feat: saved board views and richer board filters

The board now filters by text, type, priority and unassigned tickets as
well. Any combination can be saved as a named view, private or shared with
the project, and opened again with one click.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

apps/api/schema.gql

@@ -399,6 +399,9 @@ type Mutation {
   Delete the project (owner only), with its tickets, comments and releases. `confirmKey` must be the project key.
   """
   deleteProject(confirmKey: String!, projectId: ID!): CommandResult!
+
+  """Delete a view: whoever saved it, or an admin if it is shared"""
+  deleteSavedFilter(id: ID!): Boolean!
   editComment(body: String!, commentId: ID!): CommandResult!
 
   """Relate tickets, e.g. FE DEPENDS_ON BE, QA TESTS FE"""
@@ -422,6 +425,9 @@ type Mutation {
   removeChecklistItem(issueId: ID!, itemId: ID!): CommandResult!
   removeProjectMember(projectId: ID!, userId: ID!): CommandResult!
 
+  """Save the current board filters under a name (members of the project)"""
+  saveFilter(input: SaveFilterInput!): ID!
+
   """
   Place a ticket under an epic or another ticket of the same project (null: back to the top). Three levels at most: epic → ticket → subtask.
   """
@@ -501,7 +507,19 @@ type Project {
   analytics(days: Int! = 90): ProjectAnalytics!
 
   """Kanban board, one column per status"""
-  board(area: String, assigneeId: ID, perColumn: Int! = 50, releaseId: ID): [BoardColumn!]!
+  board(
+    area: String
+    assigneeId: ID
+    labels: [String!]
+    perColumn: Int! = 50
+    priorities: [IssuePriority!]
+    releaseId: ID
+
+    """Matches key, title or description"""
+    search: String
+    types: [String!]
+    unassigned: Boolean
+  ): [BoardColumn!]!
   createdAt: String!
   description: String
   id: ID!
@@ -648,6 +666,9 @@ type Query {
   publicProjects: [Project!]!
   release(id: ID!): Release!
 
+  """My views of the project's board, then the shared ones"""
+  savedFilters(projectId: ID!): [SavedFilter!]!
+
   """Planned releases of all my projects, soonest target date first"""
   upcomingReleases(limit: Int! = 10): [Release!]!
   user(id: String!): User
@@ -718,6 +739,51 @@ enum ReleaseStatus {
   RELEASED
 }
 
+input SaveFilterInput {
+  criteria: SavedFilterCriteriaInput!
+  name: String!
+  projectId: ID!
+
+  """Visible to the whole project (members, not viewers, share)"""
+  shared: Boolean! = false
+}
+
+"""
+A named view of the board: private to whoever saved it, or shared with the project
+"""
+type SavedFilter {
+  createdAt: String!
+  criteria: SavedFilterCriteria!
+  id: ID!
+  name: String!
+  owner: UserRef!
+  projectId: ID!
+  shared: Boolean!
+}
+
+"""What a saved view narrows the board to; empty: everything"""
+type SavedFilterCriteria {
+  areas: [String!]
+  assigneeId: ID
+  labels: [String!]
+  priorities: [IssuePriority!]
+  releaseId: ID
+  search: String
+  types: [String!]
+  unassigned: Boolean
+}
+
+input SavedFilterCriteriaInput {
+  areas: [String!]
+  assigneeId: ID
+  labels: [String!]
+  priorities: [IssuePriority!]
+  releaseId: ID
+  search: String
+  types: [String!]
+  unassigned: Boolean
+}
+
 """
 What a status means, whatever each project calls it. DONE and CANCELLED are finished.
 """