feat: track directive goal history for intelligent re-planning (#63)

* WIP: heartbeat checkpoint

* feat: soryu-co/soryu - makima: Save previous goal on update and include history in re-planning prompt

1 files changed, 24 insertions, 21 deletions

diff --git a/makima/src/server/handlers/directives.rs b/makima/src/server/handlers/directives.rs
index 929769c..6060171 100644
--- a/makima/src/server/handlers/directives.rs
+++ b/makima/src/server/handlers/directives.rs
@@ -823,29 +823,32 @@ pub async fn update_goal(
             .into_response();
     };
 
-    match repository::update_directive_goal(pool, auth.owner_id, id, &req.goal).await {
-        Ok(Some(directive)) => {
-            // Clear non-started steps so replanning starts fresh
-            match repository::clear_pending_directive_steps(pool, id).await {
-                Ok(count) => {
-                    if count > 0 {
-                        tracing::info!(
-                            directive_id = %id,
-                            removed_steps = count,
-                            "Cleared pending steps after goal update — replanning will generate new steps"
-                        );
-                    }
-                }
-                Err(e) => {
-                    tracing::warn!(
-                        directive_id = %id,
-                        error = %e,
-                        "Failed to clear pending steps after goal update"
-                    );
-                }
+    // Save old goal to history before overwriting (best-effort)
+    match repository::get_directive_for_owner(pool, auth.owner_id, id).await {
+        Ok(Some(current)) => {
+            if let Err(e) = repository::save_directive_goal_history(pool, id, &current.goal).await
+            {
+                tracing::warn!(
+                    directive_id = %id,
+                    error = %e,
+                    "Failed to save goal history before update — continuing with goal update"
+                );
             }
-            Json(directive).into_response()
         }
+        Ok(None) => {
+            // Directive not found — update_directive_goal will handle this
+        }
+        Err(e) => {
+            tracing::warn!(
+                directive_id = %id,
+                error = %e,
+                "Failed to fetch current directive for goal history — continuing with goal update"
+            );
+        }
+    }
+
+    match repository::update_directive_goal(pool, auth.owner_id, id, &req.goal).await {
+        Ok(Some(directive)) => Json(directive).into_response(),
         Ok(None) => (
             StatusCode::NOT_FOUND,
             Json(ApiError::new("NOT_FOUND", "Directive not found")),