feat(feedback): route in-app feedback to Slack via Cloudflare Worker relay

.github/actions/setup-build/action.yml

@@ -14,6 +14,14 @@ inputs:
     description: Build variant to embed (canary | prod)
     required: false
     default: 'prod'
+  feedback-relay-url:
+    description: Feedback → Slack relay Worker URL
+    required: false
+    default: 'https://emdash-feedback-relay.real-general-action.workers.dev'
+  feedback-relay-secret:
+    description: Feedback relay shared secret
+    required: false
+    default: ''
   windows-native:
     description: Set to true on Windows to pass MSVC/gyp flags to pnpm install
     required: false
@@ -64,7 +72,11 @@ runs:
         PH_KEY: ${{ inputs.posthog-key }}
         PH_HOST: ${{ inputs.posthog-host }}
         BUILD_VARIANT: ${{ inputs.build-variant }}
+        FEEDBACK_RELAY_URL: ${{ inputs.feedback-relay-url }}
+        FEEDBACK_RELAY_SECRET: ${{ inputs.feedback-relay-secret }}
       run: |
         echo "VITE_POSTHOG_KEY=$PH_KEY" >> apps/emdash-desktop/.env.production
         echo "VITE_POSTHOG_HOST=$PH_HOST" >> apps/emdash-desktop/.env.production
         echo "VITE_BUILD=$BUILD_VARIANT" >> apps/emdash-desktop/.env.production
+        echo "VITE_FEEDBACK_RELAY_URL=$FEEDBACK_RELAY_URL" >> apps/emdash-desktop/.env.production
+        echo "VITE_FEEDBACK_RELAY_SECRET=$FEEDBACK_RELAY_SECRET" >> apps/emdash-desktop/.env.production

.github/workflows/release-canary.yml

@@ -73,6 +73,7 @@ jobs:
         with:
           posthog-key: ${{ secrets.POSTHOG_PROJECT_API_KEY }}
           posthog-host: ${{ secrets.POSTHOG_HOST }}
+          feedback-relay-secret: ${{ secrets.FEEDBACK_RELAY_SECRET }}
           build-variant: canary
           setup-python: 'false'
 
@@ -115,6 +116,7 @@ jobs:
         with:
           posthog-key: ${{ secrets.POSTHOG_PROJECT_API_KEY }}
           posthog-host: ${{ secrets.POSTHOG_HOST }}
+          feedback-relay-secret: ${{ secrets.FEEDBACK_RELAY_SECRET }}
           build-variant: canary
           windows-native: 'true'
       - name: Export Python path for native modules
@@ -185,6 +187,7 @@ jobs:
         with:
           posthog-key: ${{ secrets.POSTHOG_PROJECT_API_KEY }}
           posthog-host: ${{ secrets.POSTHOG_HOST }}
+          feedback-relay-secret: ${{ secrets.FEEDBACK_RELAY_SECRET }}
           build-variant: canary
 
       - name: Import Apple signing certificate

.github/workflows/release-prod.yml

@@ -75,6 +75,7 @@ jobs:
         with:
           posthog-key: ${{ secrets.POSTHOG_PROJECT_API_KEY }}
           posthog-host: ${{ secrets.POSTHOG_HOST }}
+          feedback-relay-secret: ${{ secrets.FEEDBACK_RELAY_SECRET }}
           setup-python: 'false'
 
       - run: pnpm run build
@@ -113,6 +114,7 @@ jobs:
         with:
           posthog-key: ${{ secrets.POSTHOG_PROJECT_API_KEY }}
           posthog-host: ${{ secrets.POSTHOG_HOST }}
+          feedback-relay-secret: ${{ secrets.FEEDBACK_RELAY_SECRET }}
           windows-native: 'true'
       - name: Export Python path for native modules
         shell: bash
@@ -179,6 +181,7 @@ jobs:
         with:
           posthog-key: ${{ secrets.POSTHOG_PROJECT_API_KEY }}
           posthog-host: ${{ secrets.POSTHOG_HOST }}
+          feedback-relay-secret: ${{ secrets.FEEDBACK_RELAY_SECRET }}
 
