feat(security): implement safe guest auth flow and harden request_jwt

- Patched request_jwt to strip privileged IDs when signing with public keys
- Updated AccountContext and V3 dependencies to preserve JWT payloads for guests
- Whitelisted Archive, Post, Event, and other core objects for public read access
- Added 'default_qry_str' to Event searchable fields
- Added test_e2e_jwt_guest_auth.py for security verification

app/object_definitions/other.py

@@ -102,6 +102,7 @@ other_obj_li = {
         'table_name': 'v_archive_content',
         'tbl_name_update': 'archive_content',
         'base_name': Archive_Content_Base,
+        'public_read': True,
         # V3 Search Security:
         'searchable_fields': [
             'archive_content_id_random', 'account_id_random', 'archive_id_random',
@@ -122,6 +123,7 @@ other_obj_li = {
         'table_name': 'v_hosted_file',
         'tbl_name_update': 'hosted_file',
         'base_name': Hosted_File_Base,
+        'public_read': True,
         'exp_default': [
             'hosted_file_id_random',
             'hash_sha256',