feat: add app management, local inference controls, and task statistics

src/main/inference-process-resources.ts

@@ -0,0 +1,48 @@
+import type { ProcessMetric } from 'electron'
+import type { InferenceResources } from '../shared/local-inference-contracts'
+
+// One sampler per transport: a replacement process never inherits the old baseline.
+export function createInferenceProcessSampler(
+  getPid: () => number | undefined,
+  getMetrics: () => ProcessMetric[],
+  now: () => number = () => performance.now()
+): () => InferenceResources {
+  let previous: { pid: number; creationTime: number; time: number; cpu: number } | undefined
+  return () => {
+    const pid = getPid()
+    let metric: ProcessMetric | undefined
+    try {
+      if (pid !== undefined) metric = getMetrics().find((entry) => entry.pid === pid && entry.type === 'Utility')
+    } catch {
+      previous = undefined
+      return { scope: 'unavailable', reason: '进程资源采样失败' }
+    }
+    if (!metric) {
+      previous = undefined
+      return { scope: 'unavailable', reason: pid === undefined ? '服务进程未运行' : '等待进程资源数据' }
+    }
+    const time = now()
+    const cpu = metric.cpu.cumulativeCPUUsage
+    const resources: InferenceResources = {
+      scope: 'service-process', pid: metric.pid, sampledAt: Date.now(),
+      cpuUnavailableReason: '正在建立采样基线'
+    }
+    // Electron reports working set in KiB. Do not replace absent readings with zero.
+    const memory = metric.memory?.workingSetSize
+    if (Number.isFinite(memory) && memory >= 0) resources.workingSetBytes = memory * 1024
+    else resources.memoryUnavailableReason = '系统未提供工作集内存'
+    if (cpu !== undefined && Number.isFinite(cpu) && cpu >= 0) {
+      if (previous && previous.pid === metric.pid && previous.creationTime === metric.creationTime &&
+        time > previous.time && time - previous.time <= 15000 && cpu >= previous.cpu) {
+        // Single-core capacity is 100%; multithreaded inference may exceed 100%.
+        resources.cpuPercent = (cpu - previous.cpu) * 100_000 / (time - previous.time)
+        resources.cpuUnavailableReason = undefined
+      }
+      previous = { pid: metric.pid, creationTime: metric.creationTime, time, cpu }
+    } else {
+      previous = undefined
+      resources.cpuUnavailableReason = '系统未提供进程 CPU 时间'
+    }
+    return resources
+  }
+}