Rebrand Pinscope to Periscope across product and codebase.

Rename the core package to periscopex, update UI/docs/Docker/deploy defaults to periscope.michelebigi.it, and keep legacy version/storage key aliases so existing projects keep working.

Co-authored-by: Cursor <cursoragent@cursor.com>

backend/services/dedupe_findings.py

@@ -25,7 +25,7 @@ import time
 from datetime import datetime, timezone
 from typing import Awaitable, Callable
 
-from backend.pinscopex.models import Finding
+from backend.periscopex.models import Finding
 from backend.services.api_logs import ApiLogger
 from backend.services.llm import Message, TextBlock
 from backend.services.llm.factory import call_with_fallback