Expand App Intents: dialogs, search type, mutating intents (#17)

Addresses the three open items on the App Intents ticket:

- Check Status / Check Builds now return a spoken/visible dialog alongside
  their value, so they surface a result in Siri instead of appearing to do
  nothing. Logic consolidated to always produce a message.
- Search Hutch gains a Search Type parameter (user, git/hg repo, mailing
  list, tracker, build job) threaded through the .search route into Lookup,
  which pre-selects the type. LookupType now conforms to AppEnum.
- Adds mutating intents (not just navigation): Clear Recent Activity and
  Unpin Resource, backed by RecentActivityStore.clear and a new
  HomePinStore.removePin. Both act on the active account's storage.

Tests cover search-type routing, the blank-query fallback, and pin removal.

1 files changed, 2 insertions, 1 deletions

diff --git a/HutchTests/DeepLinkTests.swift b/HutchTests/DeepLinkTests.swift
index d62cfef..cdc5bab 100644
--- a/HutchTests/DeepLinkTests.swift
+++ b/HutchTests/DeepLinkTests.swift
@@ -92,7 +92,8 @@ struct DeepLinkTests {
     func parsesRouteBackedNavigationLinks() {
         #expect(DeepLink(url: HutchRoute.workQueue(scope: .assigned).url) == .workQueue(scope: .assigned))
         #expect(DeepLink(url: HutchRoute.failedBuilds.url) == .failedBuilds)
-        #expect(DeepLink(url: HutchRoute.search(query: "patch queue").url) == .search(query: "patch queue"))
+        #expect(DeepLink(url: HutchRoute.search(query: "patch queue", type: nil).url) == .search(query: "patch queue", type: nil))
+        #expect(DeepLink(url: HutchRoute.search(query: "~alice", type: .user).url) == .search(query: "~alice", type: .user))
         #expect(DeepLink(url: HutchRoute.projectDashboard(id: "project-1", title: "Hutch").url) == .projectDashboard(id: "project-1", title: "Hutch"))
     }