fix: prevent duplicate labels at database level

packages/server/prisma/migrations/20260515094021_merge_duplicate_labels/migration.sql

@@ -0,0 +1,47 @@
+-- Step 1: Move issue associations from duplicate labels to the keeper (earliest id per name)
+INSERT INTO "_IssueToIssueLabel" ("A", "B")
+SELECT DISTINCT dup_assoc."A", keepers.keeper_id
+FROM "_IssueToIssueLabel" dup_assoc
+JOIN "IssueLabel" dup ON dup.id = dup_assoc."B"
+JOIN (
+  SELECT name, (MIN(id::text))::uuid AS keeper_id
+  FROM "IssueLabel"
+  GROUP BY name
+  HAVING COUNT(*) > 1
+) keepers ON keepers.name = dup.name AND dup.id != keepers.keeper_id
+WHERE NOT EXISTS (
+  SELECT 1 FROM "_IssueToIssueLabel" existing
+  WHERE existing."A" = dup_assoc."A" AND existing."B" = keepers.keeper_id
+);
+
+-- Step 2: Remove associations pointing to duplicate (non-keeper) labels
+DELETE FROM "_IssueToIssueLabel"
+WHERE "B" IN (
+  SELECT dup.id
+  FROM "IssueLabel" dup
+  JOIN (
+    SELECT name, (MIN(id::text))::uuid AS keeper_id
+    FROM "IssueLabel"
+    GROUP BY name
+    HAVING COUNT(*) > 1
+  ) keepers ON keepers.name = dup.name AND dup.id != keepers.keeper_id
+);
+
+-- Step 3: Delete duplicate labels (keep the earliest id per name)
+DELETE FROM "IssueLabel"
+WHERE id IN (
+  SELECT dup.id
+  FROM "IssueLabel" dup
+  JOIN (
+    SELECT name, (MIN(id::text))::uuid AS keeper_id
+    FROM "IssueLabel"
+    GROUP BY name
+    HAVING COUNT(*) > 1
+  ) keepers ON keepers.name = dup.name AND dup.id != keepers.keeper_id
+);
+
+-- Step 4: Add unique constraint on name
+ALTER TABLE "IssueLabel" ADD CONSTRAINT "IssueLabel_name_key" UNIQUE ("name");
+
+-- Step 5: Drop the now-redundant index (unique constraint already creates one)
+DROP INDEX IF EXISTS "IssueLabel_name_idx";

packages/server/prisma/schema.prisma

@@ -62,10 +62,8 @@ model WorkflowState {
 
 model IssueLabel {
   id     String  @id @default(uuid()) @db.Uuid
-  name   String
+  name   String  @unique
   issues Issue[]
-
-  @@index([name])
 }
 
 model User {

packages/server/src/import-pipeline.test.ts

@@ -208,7 +208,7 @@ describe('import pipeline', () => {
     expect(labels.map((l) => l.name)).toEqual(['bug', 'feature', 'urgent']);
   });
 
-  it('allows multiple imported labels to share the same name without collapsing them', async () => {
+  it('deduplicates imported labels that share the same name', async () => {
     const duplicateNameLabels = [
       ...FIXTURE_LABELS,
       { id: 'linear-label-4', name: 'bug', color: '#0000ff' },
@@ -233,7 +233,7 @@ describe('import pipeline', () => {
       where: { name: 'bug' },
       orderBy: { id: 'asc' },
     });
-    expect(labels).toHaveLength(2);
+    expect(labels).toHaveLength(1);
 
     const importedIssue = await prisma.issue.findUnique({
       where: { identifier: 'SON-43' },
@@ -250,8 +250,7 @@ describe('import pipeline', () => {
       },
       orderBy: { oldId: 'asc' },
     });
-    expect(labelMappings).toHaveLength(2);
-    expect(new Set(labelMappings.map((mapping) => mapping.newId)).size).toBe(2);
+    expect(labelMappings).toHaveLength(1);
   });
 
