[elielvipata]

Reconstruct batch 116/124: 2026-10-20 → 2026-10-21 (sessions, agenthost, chat, extensions/copilot)

Overview

• Upstream range: 146c01e426b..f75da500219
• Dates: 2026-10-20 → 2026-10-21
• Commits: 52 (45 on the first-parent line of main, 4 merges)
• Contributors: 17 — Alexandru Dima (10), benibenj (7), Megan Rogge (6), roblourens (4), Osvaldo Ortega (4), Bryan Chen (4), Justin Chen (3), Logan Ramos (2) …
• Diff: 273 files changed, 13994 insertions(+), 1859 deletions(-)
• Files: 258 modified, 15 added
• Base branch: reconstruct/batch-115

Upstream PRs

This PR folds in 45 microsoft/vscode PRs.

• #342960 sessions: use compare icon for model comparisons
• #342951 build(deps): bump hono from 4.13.7 to 4.13.13 in /extensions/copilot
• #342953 agentHost: support Copilot host plan reviews
• #342956 chat: render
  in markdown table cells as line breaks
• #342973 Update distro commit (main)
• #342988 Fix Custom Editor Startup Race
• #342998 change assisted permissions badge from experimental to new
• #343015 sessions: stop chat updates during view disposal
• #343005 Fix model picker search speed
• #343025 sessions: cover returning the only quick chat to an empty Chats section
• #342992 agentHost: await changeset signals instead of polling timers in changeset service tests
• #343028 chat: toggle session list sections on single click
• #342855 Make agent file editing harness aware
• #342965 chat: keep steering messages visible during host handoff
• #343030 agentHost: fix worktree measurement errors for .asar paths
• #342848 sessions: preserve custom group collapse state across restarts
• #343031 sessions: simplify the workspace clear button styling
• #343035 chat: use a frozen history replay clock in ChatService tests that snapshot right after a history change (fixes flake)
• #343026 agentHost: send each MCP OAuth token only to its target server
• #342999 sessions: discover cloud sandboxes through Mission Control push updates
• #342779 agentHost: bump Copilot SDK to 1.0.24-preview.0
• #343029 sessions: keep drafts when cloud creation fails
• #342729 ci: skip core test jobs that the changes cannot affect
• #342906 editTelemetry: preserve precise edit survival attribution
• #342887 Add Copilot agent file schema support
• #342943 chat: stabilize sticky request width during rendering and completion
• #343017 test: wait for focus changes to reach the renderer in InlineEditInputBox tests
• #342997 sessions: group the sessions list by repository
• #343043 sessions: simplify worktree cleanup controls and fix picker cursor
• #343037 agentHost: show actual sandbox support failure reasons
• #343044 chat: use a tag for permission settings
• #343053 agentHost: don't arm the model download stall timer while the disk drains the first chunk (fixes flake)
• #342981 agentHost: stop lowering CI timeouts for disk-backed database tests
• #343052 voice: preserve specific BYOK connection errors
• #343011 Stream Agent Host shell output without rebuilding the whole transcript
• #343067 smoke: wait for New Local Chat to bind its session before sending in Chat Sessions test (fixes flake)
• #343054 agentHost: stop the llama-server before each quit in the DFlash persistence test, so the next start finds its lock free (fixes flake)
• #343061 sessions: wait for a done nested chat to move to the Done section in the primary action test (fixes flake)
• #343023 Keep sandbox chat input visible while connecting
• #343042 agentHost: handle EPIPE when a Copilot hook exits without reading stdin (fixes toSdkHooks flake)
• #343066 chat: explain cloud session startup failures
• #343040 sessions: clarify comparison setup navigation
• #343051 agentHost: don't delete a concurrently published Computer Use plugin on install (fixes flake)
• #342986 Engineering - flush pending disk writes before the Linux tests
• #343024 sessions: support nested custom groups

Summary of changes by area

sessions (18)

