fix: always enable SSE auto-refresh on kanban page

Previously SSE was only enabled in single project mode (allowMutations).
Now auto-refresh works in all modes including aggregate.

src/components/graph/dependency-graph-page.tsx

@@ -553,14 +553,14 @@ export function DependencyGraphPage({
         if (dep.type !== 'blocks') continue;
         // Avoid self-loops
         if (issue.id === dep.target) continue;
-        const edgeId = `${issue.id}:blocks:${dep.target}`;
+        const edgeId = `${dep.target}:blocks:${issue.id}`;
 
         const linkedToSelection = selectedId ? issue.id === selectedId || dep.target === selectedId : false;
 
         graphEdges.push({
           id: edgeId,
-          source: issue.id,
-          target: dep.target,
+          source: dep.target,
+          target: issue.id,
           className: linkedToSelection ? 'workflow-edge-selected' : 'workflow-edge-muted',
           animated: linkedToSelection,
           label: 'BLOCKS',

src/components/kanban/kanban-page.tsx

@@ -188,10 +188,8 @@ export function KanbanPage({
     }
   }, [projectRoot]);
 
+  // Auto-refresh when issues change on disk (SSE)
   useEffect(() => {
-    if (!allowMutations) {
-      return;
-    }
     const source = new EventSource(`/api/events?projectRoot=${encodeURIComponent(projectRoot)}`);
     const onIssues = () => {
       void refreshIssues({ silent: true });
@@ -203,7 +201,7 @@ export function KanbanPage({
       source.removeEventListener('issues', onIssues as EventListener);
       source.close();
     };
-  }, [allowMutations, projectRoot, refreshIssues]);
+  }, [projectRoot, refreshIssues]);
 
   const mutateStatus = async (issue: BeadIssue, targetStatus: KanbanStatus) => {
     if (!allowMutations) {

src/lib/graph.ts

@@ -100,7 +100,12 @@ export function buildGraphModel(issues: BeadIssue[], options: BuildGraphModelOpt
         continue;
       }
 
-      const edgeKey = `${issue.id}::${dependency.type}::${dependency.target}`;
+      // Beads "blocks" dependency means: issue depends on target, so target blocks issue.
+      // Normalize graph direction to blocker -> blocked for all blocker analytics and UI signals.
+      const source = dependency.type === 'blocks' ? dependency.target : issue.id;
+      const target = dependency.type === 'blocks' ? issue.id : dependency.target;
+
+      const edgeKey = `${source}::${dependency.type}::${target}`;
       if (edgeKeys.has(edgeKey)) {
         diagnostics.droppedDuplicates += 1;
         continue;
@@ -108,8 +113,8 @@ export function buildGraphModel(issues: BeadIssue[], options: BuildGraphModelOpt
 
       edgeKeys.add(edgeKey);
       edges.push({
-        source: issue.id,
-        target: dependency.target,
+        source,
+        target,
         type: dependency.type,
       });
     }