feat: add tabbed dashboard with My Flows/My Team/Public/All views and fork UI

- Tabs filter by visibility scope; My Team hidden for solo users
- Data reloads on tab change and window focus (fixes stale-after-editor bug)
- Create button moves into My Flows tab header
- Fork button on flows not owned by current user; opens reason modal
- Author attribution shown on cards from other users

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

frontend/src/pages/MyTreesPage.tsx

@@ -1,9 +1,9 @@
-import { useEffect, useState } from 'react'
+import { useCallback, useEffect, useState } from 'react'
 import { useNavigate, Link } from 'react-router-dom'
 import { Play, Pencil, Share2, Trash2, GitBranch, Clock, TrendingUp, FolderTree, Plus, ListOrdered, ChevronDown, Wrench, Sparkles } from 'lucide-react'
 import { treesApi } from '@/api/trees'
 import { sessionsApi } from '@/api/sessions'
-import type { TreeListItem } from '@/types'
+import type { TreeListItem, TreeFilters } from '@/types'
 import { TagBadges } from '@/components/common/TagBadges'
 import { ConfirmDialog } from '@/components/common/ConfirmDialog'
 import { ShareTreeModal } from '@/components/library/ShareTreeModal'
@@ -22,6 +22,8 @@ interface TreeWithStats extends TreeListItem {
   parent_tree_name?: string | null
 }
 
+type Tab = 'mine' | 'team' | 'public' | 'all'
+
 export function MyTreesPage() {
   const navigate = useNavigate()
   const { user } = useAuthStore()
@@ -36,23 +38,26 @@ export function MyTreesPage() {
   const [showCreateMenu, setShowCreateMenu] = useState(false)
   const [showAIBuilder, setShowAIBuilder] = useState(false)
   const [aiEnabled, setAiEnabled] = useState(false)
+  const [activeTab, setActiveTab] = useState<Tab>('mine')
+  const [forkTarget, setForkTarget] = useState<TreeWithStats | null>(null)
+  const [forkReason, setForkReason] = useState('')
+  const [isForking, setIsForking] = useState(false)
 
-  useEffect(() => {
+  const loadTrees = useCallback(async () => {
-    loadMyTrees()
-  }, [user?.id])
-
-  useEffect(() => {
-    aiBuilderApi.getQuota().then((q) => setAiEnabled(q.ai_enabled)).catch(() => {})
-  }, [])
-
-  const loadMyTrees = async () => {
     if (!user?.id) return
     setIsLoading(true)
     try {
-      // Fetch trees and recent sessions in parallel (2 API calls total, not N+1)
+      const params: TreeFilters = {
+        sort_by: activeTab === 'public' ? 'usage_count' : 'updated_at',
+      }
+      if (activeTab === 'mine') params.author_id = user.id
+      if (activeTab === 'team') params.visibility = 'team'
+      if (activeTab === 'public') params.visibility = 'public'
+      // 'all' tab: no author/visibility filter
+
       const [userTrees, recentSessions] = await Promise.all([
-        treesApi.list({ author_id: user.id }),
+        treesApi.list(params),
-        sessionsApi.list({ size: 100 }),
+        activeTab === 'mine' ? sessionsApi.list({ size: 100 }) : Promise.resolve([]),
       ])
 
       // Build a map of tree_id -> most recent session start time
@@ -72,12 +77,34 @@ export function MyTreesPage() {
 
       setTrees(treesWithStats)
     } catch (err) {
-      toast.error('Failed to load your flows')
+      toast.error('Failed to load flows')
       console.error(err)
     } finally {
       setIsLoading(false)
     }
-  }
+  }, [activeTab, user?.id])
+
+  useEffect(() => {
+    loadTrees()
+  }, [loadTrees])
+
+  useEffect(() => {
+    const onFocus = () => loadTrees()
+    window.addEventListener('focus', onFocus)
+    return () => window.removeEventListener('focus', onFocus)
+  }, [loadTrees])
+
+  useEffect(() => {
+    aiBuilderApi.getQuota().then((q) => setAiEnabled(q.ai_enabled)).catch(() => {})
+  }, [])
+
+  const hasTeam = Boolean(user?.account_id)
+  const tabs: { id: Tab; label: string }[] = [
+    { id: 'mine', label: 'My Flows' },
+    ...(hasTeam ? [{ id: 'team' as Tab, label: 'My Team' }] : []),
+    { id: 'public', label: 'Public' },
+    { id: 'all', label: 'All' },
+  ]
 
   const handleStartSession = (tree: TreeWithStats) => {
     if (tree.tree_type === 'maintenance') {
@@ -111,6 +138,24 @@ export function MyTreesPage() {
     }
   }
 
