Add proper lifecycle and superseding support for Architectural Decision Records

server/src/handlers/meta.rs

@@ -25,6 +25,17 @@ impl McpTool for LogDecisionHandler {
         let mut final_id = String::new();
 
         state.adrs.modify(|adrs| {
+            if let Some(superseded_id) = &req.supersedes {
+                for old_adr in adrs.iter_mut() {
+                    if old_adr.id == *superseded_id {
+                        old_adr.status = "superseded".to_string();
+                        // Re-index the modified old ADR
+                        drop(idx.index_adr(old_adr));
+                        break;
+                    }
+                }
+            }
+
             final_id = format!("ADR-{:04}", adrs.len() + 1);
             let a = Adr {
                 id: final_id.clone(),
@@ -32,6 +43,8 @@ impl McpTool for LogDecisionHandler {
                 context: req.context,
                 decision: req.decision,
                 consequence: req.consequence,
+                status: "accepted".to_string(),
+                supersedes: req.supersedes,
                 timestamp: crate::handlers::utils::now_secs(),
             };