revert: app/ → site/ (drhider proves site/ works fine)

site/app.py

@@ -0,0 +1,64 @@
+"""contracts-flask v2.0 — полный перенос с ВМ на Flask.
+Больше никаких прокси на contracts.kube5s.ru — всё локально.
+"""
+from flask import Flask
+from site.config import VERSION, MAX_CONTENT_LENGTH
+from site.routes import register_routes
+
+
+def create_app():
+    app = Flask(__name__)
+    app.config["VERSION"] = VERSION
+    app.config["MAX_CONTENT_LENGTH"] = MAX_CONTENT_LENGTH
+
+    # DB auto-seed — schema migration + seed prompts + crash recovery
+    _init_db()
+
+    # Регистрация всех blueprint'ов
+    register_routes(app)
+
+    # no_cache на все ответы
+    @app.after_request
+    def no_cache(response):
+        response.headers["Cache-Control"] = "no-cache, no-store, must-revalidate"
+        response.headers["Pragma"] = "no-cache"
+        response.headers["Expires"] = "0"
+        return response
+
+    return app
+
+
+def _init_db():
+    """Schema migration + recovery: сброс застрявших classify."""
+    try:
+        from site.db.connection import execute
+
+        for sql in [
+            "ALTER TABLE documents ADD COLUMN IF NOT EXISTS classify_raw text",
+            "ALTER TABLE documents ADD COLUMN IF NOT EXISTS classify_input text",
+            "ALTER TABLE documents ADD COLUMN IF NOT EXISTS zip_source text",
+            "ALTER TABLE documents ADD COLUMN IF NOT EXISTS content_hash text",
+            "ALTER TABLE documents ADD COLUMN IF NOT EXISTS batch_id uuid",
+            "ALTER TABLE documents ADD COLUMN IF NOT EXISTS classify_status text DEFAULT 'pending'",
+            "ALTER TABLE documents ALTER COLUMN classify_status SET DEFAULT 'pending'",
+            "ALTER TABLE documents ADD COLUMN IF NOT EXISTS doc_type text",
+            "ALTER TABLE documents ADD COLUMN IF NOT EXISTS own_number text",
+            "ALTER TABLE documents ADD COLUMN IF NOT EXISTS parent_number text",
+            "ALTER TABLE documents ADD COLUMN IF NOT EXISTS doc_date date",
+            "ALTER TABLE documents ADD COLUMN IF NOT EXISTS counterparty text",
+        ]:
+            execute(sql)
+
+        from site.db import prompts as db_prompts
+        db_prompts.seed_defaults()
+
+        # Crash recovery: сбросить застрявшие classify
+        execute(
+            "UPDATE documents SET classify_status='pending', error_message=NULL "
+            "WHERE classify_status='processing'"
+        )
+    except Exception:
+        pass  # БД недоступна при старте — не фатально
+
+
+app = create_app()