fixed injection watcher

backend/app/chat/history.py

@@ -0,0 +1,71 @@
+from typing import Any
+
+
+def _tool_call_ids(tool_calls: list[dict[str, Any]]) -> list[str]:
+    return [tc.get("id", "") for tc in tool_calls if tc.get("id")]
+
+
+def sanitize_openai_messages(messages: list[dict[str, Any]]) -> list[dict[str, Any]]:
+    """Убирает битые tool-цепочки и подряд идущих assistant без user между ними."""
+    if not messages:
+        return messages
+
+    system = messages[0] if messages[0].get("role") == "system" else None
+    rest = messages[1:] if system else list(messages)
+
+    cleaned: list[dict[str, Any]] = []
+    i = 0
+    while i < len(rest):
+        msg = rest[i]
+        role = msg.get("role")
+
+        if role == "assistant" and msg.get("tool_calls"):
+            tool_calls = msg["tool_calls"]
+            needed_ids = set(_tool_call_ids(tool_calls))
+            if not needed_ids:
+                i += 1
+                continue
+
+            block = [msg]
+            i += 1
+            found_ids: set[str] = set()
+            while i < len(rest) and rest[i].get("role") == "tool":
+                tool_id = rest[i].get("tool_call_id", "")
+                if tool_id in needed_ids:
+                    block.append(rest[i])
+                    found_ids.add(tool_id)
+                i += 1
+
+            if found_ids == needed_ids:
+                cleaned.extend(block)
+            continue
+
+        if role == "tool":
+            # осиротевший tool без assistant tool_calls
+            i += 1
+            continue
+
+        if role == "assistant" and cleaned and cleaned[-1].get("role") == "assistant":
+            # два assistant подряд ломают API (старый баг pomodoro)
+            i += 1
+            continue
+
+        cleaned.append(msg)
+        i += 1
+
+    if system:
+        return [system, *cleaned]
+    return cleaned
+
+
+def strip_historical_reasoning(messages: list[dict[str, Any]]) -> list[dict[str, Any]]:
+    """Reasoning из БД часто неполный — для старых сообщений убираем."""
+    result: list[dict[str, Any]] = []
+    for msg in messages:
+        entry = dict(msg)
+        if entry.get("role") == "assistant":
+            entry.pop("reasoning", None)
+            entry.pop("reasoning_content", None)
+            entry.pop("reasoning_details", None)
+        result.append(entry)
+    return result