refactor(domains): share target resolution and CDP error mapping

The ref-vs-x/y branch turned out to exist in one tool, not four; it is now
one helper with tests covering the half-specified-coordinate and stale-ref
cases. cdpCall folds the repeated cdp_error mapping at 24 active-session
call sites; target-scoped callOnTarget/callBrowser sites are left alone.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>

1 files changed, 14 insertions, 0 deletions

diff --git a/src/domains/cdp-call.ts b/src/domains/cdp-call.ts
new file mode 100644
index 0000000..3316633
--- /dev/null
+++ b/src/domains/cdp-call.ts
@@ -0,0 +1,14 @@
+import type { BrowserClient } from "../client";
+import type { CdpMethod, ParamsOf, ResultOf } from "../cdp/commands";
+import { type Result, err } from "../util/result";
+import type { ToolErr } from "../util/tool";
+
+export const cdpCall = async <M extends CdpMethod>(
+  client: BrowserClient,
+  method: M,
+  params: ParamsOf<M>,
+): Promise<Result<ResultOf<M>, ToolErr>> => {
+  const r = await client.session().call(method, params);
+  if (!r.success) return err({ kind: "cdp_error", message: r.error.message, details: { method } });
+  return r;
+};