feat: add ticket label management and bulk actions

Implements: https://todo.sr.ht/~ccleberg/hutch/45
Implements: https://todo.sr.ht/~ccleberg/hutch/46

2 files changed, 73 insertions, 0 deletions

diff --git a/HutchTests/TicketBulkActionTests.swift b/HutchTests/TicketBulkActionTests.swift
new file mode 100644
index 0000000..2f4d1fd
--- /dev/null
+++ b/HutchTests/TicketBulkActionTests.swift
@@ -0,0 +1,35 @@
+import Testing
+@testable import Hutch
+
+struct TicketBulkActionTests {
+
+    @Test
+    func bulkActionResultFormatsSuccessMessage() {
+        let result = TicketBulkActionResult(
+            action: .close,
+            totalCount: 3,
+            updatedCount: 3,
+            unchangedCount: 0,
+            failures: []
+        )
+
+        #expect(result.title == "Close Complete")
+        #expect(result.message == "Closed 3 tickets.")
+    }
+
+    @Test
+    func bulkActionResultFormatsPartialFailureMessage() {
+        let result = TicketBulkActionResult(
+            action: .assign,
+            totalCount: 4,
+            updatedCount: 2,
+            unchangedCount: 1,
+            failures: [
+                TicketBulkActionFailure(ticketID: 42, message: "Network error")
+            ]
+        )
+
+        #expect(result.title == "Assign Partially Applied")
+        #expect(result.message == "Assigned 2 tickets. 1 already assigned. Failed: #42.")
+    }
+}
diff --git a/HutchTests/TicketListViewModelTests.swift b/HutchTests/TicketListViewModelTests.swift
index 0f42bf8..a237071 100644
--- a/HutchTests/TicketListViewModelTests.swift
+++ b/HutchTests/TicketListViewModelTests.swift
@@ -2,6 +2,7 @@ import Foundation
 import Testing
 @testable import Hutch
 
+@MainActor
 struct TicketListViewModelTests {
 
     @Test
@@ -82,6 +83,43 @@ struct TicketListViewModelTests {
     }
 
     @Test
+    func synchronizeTicketsReplacesEditedLabelsAndRemovesDeletedOnes() {
+        let existing = [
+            makeTicket(
+                id: 7,
+                title: "Triage me",
+                status: .reported,
+                submitter: "~owner",
+                labels: [
+                    makeLabel(id: 1, name: "bug"),
+                    makeLabel(id: 2, name: "stale")
+                ]
+            )
+        ]
+
+        let updated = TicketListViewModel.synchronizeTickets(
+            existing,
+            with: [makeLabel(id: 1, name: "bugfix")]
+        )
+
+        #expect(updated.first?.labels.map(\.id) == [1])
+        #expect(updated.first?.labels.first?.name == "bugfix")
+    }
+
+    @Test
+    func reconciledSelectedLabelIDsRemovesUnknownIDs() {
+        let reconciled = TicketListViewModel.reconciledSelectedLabelIDs(
+            [1, 2, 5],
+            availableLabels: [
+                makeLabel(id: 2, name: "triage"),
+                makeLabel(id: 3, name: "qa")
+            ]
+        )
+
+        #expect(reconciled == [2])
+    }
+
+    @Test
     @MainActor
     func resolveTicketInputHasCorrectStatusAndDefaultResolution() {
         let input: [String: any Sendable] = [