feat: a calendar to subscribe to, and the backlog's corners

- Each person can subscribe their dates in Google Calendar, Outlook or
  Apple Calendar: GET /api/calendar/{token}.ics (no session) brings
  their unfinished tickets with a due date (assigned or followed), the
  planned and running sprints and the planned releases of their
  projects, as all-day events linking to the web. The token is made,
  renewed or dropped under /me/calendar (and in GraphQL); in the web,
  from «Calendario» in «Mi trabajo».
- The backlog panel keeps the selected rows' background inside its
  rounded corners.

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

libs/web/tracker/infrastructure/src/lib/graphql/generated.ts

@@ -438,6 +438,26 @@ export type DeleteAutomationMutationVariables = Exact<{
 
 export type DeleteAutomationMutation = { deleteAutomation: boolean };
 
+export type MyCalendarFeedQueryVariables = Exact<{ [key: string]: never }>;
+
+export type MyCalendarFeedQuery = {
+  myCalendarFeed: { token: string; createdAt: string } | null;
+};
+
+export type CreateCalendarFeedMutationVariables = Exact<{
+  [key: string]: never;
+}>;
+
+export type CreateCalendarFeedMutation = {
+  createCalendarFeed: { token: string; createdAt: string };
+};
+
+export type RevokeCalendarFeedMutationVariables = Exact<{
+  [key: string]: never;
+}>;
+
+export type RevokeCalendarFeedMutation = { revokeCalendarFeed: boolean };
+
 export type UserRefFieldsFragment = { id: string; name: string };
 
 export type ProjectFieldsFragment = {
@@ -3796,6 +3816,83 @@ export const DeleteAutomationDocument = {
   DeleteAutomationMutation,
   DeleteAutomationMutationVariables
 >;
+export const MyCalendarFeedDocument = {
+  kind: 'Document',
+  definitions: [
+    {
+      kind: 'OperationDefinition',
+      operation: 'query',
+      name: { kind: 'Name', value: 'MyCalendarFeed' },
+      selectionSet: {
+        kind: 'SelectionSet',
+        selections: [
+          {
+            kind: 'Field',
+            name: { kind: 'Name', value: 'myCalendarFeed' },
+            selectionSet: {
+              kind: 'SelectionSet',
+              selections: [
+                { kind: 'Field', name: { kind: 'Name', value: 'token' } },
+                { kind: 'Field', name: { kind: 'Name', value: 'createdAt' } },
+              ],
+            },
+          },
+        ],
+      },
+    },
+  ],
+} as unknown as DocumentNode<MyCalendarFeedQuery, MyCalendarFeedQueryVariables>;
+export const CreateCalendarFeedDocument = {
+  kind: 'Document',
+  definitions: [
+    {
+      kind: 'OperationDefinition',
+      operation: 'mutation',
+      name: { kind: 'Name', value: 'CreateCalendarFeed' },
+      selectionSet: {
+        kind: 'SelectionSet',
+        selections: [
+          {
+            kind: 'Field',
+            name: { kind: 'Name', value: 'createCalendarFeed' },
+            selectionSet: {
+              kind: 'SelectionSet',
+              selections: [
+                { kind: 'Field', name: { kind: 'Name', value: 'token' } },
+                { kind: 'Field', name: { kind: 'Name', value: 'createdAt' } },
+              ],
+            },
+          },
+        ],
+      },
+    },
+  ],
+} as unknown as DocumentNode<
+  CreateCalendarFeedMutation,
+  CreateCalendarFeedMutationVariables
+>;
+export const RevokeCalendarFeedDocument = {
+  kind: 'Document',
+  definitions: [
+    {
+      kind: 'OperationDefinition',
+      operation: 'mutation',
+      name: { kind: 'Name', value: 'RevokeCalendarFeed' },
+      selectionSet: {
+        kind: 'SelectionSet',
+        selections: [
+          {
+            kind: 'Field',
+            name: { kind: 'Name', value: 'revokeCalendarFeed' },
+          },
+        ],
+      },
+    },
+  ],
+} as unknown as DocumentNode<
+  RevokeCalendarFeedMutation,
+  RevokeCalendarFeedMutationVariables
+>;
 export const GitIntegrationDocument = {
   kind: 'Document',
   definitions: [