fix(lint): drop async on methods with no await expression

ObsidianReviewBot's last scan (commit 4423052f, 2026-05-09) flagged
three `require-await` violations. The bodies of all three are fully
synchronous — promoting them to sync is the correct fix and removes
the false-positive shape for the marketplace scanner.

- main.ts#reinitializeServices: instantiates services synchronously
  inside try/catch blocks. Drop `async`/`Promise<void>`; drop the
  unnecessary `await` at the lone call site in the settings-saved
  callback.
- claudeService.ts#afterMessage: walks message content and writes
  to the editor via `replaceRange` — both sync. Drop `async`; drop
  the `await` at the two call sites in the Claude streaming flow.
- perplexityService.ts#processStreamingMetadata: post-processes the
  streaming response (think blocks, image placement, search-result
  footer). All operations are sync editor mutations and string
  processing. Drop `async`; drop the `await` at the lone call site.

`pnpm build` passes (eslint clean + tsc + esbuild). Local lint was
already clean against the obsidianmd recommended config — the bot
enforces `@typescript-eslint/require-await: "error"` while the
recommended config disables it, hence the divergence.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

main.ts

@@ -502,7 +502,7 @@ export default class PerplexedPlugin extends Plugin {
                 id: 'reinitialize-services',
                 name: 'Reinitialize provider services',
                 callback: async () => {
-                    await this.reinitializeServices();
+                    this.reinitializeServices();
                 }
             });
 
@@ -1011,7 +1011,7 @@ export default class PerplexedPlugin extends Plugin {
         }
     }
 
-    private async reinitializeServices(): Promise<void> {
+    private reinitializeServices(): void {
         try {
             console.debug('Perplexed Plugin: Reinitializing services...');
             new Notice('Reinitializing perplexed services...');

src/services/claudeService.ts

@@ -141,7 +141,7 @@ export class ClaudeService {
         });
 
         const finalMessage = await stream.finalMessage();
-        await this.afterMessage(finalMessage, editor, headerText);
+        this.afterMessage(finalMessage, editor, headerText);
     }
 
     private async handleNonStreamingResponse(
@@ -165,14 +165,14 @@ export class ClaudeService {
             editor.replaceRange(text, responseCursor);
         }
 
-        await this.afterMessage(finalMessage, editor, headerText);
+        this.afterMessage(finalMessage, editor, headerText);
     }
 
-    private async afterMessage(
+    private afterMessage(
         message: Anthropic.Messages.Message,
         editor: Editor,
         headerText: string
-    ): Promise<void> {
+    ): void {
         const citations = this.extractWebCitations(message);
         if (citations.length > 0) {
             this.addCitations(editor, citations);

src/services/perplexityService.ts

@@ -731,7 +731,7 @@ export class PerplexityService {
             // Process final metadata (citations, images) after streaming is complete
             if (finalResponseData) {
                 console.debug(`📝 Processing final response data [${requestId || 'unknown'}]:`, finalResponseData);
-                await this.processStreamingMetadata(finalResponseData, editor, headerText);
+                this.processStreamingMetadata(finalResponseData, editor, headerText);
             }
             
             // Add final separator at the very end of the document
@@ -754,11 +754,11 @@ export class PerplexityService {
         }
     }
 
-    private async processStreamingMetadata(
+    private processStreamingMetadata(
         finalResponseData: PerplexityStreamChunk,
         editor: Editor,
         headerText?: string
-    ): Promise<void> {
+    ): void {
         console.debug('🔍 Processing streaming metadata');
         console.debug('📊 Response data keys:', Object.keys(finalResponseData || {}));
         if (finalResponseData.images) {