true bucket sharing handling

src/store/index.ts

@@ -648,8 +648,22 @@ export const matchesFilter = (task: Task) => {
         ) || bucketRefs.some(context => context.id === (ctx as { bucketId: string }).bucketId);
         if (!inCurrentBucket) return false;
     } else {
-        if (hasHandoffBucket) return false;
+        const targetUserId = (ctx as { userId: string }).userId;
-        if (task.ownerId !== (ctx as { userId: string }).userId) return false;
+        const targetPersonalContext = getPersonalContext(targetUserId);
+        const inTargetPersonalContext = !!targetPersonalContext && task.shareRefs.some(ref =>
+            ref.kind === "user" &&
+            (
+                ref.contextId === targetPersonalContext.id ||
+                ref.key === targetPersonalContext.key ||
+                normalizeContextKey(targetPersonalContext.displayName) === ref.key
+            )
+        );
+
+        if (targetPersonalContext) {
+            if (!inTargetPersonalContext) return false;
+        } else if (task.ownerId !== targetUserId) {
+            return false;
+        }
     }
 
     if (isPersonalView && inAnyBucket && !inPinnedBucket && task.ownerId !== currentUserId) return false;
@@ -2050,20 +2064,24 @@ const checkForHandoffs = (task: Task, updates: Partial<Task>): Partial<Task> =>
     if (!currentUserId || task.ownerId !== currentUserId) return updates;
 
     const refs = updates.shareRefs || task.shareRefs;
+    const senderPersonalContext = getPersonalContext(currentUserId);
+    const stripSenderPersonalContext = (inputRefs: TaskShareRef[]) =>
+        senderPersonalContext
+            ? inputRefs.filter(existingRef => !(
+                existingRef.kind === "user" &&
+                (existingRef.contextId === senderPersonalContext.id || existingRef.key === senderPersonalContext.key)
+            ))
+            : inputRefs;
+
     for (const ref of refs) {
         const context = getContextByRef(ref);
         if (!context || context.policy !== "handoff") continue;
+        const nextShareRefs = stripSenderPersonalContext(refs);
+        const labelTags = updates.labelTags || task.labelTags;
+        const noteRefs = updates.noteRefs || task.noteRefs;
+        const favoriteTag = (updates.tags || task.tags || []).find(tag => tag.endsWith("_favorite__"));
+
         if (context.kind === "user" && context.targetUserId) {
-            const senderPersonalContext = getPersonalContext(currentUserId);
-            const nextShareRefs = senderPersonalContext
-                ? refs.filter(existingRef => !(
-                    existingRef.kind === "user" &&
-                    (existingRef.contextId === senderPersonalContext.id || existingRef.key === senderPersonalContext.key)
-                ))
-                : refs;
-            const labelTags = updates.labelTags || task.labelTags;
-            const noteRefs = updates.noteRefs || task.noteRefs;
-            const favoriteTag = (updates.tags || task.tags || []).find(tag => tag.endsWith("_favorite__"));
             return {
                 ...updates,
                 ownerId: context.targetUserId,
@@ -2071,6 +2089,14 @@ const checkForHandoffs = (task: Task, updates: Partial<Task>): Partial<Task> =>
                 tags: buildTaskTags(labelTags, nextShareRefs, noteRefs, favoriteTag)
             };
         }
+
+        if (context.kind === "bucket") {
+            return {
+                ...updates,
+                shareRefs: nextShareRefs,
+                tags: buildTaskTags(labelTags, nextShareRefs, noteRefs, favoriteTag)
+            };
+        }
     }
 
     return updates;
@@ -2689,8 +2715,12 @@ export const loadTasksForOwner = async (userId: string) => {
     if (!pb.authStore.isValid || !userId) return;
 
     try {
+        const targetPersonalContext = getPersonalContext(userId);
+        const filter = targetPersonalContext
+            ? `tags ~ "${buildShareTag(targetPersonalContext.displayName)}"`
+            : relationFilter("user", userId);
         const records = await pb.collection(TASGRID_COLLECTION).getFullList({
-            filter: relationFilter("user", userId),
+            filter,
             sort: '-created',
             fields: LIST_FIELDS,
             requestKey: `owner-context-${userId}`