Phase 1: Fix all critical release blockers (B1-B10)

B1: Remove duplicate get_redis() — singleton no longer overwritten
B2: Plugin routes now enforce activation status via require_active_plugin()
B3: Fix UploadFile ForwardRef error — remove functools.wraps from wrap_plugin_route
B4: DMS upload uses true streaming via save_stream() instead of RAM accumulation
B5: Worker on_startup registers plugin event handlers + webhook dispatcher
B6: Implement send_password_reset_email job, remove raw token logging
B7: Webhook SSRF protection (IP validation, no redirects), secret removed from response
B8: RLS repair migration 0044 + separate crm_runtime DB user (NOSUPERUSER, NOBYPASSRLS)
B9: Fix .env.docker.example AUTH_SECRET → SECRET_KEY
B10: Remove Redis default password, remove exposed DB/Redis ports

Also: add frontend_url to config, add SMTP settings to .env.docker.example,
update prestart.sh to use MIGRATION_DATABASE_URL for alembic.

app/models/tax.py

@@ -4,6 +4,7 @@ from __future__ import annotations
 
 import uuid
 from datetime import datetime
+from decimal import Decimal
 
 from sqlalchemy import Boolean, DateTime, Index, Numeric, String
 from sqlalchemy.dialects.postgresql import UUID as PGUUID
@@ -25,6 +26,6 @@ class TaxRate(Base, TenantMixin):
         PGUUID(as_uuid=True), primary_key=True, default=uuid.uuid4
     )
     name: Mapped[str] = mapped_column(String(100), nullable=False)
-    rate: Mapped[float] = mapped_column(Numeric(5, 2), nullable=False)
+    rate: Mapped[Decimal] = mapped_column(Numeric(5, 2), nullable=False)
     is_default: Mapped[bool] = mapped_column(Boolean, nullable=False, default=False)
     country: Mapped[str | None] = mapped_column(String(2), nullable=True)