feat(nn): entry–secret N:N, unique secret names, web unlink

Bump secrets-mcp to 0.3.8 (tag 0.3.7 already used).

- Junction table entry_secrets; secrets user-scoped with type
- Per-user unique secrets.name; link_secret_names on add
- Manual migrations + migrate script; MCP/tool and Web updates

Made-with: Cursor

crates/secrets-core/src/service/get_secret.rs

@@ -25,7 +25,7 @@ pub async fn get_secret_field(
 
     let field = fields
         .iter()
-        .find(|f| f.field_name == field_name)
+        .find(|f| f.name == field_name)
         .ok_or_else(|| anyhow::anyhow!("Secret field '{}' not found", field_name))?;
 
     crypto::decrypt_json(master_key, &field.encrypted)
@@ -49,7 +49,7 @@ pub async fn get_all_secrets(
     let mut map = HashMap::new();
     for f in fields {
         let decrypted = crypto::decrypt_json(master_key, &f.encrypted)?;
-        map.insert(f.field_name.clone(), decrypted);
+        map.insert(f.name.clone(), decrypted);
     }
     Ok(map)
 }
@@ -72,7 +72,7 @@ pub async fn get_secret_field_by_id(
 
     let field = fields
         .iter()
-        .find(|f| f.field_name == field_name)
+        .find(|f| f.name == field_name)
         .ok_or_else(|| anyhow::anyhow!("Secret field '{}' not found", field_name))?;
 
     crypto::decrypt_json(master_key, &field.encrypted)
@@ -98,7 +98,7 @@ pub async fn get_all_secrets_by_id(
     let mut map = HashMap::new();
     for f in fields {
         let decrypted = crypto::decrypt_json(master_key, &f.encrypted)?;
-        map.insert(f.field_name.clone(), decrypted);
+        map.insert(f.name.clone(), decrypted);
     }
     Ok(map)
 }