refactor: Enforce strict typed JsonSchema for all MCP tools

server/src/models.rs

@@ -1,5 +1,6 @@
 use serde::{Deserialize, Serialize};
 use std::collections::HashMap;
+use schemars::JsonSchema;
 
 #[derive(Debug, Clone, Serialize, Deserialize, Default)]
 pub struct CodeChange {
@@ -17,7 +18,7 @@ pub struct StickyNote {
 pub fn default_namespace() -> String {
     "global".to_string()
 }
-#[derive(Debug, Clone, Serialize, Deserialize)]
+#[derive(Debug, Clone, Serialize, Deserialize, JsonSchema)]
 pub struct Entity {
     pub name: String,
     #[serde(rename = "entityType")]
@@ -29,7 +30,7 @@ pub struct Entity {
     #[serde(default)]
     pub git_branch: Option<String>,
 }
-#[derive(Debug, Clone, Serialize, Deserialize, PartialEq, Eq, Hash)]
+#[derive(Debug, Clone, Serialize, Deserialize, PartialEq, Eq, Hash, JsonSchema)]
 pub struct Relation {
     pub from: String,
     pub to: String,