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backend/requirements.txt

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+fastapi>=0.116
+uvicorn[standard]>=0.35
+sqlalchemy[asyncio]>=2.0
+asyncpg>=0.30
+pymongo>=4.13
+pydantic-settings>=2.10
+email-validator>=2.2
+# Argon2id password hashing; intentionally avoids bcrypt backend/version coupling.
+pwdlib[argon2]>=0.3,<1.0
+pyjwt>=2.10
+aiosmtplib>=4.0
+dkimpy>=1.1
+cryptography>=44.0
+aiosmtpd>=1.4.6
+google-cloud-storage>=3.0
+google-crc32c>=1.7
+dnspython>=2.7
+pytest>=8.0
+pytest-asyncio>=0.25