fix(lint): resolve all linting warnings and errors

- scene-graph: replace non-null assertion with guard
- figma-api: console.log → console.warn for notify()
- editor/nodes: replace non-null assertion with guard
- automation/server: console.log → console.debug
- mcp/stdio: proper Buffer/ArrayBuffer/Buffer[] UTF-8 decoding
- design-jsx/render: suppress no-implied-eval for Function constructor

0 warnings, 0 errors.

packages/core/src/design-jsx/render.ts

@@ -36,6 +36,7 @@ export function buildComponent(jsxString: string): () => unknown {
     code = transform(`${aliases}\nreturn function __render() { return <>${trimmed}</> }`, opts).code
   }
 
+  // eslint-disable-next-line typescript-eslint/no-implied-eval -- sucrase output must be evaluated at runtime
   return new Function('React', code)(React) as () => unknown
 }
 

packages/core/src/editor/nodes.ts

@@ -205,8 +205,8 @@ export function createNodeActions(ctx: EditorContext) {
     if (!nudgeOriginals) {
       nudgeOriginals = new Map()
       for (const id of movable) {
-        const node = ctx.graph.getNode(id)!
-        nudgeOriginals.set(id, { x: node.x, y: node.y })
+        const node = ctx.graph.getNode(id)
+        if (node) nudgeOriginals.set(id, { x: node.x, y: node.y })
       }
     }
 

packages/core/src/figma-api/index.ts

@@ -384,7 +384,7 @@ export class FigmaAPI implements NodeProxyHost {
   }
 
   notify(message: string): { cancel: () => void } {
-    if (typeof console !== 'undefined') console.log(`[figma.notify] ${message}`)
+    if (typeof console !== 'undefined') console.warn(`[figma.notify] ${message}`)
     // eslint-disable-next-line no-empty-function
     return { cancel() {} }
   }

packages/core/src/scene-graph/index.ts

@@ -811,8 +811,9 @@ export class SceneGraph {
     if (cached) return cached
 
     const node = this.getNode(id)
+    if (!node) return { x: 0, y: 0 }
 
-    const result = getAbsolutePosition(node!, this)
+    const result = getAbsolutePosition(node, this)
     this.absPosCache.set(id, result)
     return result
   }

packages/mcp/src/stdio.ts

@@ -32,7 +32,11 @@ function connect() {
 
   ws.on('message', (raw) => {
     try {
-      const msg = JSON.parse(String(raw)) as {
+      let text: string
+      if (Buffer.isBuffer(raw)) text = raw.toString('utf8')
+      else if (Array.isArray(raw)) text = Buffer.concat(raw).toString('utf8')
+      else text = Buffer.from(raw).toString('utf8')
+      const msg = JSON.parse(text) as {
         type: string
         id?: string
         token?: string

src/automation/server.ts

@@ -211,7 +211,7 @@ export function connectAutomation(getStore: () => EditorStore, authToken: string
     }
 
     ws.onopen = () => {
-      console.log('[Automation] WebSocket connected to MCP server')
+      console.debug('[Automation] WebSocket connected to MCP server')
       ws?.send(JSON.stringify({ type: 'register', token }))
     }