       - name: Import Apple signing certificate
         uses: apple-actions/import-codesign-certs@v2

apps/emdash-desktop/src/main/core/feedback/controller.ts

@@ -0,0 +1,16 @@
+import { createRPCController } from '@shared/lib/ipc/rpc';
+import { submitFeedback, type SubmitFeedbackInput } from './service';
+
+export const feedbackController = createRPCController({
+  submit: async (input: SubmitFeedbackInput) => {
+    try {
+      await submitFeedback(input);
+      return { success: true as const };
+    } catch (error) {
+      return {
+        success: false as const,
+        error: error instanceof Error ? error.message : String(error),
+      };
+    }
+  },
+});

apps/emdash-desktop/src/main/core/feedback/service.ts

@@ -0,0 +1,43 @@
+import { env } from '@main/lib/env';
+import { log } from '@main/lib/logger';
+
+// Kept in sync with services/feedback-relay.
+const RELAY_SECRET_HEADER = 'x-emdash-feedback-secret';
+
+export interface FeedbackFileInput {
+  filename: string;
+  mimeType: string;
+  bytes: ArrayBuffer;
+}
+
+export interface SubmitFeedbackInput {
+  content: string;
+  files: FeedbackFileInput[];
+}
+
+export async function submitFeedback({ content, files }: SubmitFeedbackInput): Promise<void> {
+  const relayUrl = env.build.VITE_FEEDBACK_RELAY_URL;
+  if (!relayUrl) {
+    throw new Error('Feedback relay URL is not configured');
+  }
+
+  const formData = new FormData();
+  formData.append('content', content);
+  files.forEach((file, index) => {
+    const blob = new Blob([file.bytes], { type: file.mimeType || 'application/octet-stream' });
+    formData.append(`file${index}`, blob, file.filename);
+  });
+
+  const headers: Record<string, string> = {};
+  const secret = env.build.VITE_FEEDBACK_RELAY_SECRET;
+  if (secret) {
+    headers[RELAY_SECRET_HEADER] = secret;
+  }
+
+  const response = await fetch(relayUrl, { method: 'POST', body: formData, headers });
+  if (!response.ok) {
+    const detail = await response.text().catch(() => '');
+    log.error('Feedback relay returned an error', { status: response.status, detail });
+    throw new Error(`Feedback relay returned ${response.status}`);
+  }
+}

apps/emdash-desktop/src/main/lib/env.ts

@@ -5,6 +5,8 @@ const buildSchema = z.object({
   VITE_POSTHOG_KEY: z.string().optional(),
   VITE_POSTHOG_HOST: z.string().optional(),
   VITE_BUILD: z.enum(['canary', 'prod']).default('prod'),
+  VITE_FEEDBACK_RELAY_URL: z.string().optional(),
+  VITE_FEEDBACK_RELAY_SECRET: z.string().optional(),
 });
 
 // Dev-only overrides: read from process.env (supports non-VITE_ prefixed vars,

apps/emdash-desktop/src/main/rpc.ts

@@ -9,6 +9,7 @@ import { browserController } from './core/browser/controller';
 import { conversationController } from './core/conversations/controller';
 import { editorBufferController } from './core/editor/controller';
 import { featurebaseController } from './core/featurebase/controller';
+import { feedbackController } from './core/feedback/controller';
 import { machineFilesController } from './core/files/controller';
 import { workspaceFileSystemController } from './core/files/file-system/controller';
 import { fileTreeController } from './core/files/file-tree/controller';
@@ -61,6 +62,7 @@ export const rpcRouter = createRPCRouter({
   resourceMonitor: resourceMonitorController,
   asana: asanaController,
   featurebase: featurebaseController,
+  feedback: feedbackController,
   forgejo: forgejoController,
   files: machineFilesController,
   github: githubController,

apps/emdash-desktop/src/renderer/lib/components/feedback-modal/build-feedback-content.ts