+  const handleFork = async () => {
+    if (!forkTarget) return
+    setIsForking(true)
+    try {
+      const forked = await treesApi.fork(forkTarget.id, {
+        fork_reason: forkReason.trim() || undefined,
+      })
+      toast.success(`"${forked.name}" added to your flows`)
+      setForkTarget(null)
+      setForkReason('')
+      setActiveTab('mine')
+    } catch {
+      toast.error('Failed to fork flow')
+    } finally {
+      setIsForking(false)
+    }
+  }
+
   const formatDate = (dateString?: string) => {
     if (!dateString) return 'Never'
     return new Date(dateString).toLocaleDateString('en-US', {
@@ -122,82 +167,105 @@ export function MyTreesPage() {
 
   return (
     <div className="container mx-auto px-4 py-6 sm:px-6 sm:py-8">
-      <div className="mb-6 flex items-center justify-between sm:mb-8">
+      <div className="mb-4 flex items-center justify-between sm:mb-6">
         <div>
           <h1 className="text-2xl font-bold font-heading text-foreground sm:text-3xl">My Flows</h1>
           <p className="mt-2 text-muted-foreground">
             Your forked and custom flows
           </p>
         </div>
-        {canCreateTrees && (
+      </div>
-          <div className="relative">
+
-            <button
+      {/* Tab bar */}
-              onClick={() => setShowCreateMenu(!showCreateMenu)}
+      <div className="flex items-center gap-1 border-b border-border mb-4">
-              className="flex items-center gap-2 rounded-md bg-gradient-brand text-white shadow-lg shadow-primary/20 px-4 py-2 text-sm font-medium hover:opacity-90"
+        {tabs.map((tab) => (
-            >
+          <button
-              <Plus className="h-4 w-4" />
+            key={tab.id}
-              Create New
+            type="button"
-              <ChevronDown className="h-3.5 w-3.5" />
+            onClick={() => setActiveTab(tab.id)}
-            </button>
+            className={cn(
-            {showCreateMenu && (
+              'px-4 py-2.5 text-sm font-medium transition-colors border-b-2 -mb-px',
-              <>
+              activeTab === tab.id
-                <div className="fixed inset-0 z-10" onClick={() => setShowCreateMenu(false)} />
+                ? 'border-primary text-foreground'
-                <div className="absolute right-0 z-20 mt-1 w-56 rounded-lg border border-border bg-card p-1 shadow-xl backdrop-blur-sm">
+                : 'border-transparent text-muted-foreground hover:text-foreground'
-                  <Link
-                    to="/trees/new"
-                    onClick={() => setShowCreateMenu(false)}
-                    className="flex items-center gap-3 rounded-md px-3 py-2.5 text-sm text-foreground hover:bg-accent"
-                  >
-                    <FolderTree className="h-4 w-4 text-muted-foreground" />
-                    <div>
-                      <div className="font-medium">Troubleshooting Tree</div>
-                      <div className="text-xs text-muted-foreground">Branching decision flow</div>
-                    </div>
-                  </Link>
-                  <Link
-                    to="/flows/new"
-                    onClick={() => setShowCreateMenu(false)}
-                    className="flex items-center gap-3 rounded-md px-3 py-2.5 text-sm text-foreground hover:bg-accent"
-                  >
-                    <ListOrdered className="h-4 w-4 text-muted-foreground" />
-                    <div>
-                      <div className="font-medium">Procedural Flow</div>
-                      <div className="text-xs text-muted-foreground">Step-by-step procedure</div>
-                    </div>
-                  </Link>
-                  <Link
-                    to="/flows/new?type=maintenance"
-                    onClick={() => setShowCreateMenu(false)}
-                    className="flex items-center gap-3 rounded-md px-3 py-2.5 text-sm text-foreground hover:bg-accent"
-                  >
-                    <Wrench className="h-4 w-4 text-amber-400" />
-                    <div>
-                      <div className="font-medium">Maintenance Flow</div>
-                      <div className="text-xs text-muted-foreground">Scheduled multi-target tasks</div>
-                    </div>
-                  </Link>
-                  {aiEnabled && (
-                    <>
-                      <div className="my-1 border-t border-border" />
-                      <button
-                        type="button"
-                        onClick={() => {
-                          setShowCreateMenu(false)
-                          setShowAIBuilder(true)
-                        }}
-                        className="flex w-full items-center gap-3 rounded-md px-3 py-2.5 text-sm text-foreground hover:bg-accent"
-                      >
-                        <Sparkles className="h-4 w-4 text-primary" />
-                        <div className="text-left">
-                          <div className="font-medium">Build with AI</div>
-                          <div className="text-xs text-muted-foreground">AI-assisted flow creation</div>
-                        </div>
-                      </button>
-                    </>
-                  )}
-                </div>
-              </>
             )}
+          >
+            {tab.label}
+          </button>
+        ))}
+
+        {/* Create button — only on My Flows tab */}
+        {activeTab === 'mine' && canCreateTrees && (
+          <div className="ml-auto pb-1.5">
+            <div className="relative">
+              <button
+                onClick={() => setShowCreateMenu(!showCreateMenu)}
+                className="flex items-center gap-2 rounded-md bg-gradient-brand text-white shadow-lg shadow-primary/20 px-4 py-2 text-sm font-medium hover:opacity-90"
+              >
+                <Plus className="h-4 w-4" />
+                Create New
+                <ChevronDown className="h-3.5 w-3.5" />
+              </button>
+              {showCreateMenu && (
+                <>
+                  <div className="fixed inset-0 z-10" onClick={() => setShowCreateMenu(false)} />
+                  <div className="absolute right-0 z-20 mt-1 w-56 rounded-lg border border-border bg-card p-1 shadow-xl backdrop-blur-sm">
+                    <Link
+                      to="/trees/new"
+                      onClick={() => setShowCreateMenu(false)}
+                      className="flex items-center gap-3 rounded-md px-3 py-2.5 text-sm text-foreground hover:bg-accent"
