Fix confirmations.

- This fixes what it means to get confirmations in GC. Prior to this they had just been accidentally unwired as part of all of the refactorings to turns + to server/core.
  - The key piece of this is that we wrap the onConfirm in the gemini stream hook in order to resubmit function responses. This isn't 100% ideal but gets the job done for now.
- Fixed history not updating properly with confirmations.

Fixes https://b.corp.google.com/issues/412323656

packages/server/src/core/turn.ts

@@ -130,83 +130,78 @@ export class Turn {
           yield event;
         }
       }
+    }
 
-      // Execute pending tool calls
-      const toolPromises = this.pendingToolCalls.map(
-        async (pendingToolCall): Promise<ServerToolExecutionOutcome> => {
-          const tool = this.availableTools.get(pendingToolCall.name);
-          if (!tool) {
-            return {
-              ...pendingToolCall,
-              error: new Error(
-                `Tool "${pendingToolCall.name}" not found or not provided to Turn.`,
-              ),
-              confirmationDetails: undefined,
-            };
-          }
-
-          try {
-            const confirmationDetails = await tool.shouldConfirmExecute(
-              pendingToolCall.args,
-            );
-            if (confirmationDetails) {
-              return { ...pendingToolCall, confirmationDetails };
-            } else {
-              const result = await tool.execute(pendingToolCall.args);
-              return {
-                ...pendingToolCall,
-                result,
-                confirmationDetails: undefined,
-              };
-            }
-          } catch (execError: unknown) {
-            return {
-              ...pendingToolCall,
-              error: new Error(
-                `Tool execution failed: ${execError instanceof Error ? execError.message : String(execError)}`,
-              ),
-              confirmationDetails: undefined,
-            };
-          }
-        },
-      );
-      const outcomes = await Promise.all(toolPromises);
-
-      // Process outcomes and prepare function responses
-      this.pendingToolCalls = []; // Clear pending calls for this turn
-
-      for (let i = 0; i < outcomes.length; i++) {
-        const outcome = outcomes[i];
-        if (outcome.confirmationDetails) {
-          this.confirmationDetails.push(outcome.confirmationDetails);
-          const serverConfirmationetails: ServerToolCallConfirmationDetails = {
-            request: {
-              callId: outcome.callId,
-              name: outcome.name,
-              args: outcome.args,
-            },
-            details: outcome.confirmationDetails,
+    // Execute pending tool calls
+    const toolPromises = this.pendingToolCalls.map(
+      async (pendingToolCall): Promise<ServerToolExecutionOutcome> => {
+        const tool = this.availableTools.get(pendingToolCall.name);
+        if (!tool) {
+          return {
+            ...pendingToolCall,
+            error: new Error(
+              `Tool "${pendingToolCall.name}" not found or not provided to Turn.`,
+            ),
+            confirmationDetails: undefined,
           };
-          yield {
-            type: GeminiEventType.ToolCallConfirmation,
-            value: serverConfirmationetails,
-          };
-        } else {
-          const responsePart = this.buildFunctionResponse(outcome);
-          this.fnResponses.push(responsePart);
-          const responseInfo: ToolCallResponseInfo = {
-            callId: outcome.callId,
-            responsePart,
-            resultDisplay: outcome.result?.returnDisplay,
-            error: outcome.error,
-          };
-          yield { type: GeminiEventType.ToolCallResponse, value: responseInfo };
         }
-      }
 
-      // If there were function responses, the caller (GeminiService) will loop
-      // and call run() again with these responses.
-      // If no function responses, the turn ends here.
+        try {
+          const confirmationDetails = await tool.shouldConfirmExecute(
+            pendingToolCall.args,
+          );
+          if (confirmationDetails) {
+            return { ...pendingToolCall, confirmationDetails };
+          } else {
+            const result = await tool.execute(pendingToolCall.args);
+            return {
+              ...pendingToolCall,
+              result,
+              confirmationDetails: undefined,
+            };
+          }
+        } catch (execError: unknown) {
+          return {
+            ...pendingToolCall,
+            error: new Error(
+              `Tool execution failed: ${execError instanceof Error ? execError.message : String(execError)}`,
+            ),
+            confirmationDetails: undefined,
+          };
+        }
+      },
+    );
+    const outcomes = await Promise.all(toolPromises);
+
+    // Process outcomes and prepare function responses
+    this.pendingToolCalls = []; // Clear pending calls for this turn
+
+    for (const outcome of outcomes) {
+      if (outcome.confirmationDetails) {
+        this.confirmationDetails.push(outcome.confirmationDetails);
+        const serverConfirmationetails: ServerToolCallConfirmationDetails = {
+          request: {
+            callId: outcome.callId,
+            name: outcome.name,
+            args: outcome.args,
+          },
+          details: outcome.confirmationDetails,
+        };
+        yield {
+          type: GeminiEventType.ToolCallConfirmation,
+          value: serverConfirmationetails,
+        };
+      } else {
+        const responsePart = this.buildFunctionResponse(outcome);
+        this.fnResponses.push(responsePart);
+        const responseInfo: ToolCallResponseInfo = {
+          callId: outcome.callId,
+          responsePart,
+          resultDisplay: outcome.result?.returnDisplay,
+          error: outcome.error,
+        };
+        yield { type: GeminiEventType.ToolCallResponse, value: responseInfo };
+      }
     }
   }