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, 13 insertions, 8 deletions

diff --git a/Hutch/App/DeepLink.swift b/Hutch/App/DeepLink.swift
index 7467fc8..a0331a0 100644
--- a/Hutch/App/DeepLink.swift
+++ b/Hutch/App/DeepLink.swift
@@ -25,7 +25,7 @@ enum HutchRoute: Equatable, Sendable {
     case trackers
     case systemStatus
     case lookup
-    case search(query: String)
+    case search(query: String, type: LookupType?)
     case projectDashboard(id: String, title: String?)
 
     init?(url: URL) {
@@ -103,7 +103,8 @@ enum HutchRoute: Equatable, Sendable {
 
         case "lookup":
             if let query = queryValue("q"), !query.isEmpty {
-                self = .search(query: query)
+                let type = queryValue("type").flatMap(LookupType.init(rawValue:))
+                self = .search(query: query, type: type)
             } else {
                 self = .lookup
             }
@@ -148,8 +149,12 @@ enum HutchRoute: Equatable, Sendable {
             return Self.makeURL(host: "status")
         case .lookup:
             return Self.makeURL(host: "lookup")
-        case .search(let query):
-            return Self.makeURL(host: "lookup", queryItems: [URLQueryItem(name: "q", value: query)])
+        case .search(let query, let type):
+            var items = [URLQueryItem(name: "q", value: query)]
+            if let type {
+                items.append(URLQueryItem(name: "type", value: type.rawValue))
+            }
+            return Self.makeURL(host: "lookup", queryItems: items)
         case .projectDashboard(let id, let title):
             return Self.makeURL(
                 host: "projects",
@@ -205,8 +210,8 @@ enum DeepLink: Equatable {
     case systemStatus
     /// hutch://lookup
     case lookup
-    /// hutch://lookup?q=<query>
-    case search(query: String)
+    /// hutch://lookup?q=<query>&type=<type>
+    case search(query: String, type: LookupType?)
     /// hutch://builds?filter=failed
     case failedBuilds
     /// hutch://projects/<rid>
@@ -253,8 +258,8 @@ enum DeepLink: Equatable {
             self = .systemStatus
         case .lookup:
             self = .lookup
-        case .search(let query):
-            self = .search(query: query)
+        case .search(let query, let type):
+            self = .search(query: query, type: type)
         case .projectDashboard(let id, let title):
             self = .projectDashboard(id: id, title: title)
         }