Stop automatic AI retry on failed posts

PROJECT.md

@@ -786,10 +786,15 @@ AI получает JSON-массив:
 
 - `status='storage_ready'`
 - `qualification_status='accepted'`
-- `rewrite_status is NULL/pending/failed`
+- `rewrite_status is NULL/pending`
 
 И переписать их в короткую публикацию для Telegram/VK-канала.
 
+Важно: автоматический AI writer не должен забирать `rewrite_status='failed'`.
+2026-07-30 один пост (`id=2348`) был платно отправлен в Sonnet 4.6 983 раза,
+потому что failed снова попадал в claim и цикл сразу продолжал работу. Failed
+посты нужно возвращать в `pending` только явным ручным действием.
+
 ### 10.2. Вход в модель
 
 AI получает JSON-объект:

STATE.md

@@ -1,6 +1,6 @@
 # N8 Parser: current state
 
-Last updated: 2026-07-29
+Last updated: 2026-07-30
 
 This file is the short handoff state for future Codex threads. Read this first before touching the project, so the whole chat history does not need to be carried forward.
 
@@ -102,6 +102,7 @@ As of 2026-07-29:
 
 - Current live writer model setting checked on 2026-07-29: `ai_writer_model = anthropic/claude-sonnet-4-6`.
 - Sonnet 4.6 can return `rewrites` as a JSON string instead of a list. `validate_rewrites()` in `src/vk_parser_app/workers/ai_writer.py` now parses stringified `rewrites` before validation.
+- 2026-07-30 incident: post `2348` was retried 983 times by AI writer because automatic claim included `rewrite_status='failed'`; estimated internal cost was `$16.465977`. Live setting `ai_writer_enabled` was switched to `false` to stop spend. Automatic AI qualifier/writer claims must not include `failed`; failed posts require an explicit manual reset to `pending`.
 
 ## Prompt Architecture
 

src/vk_parser_app/workers/ai_qualifier.py

@@ -150,7 +150,7 @@ class AIQualifierWorker:
                     SELECT COUNT(*)
                     FROM raw_posts
                     WHERE status='storage_ready'
-                      AND COALESCE(qualification_status, 'pending') IN ('pending', 'failed')
+                      AND COALESCE(qualification_status, 'pending') = 'pending'
                       AND EXISTS (
                         SELECT 1
                         FROM raw_post_media m
@@ -178,7 +178,7 @@ class AIQualifierWorker:
                       SELECT id
                       FROM raw_posts
                       WHERE status='storage_ready'
-                        AND COALESCE(qualification_status, 'pending') IN ('pending', 'failed')
+                        AND COALESCE(qualification_status, 'pending') = 'pending'
                         AND EXISTS (
                           SELECT 1
                           FROM raw_post_media m

src/vk_parser_app/workers/ai_writer.py

@@ -234,7 +234,7 @@ class AIWriterWorker:
                     FROM raw_posts
                     WHERE status='storage_ready'
                       AND qualification_status='accepted'
-                      AND COALESCE(rewrite_status, 'pending') IN ('pending', 'failed')
+                      AND COALESCE(rewrite_status, 'pending') = 'pending'
                       AND EXISTS (
                         SELECT 1
                         FROM raw_post_media m
@@ -263,7 +263,7 @@ class AIWriterWorker:
                       FROM raw_posts
                       WHERE status='storage_ready'
                         AND qualification_status='accepted'
-                        AND COALESCE(rewrite_status, 'pending') IN ('pending', 'failed')
+                        AND COALESCE(rewrite_status, 'pending') = 'pending'
                         AND EXISTS (
                           SELECT 1
                           FROM raw_post_media m