@@ -0,0 +1,63 @@
+export interface FeedbackGithubUser {
+  login?: string;
+  name?: string;
+  html_url?: string;
+  email?: string;
+}
+
+interface BuildFeedbackContentOptions {
+  feedback: string;
+  contactEmail: string;
+  githubUser?: FeedbackGithubUser | null;
+  appVersion?: string | null;
+  platformDisplayName?: string | null;
+  includeDiagnosticLogs?: boolean;
+}
+
+// Standalone module (no IPC imports) so it can be unit-tested without a `window`.
+export function buildFeedbackContent({
+  feedback,
+  contactEmail,
+  githubUser,
+  appVersion,
+  platformDisplayName,
+  includeDiagnosticLogs,
+}: BuildFeedbackContentOptions): string {
+  const trimmedFeedback = feedback.trim();
+  const trimmedContact = contactEmail.trim();
+  const metadataLines: string[] = [];
+
+  if (trimmedContact) {
+    metadataLines.push(`Contact: ${trimmedContact}`);
+  }
+
+  const githubLogin = githubUser?.login?.trim();
+  const githubName = githubUser?.name?.trim();
+  if (githubLogin || githubName) {
+    const parts: string[] = [];
+    if (githubName && githubLogin) {
+      parts.push(`${githubName} (@${githubLogin})`);
+    } else if (githubName) {
+      parts.push(githubName);
+    } else if (githubLogin) {
+      parts.push(`@${githubLogin}`);
+    }
+    metadataLines.push(`GitHub: ${parts.join(' ')}`);
+  }
+
+  const trimmedAppVersion = appVersion?.trim();
+  if (trimmedAppVersion) {
+    metadataLines.push(`Emdash Version: ${trimmedAppVersion}`);
+  }
+
+  const trimmedPlatformDisplayName = platformDisplayName?.trim();
+  if (trimmedPlatformDisplayName) {
+    metadataLines.push(`Platform: ${trimmedPlatformDisplayName}`);
+  }
+
+  if (includeDiagnosticLogs) {
+    metadataLines.push('Diagnostic Logs: attached by user opt-in');
+  }
+
+  return [trimmedFeedback, metadataLines.join('\n')].filter(Boolean).join('\n\n');
+}

apps/emdash-desktop/src/renderer/lib/components/feedback-modal/use-feedback-submit.test.ts

@@ -1,6 +1,6 @@
 import { describe, expect, it } from 'vitest';
+import { buildFeedbackContent } from './build-feedback-content';
 import { FEEDBACK_EMAIL_SCHEMA } from './schemas/feedback-email';
-import { buildFeedbackContent } from './use-feedback-submit';
 
 describe('buildFeedbackContent', () => {
   it('includes feedback, metadata, and app version when provided', () => {

apps/emdash-desktop/src/renderer/lib/components/feedback-modal/use-feedback-submit.ts

@@ -1,84 +1,20 @@
 import { useCallback, useState } from 'react';
 import { useToast } from '@renderer/lib/hooks/use-toast';
+import { rpc } from '@renderer/lib/ipc';
 import { log } from '@renderer/utils/logger';
+import { buildFeedbackContent, type FeedbackGithubUser } from './build-feedback-content';
 import { FEEDBACK_EMAIL_SCHEMA } from './schemas/feedback-email';
 
-const DISCORD_WEBHOOK_URL =
-  'https://discord.com/api/webhooks/1473390363388416230/eRIo1UhylapH94KpqUUp5PDzkLhjBvcnjjyE_JezfHiAyfN3QEbRyEIJaSl8QQUz7Mak';
-
-const DISCORD_MAX_FILES = 10;
-const DISCORD_MAX_PAYLOAD_BYTES = 8 * 1024 * 1024;
-
-interface GithubUser {
-  login?: string;
-  name?: string;
-  html_url?: string;
-  email?: string;
-}
+const FEEDBACK_MAX_FILES = 10;
+const FEEDBACK_MAX_PAYLOAD_BYTES = 8 * 1024 * 1024;
 
 interface FeedbackSubmitOptions {
-  githubUser?: GithubUser | null;
+  githubUser?: FeedbackGithubUser | null;
   appVersion?: string | null;
   platformDisplayName?: string | null;
   onSuccess: () => void;
 }
 
