refactor: reorganize codebase — move browse CLI to browse/ directory

Restructure project layout: src/ → browse/src/, test/ → browse/test/. Add snapshot testing. Update docs, package.json, and skills integration. Add setup script and TODO tracking.

Co-Authored-By: Claude Haiku 4.5 <noreply@anthropic.com>

browse/src/buffers.ts

@@ -0,0 +1,37 @@
+/**
+ * Shared buffers and types — extracted to break circular dependency
+ * between server.ts and browser-manager.ts
+ */
+
+export interface LogEntry {
+  timestamp: number;
+  level: string;
+  text: string;
+}
+
+export interface NetworkEntry {
+  timestamp: number;
+  method: string;
+  url: string;
+  status?: number;
+  duration?: number;
+  size?: number;
+}
+
+export const consoleBuffer: LogEntry[] = [];
+export const networkBuffer: NetworkEntry[] = [];
+const HIGH_WATER_MARK = 50_000;
+
+export function addConsoleEntry(entry: LogEntry) {
+  consoleBuffer.push(entry);
+  if (consoleBuffer.length === HIGH_WATER_MARK) {
+    console.warn(`[browse] Console buffer reached ${HIGH_WATER_MARK} entries`);
+  }
+}
+
+export function addNetworkEntry(entry: NetworkEntry) {
+  networkBuffer.push(entry);
+  if (networkBuffer.length === HIGH_WATER_MARK) {
+    console.warn(`[browse] Network buffer reached ${HIGH_WATER_MARK} entries`);
+  }
+}