• sessions: use compare icon for model comparisons (sessions: use compare icon for model comparisons microsoft/vscode#342960) (2c225c37d87)
• sessions: group the sessions list by repository (146fb975be8)
• change assisted permissions badge from experimental to new (change assisted permissions badge from experimental to new microsoft/vscode#342998) (74c426eb91f)
• sessions: support nested custom groups (b5e0e90c489)
• sessions: stop chat updates during view disposal (sessions: stop chat updates during view disposal microsoft/vscode#343015) (16f7e34618f)
• sessions: cover returning the only quick chat to an empty Chats section (sessions: cover returning the only quick chat to an empty Chats section microsoft/vscode#343025) (61c4648971f)
• sessions: own nested group placement in the groups service (d8087e2addc)
• sessions: allow the group path separator past hygiene (4fab110fc14)
• sessions: preserve custom group collapse state across restarts (sessions: preserve custom group collapse state across restarts microsoft/vscode#342848) (fcdfc36cda8)
• sessions: simplify the workspace clear button styling (sessions: simplify the workspace clear button styling microsoft/vscode#343031) (f8709721a8a)
• sessions: discover cloud sandboxes through Mission Control push updates (sessions: discover cloud sandboxes through Mission Control push updates microsoft/vscode#342999) (6374eaa1381)
• sessions: keep drafts when cloud creation fails (sessions: keep drafts when cloud creation fails microsoft/vscode#343029) (465bd66ccb4)
• sessions: group the sessions list by repository (sessions: group the sessions list by repository microsoft/vscode#342997) (c3890577dad)
• sessions: simplify worktree cleanup controls and fix picker cursor (sessions: simplify worktree cleanup controls and fix picker cursor microsoft/vscode#343043) (64ea39c1745)
• sessions: test that moving a header keeps other groups' subgroup order (231f650c507)
• sessions: wait for a done nested chat to move to the Done section in the primary action test (fixes flake) (sessions: wait for a done nested chat to move to the Done section in the primary action test (fixes flake) microsoft/vscode#343061) (e5a32e282ba)
• sessions: clarify comparison setup navigation (sessions: clarify comparison setup navigation microsoft/vscode#343040) (b758264bbd6)
• sessions: support nested custom groups (sessions: support nested custom groups microsoft/vscode#343024) (f75da500219)

agenthost (11)

• agentHost: support Copilot host plan reviews (agentHost: support Copilot host plan reviews microsoft/vscode#342953) (7317db17ac4)
• agentHost: await changeset signals instead of polling timers in changeset service tests (agentHost: await changeset signals instead of polling timers in changeset service tests microsoft/vscode#342992) (422a035bc87)
• agentHost: fix worktree measurement errors for .asar paths (agentHost: fix worktree measurement errors for .asar paths microsoft/vscode#343030) (9303c10ca8a)
• agentHost: send each MCP OAuth token only to its target server (agentHost: send each MCP OAuth token only to its target server microsoft/vscode#343026) (75e6bc29961)
• agentHost: bump Copilot SDK to 1.0.24-preview.0 (agentHost: bump Copilot SDK to 1.0.24-preview.0 microsoft/vscode#342779) (979b58ceb7d)
• agentHost: show actual sandbox support failure reasons (agentHost: show actual sandbox support failure reasons microsoft/vscode#343037) (ea64e8b6f3a)
• agentHost: don't arm the model download stall timer while the disk drains the first chunk (fixes flake) (agentHost: don't arm the model download stall timer while the disk drains the first chunk (fixes flake) microsoft/vscode#343053) (480a2bfd4c3)
• agentHost: stop lowering CI timeouts for disk-backed database tests (agentHost: stop lowering CI timeouts for disk-backed database tests microsoft/vscode#342981) (4d500e569ed)
• agentHost: stop the llama-server before each quit in the DFlash persistence test, so the next start finds its lock free (fixes flake) (agentHost: stop the llama-server before each quit in the DFlash persistence test, so the next start finds its lock free (fixes flake) microsoft/vscode#343054) (28c837bfb9e)
• agentHost: handle EPIPE when a Copilot hook exits without reading stdin (fixes toSdkHooks flake) (agentHost: handle EPIPE when a Copilot hook exits without reading stdin (fixes toSdkHooks flake) microsoft/vscode#343042) (ccc3f4f9670)
• agentHost: don't delete a concurrently published Computer Use plugin on install (fixes flake) (agentHost: don't delete a concurrently published Computer Use plugin on install (fixes flake) microsoft/vscode#343051) (face4f0cb8c)

chat (11)

