feat(validators): add noqa suppression support to security and performance validators

- Add centralized _is_noqa_suppressed() to BaseValidator with normalization
  (accepts both SEC001 and SEC-001 formats for ruff compatibility)
- Wire noqa support into all 21 security and 18 performance check functions
- Add ruff external config for SEC/PERF/MOD/EXC codes in pyproject.toml
- Convert all 280 Python noqa comments to dashless format (ruff-compatible)
- Add site/ to IGNORE_PATTERNS (excludes mkdocs build output)
- Suppress 152 false positive findings (test passwords, seed data, validator
  self-references, Apple Wallet SHA1, etc.)
- Security: 79 errors → 0, 60 warnings → 0
- Performance: 80 warnings → 77 (3 test script suppressions)
- Add proposal doc with noqa inventory and remaining findings recommendations

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

app/modules/customers/tests/unit/test_customer_model.py

@@ -16,7 +16,7 @@ class TestCustomerModel:
         customer = Customer(
             store_id=test_store.id,
             email="customer@example.com",
-            hashed_password="hashed_password",  # noqa: SEC-001
+            hashed_password="hashed_password",  # noqa: SEC001
             first_name="John",
             last_name="Doe",
             customer_number="CUST001",
@@ -40,7 +40,7 @@ class TestCustomerModel:
         customer = Customer(
             store_id=test_store.id,
             email="defaults@example.com",
-            hashed_password="hash",  # noqa: SEC-001
+            hashed_password="hash",  # noqa: SEC001
             customer_number="CUST_DEFAULTS",
         )
         db.add(customer)
@@ -57,7 +57,7 @@ class TestCustomerModel:
         customer = Customer(
             store_id=test_store.id,
             email="fullname@example.com",
-            hashed_password="hash",  # noqa: SEC-001
+            hashed_password="hash",  # noqa: SEC001
             customer_number="CUST_FULLNAME",
             first_name="Jane",
             last_name="Smith",
@@ -73,7 +73,7 @@ class TestCustomerModel:
         customer = Customer(
             store_id=test_store.id,
             email="noname@example.com",
-            hashed_password="hash",  # noqa: SEC-001
+            hashed_password="hash",  # noqa: SEC001
             customer_number="CUST_NONAME",
         )
         db.add(customer)
@@ -87,7 +87,7 @@ class TestCustomerModel:
         customer = Customer(
             store_id=test_store.id,
             email="optional@example.com",
-            hashed_password="hash",  # noqa: SEC-001
+            hashed_password="hash",  # noqa: SEC001
             customer_number="CUST_OPT",
             phone="+352123456789",
             preferences={"language": "en", "currency": "EUR"},
@@ -106,7 +106,7 @@ class TestCustomerModel:
         customer = Customer(
             store_id=test_store.id,
             email="relationship@example.com",
-            hashed_password="hash",  # noqa: SEC-001
+            hashed_password="hash",  # noqa: SEC001
             customer_number="CUST_REL",
         )
         db.add(customer)