+                    >
+                      <FolderTree className="h-4 w-4 text-muted-foreground" />
+                      <div>
+                        <div className="font-medium">Troubleshooting Tree</div>
+                        <div className="text-xs text-muted-foreground">Branching decision flow</div>
+                      </div>
+                    </Link>
+                    <Link
+                      to="/flows/new"
+                      onClick={() => setShowCreateMenu(false)}
+                      className="flex items-center gap-3 rounded-md px-3 py-2.5 text-sm text-foreground hover:bg-accent"
+                    >
+                      <ListOrdered className="h-4 w-4 text-muted-foreground" />
+                      <div>
+                        <div className="font-medium">Procedural Flow</div>
+                        <div className="text-xs text-muted-foreground">Step-by-step procedure</div>
+                      </div>
+                    </Link>
+                    <Link
+                      to="/flows/new?type=maintenance"
+                      onClick={() => setShowCreateMenu(false)}
+                      className="flex items-center gap-3 rounded-md px-3 py-2.5 text-sm text-foreground hover:bg-accent"
+                    >
+                      <Wrench className="h-4 w-4 text-amber-400" />
+                      <div>
+                        <div className="font-medium">Maintenance Flow</div>
+                        <div className="text-xs text-muted-foreground">Scheduled multi-target tasks</div>
+                      </div>
+                    </Link>
+                    {aiEnabled && (
+                      <>
+                        <div className="my-1 border-t border-border" />
+                        <button
+                          type="button"
+                          onClick={() => {
+                            setShowCreateMenu(false)
+                            setShowAIBuilder(true)
+                          }}
+                          className="flex w-full items-center gap-3 rounded-md px-3 py-2.5 text-sm text-foreground hover:bg-accent"
+                        >
+                          <Sparkles className="h-4 w-4 text-primary" />
+                          <div className="text-left">
+                            <div className="font-medium">Build with AI</div>
+                            <div className="text-xs text-muted-foreground">AI-assisted flow creation</div>
+                          </div>
+                        </button>
+                      </>
+                    )}
+                  </div>
+                </>
+              )}
+            </div>
           </div>
         )}
       </div>
@@ -210,33 +278,41 @@ export function MyTreesPage() {
       ) : trees.length === 0 ? (
         <div className="rounded-lg border border-dashed border-border bg-accent px-4 py-12 text-center">
           <FolderTree className="mx-auto mb-4 h-12 w-12 text-muted-foreground" />
-          <h2 className="mb-2 text-lg font-semibold text-foreground">No personal flows yet</h2>
+          <h2 className="mb-2 text-lg font-semibold text-foreground">No flows found</h2>
           <p className="mb-4 text-sm text-muted-foreground">
-            Fork a flow from the library to customize it for your workflow
+            {activeTab === 'mine'
+              ? 'Fork a flow from the library to customize it for your workflow'
+              : activeTab === 'team'
+              ? 'No team flows found'
+              : activeTab === 'public'
+              ? 'No public flows found'
+              : 'No flows found'}
           </p>
-          <div className="flex items-center justify-center gap-3">
+          {activeTab === 'mine' && (
-            <Link
+            <div className="flex items-center justify-center gap-3">
-              to="/trees"
-              className={cn(
-                'inline-flex items-center gap-2 rounded-md bg-gradient-brand text-white shadow-lg shadow-primary/20 px-4 py-2 text-sm font-medium',
-                'hover:opacity-90'
-              )}
-            >
-              Browse Library
-            </Link>
-            {canCreateTrees && (
               <Link
-                to="/trees/new"
+                to="/trees"
                 className={cn(
-                  'inline-flex items-center gap-2 rounded-md border border-border px-4 py-2 text-sm font-medium text-muted-foreground',
+                  'inline-flex items-center gap-2 rounded-md bg-gradient-brand text-white shadow-lg shadow-primary/20 px-4 py-2 text-sm font-medium',
-                  'hover:bg-accent hover:text-foreground'
+                  'hover:opacity-90'
                 )}
               >
-                <Plus className="h-4 w-4" />
+                Browse Library
-                Create from Scratch
               </Link>
-            )}
+              {canCreateTrees && (
-          </div>
+                <Link
+                  to="/trees/new"
+                  className={cn(
+                    'inline-flex items-center gap-2 rounded-md border border-border px-4 py-2 text-sm font-medium text-muted-foreground',
+                    'hover:bg-accent hover:text-foreground'
+                  )}
+                >
+                  <Plus className="h-4 w-4" />
+                  Create from Scratch
+                </Link>
+              )}
+            </div>
+          )}
         </div>
       ) : (
         <div className="grid gap-4 sm:grid-cols-2 lg:grid-cols-3">
@@ -254,7 +330,14 @@ export function MyTreesPage() {
                   {tree.tree_type === 'maintenance' && (
                     <Wrench className="h-4 w-4 shrink-0 text-amber-400" />
                   )}
-                  <h3 className="font-semibold text-foreground">{tree.name}</h3>
+                  <div>
+                    <h3 className="font-semibold text-foreground">{tree.name}</h3>
+                    {tree.author_id !== user?.id && tree.author_name && (
+                      <p className="text-[10px] font-label text-muted-foreground">
+                        by {tree.author_name}
+                      </p>
+                    )}
+                  </div>
                 </div>
                 <div className="flex items-center gap-1.5">
                   {tree.tree_type === 'procedural' && (
@@ -316,7 +399,7 @@ export function MyTreesPage() {
               </div>
 