   it('imports users with name and email preserved', async () => {

packages/server/src/import-pipeline.ts

@@ -132,13 +132,21 @@ async function createMapping(
   newId: string,
   entityType: string,
 ): Promise<void> {
-  await prisma.legacyLinearMapping.upsert({
-    where: {
-      oldId_entityType: { oldId, entityType },
-    },
-    create: { oldId, newId, entityType },
-    update: {},
-  });
+  try {
+    await prisma.legacyLinearMapping.upsert({
+      where: {
+        oldId_entityType: { oldId, entityType },
+      },
+      create: { oldId, newId, entityType },
+      update: {},
+    });
+  } catch (error: unknown) {
+    const prismaError = error as { code?: string };
+    if (prismaError.code === 'P2002') {
+      return;
+    }
+    throw error;
+  }
 }
 
 function recordSkippedImport(
@@ -282,10 +290,16 @@ async function importLabels(
     }
 
     const created = await prisma.$transaction(async (transaction) => {
-      const nextLabel = await transaction.issueLabel.create({
-        data: { name: label.name },
+      let nextLabel = await transaction.issueLabel.findFirst({
+        where: { name: label.name },
       });
 
+      if (!nextLabel) {
+        nextLabel = await transaction.issueLabel.create({
+          data: { name: label.name },
+        });
+      }
+
       await createMapping(transaction, label.id, nextLabel.id, 'label');
       return nextLabel;
     });

packages/web/src/App.board-controls.test.tsx

@@ -16,6 +16,8 @@ describe('App board controls', () => {
 
     expect(await screen.findByRole('heading', { name: 'All issues' })).toBeInTheDocument();
 
+    fireEvent.click(screen.getByRole('button', { name: /Filter/ }));
+
     const filters = screen.getByLabelText('Board filters');
     fireEvent.click(within(filters).getByText('Labels'));
     fireEvent.click(screen.getByRole('checkbox', { name: 'Bug' }));
@@ -84,6 +86,8 @@ describe('App board controls', () => {
 
     expect(await screen.findByRole('heading', { name: 'All issues' })).toBeInTheDocument();
 
+    fireEvent.click(screen.getByRole('button', { name: /Filter/ }));
+
     fireEvent.change(screen.getByLabelText('Sort board by'), {
       target: { value: 'title' },
     });
@@ -129,6 +133,9 @@ describe('App board controls', () => {
     renderApp({ data: boardQueryResult, loading: false }, ['/']);
 
     expect(await screen.findByRole('heading', { name: 'All issues' })).toBeInTheDocument();
+
+    fireEvent.click(screen.getByRole('button', { name: /Filter/ }));
+
     expect(screen.getByTestId('issue-card-issue-1')).toHaveAttribute('data-focused', 'true');
 
     fireEvent.keyDown(window, { key: 'x' });
@@ -154,7 +161,11 @@ describe('App board controls', () => {
   it('focuses board search with slash and clears it with Escape', async () => {
     renderApp({ data: boardQueryResult, loading: false }, ['/']);
 
-    const searchInput = await screen.findByLabelText('Search board issues');
+    expect(await screen.findByRole('heading', { name: 'All issues' })).toBeInTheDocument();
+
+    fireEvent.click(screen.getByRole('button', { name: /Filter/ }));
+
+    const searchInput = screen.getByLabelText('Search board issues');
     fireEvent.keyDown(window, { key: '/' });
     expect(searchInput).toHaveFocus();
 
@@ -232,6 +243,8 @@ describe('App board controls', () => {
 
     expect(await screen.findByRole('heading', { name: 'All issues' })).toBeInTheDocument();
 
+    fireEvent.click(screen.getByRole('button', { name: /Filter/ }));
+
     fireEvent.keyDown(window, { key: 'x' });
 
     fireEvent.change(screen.getByLabelText('Bulk assign selected issues'), {
@@ -288,6 +301,8 @@ describe('App board controls', () => {
 
     expect(await screen.findByRole('heading', { name: 'All issues' })).toBeInTheDocument();
 
