chore: apply cargo fmt across workspace and update docs

- Run cargo fmt on all Rust crates for consistent formatting
- Update CLAUDE.md with WASM plugin commands and dev.ps1 instructions
- Update wiki: add WASM plugin architecture, rewrite dev environment docs
- Minor frontend cleanup (unused imports)

apps/web/src/pages/workflow/InstanceMonitor.tsx

@@ -86,7 +86,7 @@ export default function InstanceMonitor() {
       title: '确认挂起',
       content: '确定要挂起该流程实例吗？挂起后可通过"恢复"按钮继续执行。',
       okText: '确定挂起',
-      okType: 'warning',
+      okType: 'default',
       cancelText: '取消',
       onOk: async () => {
         try {

apps/web/src/pages/workflow/ProcessDesigner.tsx

@@ -162,7 +162,7 @@ export default function ProcessDesigner({ definitionId, onSave }: ProcessDesigne
       const flowNodes: NodeDef[] = nodes.map((n) => ({
         id: n.id,
         type: (n.data.nodeType as NodeDef['type']) || 'UserTask',
-        name: n.data.name || String(n.data.label),
+        name: String(n.data.name || n.data.label || ''),
         position: { x: Math.round(n.position.x), y: Math.round(n.position.y) },
       }));
       const flowEdges: EdgeDef[] = edges.map((e) => ({
@@ -220,7 +220,7 @@ export default function ProcessDesigner({ definitionId, onSave }: ProcessDesigne
             <p style={{ fontWeight: 500, margin: '0 0 8px', fontSize: 12 }}>节点属性</p>
             <Input
               size="small"
-              value={selectedNode.data.name || ''}
+              value={String(selectedNode.data.name || '')}
               onChange={(e) => handleUpdateNodeName(e.target.value)}
               placeholder="节点名称"
               style={{ marginBottom: 8 }}