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>

tests/test_datasheet_excerpt_tool.py

@@ -8,9 +8,9 @@ from pathlib import Path
 import pytest
 from pypdf import PdfWriter
 
-from backend.pinscopex.models import DesignGraph
-from backend.pinscopex.utils import safe_mpn
-from backend.pinscopex.validation_tools import (
+from backend.periscopex.models import DesignGraph
+from backend.periscopex.utils import safe_mpn
+from backend.periscopex.validation_tools import (
     EXCERPT_TOPICS,
     ExcerptState,
     execute_tool,