add .gitignore, clean up generated files from node_modules

Remove from tracking:
- dist/ (build output, regenerated by bun run build.ts)
- node_modules/.pnpm/ (pnpm internal store, 247MB)
- node_modules/.bin/ (executable symlinks)
- node_modules/.ignored/ and .ignored_* (source-map dirs moved aside by pnpm)
- 100 pnpm-installed package symlinks (regenerated by pnpm install)

Keep in tracking:
- Private package stubs not on npm (color-diff-napi, modifiers-napi,
  @ant/claude-for-chrome-mcp, @anthropic-ai/mcpb, @anthropic-ai/sandbox-runtime)
- Source-map extracted packages not installed by pnpm (@grpc/*, @protobufjs/*, etc.)

claude-code-source/node_modules/@azure/msal-common/dist/utils/FunctionWrappers.mjs

@@ -1,99 +0,0 @@
-/*! @azure/msal-common v15.13.1 2025-10-29 */
-'use strict';
-/*
- * Copyright (c) Microsoft Corporation. All rights reserved.
- * Licensed under the MIT License.
- */
-/**
- * Wraps a function with a performance measurement.
- * Usage: invoke(functionToCall, performanceClient, "EventName", "correlationId")(...argsToPassToFunction)
- * @param callback
- * @param eventName
- * @param logger
- * @param telemetryClient
- * @param correlationId
- * @returns
- * @internal
- */
-// eslint-disable-next-line @typescript-eslint/no-explicit-any
-const invoke = (callback, eventName, logger, telemetryClient, correlationId) => {
-    return (...args) => {
-        logger.trace(`Executing function ${eventName}`);
-        const inProgressEvent = telemetryClient?.startMeasurement(eventName, correlationId);
-        if (correlationId) {
-            // Track number of times this API is called in a single request
-            const eventCount = eventName + "CallCount";
-            telemetryClient?.incrementFields({ [eventCount]: 1 }, correlationId);
-        }
-        try {
-            const result = callback(...args);
-            inProgressEvent?.end({
-                success: true,
-            });
-            logger.trace(`Returning result from ${eventName}`);
-            return result;
-        }
-        catch (e) {
-            logger.trace(`Error occurred in ${eventName}`);
-            try {
-                logger.trace(JSON.stringify(e));
-            }
-            catch (e) {
-                logger.trace("Unable to print error message.");
-            }
-            inProgressEvent?.end({
-                success: false,
-            }, e);
-            throw e;
-        }
-    };
-};
-/**
- * Wraps an async function with a performance measurement.
- * Usage: invokeAsync(functionToCall, performanceClient, "EventName", "correlationId")(...argsToPassToFunction)
- * @param callback
- * @param eventName
- * @param logger
- * @param telemetryClient
- * @param correlationId
- * @returns
- * @internal
- *
- */
-// eslint-disable-next-line @typescript-eslint/no-explicit-any
-const invokeAsync = (callback, eventName, logger, telemetryClient, correlationId) => {
-    return (...args) => {
-        logger.trace(`Executing function ${eventName}`);
-        const inProgressEvent = telemetryClient?.startMeasurement(eventName, correlationId);
-        if (correlationId) {
-            // Track number of times this API is called in a single request
-            const eventCount = eventName + "CallCount";
-            telemetryClient?.incrementFields({ [eventCount]: 1 }, correlationId);
-        }
-        telemetryClient?.setPreQueueTime(eventName, correlationId);
-        return callback(...args)
-            .then((response) => {
-            logger.trace(`Returning result from ${eventName}`);
-            inProgressEvent?.end({
-                success: true,
-            });
-            return response;
-        })
-            .catch((e) => {
-            logger.trace(`Error occurred in ${eventName}`);
-            try {
-                logger.trace(JSON.stringify(e));
-            }
-            catch (e) {
-                logger.trace("Unable to print error message.");
-            }
-            inProgressEvent?.end({
-                success: false,
-            }, e);
-            throw e;
-        });
-    };
-};
-
-export { invoke, invokeAsync };
-//# sourceMappingURL=FunctionWrappers.mjs.map