[pull] main from microsoft:main

.agents/skills/launch/SKILL.md

@@ -19,8 +19,10 @@ The clone is **slim**: workspace storage, browser caches, file history, cached V
 ## Prerequisites
 
 - macOS or Linux. The launcher is a bash script and depends on `rsync`, `curl`, `nohup`, and Node on `PATH`. The example caller snippets below also use `jq` (parse the JSON output) and `lsof` (kill-by-port fallback) — install those if you plan to use them, but the launcher itself does not require them.
-- A VS Code checkout with sources built. Run `npm run compile` once (one-shot) or `npm run watch` for incremental rebuilds. Both build the full client **and** the Copilot extension. The launcher also runs `node build/lib/preLaunch.ts` before starting Code OSS, which auto-runs `npm run compile` if `out/` is missing and downloads Electron + built-in extensions.
+- A VS Code checkout with `node_modules/` installed (`npm install` if missing — do **not** symlink from a sibling worktree; that breaks builds in subtle ways).
+- A VS Code checkout with sources built. Run `npm run compile` once (one-shot) or `npm run watch` for incremental rebuilds. Both build the full client **and** all built-in extensions under `extensions/`. You must build the full product to run successfully, building just the client is not enough.
 - An **authenticated** Code OSS profile to seed from. By default the launcher uses `~/.vscode-oss-dev`, which is the user-data-dir the repo's `launch.json` configs use - if the user has ever signed in to Copilot in a dev build, this should work. Only pass `--source-user-data-dir <path>` (or set `$CODE_OSS_DEV_AUTHED_USER_DATA_DIR`) when you specifically want to seed from a different profile (e.g. your regular `~/Library/Application Support/Code` install).
+  - If Code OSS launches and needs a sign-in, don't give up! Use the questions tool to ask the user to sign in.
 - `@playwright/cli` available (it's a devDependency in the vscode repo - `npm install` then use `npx @playwright/cli`).
 - For debugger work: `dap-cli` on `PATH`. If debugger support would be useful but the `dap-cli` skill is not present, prompt the user to install it from https://github.com/roblourens/dap-cli.
 - CSS selectors are internal implementation details. If a selector-based `eval` stops working, take a fresh `snapshot`, inspect the current DOM, and update the selector rather than assuming an old one still applies.
@@ -329,7 +331,7 @@ Code OSS is a full Electron app and easily eats 1-4 GB. Always clean up.
 
 - **"Sent env to running instance. Terminating..."** - The dynamic `--user-data-dir` should prevent this. If you see it, another Code OSS is using the same profile path; pass `--source-user-data-dir` to a different source or check that the temp copy actually happened (`ls "$(jq -r .userDataDir <<<"$INFO")"`).
 - **Renderer ESM errors / `import { Menu } from 'electron'`** - `ELECTRON_RUN_AS_NODE` is set in your env. The launcher unsets it for the child, but if you spawn `code.sh` yourself, do the same.
-- **Built-in extension fails to load (`Cannot find module .../extensions/.../out/extension.js`)** - extensions weren't compiled. Run `npm run compile` (one-shot, also rebuilds the Copilot extension) or `npm run watch` (incremental).
+- **Built-in extension fails to load (`Cannot find module .../extensions/.../out/extension.js`)** - extensions weren't compiled. Run `npm run compile` (one-shot, also rebuilds all built-in extensions) or `npm run watch` (incremental). A common cause: you ran `npm run transpile-client` to satisfy unit tests, which populated `out/` but not `extensions/*/out/`, so preLaunch's "is `out/` missing?" check skipped the compile.
 - **`launch.sh` exits non-zero with a log tail** - either pre-launch failed, `code.sh` died before CDP came up, or CDP never opened within 90s. The tail printed to stderr is from `runDir/code.log` - read it to diagnose.
 - **Snapshot shows the wrong page or no expected controls** - use `tab-list`, switch with `tab-select <index>` if needed, then re-snapshot before interacting.
 - **CLI typing commands complete but the input stays empty** - focus chat with the platform shortcut, use `press` or clipboard paste rather than `fill` / `type`, then verify the input state before sending.

.github/workflows/pr-node-modules.yml

@@ -251,9 +251,6 @@ jobs:
         run: |
           . build/azure-pipelines/win32/exec.ps1
           $ErrorActionPreference = "Stop"
-          # Run preinstall script before root dependencies are installed
-          # so that Electron/v8 headers are patched correctly for native modules.
-          exec { node build/npm/preinstall.ts }
           for ($i = 1; $i -le 5; $i++) {
             try {
               exec { npm ci }

.npmrc

@@ -1,5 +1,5 @@
 disturl="https://electronjs.org/headers"
-target="42.2.0"
+target="42.3.0"
 ms_build_id="14159160"
 runtime="electron"
 ignore-scripts=false