• chat: render
  in markdown table cells as line breaks (chat: render <br> in markdown table cells as line breaks microsoft/vscode#342956) (e0a99e0bcf2)
• Fix model picker search speed (Fix model picker search speed microsoft/vscode#343005) (924c808fbab)
• chat: toggle session list sections on single click (chat: toggle session list sections on single click microsoft/vscode#343028) (6e1db22a29c)
• Make agent file editing harness aware (Make agent file editing harness aware microsoft/vscode#342855) (3c8529100dd)
• chat: keep steering messages visible during host handoff (chat: keep steering messages visible during host handoff microsoft/vscode#342965) (25932b7f856)
• chat: use a frozen history replay clock in ChatService tests that snapshot right after a history change (fixes flake) (chat: use a frozen history replay clock in ChatService tests that snapshot right after a history change (fixes flake) microsoft/vscode#343035) (5ad350d62fc)
• Add Copilot agent file schema support (Add Copilot agent file schema support microsoft/vscode#342887) (b8ab8d384b7)
• chat: stabilize sticky request width during rendering and completion (chat: stabilize sticky request width during rendering and completion microsoft/vscode#342943) (99de5b0aa4f)
• chat: use a tag for permission settings (chat: use a tag for permission settings microsoft/vscode#343044) (225a0fa530c)
• Keep sandbox chat input visible while connecting (Keep sandbox chat input visible while connecting microsoft/vscode#343023) (2ea40b5f0e8)
• chat: explain cloud session startup failures (chat: explain cloud session startup failures microsoft/vscode#343066) (e504a0ea19e)

extensions/copilot (1)

• build(deps): bump hono from 4.13.7 to 4.13.13 in /extensions/copilot (build(deps): bump hono from 4.13.7 to 4.13.13 in /extensions/copilot microsoft/vscode#342951) (e9a9b7df5c0)

dependencies (1)

• Update distro commit (main) (Update distro commit (main) microsoft/vscode#342973) (60187a13d70)

customeditor (1)

• Fix Custom Editor Startup Race (Fix Custom Editor Startup Race microsoft/vscode#342988) (f0b2a092b08)

ci (1)

• ci: skip core test jobs that the changes cannot affect (ci: skip core test jobs that the changes cannot affect microsoft/vscode#342729) (0db0bcecf51)

edittelemetry (1)

• editTelemetry: preserve precise edit survival attribution (editTelemetry: preserve precise edit survival attribution microsoft/vscode#342906) (22440e0276b)

test (1)

• test: wait for focus changes to reach the renderer in InlineEditInputBox tests (test: wait for focus changes to reach the renderer in InlineEditInputBox tests microsoft/vscode#343017) (f44a98dff93)

voice (1)

• voice: preserve specific BYOK connection errors (voice: preserve specific BYOK connection errors microsoft/vscode#343052) (643c824e113)

terminal (1)

• Stream Agent Host shell output without rebuilding the whole transcript (Stream Agent Host shell output without rebuilding the whole transcript microsoft/vscode#343011) (ae7773b323e)

smoke (1)

• smoke: wait for New Local Chat to bind its session before sending in Chat Sessions test (fixes flake) (smoke: wait for New Local Chat to bind its session before sending in Chat Sessions test (fixes flake) microsoft/vscode#343067) (dc0d010a65f)

build (1)

• Engineering - flush pending disk writes before the Linux tests (Engineering - flush pending disk writes before the Linux tests microsoft/vscode#342986) (efac0055efb)

Code changes

Where the changes landed (share of changed files, cumulative)

5.1% src/vs/platform/agentHost/common/
   2.5% src/vs/platform/agentHost/node/copilot/
   6.5% src/vs/platform/agentHost/node/
  10.2% src/vs/platform/agentHost/test/node/
  10.9% src/vs/platform/agentHost/test/
  23.0% src/vs/platform/agentHost/
   2.1% src/vs/platform/github/
  25.6% src/vs/platform/
   3.6% src/vs/sessions/contrib/chat/
   2.9% src/vs/sessions/contrib/providers/
   2.9% src/vs/sessions/contrib/sessions/test/browser/
   4.7% src/vs/sessions/contrib/sessions/
  13.1% src/vs/sessions/contrib/
   2.9% src/vs/sessions/services/sessions/
   3.6% src/vs/sessions/services/
  18.6% src/vs/sessions/
   2.5% src/vs/workbench/api/
   2.9% src/vs/workbench/contrib/chat/browser/agentSessions/agentHost/
   3.2% src/vs/workbench/contrib/chat/browser/agentSessions/
   4.3% src/vs/workbench/contrib/chat/browser/remoteAgentHost/
   2.9% src/vs/workbench/contrib/chat/browser/widget/
  13.1% src/vs/workbench/contrib/chat/browser/
   2.1% src/vs/workbench/contrib/chat/common/promptSyntax/languageProviders/
   3.2% src/vs/workbench/contrib/chat/common/promptSyntax/
   5.4% src/vs/workbench/contrib/chat/common/
   3.6% src/vs/workbench/contrib/chat/test/browser/agentSessions/
   2.5% src/vs/workbench/contrib/chat/test/browser/remoteAgentHost/
   2.5% src/vs/workbench/contrib/chat/test/browser/widget/
  12.0% src/vs/workbench/contrib/chat/test/browser/
  13.5% src/vs/workbench/contrib/chat/test/
  32.2% src/vs/workbench/contrib/chat/
   2.1% src/vs/workbench/contrib/editTelemetry/browser/
   2.1% src/vs/workbench/contrib/editTelemetry/test/browser/
   4.3% src/vs/workbench/contrib/editTelemetry/
   2.1% src/vs/workbench/contrib/terminal/
  42.1% src/vs/workbench/contrib/
   2.5% src/vs/workbench/services/
  47.6% src/vs/workbench/
  94.5% src/vs/

