Fix Gemini Code's (GC) smarts.

- The tl;dr; is that GC couldn't see what the user was saying when tool call events happened in response. The rason why this was happening was because we were instantly invoking tools that the model told us to invoke and then instantly re-requesting. This resulted in the bug because the genai APIs can't update the chat history before a full response has been completed (doesn't know how to update if it's incomplete).
- To address the above issue I had to do quite the large refactor. The gist is that now turns truly drive everything on the server (vs. a server client split). This ensured that when we got tool invocations we could control when/how re-requesting would happen and then also ensure that history was updated. This change also meant that the server would act as an event publisher to enable the client to react to events rather than try and weave in complex logic between the events.
- A BIG change that this changeset incudes is the removal of all of the CLI tools in favor of the server tools.
- Removed some dead code as part of this
- **NOTE: Confirmations are still broken (they were broken prior to this); however, I've set them up to be able to work in the future, I'll dot hat in a follow up to be less breaking to others.**

Fixes https://b.corp.google.com/issues/412320087

1 files changed, 0 insertions, 241 deletions

diff --git a/packages/cli/src/core/history-updater.ts b/packages/cli/src/core/history-updater.ts
deleted file mode 100644
index f56e76ca..00000000
--- a/packages/cli/src/core/history-updater.ts
+++ /dev/null
@@ -1,241 +0,0 @@
-/**
- * @license
- * Copyright 2025 Google LLC
- * SPDX-License-Identifier: Apache-2.0
- */
-
-import { Part } from '@google/genai';
-import { toolRegistry } from '../tools/tool-registry.js';
-import {
-  HistoryItem,
-  IndividualToolCallDisplay,
-  ToolCallEvent,
-  ToolCallStatus,
-  ToolConfirmationOutcome,
-  ToolEditConfirmationDetails,
-  ToolExecuteConfirmationDetails,
-} from '../ui/types.js';
-import { ToolResultDisplay } from '../tools/tools.js';
-
-/**
- * Processes a tool call chunk and updates the history state accordingly.
- * Manages adding new tool groups or updating existing ones.
- * Resides here as its primary effect is updating history based on tool events.
- */
-export const handleToolCallChunk = (
-  chunk: ToolCallEvent,
-  setHistory: React.Dispatch<React.SetStateAction<HistoryItem[]>>,
-  submitQuery: (query: Part) => Promise<void>,
-  getNextMessageId: () => number,
-  currentToolGroupIdRef: React.MutableRefObject<number | null>,
-): void => {
-  const toolDefinition = toolRegistry.getTool(chunk.name);
-  const description = toolDefinition?.getDescription
-    ? toolDefinition.getDescription(chunk.args)
-    : '';
-  const toolDisplayName = toolDefinition?.displayName ?? chunk.name;
-  let confirmationDetails = chunk.confirmationDetails;
-  if (confirmationDetails) {
-    const originalConfirmationDetails = confirmationDetails;
-    const historyUpdatingConfirm = async (outcome: ToolConfirmationOutcome) => {
-      originalConfirmationDetails.onConfirm(outcome);
-
-      if (outcome === ToolConfirmationOutcome.Cancel) {
-        let resultDisplay: ToolResultDisplay | undefined;
-        if ('fileDiff' in originalConfirmationDetails) {
-          resultDisplay = {
-            fileDiff: (
-              originalConfirmationDetails as ToolEditConfirmationDetails
-            ).fileDiff,
-          };
-        } else {
-          resultDisplay = `~~${(originalConfirmationDetails as ToolExecuteConfirmationDetails).command}~~`;
-        }
-        handleToolCallChunk(
-          {
-            ...chunk,
-            status: ToolCallStatus.Error,
-            confirmationDetails: undefined,
-            resultDisplay: resultDisplay ?? 'Canceled by user.',
-          },
-          setHistory,
-          submitQuery,
-          getNextMessageId,
-          currentToolGroupIdRef,
-        );
-        const functionResponse: Part = {
-          functionResponse: {
-            name: chunk.name,
-            response: { error: 'User rejected function call.' },
-          },
-        };
-        await submitQuery(functionResponse);
-      } else {
-        const tool = toolRegistry.getTool(chunk.name);
-        if (!tool) {
-          throw new Error(
-            `Tool "${chunk.name}" not found or is not registered.`,
-          );
-        }
-        handleToolCallChunk(
-          {
-            ...chunk,
-            status: ToolCallStatus.Invoked,
-            resultDisplay: 'Executing...',
-            confirmationDetails: undefined,
-          },
-          setHistory,
-          submitQuery,
-          getNextMessageId,
-          currentToolGroupIdRef,
-        );
