feat(dashboard): extract inline script to standalone dashboard.ts/js, add UI build/check recipes, and add route unit tests

server/src/handlers/meta.rs

@@ -2028,10 +2028,7 @@ mod tests {
 
     #[tokio::test]
     async fn test_all_meta_handlers_comprehensive() {
-        use crate::handlers::tasks::{
-            AddMilestoneHandler, ListMilestonesHandler, SetAcceptanceCriteriaHandler,
-            UpdateMilestoneHandler, VerifyAcceptanceCriteriaHandler,
-        };
+        use crate::handlers::tasks::{MilestonesHandler, TasksHandler};
         use crate::handlers::graph::SweepGraphHealthHandler;
         use crate::handlers::git::QueryGitDiffsHandler;
 
@@ -2116,10 +2113,11 @@ mod tests {
         assert!(q_hyp_res.contains("Caching improves response speed"));
 
         // AddMilestone & UpdateMilestone & ListMilestones
-        let add_ms = AddMilestoneHandler;
-        let ms_res = add_ms
+        let handler_ms = MilestonesHandler;
+        let ms_res = handler_ms
             .execute(
                 serde_json::json!({
+                    "action": "add",
                     "title": "v1.0 Release",
                     "description": "First major release"
                 }),
@@ -2130,10 +2128,10 @@ mod tests {
         assert!(ms_res.contains("Milestone added"));
 
         let ms_id = state.project.milestones.read_with(|ms| ms[0].id.clone());
-        let upd_ms = UpdateMilestoneHandler;
-        let upd_ms_res = upd_ms
+        let upd_ms_res = handler_ms
             .execute(
                 serde_json::json!({
+                    "action": "update",
                     "id": ms_id,
                     "status": "completed"
                 }),
@@ -2142,10 +2140,7 @@ mod tests {
             .await;
         assert!(upd_ms_res.is_ok());
 
-
-
-        let list_ms = ListMilestonesHandler;
-        let list_ms_res = list_ms.execute(serde_json::json!({}), state.clone()).await.unwrap();
+        let list_ms_res = handler_ms.execute(serde_json::json!({"action": "list"}), state.clone()).await.unwrap();
         assert!(list_ms_res.contains("v1.0 Release"));
 
         // SetAcceptanceCriteria & VerifyAcceptanceCriteria
@@ -2164,11 +2159,12 @@ mod tests {
         };
         state.project.tasks.modify(|t| t.push(task));
 
-        let set_ac = SetAcceptanceCriteriaHandler;
-        let set_ac_res = set_ac
+        let handler_tasks = TasksHandler;
+        let set_ac_res = handler_tasks
             .execute(
                 serde_json::json!({
-                    "task_title": "AC Task",
+                    "action": "set_criteria",
+                    "id": "t_ac_1",
                     "criteria": ["Code compiles cleanly", "Tests pass"]
                 }),
                 state.clone(),
@@ -2177,12 +2173,11 @@ mod tests {
             .unwrap();
         assert!(set_ac_res.contains("Acceptance criteria set successfully."));
 
-        let ver_ac = VerifyAcceptanceCriteriaHandler;
-        let ver_ac_res = ver_ac
+        let ver_ac_res = handler_tasks
             .execute(
                 serde_json::json!({
-                    "task_id": "t_ac_1",
-                    "criteria": "Code compiles cleanly",
+                    "action": "verify",
+                    "id": "t_ac_1",
                     "proof": "cargo test passed"
                 }),
                 state.clone(),