chore: add @reserved annotations to 5 butler Tauri commands

These pain_aggregator functions have no frontend UI yet.

desktop/src-tauri/src/intelligence/pain_aggregator.rs

@@ -358,12 +358,14 @@ fn solution_store() -> Arc<SolutionGenerator> {
 }
 
 /// List all pain points for an agent.
+// @reserved: no frontend UI yet
 #[tauri::command]
 pub async fn butler_list_pain_points(agent_id: String) -> std::result::Result<Vec<PainPoint>, String> {
     Ok(pain_store().list_pain_points(&agent_id).await)
 }
 
 /// Record a new pain point from conversation analysis.
+// @reserved: no frontend UI yet
 #[tauri::command]
 pub async fn butler_record_pain_point(
     agent_id: String,
@@ -384,6 +386,7 @@ pub async fn butler_record_pain_point(
 }
 
 /// List all proposals for an agent.
+// @reserved: no frontend UI yet
 #[tauri::command]
 pub async fn butler_list_proposals(agent_id: String) -> std::result::Result<Vec<Proposal>, String> {
     let store = pain_store();
@@ -398,6 +401,7 @@ pub async fn butler_list_proposals(agent_id: String) -> std::result::Result<Vec<
 }
 
 /// Generate a solution for a high-confidence pain point.
+// @reserved: no frontend UI yet
 #[tauri::command]
 pub async fn butler_generate_solution(pain_id: String) -> std::result::Result<Proposal, String> {
     let store = pain_store();
@@ -421,6 +425,7 @@ pub async fn butler_generate_solution(pain_id: String) -> std::result::Result<Pr
 }
 
 /// Update the status of a proposal.
+// @reserved: no frontend UI yet
 #[tauri::command]
 pub async fn butler_update_proposal_status(
     proposal_id: String,