feat: 添加 napi 包测试覆盖与 stub 改进

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

packages/url-handler-napi/src/index.ts

@@ -1,3 +1,48 @@
+const MAX_URL_LENGTH = 2048
+
+/**
+ * Check for a pending URL event from environment variables or CLI arguments.
+ *
+ * This is a synchronous snapshot check, not an event listener. The optional
+ * timeout parameter is retained for API compatibility but has no practical
+ * effect since process.env and process.argv do not change at runtime.
+ * Callers that need to wait for an OS-level deep link activation should use
+ * an IPC channel or platform-specific event listener instead.
+ */
 export async function waitForUrlEvent(timeoutMs?: number): Promise<string | null> {
-  return null
+  return findUrlEvent()
+}
+
+/**
+ * Checks three env var sources (set by the OS URL scheme handler or installer)
+ * and then CLI arguments for a claude:// deep link URL.
+ *
+ * Priority order:
+ * 1. CLAUDE_CODE_URL_EVENT — set by the OS URL scheme handler on activation
+ * 2. CLAUDE_CODE_DEEP_LINK_URL — set by the desktop app launcher
+ * 3. CLAUDE_CODE_URL — legacy / manual override
+ * 4. CLI arguments — e.g. `claude claude://...`
+ */
+function findUrlEvent(): string | null {
+  for (const key of [
+    'CLAUDE_CODE_URL_EVENT',
+    'CLAUDE_CODE_DEEP_LINK_URL',
+    'CLAUDE_CODE_URL',
+  ]) {
+    const value = process.env[key]
+    if (isClaudeUrl(value)) {
+      return value
+    }
+  }
+
+  const arg = process.argv.find(isClaudeUrl)
+  return arg ?? null
+}
+
+function isClaudeUrl(value: unknown): value is string {
+  return (
+    typeof value === 'string' &&
+    value.length <= MAX_URL_LENGTH &&
+    (value.startsWith('claude-cli://') || value.startsWith('claude://'))
+  )
 }