-interface BuildFeedbackContentOptions {
-  feedback: string;
-  contactEmail: string;
-  githubUser?: GithubUser | null;
-  appVersion?: string | null;
-  platformDisplayName?: string | null;
-  includeDiagnosticLogs?: boolean;
-}
-
-export function buildFeedbackContent({
-  feedback,
-  contactEmail,
-  githubUser,
-  appVersion,
-  platformDisplayName,
-  includeDiagnosticLogs,
-}: BuildFeedbackContentOptions): string {
-  const trimmedFeedback = feedback.trim();
-  const trimmedContact = contactEmail.trim();
-  const metadataLines: string[] = [];
-
-  if (trimmedContact) {
-    metadataLines.push(`Contact: ${trimmedContact}`);
-  }
-
-  const githubLogin = githubUser?.login?.trim();
-  const githubName = githubUser?.name?.trim();
-  if (githubLogin || githubName) {
-    const parts: string[] = [];
-    if (githubName && githubLogin) {
-      parts.push(`${githubName} (@${githubLogin})`);
-    } else if (githubName) {
-      parts.push(githubName);
-    } else if (githubLogin) {
-      parts.push(`@${githubLogin}`);
-    }
-    metadataLines.push(`GitHub: ${parts.join(' ')}`);
-  }
-
-  const trimmedAppVersion = appVersion?.trim();
-  if (trimmedAppVersion) {
-    metadataLines.push(`Emdash Version: ${trimmedAppVersion}`);
-  }
-
-  const trimmedPlatformDisplayName = platformDisplayName?.trim();
-  if (trimmedPlatformDisplayName) {
-    metadataLines.push(`Platform: ${trimmedPlatformDisplayName}`);
-  }
-
-  if (includeDiagnosticLogs) {
-    metadataLines.push('Diagnostic Logs: attached by user opt-in');
-  }
-
-  return [trimmedFeedback, metadataLines.join('\n')].filter(Boolean).join('\n\n');
-}
-
 export function useFeedbackSubmit({
   githubUser,
   appVersion,
@@ -141,16 +77,16 @@ export function useFeedbackSubmit({
 
       const files = diagnosticLog ? [...attachments, diagnosticLog] : attachments;
 
-      if (files.length > DISCORD_MAX_FILES) {
+      if (files.length > FEEDBACK_MAX_FILES) {
         setErrorMessage(
-          `Too many attachments (max ${DISCORD_MAX_FILES}). Remove some and try again.`
+          `Too many attachments (max ${FEEDBACK_MAX_FILES}). Remove some and try again.`
         );
         setSubmitting(false);
         return;
       }
 
       const totalBytes = files.reduce((sum, file) => sum + file.size, 0);
-      if (totalBytes > DISCORD_MAX_PAYLOAD_BYTES) {
+      if (totalBytes > FEEDBACK_MAX_PAYLOAD_BYTES) {
         setErrorMessage('Attachments exceed the 8 MB total limit. Remove some and try again.');
         setSubmitting(false);
         return;
@@ -166,24 +102,17 @@ export function useFeedbackSubmit({
       });
 
       try {
-        let response: Response;
-        if (files.length > 0) {
-          const formData = new FormData();
-          formData.append('content', content);
-          files.forEach((file, index) => {
-            formData.append(`file${index}`, file);
-          });
-          response = await fetch(DISCORD_WEBHOOK_URL, { method: 'POST', body: formData });
-        } else {
-          response = await fetch(DISCORD_WEBHOOK_URL, {
-            method: 'POST',
-            headers: { 'Content-Type': 'application/json' },
-            body: JSON.stringify({ content }),
-          });
-        }
+        const payloadFiles = await Promise.all(
+          files.map(async (file) => ({
+            filename: file.name,
+            mimeType: file.type,
+            bytes: await file.arrayBuffer(),
+          }))
+        );
 
-        if (!response.ok) {
-          throw new Error(`Discord webhook returned ${response.status}`);
+        const result = await rpc.feedback.submit({ content, files: payloadFiles });
+        if (!result.success) {
+          throw new Error(result.error ?? 'Feedback submission failed');
         }
 
         onSuccess();

services/feedback-relay/.gitignore

@@ -0,0 +1,3 @@
+node_modules/
+.wrangler/
+.dev.vars