+    fireEvent.click(screen.getByRole('button', { name: /Filter/ }));
+
     const filters = screen.getByLabelText('Board filters');
     fireEvent.click(within(filters).getByText('Labels'));
     fireEvent.click(screen.getByRole('checkbox', { name: 'Bug' }));

packages/web/src/App.palette.test.tsx

@@ -68,6 +68,8 @@ describe('App command palette', () => {
 
     expect(await screen.findByRole('heading', { name: 'All issues' })).toBeInTheDocument();
 
+    fireEvent.click(screen.getByRole('button', { name: /Filter/ }));
+
     const filters = screen.getByLabelText('Board filters');
     fireEvent.click(within(filters).getByText('Labels'));
     fireEvent.click(screen.getByRole('checkbox', { name: 'Bug' }));

packages/web/src/components/IssueDetailDrawer.tsx

@@ -151,7 +151,7 @@ export function IssueDetailDrawer({
         id: `${issue.id}-labels`,
         meta: issue.updatedAt,
         title: 'Labels updated',
-        body: issue.labels.nodes.map((label) => label.name).join(', '),
+        body: [...new Set(issue.labels.nodes.map((label) => label.name))].join(', '),
       });
     }
 

packages/web/src/routes/BacklogPage.tsx

@@ -399,7 +399,7 @@ export function BacklogPage({
                   <td>{issue.state.name}</td>
                   <td>
                     {issue.labels.nodes.length > 0
-                      ? issue.labels.nodes.map((label) => label.name).join(', ')
+                      ? [...new Set(issue.labels.nodes.map((label) => label.name))].join(', ')
                       : '—'}
                   </td>
                   <td>{issue.assignee?.name ?? issue.assignee?.email ?? 'Unassigned'}</td>

packages/web/src/routes/BoardPage.tsx

@@ -87,7 +87,7 @@ import { IssueCard } from '../components/IssueCard';
 import { IssueDetailDrawer } from '../components/IssueDetailDrawer';
 import { KanbanView } from '../components/KanbanView';
 import { BacklogPage } from './BacklogPage';
-import { IcoFilter, IcoSort, IcoPlus, IcoList, IcoBoard, IcoClose, IcoChevR } from '../components/Icons';
+import { IcoFilter, IcoPlus, IcoList, IcoBoard, IcoClose, IcoChevR } from '../components/Icons';
 import { Btn, PriorityIcon } from '../components/Primitives';
 
 const ISSUE_PAGE_SIZE = 200;
@@ -205,9 +205,13 @@ export function BoardPage() {
   );
   const teams = queryData?.teams.nodes ?? EMPTY_TEAMS;
   const users = queryData?.users.nodes ?? EMPTY_USERS;
-  const labels = useMemo(() => Array.from(
-    new Map((queryData?.issueLabels.nodes ?? EMPTY_LABELS).map(l => [l.id, l])).values()
-  ), [queryData?.issueLabels.nodes]);
+  const labels = useMemo(() => {
+    const seen = new Map<string, (typeof EMPTY_LABELS)[number]>();
+    for (const l of queryData?.issueLabels.nodes ?? EMPTY_LABELS) {
+      if (!seen.has(l.name)) seen.set(l.name, l);
+    }
+    return Array.from(seen.values());
+  }, [queryData?.issueLabels.nodes]);
   const baseIssues = queryData?.issues.nodes ?? EMPTY_ISSUES;
   const [createdIssues, setCreatedIssues] = useState<IssueSummary[]>([]);
   const [issueOverrides, setIssueOverrides] = useState<Record<string, IssueSummary>>({});
@@ -236,6 +240,7 @@ export function BoardPage() {
   const [activeSavedBoardViewId, setActiveSavedBoardViewId] = useState('');
   const boardSearchInputRef = useRef<HTMLInputElement | null>(null);
   const [inlineCreateGroupId, setInlineCreateGroupId] = useState<string | null>(null);
+  const [filterBarVisible, setFilterBarVisible] = useState(false);
   const [collapsedColumns, setCollapsedColumns] = useState<Record<string, boolean>>(() => {
     try {
       const stored = localStorage.getItem('involute:collapsed-columns');
@@ -1727,8 +1732,7 @@ export function BoardPage() {
             ))}
           </select>
         ) : null}
-        <Btn variant="ghost" icon={<IcoFilter size={14} />} size="sm">Filter</Btn>
-        <Btn variant="ghost" icon={<IcoSort size={14} />} size="sm">Sort</Btn>
+        <Btn variant="ghost" icon={<IcoFilter size={14} />} size="sm" onClick={() => setFilterBarVisible((v) => !v)}>{filterBarVisible ? 'Hide filters' : 'Filter'}</Btn>
         <div style={{ width: 1, height: 16, background: 'var(--border)' }} />
         <Btn
           variant="subtle"
@@ -1750,7 +1754,7 @@ export function BoardPage() {
         </section>
       ) : null}
 