-        const result = await tool.execute(chunk.args);
-        handleToolCallChunk(
-          {
-            ...chunk,
-            status: ToolCallStatus.Invoked,
-            resultDisplay: result.returnDisplay,
-            confirmationDetails: undefined,
-          },
-          setHistory,
-          submitQuery,
-          getNextMessageId,
-          currentToolGroupIdRef,
-        );
-        const functionResponse: Part = {
-          functionResponse: {
-            name: chunk.name,
-            id: chunk.callId,
-            response: { output: result.llmContent },
-          },
-        };
-        await submitQuery(functionResponse);
-      }
-    };
-
-    confirmationDetails = {
-      ...originalConfirmationDetails,
-      onConfirm: historyUpdatingConfirm,
-    };
-  }
-  const toolDetail: IndividualToolCallDisplay = {
-    callId: chunk.callId,
-    name: toolDisplayName,
-    description,
-    resultDisplay: chunk.resultDisplay,
-    status: chunk.status,
-    confirmationDetails,
-  };
-
-  const activeGroupId = currentToolGroupIdRef.current;
-  setHistory((prev) => {
-    if (chunk.status === ToolCallStatus.Pending) {
-      if (activeGroupId === null) {
-        // Start a new tool group
-        const newGroupId = getNextMessageId();
-        currentToolGroupIdRef.current = newGroupId;
-        return [
-          ...prev,
-          {
-            id: newGroupId,
-            type: 'tool_group',
-            tools: [toolDetail],
-          } as HistoryItem,
-        ];
-      }
-
-      // Add to existing tool group
-      return prev.map((item) =>
-        item.id === activeGroupId && item.type === 'tool_group'
-          ? item.tools.some((t) => t.callId === toolDetail.callId)
-            ? item // Tool already listed as pending
-            : { ...item, tools: [...item.tools, toolDetail] }
-          : item,
-      );
-    }
-
-    // Update the status of a pending tool within the active group
-    if (activeGroupId === null) {
-      // Log if an invoked tool arrives without an active group context
-      console.warn(
-        'Received invoked tool status without an active tool group ID:',
-        chunk,
-      );
-      return prev;
-    }
-
-    return prev.map((item) =>
-      item.id === activeGroupId && item.type === 'tool_group'
-        ? {
-            ...item,
-            tools: item.tools.map((t) =>
-              t.callId === toolDetail.callId
-                ? { ...t, ...toolDetail, status: chunk.status } // Update details & status
-                : t,
-            ),
-          }
-        : item,
-    );
-  });
-};
-
-/**
- * Appends an error or informational message to the history, attempting to attach
- * it to the last non-user message or creating a new entry.
- */
-export const addErrorMessageToHistory = (
-  error: DOMException | Error,
-  setHistory: React.Dispatch<React.SetStateAction<HistoryItem[]>>,
-  getNextMessageId: () => number,
-): void => {
-  const isAbort = error.name === 'AbortError';
-  const errorType = isAbort ? 'info' : 'error';
-  const errorText = isAbort
-    ? '[Request cancelled by user]'
-    : `[Error: ${error.message || 'Unknown error'}]`;
-
-  setHistory((prev) => {
-    const reversedHistory = [...prev].reverse();
-    // Find the last message that isn't from the user to append the error/info to
-    const lastBotMessageIndex = reversedHistory.findIndex(
-      (item) => item.type !== 'user',
-    );
-    const originalIndex =
-      lastBotMessageIndex !== -1 ? prev.length - 1 - lastBotMessageIndex : -1;
-
-    if (originalIndex !== -1) {
-      // Append error to the last relevant message
-      return prev.map((item, index) => {
-        if (index === originalIndex) {
-          let baseText = '';
-          // Determine base text based on item type
-          if (item.type === 'gemini') baseText = item.text ?? '';
-          else if (item.type === 'tool_group')
-            baseText = `Tool execution (${item.tools.length} calls)`;
-          else if (item.type === 'error' || item.type === 'info')
-            baseText = item.text ?? '';
-          // Safely handle potential undefined text
-
-          const updatedText = (
-            baseText +
-            (baseText && !baseText.endsWith('\n') ? '\n' : '') +
-            errorText
-          ).trim();
-          // Reuse existing ID, update type and text
-          return { ...item, type: errorType, text: updatedText };
-        }
-        return item;
-      });
-    } else {
-      // No previous message to append to, add a new error item
-      return [
-        ...prev,
-        {
-          id: getNextMessageId(),
-          type: errorType,
-          text: errorText,
-        } as HistoryItem,
-      ];
-    }
-  });
-};