feat(gemini-adapter): improve tool events

Normalized Gemini tool_use/tool_result events to expose richer metadata (name, callId, args/output/exitCode/error) and fall back to parameters/input fields so downstream consumers no longer need to inspect originalItem.

Author: OhadAssulin

packages/gemini-adapter/src/index.ts

@@ -504,9 +504,9 @@ function normalizeGeminiEvent(event: any): CoderStreamEvent[] {
         {
           type: 'tool_use',
           provider,
-          name: ev.tool_name ?? 'tool',
-          callId: ev.call_id,
-          args: ev.args,
+          name: ev.tool_name ?? ev.name ?? 'tool',
+          callId: ev.tool_id ?? ev.call_id ?? ev.id ?? null,
+          args: ev.parameters ?? ev.args ?? ev.input ?? null,
           ts,
           originalItem: ev,
         },
@@ -516,10 +516,11 @@ function normalizeGeminiEvent(event: any): CoderStreamEvent[] {
         {
           type: 'tool_result',
           provider,
-          name: ev.tool_name ?? 'tool',
-          callId: ev.call_id,
-          result: ev.result,
-          exitCode: ev.exit_code ?? null,
+          name: ev.tool_name ?? ev.name ?? 'tool',
+          callId: ev.tool_id ?? ev.call_id ?? ev.id ?? null,
+          result: ev.output ?? ev.result ?? ev.response ?? null,
+          exitCode: ev.exit_code ?? ev.status ?? null,
+          error: ev.error ?? null,
           ts,
           originalItem: ev,
         },