-      {!isBacklogView ? (
+      {!isBacklogView && filterBarVisible ? (
         <>
           <section style={{
             display: 'flex', alignItems: 'center', gap: 6,

packages/web/src/routes/IssuePage.tsx

@@ -203,7 +203,7 @@ export function IssuePage() {
         id: `${issueSnapshot.id}-labels`,
         timestamp: issueSnapshot.updatedAt,
         title: 'Labels updated',
-        body: issueSnapshot.labels.nodes.map((l) => l.name).join(', '),
+        body: [...new Set(issueSnapshot.labels.nodes.map((l) => l.name))].join(', '),
       });
     }
 
@@ -525,9 +525,15 @@ export function IssuePage() {
   }
 
   const activeIssue = issueSnapshot;
-  const allLabels = Array.from(
-    new Map((data?.issueLabels.nodes ?? []).map(l => [l.id, l])).values()
-  );
+  const allLabels = (() => {
+    const raw = data?.issueLabels.nodes ?? [];
+    const namesSeen = new Set<string>();
+    return raw.filter((l) => {
+      if (namesSeen.has(l.name)) return false;
+      namesSeen.add(l.name);
+      return true;
+    });
+  })();
   const allUsers = data?.users.nodes ?? [];
 
   // --- Render ---
@@ -968,9 +974,16 @@ export function IssuePage() {
             <Kbd keys={['⌘', 'L']} />
           </button>
 
-          <button type="button" className="issue-panel__action-btn">
+          <button
+            type="button"
+            className="issue-panel__action-btn"
+            onClick={() => {
+              const link = `[${activeIssue.identifier}](${window.location.href})`;
+              void navigator.clipboard.writeText(link);
+            }}
+          >
             <span style={{ color: 'var(--fg-dim)', display: 'inline-flex' }}><IcoLink size={13} /></span>
-            <span>Link to issue</span>
+            <span>Copy markdown link</span>
           </button>
 
           <button

packages/web/src/routes/SettingsPage.tsx

@@ -328,6 +328,7 @@ function PreferencesTab() {
 }
 
 function AccessTab() {
+  const navigate = useNavigate();
   const teamKey = readStoredTeamKey();
   const { data, loading } = useQuery<BoardPageQueryData, BoardPageQueryVariables>(BOARD_PAGE_QUERY, {
     variables: {
@@ -388,7 +389,7 @@ function AccessTab() {
       )}
 
       <div style={{ marginTop: 16 }}>
-        <Btn variant="subtle" icon={<IcoPlus />} size="md">Invite members</Btn>
+        <Btn variant="subtle" icon={<IcoPlus />} size="md" onClick={() => navigate('/members')}>Invite members</Btn>
       </div>
     </>
   );