fix: clarify AI generation failure retry states

app/ai.py

@@ -222,6 +222,28 @@ def _notify_retry(callback, step, attempt, attempts, exc, model):
     except Exception:
         pass
 
+
+def _task_attempt_count(task, field):
+    try:
+        return int(getattr(task, field, 0) or 0)
+    except (TypeError, ValueError):
+        return 0
+
+
+def is_generatable_task(task):
+    """判断任务是否能由② AI生成执行或重试。"""
+
+    stage = str(getattr(task, "stage", "") or "")
+    status = str(getattr(task, "status", "") or "")
+    if status in {"running", "skipped"}:
+        return False
+    if stage == "collected":
+        return True
+    if stage == "generated" and status == "failed":
+        return _task_attempt_count(task, "apply_attempts") == 0
+    return False
+
+
 def generate_batch(tasks, prompts, ai_cfg=None, on_progress=None, should_stop=None):
     """Generate titles first, then covers, and persist each successful task."""
 
@@ -256,7 +278,7 @@ def generate_batch(tasks, prompts, ai_cfg=None, on_progress=None, should_stop=No
     should_stop = should_stop or (lambda: False)
     eligible = [
         task for task in list(tasks)
-        if getattr(task, "stage", None) == "collected"
+        if is_generatable_task(task)
     ]
     summary = {
         "ok": True,

app/gui/models.py

@@ -275,10 +275,30 @@ class GenerateTaskTableModel(QAbstractTableModel):
         return task.account_name or task.alias or ""
 
     def _status_text(self, task):
+        if task.status == "failed":
+            return self._failed_status_text(task)
         if task.status in self.STATUS_TEXT and task.status != "pending":
             return self.STATUS_TEXT[task.status]
         return self.STAGE_TEXT.get(task.stage, task.stage)
 
+    def _failed_status_text(self, task):
+        collect_attempts = self._attempt_count(task, "collect_attempts")
+        generate_attempts = self._attempt_count(task, "generate_attempts")
+        apply_attempts = self._attempt_count(task, "apply_attempts")
+        if apply_attempts > 0:
+            return "更新失败"
+        if generate_attempts > 0:
+            return "生成失败"
+        if collect_attempts > 0 or getattr(task, "stage", None) == "imported":
+            return "采集失败"
+        return "失败"
+
+    def _attempt_count(self, task, field):
+        try:
+            return int(getattr(task, field, 0) or 0)
+        except (TypeError, ValueError):
+            return 0
+
     def _status_color(self, task):
         base_color = _status_base_color(getattr(task, "status", None))
         if base_color is not None:

app/gui/tabs/generate.py

@@ -470,10 +470,10 @@ class GenerateTab(QWidget):
         generate_cover = bool(self.generate_cover_checkbox.isChecked())
         tasks = [
             task for task in self.model.tasks
-            if getattr(task, "stage", None) == "collected"
+            if ai.is_generatable_task(task)
         ]
         if not tasks:
-            self._set_status("当前筛选结果没有可生成任务")
+            self._set_status("当前筛选结果没有待生成或生成失败可重试任务；请先在①导入采集完成旧数据采集")
             return
         prompt_values = {
             "title": self.title_prompt_edit.toPlainText(),
@@ -896,7 +896,7 @@ class GenerateTab(QWidget):
         if selected_status in (None, "all"):
             return True
         if selected_status == "to_generate":
-            return task.stage == "collected" and task.status in {"success", "pending"}
+            return ai.is_generatable_task(task) and task.status != "failed"
         if selected_status == "generated":
             return task.stage == "generated"
         if selected_status == "applied":

app/gui/workers.py

@@ -4,7 +4,7 @@ from __future__ import annotations
 
 from .widgets import *
 class GenerateWorker(BaseWorker):
-    """Generate titles and covers for collected tasks."""
+    """Generate titles and covers for eligible collected or failed generation tasks."""
 
     def __init__(
         self,
@@ -39,7 +39,7 @@ class GenerateWorker(BaseWorker):
         self._account_by_alias = account_by_alias
         eligible = [
             task for task in self.tasks
-            if getattr(task, "stage", None) == "collected"
+            if ai.is_generatable_task(task)
         ]
         self._eligible_total = len(eligible)
         self._task_positions = {