wip: doctor/cli/docs/api to vector db consolidation; api hardening for descriptions, tenant, and scopes; migrations and conversions of all DALs to EF v10

docs/modules/sm-remote/README.md

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+# SM Remote (SM Cipher Suite Service)
+
+> Stateless cryptographic operations microservice for Chinese national standard algorithms (SM2/SM3/SM4).
+
+## Purpose
+
+SM Remote provides Chinese national standard cryptographic algorithms (SM2 signing/verification, SM3 hashing, SM4 encryption/decryption) as a stateless microservice for regional compliance requirements. It enables Stella Ops deployments to satisfy GB/T standards by offering both soft-provider (BouncyCastle) and optional HSM/remote provider modes for production key management.
+
+## Quick Links
+
+- [Architecture](./architecture.md)
+
+## Status
+
+| Attribute    | Value                |
+|-------------|----------------------|
+| **Maturity** | Production           |
+| **Source**   | `src/SmRemote/`      |
+
+## Key Features
+
+- SM2 digital signatures (P-256v1 curve)
+- SM3 cryptographic hashing
+- SM4-ECB encryption with PKCS7 padding
+- Ephemeral key management
+- Soft provider and optional HSM/remote provider modes
+
+## Dependencies
+
+### Upstream
+
+- Authority - authentication for service-to-service calls
+- Cryptography - shared cryptographic primitives and abstractions
+
+### Downstream
+
+- Signer - SM cipher operations for signing workflows
+- AirGap - regional crypto support in offline environments