feat(publish): add baijiahao and jianshu desktop adapters

Wires up Baijiahao (百家号) and Jianshu (简书) as first-class desktop
publish targets, with risk-control prompts surfaced in the runtime
controller and a normalized error message in publish records. Adds
external-link buttons in the publish management table, an asset
format conversion endpoint for cover image compatibility, and
reorders publish-status display priority so failures take precedence
over partial successes.

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

apps/desktop-client/src/main/platform-auth-adapters.ts

@@ -101,6 +101,20 @@ function classifyWenxinFailure(input: PlatformFailureInput): PlatformFailureClas
   return classifyFailure(input);
 }
 
+function classifyBaijiahaoFailure(input: PlatformFailureInput): PlatformFailureClassification {
+  const code = typeof input.error?.code === "string" ? input.error.code : "";
+  if (code === "baijiahao_challenge_required") {
+    return "challenge";
+  }
+  if (code === "baijiahao_not_logged_in" || code === "baijiahao_token_missing") {
+    return "auth_failure";
+  }
+  if (code.startsWith("baijiahao_")) {
+    return "ok";
+  }
+  return classifyFailure(input);
+}
+
 const genericAdapter: PlatformAdapter = {
   async probe(account, partition) {
     return await probePublishAccountSession(account, partition);
@@ -131,6 +145,16 @@ const wenxinAdapter: PlatformAdapter = {
   classifyFailure: classifyWenxinFailure,
 };
 
+const baijiahaoAdapter: PlatformAdapter = {
+  async probe(account, partition) {
+    return await probePublishAccountSession(account, partition);
+  },
+  async silentRefresh(account, partition) {
+    return await silentRefreshPublishAccountSession(account, partition);
+  },
+  classifyFailure: classifyBaijiahaoFailure,
+};
+
 const adapterRegistry = new Map<string, PlatformAdapter>(
   [
     ...aiPlatformCatalog.map((platform) => platform.id),
@@ -153,6 +177,8 @@ const adapterRegistry = new Map<string, PlatformAdapter>(
       ? doubaoAdapter
       : platform === "wenxin"
         ? wenxinAdapter
+        : platform === "baijiahao"
+          ? baijiahaoAdapter
         : genericAdapter,
   ]),
 );