,9 @@ export interface Activity {
 	source: string;
 	metadata: string;
 	created_at: string;
+	item_title?: string;
+	item_slug?: string;
+	collection_slug?: string;
 }
 
 // ─── Dashboard ───────────────────────────────────────────────────────────────

web/src/routes/[workspace]/activity/+page.svelte

@@ -88,10 +88,11 @@
 		}
 	}
 
-	// Client-side collection filter (metadata contains item_collection info)
+	// Client-side collection filter using enriched top-level field or metadata fallback
 	let filteredActivities = $derived.by(() => {
 		if (!filterCollection) return activities;
 		return activities.filter((a) => {
+			if (a.collection_slug) return a.collection_slug === filterCollection;
 			try {
 				const meta = JSON.parse(a.metadata);
 				return meta.collection_slug === filterCollection || meta.collection === filterCollection;
@@ -299,6 +300,9 @@
 					<div class="date-entries">
 						{#each group.items as activity (activity.id)}
 							{@const meta = parseMeta(activity.metadata)}
+							{@const itemTitle = activity.item_title || meta.item_title || meta.title}
+							{@const itemSlug = activity.item_slug || meta.item_slug}
+							{@const collSlug = activity.collection_slug || meta.collection_slug}
 							{@const src = getSourceLabel(activity.source, activity.actor)}
 							<div class="entry {borderClass(activity.source, activity.actor)}">
 								<span
@@ -310,18 +314,16 @@
 								<div class="entry-content">
 									<div class="entry-main">
 										<span class="entry-verb">{activityVerb(activity.action)}</span>
-										{#if meta.item_title && meta.item_slug && meta.collection_slug}
+										{#if itemTitle && itemSlug && collSlug}
 											<a
-												href="/{wsSlug}/{meta.collection_slug}/{meta.item_slug}"
-												class="entry-item-link">{meta.item_title}</a
+												href="/{wsSlug}/{collSlug}/{itemSlug}"
+												class="entry-item-link">{itemTitle}</a
 											>
-										{:else if meta.item_title}
-											<span class="entry-item-name">{meta.item_title}</span>
-										{:else if meta.title}
-											<span class="entry-item-name">{meta.title}</span>
+										{:else if itemTitle}
+											<span class="entry-item-name">{itemTitle}</span>
 										{/if}
-										{#if meta.collection_slug}
-											<span class="entry-collection">{meta.collection_slug}</span>
+										{#if collSlug}
+											<span class="entry-collection">{collSlug}</span>
 										{/if}
 									</div>
 									{#if meta.changes}