.vscode/launch.json

@@ -309,6 +309,7 @@
 				"VSCODE_EXTHOST_WILL_SEND_SOCKET": null,
 				"VSCODE_SKIP_PRELAUNCH": "1",
 				"VSCODE_DEV_DEBUG_OBSERVABLES": "1",
+				// "VSCODE_DEV_DISABLE_DISPOSABLE_TRACKING": "1",
 			},
 			"cleanUp": "wholeBrowser",
 			"killBehavior": "polite",

build/.cachesalt

@@ -1 +1 @@
-2026-05-13T00:00:00.000Z
+2026-05-27T16:21:42.961Z

build/azure-pipelines/win32/product-build-win32-node-modules.yml

@@ -70,9 +70,6 @@ jobs:
       - powershell: |
           . build/azure-pipelines/win32/exec.ps1
           $ErrorActionPreference = "Stop"
-          # Run preinstall script before root dependencies are installed
-          # so that Electron/v8 headers are patched correctly for native modules.
-          exec { node build/npm/preinstall.ts }
           exec { npm ci }
         env:
           npm_config_arch: $(VSCODE_ARCH)

build/azure-pipelines/win32/sdl-scan-win32.yml

@@ -82,9 +82,6 @@ steps:
   - powershell: |
       . build/azure-pipelines/win32/exec.ps1
       $ErrorActionPreference = "Stop"
-      # Run preinstall script before root dependencies are installed
-      # so that Electron/v8 headers are patched correctly for native modules.
-      exec { node build/npm/preinstall.ts }
       exec { npm ci }
     env:
       npm_config_arch: ${{ parameters.VSCODE_ARCH }}

build/azure-pipelines/win32/steps/product-build-win32-compile.yml

@@ -78,9 +78,6 @@ steps:
   - powershell: |
       . build/azure-pipelines/win32/exec.ps1
       $ErrorActionPreference = "Stop"
-      # Run preinstall script before root dependencies are installed
-      # so that Electron/v8 headers are patched correctly for native modules.
-      exec { node build/npm/preinstall.ts }
       exec { npm ci }
     env:
       npm_config_arch: $(VSCODE_ARCH)

build/darwin/dmg-settings.py.template

@@ -7,7 +7,7 @@ badge_icon = {{BADGE_ICON}}
 background = {{BACKGROUND}}
 
 # Volume size
-size = '1g'
+size = '1.5g'
 shrink = False
 
 # Files and symlinks

build/lib/electron.ts

@@ -100,7 +100,8 @@ function darwinBundleDocumentTypes(types: { [name: string]: string | string[] },
 	});
 }
 
-const { electronVersion, msBuildId } = util.getElectronVersion();
+const { msBuildId } = util.getElectronVersion();
+const electronVersion = '42.2.0';
 
 export const config = {
 	version: electronVersion,

build/lib/stylelint/vscode-known-variables.json

@@ -12,6 +12,8 @@
 		"--vscode-activityBarBadge-background",
 		"--vscode-activityBarBadge-foreground",
 		"--vscode-activityBarTop-activeBackground",
+		"--vscode-activeSessionView-background",
+		"--vscode-activeSessionView-foreground",
 		"--vscode-activityBarTop-activeBorder",
 		"--vscode-activityBarTop-background",
 		"--vscode-activityBarTop-dropBorder",
@@ -25,6 +27,8 @@
 		"--vscode-agentSessionReadIndicator-foreground",
 		"--vscode-agentSessionSelectedBadge-border",
 		"--vscode-agentSessionSelectedUnfocusedBadge-border",
+		"--vscode-inactiveSessionView-background",
+		"--vscode-inactiveSessionView-foreground",
 		"--vscode-agentStatusIndicator-background",
 		"--vscode-badge-background",
 		"--vscode-badge-foreground",
@@ -947,6 +951,8 @@
 		"--mobile-diff-tok-keyword",
 		"--mobile-diff-tok-number",
 		"--chat-editing-last-edit-shift",
+		"--session-view-background",
+		"--session-view-foreground",
 		"--chat-current-response-min-height",
 		"--chat-smooth-delay",
 		"--chat-smooth-duration",

build/npm/preinstall.ts

@@ -146,8 +146,6 @@ function installHeaders() {
 	// the downloaded Electron headers. This is used to work around upstream issues:
 	//   - v8-source-location.h: remove dependency on std::source_location (GCC 11+ requirement)
 	//     Refs https://chromium-review.googlesource.com/c/v8/v8/+/6879784
-	//   - cppgc/heap.h: replace GCC/Clang-only __builtin_frame_address(0) with the
-	//     MSVC equivalent _AddressOfReturnAddress() so native modules build with MSVC.
 	if (local !== undefined) {
 		const localHeaderPath = getLocalHeaderPath(local.target);
 		if (localHeaderPath && fs.existsSync(localHeaderPath)) {