fix: all imports → relative (from .xxx) — no stdlib site conflict

site/routes/pipeline_bp.py

@@ -1,10 +1,10 @@
 """Pipeline blueprint — SSE-сравнение + classify."""
 import json, re, os, threading
 from flask import Blueprint, request, jsonify, Response, stream_with_context
-from site.services.process import run_pipeline
-from site.services.classify import classify_batch
-from site.llm_prompt import build_prompt
-from site.db import documents
+from .services.process import run_pipeline
+from .services.classify import classify_batch
+from .llm_prompt import build_prompt
+from .db import documents
 
 pipeline_bp = Blueprint("pipeline", __name__)