fix(kugetsu): destroy --base now also deletes PM agent session

When destroying base session, we now also delete the PM agent session
and all issue session files. This ensures clean slate on re-init.

skills/kugetsu/scripts/kugetsu

@@ -1123,6 +1123,11 @@ EOF
         echo "Created pm-agent env file: $ENV_DIR/pm-agent.env"
     fi
 
+    if [ -d "$LOGS_DIR" ]; then
+        echo "Cleaning up old logs..."
+        rm -rf "$LOGS_DIR"/*.log 2>/dev/null || true
+    fi
+
     local existing_base=$(get_base_session_id)
     local existing_pm=$(get_pm_agent_session_id)
     
@@ -1597,19 +1602,21 @@ cmd_destroy() {
     if [ "$target" = "base" ]; then
         if [ "$force" = true ]; then
             local base_session_id=$(get_base_session_id)
+            local pm_agent_session_id=$(get_pm_agent_session_id)
             rm -f "$SESSIONS_DIR/base.json"
-            local pm_agent=$(get_pm_agent_session_id)
+            rm -f "$SESSIONS_DIR/pm-agent.json"
-            if [ -n "$pm_agent" ] && [ "$pm_agent" != "null" ]; then
+            rm -f "$SESSIONS_DIR/issue-"*.json 2>/dev/null || true
-                rm -f "$SESSIONS_DIR/pm-agent.json"
+            echo '{"base": null, "pm_agent": null, "issues": {}}' > "$INDEX_FILE"
-                echo '{"base": null, "pm_agent": null, "issues": {}}' > "$INDEX_FILE"
+            
-            else
-                echo '{"base": null, "pm_agent": null, "issues": {}}' > "$INDEX_FILE"
-            fi
             if [ -n "$base_session_id" ] && [ "$base_session_id" != "null" ]; then
-                echo "Deleting opencode session: $base_session_id"
+                echo "Deleting base session: $base_session_id"
-                opencode session delete "$base_session_id" 2>/dev/null || echo "Warning: Could not delete session from opencode (may already be deleted)"
+                opencode session delete "$base_session_id" 2>/dev/null || echo "Warning: Could not delete base session"
             fi
-            echo "Base session destroyed"
+            if [ -n "$pm_agent_session_id" ] && [ "$pm_agent_session_id" != "null" ]; then
+                echo "Deleting PM agent session: $pm_agent_session_id"
+                opencode session delete "$pm_agent_session_id" 2>/dev/null || echo "Warning: Could not delete PM agent session"
+            fi
+            echo "Base and PM agent sessions destroyed"
         else
             echo "Error: destroying base session requires --base -y" >&2
             exit 1