chore(media-upload): remove Postimages provider

Postimages cannot support WebView automation (site blocks automated uploads).
Imgur works reliably. Keep only Catbox and Imgur as supported providers.

electron/media-upload-automation.js

@@ -5,7 +5,7 @@
  *
  * Diagnostics (parity with Android): selector match/timeout info included in errors
  * for debugging. Poll interval 500ms, timeout per recipe matches Android where
- * providers overlap (imgur/postimages: 45s).
+ * providers overlap (imgur: 45s).
  */
 import { BrowserWindow } from 'electron';
 import { MEDIA_UPLOAD_RECIPES } from './media-upload-recipes.js';
@@ -29,7 +29,7 @@ export function isDirectMediaUrl(url) {
 /**
  * Run automated upload for a provider.
  * @param {Object} options
- * @param {string} options.provider - Provider id (catbox, imgur, postimages)
+ * @param {string} options.provider - Provider id (catbox, imgur)
  * @param {string} options.filePath - Absolute path to the file to upload
  * @returns {Promise<{ url: string; provider: string }>}
  * @throws {Error} On missing recipe, blocked indicators, timeout, or invalid URL

electron/media-upload-automation.test.js

@@ -29,7 +29,6 @@ describe('media-upload-automation', () => {
     it('returns false for non-direct URLs (guards against non-media pages)', () => {
       expect(isDirectMediaUrl('https://imgur.com/abc123')).toBe(false);
       expect(isDirectMediaUrl('https://imgur.com/upload')).toBe(false);
-      expect(isDirectMediaUrl('https://postimages.org')).toBe(false);
       expect(isDirectMediaUrl('')).toBe(false);
     });
 
@@ -41,12 +40,9 @@ describe('media-upload-automation', () => {
 });
 
 describe('media-upload-automation + recipes integration', () => {
-  it('imgur and postimages success extractors target direct-media domains', () => {
+  it('imgur success extractor targets direct-media domain', () => {
     const imgurSelectors = MEDIA_UPLOAD_RECIPES.imgur.successExtractor.selectorCandidates;
     expect(imgurSelectors.some((s) => s.includes('i.imgur.com'))).toBe(true);
-
-    const postimagesSelectors = MEDIA_UPLOAD_RECIPES.postimages.successExtractor.selectorCandidates;
-    expect(postimagesSelectors.some((s) => s.includes('postimg') || s.includes('i.postimg'))).toBe(true);
   });
 
   it('all providers have fallback selector chains for file input and submit', () => {

electron/media-upload-recipes.js

@@ -4,13 +4,12 @@
  * Selectors are candidate-based: try each until one matches. Fail fast on blocked indicators.
  *
  * Android vs Electron differences (documented to prevent drift):
- * - Android (MediaUploadRecipes.java): imgur/postimages only; no catbox (uses different flow).
- *   Uses WebChromeClient file chooser interception; trigger JS clicks file input.
- * - Electron: catbox/imgur/postimages. Uses CDP DOM.setFileInputFiles + submit button click.
+ * - Android (MediaUploadRecipes.java): imgur only; no catbox (uses different flow).
+ *   Uses DataTransfer JS injection.
+ * - Electron: catbox/imgur. Uses CDP DOM.setFileInputFiles + submit button click.
  *   Catbox: Electron-only; keep behavior unchanged.
- * - Blocked/success selectors: reconciled with Android for imgur/postimages; Electron may add
- *   extra candidates (e.g. [data-captcha], .login-form) where DOM differs.
- * - Timeouts: imgur/postimages 45s (parity); catbox 30s (Electron-only).
+ * - Blocked/success selectors: reconciled with Android for imgur.
+ * - Timeouts: imgur 45s; catbox 30s (Electron-only).
  *
  * @typedef {Object} ProviderRecipe
  * @property {string} uploadUrl - Full URL of the provider's upload page
@@ -49,18 +48,6 @@ export const MEDIA_UPLOAD_RECIPES = Object.freeze({
     blockedIndicators: Object.freeze(['#challenge', '.captcha', '[data-captcha]', '.g-recaptcha', '#recaptcha', '.login-form', '.signin', '.login']),
     timeoutMs: 45_000,
   }),
-  /* Reconciled with Android MediaUploadRecipes (postimages): file input, success extractors, blocked indicators. */
-  postimages: Object.freeze({
-    uploadUrl: 'https://postimages.org',
-    fileInputSelectorCandidates: Object.freeze(['input[type="file"]', 'input[type=file]', '#uploadFile', '.fileinput']),
-    submitSelectorCandidates: Object.freeze(['button[type="submit"]', '[type="submit"]', '.btn-upload']),
-    successExtractor: Object.freeze({
-      selectorCandidates: Object.freeze(['input[readonly][value*="postimg"]', 'a[href*="i.postimg.cc"]', '[class*="direct-link"]', 'textarea']),
-      attribute: 'value',
-    }),
-    blockedIndicators: Object.freeze(['#challenge', '.captcha', '.g-recaptcha', '#recaptcha']),
-    timeoutMs: 45_000,
-  }),
 });
 
 /**

electron/media-upload-recipes.test.js

@@ -9,7 +9,6 @@ describe('media-upload-recipes', () => {
   it('exports MEDIA_UPLOAD_RECIPES with expected providers', () => {
     expect(Object.keys(MEDIA_UPLOAD_RECIPES)).toContain('catbox');
     expect(Object.keys(MEDIA_UPLOAD_RECIPES)).toContain('imgur');
-    expect(Object.keys(MEDIA_UPLOAD_RECIPES)).toContain('postimages');
   });
 
   it('validateRecipes passes for current recipes', () => {
@@ -28,9 +27,8 @@ describe('media-upload-recipes', () => {
     }
   });
 
-  it('imgur and postimages have 45s timeout (parity with Android)', () => {
+  it('imgur has 45s timeout (parity with Android)', () => {
     expect(MEDIA_UPLOAD_RECIPES.imgur.timeoutMs).toBe(45_000);
-    expect(MEDIA_UPLOAD_RECIPES.postimages.timeoutMs).toBe(45_000);
   });
 
   it('selector fallback order: generic file input before provider-specific', () => {