               {/* Actions */}
-              <div className="flex items-center gap-2">
+              <div className="flex items-center gap-2 flex-wrap">
                 <button
                   type="button"
                   onClick={() => handleStartSession(tree)}
@@ -340,6 +423,16 @@ export function MyTreesPage() {
                     <Pencil className="h-4 w-4" />
                   </Link>
                 )}
+                {tree.author_id !== user?.id && (
+                  <button
+                    type="button"
+                    onClick={() => { setForkTarget(tree); setForkReason('') }}
+                    className="flex items-center gap-1.5 rounded-lg border border-border px-3 py-1.5 text-xs text-muted-foreground hover:bg-accent hover:text-foreground"
+                  >
+                    <GitBranch className="h-3.5 w-3.5" />
+                    Fork
+                  </button>
+                )}
                 <button
                   type="button"
                   onClick={() => {
@@ -406,6 +499,48 @@ export function MyTreesPage() {
         isOpen={showAIBuilder}
         onClose={() => setShowAIBuilder(false)}
       />
+
+      {/* Fork Confirmation Modal */}
+      {forkTarget && (
+        <div className="fixed inset-0 z-50 flex items-center justify-center bg-background/80 backdrop-blur-sm">
+          <div className="w-full max-w-sm rounded-xl border border-border bg-card p-5 shadow-xl">
+            <h3 className="mb-1 text-sm font-semibold text-foreground">Fork this flow?</h3>
+            <p className="mb-4 text-xs text-muted-foreground">
+              Creates a copy of &ldquo;{forkTarget.name}&rdquo; under your account that you can edit freely.
+            </p>
+            <label className="mb-1 block text-xs text-muted-foreground">
+              Why are you forking? <span className="opacity-60">(optional)</span>
+            </label>
+            <input
+              type="text"
+              value={forkReason}
+              onChange={(e) => setForkReason(e.target.value)}
+              placeholder="e.g. Adding Cisco Meraki steps for our network"
+              maxLength={255}
+              className="mb-4 w-full rounded-lg border border-border bg-background px-3 py-2 text-sm text-foreground placeholder:text-muted-foreground focus:border-primary focus:outline-none focus:ring-1 focus:ring-primary/20"
+              onKeyDown={(e) => e.key === 'Enter' && handleFork()}
+            />
+            <div className="flex gap-2">
+              <button
+                type="button"
+                onClick={handleFork}
+                disabled={isForking}
+                className="flex flex-1 items-center justify-center gap-1.5 rounded-lg bg-gradient-brand py-2 text-sm font-medium text-white shadow-lg shadow-primary/20 hover:opacity-90 disabled:opacity-50"
+              >
+                <GitBranch className="h-3.5 w-3.5" />
+                {isForking ? 'Forking...' : 'Fork Flow'}
+              </button>
+              <button
+                type="button"
+                onClick={() => setForkTarget(null)}
+                className="rounded-lg border border-border px-4 py-2 text-sm text-muted-foreground hover:bg-accent"
+              >
+                Cancel
+              </button>
+            </div>
+          </div>
+        </div>
+      )}
     </div>
   )
 }