refactor: migrate vendor APIs to token-based context and consolidate architecture

## Vendor-in-Token Architecture (Complete Migration)
- Migrate all vendor API endpoints from require_vendor_context() to token_vendor_id
- Update permission dependencies to extract vendor from JWT token
- Add vendor exceptions: VendorAccessDeniedException, VendorOwnerOnlyException,
  InsufficientVendorPermissionsException
- Shop endpoints retain require_vendor_context() for URL-based detection
- Add AUTH-004 architecture rule enforcing vendor context patterns
- Fix marketplace router missing /marketplace prefix

## Exception Pattern Fixes (API-003/API-004)
- Services raise domain exceptions, endpoints let them bubble up
- Add code_quality and content_page exception modules
- Move business logic from endpoints to services (admin, auth, content_page)
- Fix exception handling in admin, shop, and vendor endpoints

## Tailwind CSS Consolidation
- Consolidate CSS to per-area files (admin, vendor, shop, platform)
- Remove shared/cdn-fallback.html and shared/css/tailwind.min.css
- Update all templates to use area-specific Tailwind output files
- Remove Node.js config (package.json, postcss.config.js, tailwind.config.js)

## Documentation & Cleanup
- Update vendor-in-token-architecture.md with completed migration status
- Update architecture-rules.md with new rules
- Move migration docs to docs/development/migration/
- Remove duplicate/obsolete documentation files
- Merge pytest.ini settings into pyproject.toml

🤖 Generated with [Claude Code](https://claude.com/claude-code)

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

app/exceptions/__init__.py

@@ -14,7 +14,9 @@ from .admin import (
     CannotModifySelfException,
     ConfirmationRequiredException,
     InvalidAdminActionException,
+    UserCannotBeDeletedException,
     UserNotFoundException,
+    UserRoleChangeException,
     UserStatusChangeException,
     VendorVerificationException,
 )
@@ -44,6 +46,17 @@ from .base import (
     WizamartException,
 )
 
+# Code quality exceptions
+from .code_quality import (
+    InvalidViolationStatusException,
+    ScanExecutionException,
+    ScanNotFoundException,
+    ScanParseException,
+    ScanTimeoutException,
+    ViolationNotFoundException,
+    ViolationOperationException,
+)
+
 # Cart exceptions
 from .cart import (
     CartItemNotFoundException,
@@ -155,13 +168,16 @@ from .team import (
 
 # Vendor exceptions
 from .vendor import (
+    InsufficientVendorPermissionsException,
     InvalidVendorDataException,
     MaxVendorsReachedException,
     UnauthorizedVendorAccessException,
+    VendorAccessDeniedException,
     VendorAlreadyExistsException,
     VendorNotActiveException,
     VendorNotFoundException,
     VendorNotVerifiedException,
+    VendorOwnerOnlyException,
     VendorValidationException,
 )
 
@@ -245,13 +261,16 @@ __all__ = [
     "InvalidQuantityException",
     "LocationNotFoundException",
     # Vendor exceptions
-    "VendorNotFoundException",
-    "VendorAlreadyExistsException",
-    "VendorNotActiveException",
-    "VendorNotVerifiedException",
-    "UnauthorizedVendorAccessException",
+    "InsufficientVendorPermissionsException",
     "InvalidVendorDataException",
     "MaxVendorsReachedException",
+    "UnauthorizedVendorAccessException",
+    "VendorAccessDeniedException",
+    "VendorAlreadyExistsException",
+    "VendorNotActiveException",
+    "VendorNotFoundException",
+    "VendorNotVerifiedException",
+    "VendorOwnerOnlyException",
     "VendorValidationException",
     # Vendor Domain
     "VendorDomainNotFoundException",
@@ -334,4 +353,12 @@ __all__ = [
     "InvalidAdminActionException",
     "BulkOperationException",
     "ConfirmationRequiredException",
+    # Code quality exceptions
+    "ViolationNotFoundException",
+    "ScanNotFoundException",
+    "ScanExecutionException",
+    "ScanTimeoutException",
+    "ScanParseException",
+    "ViolationOperationException",
+    "InvalidViolationStatusException",
 ]