fix(sandbox): support real development workspaces

- raise finite development defaults/ceilings and queue capacities
- migrate untouched v1 default policy
- exclude generated output and shipped runtime paths from snapshots
- report snapshot limit errors with the offending path

src/main/sandbox/execution.ts

@@ -3,7 +3,7 @@ import { assertActive } from './policy'
 
 interface Waiting { workspace: string; start(): void; cancel(): void }
 const queue: Waiting[] = [], busy = new Set<string>()
-const maximumActive = 4, maximumQueued = 32
+const maximumActive = 4, maximumQueued = 64
 function drain(): void {
   for (let index = 0; index < queue.length && busy.size < maximumActive;) {
     const item = queue[index]
@@ -15,7 +15,7 @@ function drain(): void {
 export async function withSandboxExecution<T>(root: string, signal: AbortSignal | undefined, operation: (canonicalRoot: string) => Promise<T>): Promise<T> {
   assertActive(signal)
   const real = await fs.realpath(root), workspace = process.platform === 'win32' ? real.toLowerCase() : real
-  if (queue.length >= maximumQueued || queue.filter(item => item.workspace === workspace).length >= 8) throw new Error('沙盒执行队列已满，请稍后重试')
+  if (queue.length >= maximumQueued || queue.filter(item => item.workspace === workspace).length >= 12) throw new Error('沙盒执行队列已满，请稍后重试')
   return new Promise<T>((done, reject) => {
     const item: Waiting = {
       workspace,