feat(core): FK for user_id columns; MCP search requires user

- Add fk_entries_user_id, fk_entries_history_user_id, fk_audit_log_user_id (ON DELETE SET NULL)
- Add scripts/cleanup-orphan-user-ids.sql for pre-deploy orphan user_id cleanup
- Remove deprecated SERVER_MASTER_KEY / per-user key wrap helpers from secrets-core
- secrets-mcp: require authenticated user for secrets_search; improve body-read failure response
- Bump secrets-mcp to 0.2.1

Made-with: Cursor

crates/secrets-mcp/src/tools.rs

@@ -298,8 +298,8 @@ struct EnvMapInput {
 #[tool_router]
 impl SecretsService {
     #[tool(
-        description = "Search entries in the secrets store. Returns entries with metadata and \
-        secret field names (not values). Use secrets_get to decrypt secret values.",
+        description = "Search entries in the secrets store. Requires Bearer API key. Returns \
+        entries with metadata and secret field names (not values). Use secrets_get to decrypt secret values.",
         annotations(
             title = "Search Secrets",
             read_only_hint = true,
@@ -312,7 +312,7 @@ impl SecretsService {
         ctx: RequestContext<RoleServer>,
     ) -> Result<CallToolResult, rmcp::ErrorData> {
         let t = Instant::now();
-        let user_id = Self::user_id_from_ctx(&ctx)?;
+        let user_id = Self::require_user_id(&ctx)?;
         tracing::info!(
             tool = "secrets_search",
             ?user_id,
@@ -334,11 +334,11 @@ impl SecretsService {
                 sort: input.sort.as_deref().unwrap_or("name"),
                 limit: input.limit.unwrap_or(20),
                 offset: input.offset.unwrap_or(0),
-                user_id,
+                user_id: Some(user_id),
             },
         )
         .await
-        .map_err(|e| mcp_err_internal_logged("secrets_search", user_id, e))?;
+        .map_err(|e| mcp_err_internal_logged("secrets_search", Some(user_id), e))?;
 
         let summary = input.summary.unwrap_or(false);
         let entries: Vec<serde_json::Value> = result
@@ -849,7 +849,7 @@ impl ServerHandler for SecretsService {
             "Manage cross-device secrets and configuration securely. \
              Data is encrypted with your passphrase-derived key. \
              Include your 64-char hex key in the X-Encryption-Key header for all read/write operations. \
-             Use secrets_search to discover entries (no key needed), \
+             Use secrets_search to discover entries (Bearer token required; encryption key not needed), \
              secrets_get to decrypt secret values, \
              and secrets_add/secrets_update to write encrypted secrets."
                 .to_string(),