fix(desktop-client): treat title-length validation as definitive publish failure

Extract the definitive-failure regex into a named constant and add title
length/count validation patterns so submit-phase failures like
"标题长度应该在2-30字之间" stay non-retryable instead of being classified
as uncertain.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

apps/desktop-client/src/main/publish-result-classification.ts

@@ -2,6 +2,9 @@ import type { JsonValue } from '@geo/shared-types'
 
 import type { AdapterExecutionResult } from './adapters/base'
 
+const definitivePublishFailurePattern =
+  /(?:csrf|forbidden|\b403\b|not_logged_in|login_required|token_missing|cookie_missing|challenge_required|risk_control|captcha|验证码|滑块|人机验证|安全验证|风控|风险|参数错误|内容为空|标题.{0,12}(?:长度|字数|过长|太长|超过|不能超过)|title[_\s-]*(?:length|too[_\s-]*long|too[_\s-]*short|max)|image_fetch_failed|cover_fetch_failed|upload_failed|signature_failed)/i
+
 export function markAuthorizationFailureNonRetryable(
   error: Record<string, JsonValue>,
   category: 'ai_platform_authorization' | 'media_account_authorization',
@@ -49,9 +52,7 @@ export function isDefinitivePublishFailure(result: AdapterExecutionResult): bool
     return true
   }
 
-  return /(?:csrf|forbidden|\b403\b|not_logged_in|login_required|token_missing|cookie_missing|challenge_required|risk_control|captcha|验证码|滑块|人机验证|安全验证|风控|风险|参数错误|内容为空|image_fetch_failed|cover_fetch_failed|upload_failed|signature_failed)/i.test(
-    combined,
-  )
+  return definitivePublishFailurePattern.test(combined)
 }
 
 export function asSubmitUncertainExecution(result: AdapterExecutionResult): AdapterExecutionResult {

apps/desktop-client/src/main/runtime-controller-publish-retry.test.ts

@@ -21,6 +21,20 @@ describe('publish retry result classification', () => {
     expect(asSubmitUncertainExecution(result).status).toBe('failed')
   })
 
+  it('keeps title length validation failures definitive after submit started', () => {
+    const result: AdapterExecutionResult = {
+      status: 'failed',
+      summary: '标题长度应该在2-30字之间',
+      error: {
+        code: 'toutiaohao_publish_failed',
+        message: '标题长度应该在2-30字之间',
+      },
+    }
+
+    expect(isDefinitivePublishFailure(result)).toBe(true)
+    expect(asSubmitUncertainExecution(result).status).toBe('failed')
+  })
+
   it('marks ambiguous submit-phase publish failures as unknown', () => {
     const result: AdapterExecutionResult = {
       status: 'failed',