bar: show ping icon when ai or booru finished responding

.config/quickshell/ii/services/Ai.qml

@@ -27,6 +27,8 @@ Singleton {
     readonly property string interfaceRole: "interface"
     readonly property string apiKeyEnvVarName: "API_KEY"
 
+    signal responseFinished()
+
     property string systemPrompt: {
         let prompt = Config.options?.ai?.systemPrompt ?? "";
         for (let key in root.promptSubstitutions) {
@@ -628,6 +630,7 @@ Singleton {
                 root.postResponseHook = null; // Reset hook after use
             }
             root.saveChat("lastSession")
+            root.responseFinished()
         }
 
         function makeRequest() {

.config/quickshell/ii/services/Booru.qml

@@ -14,6 +14,7 @@ Singleton {
     property Component booruResponseDataComponent: BooruResponseData {}
 
     signal tagSuggestion(string query, var suggestions)
+    signal responseFinished()
 
     property string failMessage: Translation.tr("That didn't work. Tips:\n- Check your tags and NSFW settings\n- If you don't have a tag in mind, type a page number")
     property var responses: []
@@ -399,6 +400,7 @@ Singleton {
             else if (xhr.readyState === XMLHttpRequest.DONE) {
                 console.log("[Booru] Request failed with status: " + xhr.status)
             }
+            root.responseFinished()
         }
 
         try {