Add support for overriding completion buttons

src/backend/ntfy.ts

@@ -13,6 +13,12 @@ type NtfyConfig = {
   map?: string;
   combineMap?: string;
   topic?: string;
+  completion?: {
+    completeButton?: string;
+    completeButton1?: string;
+    completeButton2?: string;
+    completeButton3?: string;
+  }
 } & BackendSettings;
 
 type NtfyDTO = {
@@ -41,7 +47,7 @@ export class NtfySH extends Backend<NtfyConfig> {
     const dto = mapper(task);
     
     const actions = task && profileConfig.completion?.enable && config.server?.baseUrl && !task.recurrenceRule
-      ? [buildCompleteAction(task, profileConfig.name, config.server.baseUrl, "✅")]
+      ? [buildCompleteAction(task, profileConfig.name, config.server.baseUrl, backendConfig?.completion?.completeButton ?? "✅")]
       : [];
 
     this.#doNotify(backendConfig, dto, actions);
@@ -49,6 +55,11 @@ export class NtfySH extends Backend<NtfyConfig> {
 
   protected async notifyCombined(config: Config, profileConfig: ProfileConfig, backendConfig: NtfyConfig, tasks: Task[]): Promise<void> {
     const chunks = chunkArray(tasks, 3);
+    const completionLabels = [
+      backendConfig?.completion?.completeButton1 ?? "✅1️⃣", 
+      backendConfig?.completion?.completeButton2 ?? "✅2️⃣", 
+      backendConfig?.completion?.completeButton3 ?? "✅3️⃣"
+    ];
 
     const context = {
       mapPriority,
@@ -63,7 +74,7 @@ export class NtfySH extends Backend<NtfyConfig> {
       const dto = mapper(chunk);
 
       const actions = profileConfig.completion?.enable && config.server?.baseUrl
-        ? chunk.map((t, i) => buildCompleteAction(t, profileConfig.name, config.server!.baseUrl!, ["✅1️⃣", "✅2️⃣", "✅3️⃣"][i] ?? "✅"))
+        ? chunk.map((t, i) => buildCompleteAction(t, profileConfig.name, config.server!.baseUrl!, completionLabels[i] ?? "✅"))
         : [];
 
       await this.#doNotify(backendConfig, dto, actions);
@@ -101,7 +112,7 @@ function buildCompleteAction(task: Task, profile: string, baseUrl: string, label
   
   return {
     action: "http",
-    label: "✅",
+    label,
     url: `${baseUrl}/complete`,
     method: "POST",
     headers: {