feat(proxy): implement metrics persistence, traffic logs DB, and advanced monitoring

- Add SQLite schema for proxy metrics and traffic logs
- Implement ProxyMetricsRepo with historical aggregates
- Add TrafficLogsRepo for DB-backed traffic log queries
- Create proxy-advanced IPC handlers (metrics, traffic logs, circuit breaker, parity)
- Add ProxyMetricsService with connection snapshots and cleanup
- Add ProxyReplayService and ProxyIdeConfigService
- Implement MonitorTab and ToolsTab for advanced proxy features
- Add TrafficLogTable with sorting and filtering
- Fix i18n keys for proxy metrics
- Fix generateIdeConfig type mapping
- Update proxy routes with advanced tab integration

src/ipc/proxy-advanced/router.ts

@@ -0,0 +1,172 @@
+import { z } from 'zod';
+import { os } from '@orpc/server';
+import {
+  getRecentTrafficLogs,
+  getTrafficLogStats,
+  exportTrafficLogs,
+  getParityCounters,
+  getCircuitBreakerStatus,
+  getProxyMetrics,
+  getRecentRequests,
+  generateIdeConfig,
+} from './handler';
+
+const TrafficLogEntrySchema = z.object({
+  timestamp: z.string(),
+  direction: z.string(),
+  requestId: z.string(),
+  endpoint: z.string(),
+  method: z.string().optional(),
+  status: z.number().optional(),
+  headers: z.record(z.string(), z.unknown()).optional(),
+  body: z.unknown().optional(),
+  chunk: z.unknown().optional(),
+  durationMs: z.number().optional(),
+  error: z
+    .object({
+      message: z.string(),
+      stack: z.string().optional(),
+      status: z.number().optional(),
+      body: z.unknown().optional(),
+    })
+    .optional(),
+  metadata: z.record(z.string(), z.unknown()).optional(),
+});
+
+const TrafficLogsResponseSchema = z.object({
+  success: z.boolean(),
+  data: z.array(TrafficLogEntrySchema).optional(),
+  error: z.string().optional(),
+});
+
+const TrafficLogStatsResponseSchema = z.object({
+  success: z.boolean(),
+  data: z
+    .object({
+      byDirection: z.record(z.string(), z.number()),
+      byEndpoint: z.record(z.string(), z.number()),
+      total: z.number(),
+    })
+    .optional(),
+  error: z.string().optional(),
+});
+
+const ExportTrafficLogsResponseSchema = z.object({
+  success: z.boolean(),
+  data: z.string().optional(),
+  error: z.string().optional(),
+});
+
+const ParityCountersResponseSchema = z.object({
+  success: z.boolean(),
+  data: z
+    .object({
+      totalRequests: z.number(),
+      matchedRequests: z.number(),
+      parityViolations: z.number(),
+      lastUpdated: z.string(),
+    })
+    .optional(),
+  error: z.string().optional(),
+});
+
+const CircuitBreakerStatusResponseSchema = z.object({
+  success: z.boolean(),
+  data: z
+    .object({
+      states: z.record(
+        z.string(),
+        z.object({
+          state: z.string(),
+          failures: z.number(),
+          lastFailure: z.string().nullable(),
+        }),
+      ),
+      globalEnabled: z.boolean(),
+    })
+    .optional(),
+  error: z.string().optional(),
+});
+
+const ProxyMetricsResponseSchema = z.object({
+  success: z.boolean(),
+  data: z
+    .object({
+      uptimeSeconds: z.number(),
+      totalRequests: z.number(),
+      activeConnections: z.number(),
+      avgLatency: z.number(),
+      errorRate: z.number(),
+      requestsPerMinute: z.number(),
+    })
+    .optional(),
+  error: z.string().optional(),
+});
+
+const RecentRequestsResponseSchema = z.object({
+  success: z.boolean(),
+  data: z.array(z.unknown()).optional(),
+  error: z.string().optional(),
+});
+
+const IdeConfigResponseSchema = z.object({
+  success: z.boolean(),
+  data: z
+    .object({
+      name: z.string(),
+      settingsPath: z.string(),
+      proxySetting: z.string(),
+      apiKeySetting: z.string(),
+      instructions: z.string(),
+    })
+    .optional(),
+  error: z.string().optional(),
+});
+
+export const proxyAdvancedRouter = os.router({
+  getRecentTrafficLogs: os
+    .input(
+      z.object({
+        limit: z.number().int().min(1).max(1000).optional(),
+        direction: z.string().optional(),
+      }),
+    )
+    .output(TrafficLogsResponseSchema)
+    .handler(async ({ input }) => {
+      return getRecentTrafficLogs(input.limit, input.direction);
+    }),
+
+  getTrafficLogStats: os.output(TrafficLogStatsResponseSchema).handler(async () => {
+    return getTrafficLogStats();
+  }),
+
+  exportTrafficLogs: os
+    .input(z.object({ format: z.enum(['json', 'csv']) }))
+    .output(ExportTrafficLogsResponseSchema)
+    .handler(async ({ input }) => {
+      return exportTrafficLogs(input.format);
+    }),
+
+  getParityCounters: os.output(ParityCountersResponseSchema).handler(async () => {
+    return getParityCounters();
+  }),
+
+  getCircuitBreakerStatus: os.output(CircuitBreakerStatusResponseSchema).handler(async () => {
+    return getCircuitBreakerStatus();
+  }),
+
+  getProxyMetrics: os.output(ProxyMetricsResponseSchema).handler(async () => {
+    return getProxyMetrics();
+  }),
+
+  getRecentRequests: os.output(RecentRequestsResponseSchema).handler(async () => {
+    return getRecentRequests();
+  }),
+
+  generateIdeConfig: os
+    .input(z.object({ ide: z.string() }))
+    .output(IdeConfigResponseSchema)
+    .handler(async ({ input }) => {
+      return generateIdeConfig(input.ide);
+    }),
+});