Largest file changes

File	+	−
src/vs/sessions/contrib/sessions/browser/views/sessionsList.ts	700	211
src/vs/sessions/contrib/sessions/test/browser/sessionsList.test.ts	574	7
src/vs/workbench/contrib/chat/test/browser/remoteAgentHost/cloudSandboxApiService.test.ts	499	4
src/vs/sessions/contrib/providers/remoteAgentHost/test/browser/cloudSandboxAgentHostContribution.test.ts	467	10
src/vs/workbench/contrib/chat/common/promptSyntax/languageProviders/promptValidator.ts	429	34
src/vs/workbench/contrib/chat/test/browser/promptSyntax/languageProviders/promptHeaderAutocompletion.test.ts	432	0
src/vs/sessions/services/sessions/browser/sessionGroupsService.ts	323	32
src/vs/workbench/contrib/editTelemetry/test/browser/editSourceTrackingImpl.test.ts	347	6
src/vs/sessions/contrib/providers/copilotChatSessions/test/browser/copilotChatSessionsProvider.test.ts	344	1
src/vs/workbench/contrib/chat/test/browser/promptSyntax/languageProviders/promptValidator.test.ts	328	2
src/vs/workbench/contrib/chat/test/browser/remoteAgentHost/cloudSandboxSessionFeed.test.ts	318	0
src/vs/workbench/contrib/customEditor/browser/customEditors.ts	157	141
src/vs/workbench/contrib/chat/test/browser/agentSessions/agentHostSteeringMessageHandoff.test.ts	291	0
src/vs/platform/agentHost/test/node/agentHostChangesetService.test.ts	144	130
src/vs/workbench/contrib/chat/test/browser/agentSessions/agentHostChatContribution.test.ts	264	5
.github/workflows/pr.yml	181	80
src/vs/workbench/contrib/chat/test/browser/agentSessions/agentHostAuth.test.ts	224	30
src/vs/workbench/contrib/chat/common/promptSyntax/languageProviders/promptHeaderAutocompletion.ts	225	26
src/vs/platform/agentHost/test/common/agentPlanReview.test.ts	249	0
src/vs/workbench/contrib/chat/common/promptSyntax/languageProviders/promptFileAttributes.ts	195	21
build/lib/test/detectChanges.test.ts	200	0
src/vs/workbench/contrib/chat/browser/remoteAgentHost/cloudSandboxApiService.ts	174	18
src/vs/workbench/contrib/chat/test/browser/widget/chatWidget.test.ts	182	8
src/vs/sessions/contrib/sessionInputBanners/test/browser/sessionWorktreeCleanupEditor.test.ts	174	0
src/vs/sessions/services/sessions/test/browser/sessionGroupsService.test.ts	171	1
src/vs/sessions/contrib/sessions/test/browser/sessionsList.fixture.ts	162	1
src/vs/workbench/contrib/chat/test/browser/promptSyntax/languageProviders/promptHovers.test.ts	161	2
src/vs/workbench/contrib/chat/browser/remoteAgentHost/cloudSandboxSessionFeed.ts	158	0
src/vs/sessions/contrib/sessions/browser/views/sessionsViewActions.ts	109	41
src/vs/workbench/contrib/chat/browser/remoteAgentHost/cloudSandboxSessionContribution.ts	125	22
src/vs/workbench/contrib/chat/test/browser/widget/chatListWidget.test.ts	137	6
src/vs/workbench/contrib/chat/browser/agentSessions/agentHost/agentHostSteeringMessageHandoff.ts	138	0
src/vs/workbench/contrib/chat/test/browser/remoteAgentHost/cloudSandboxStartupError.test.ts	134	0
src/vs/workbench/contrib/chat/browser/remoteAgentHost/cloudSandboxStartupError.ts	133	0
src/vs/platform/agentHost/test/node/agentEditAttributionService.test.ts	126	3
src/vs/workbench/contrib/chat/browser/agentSessions/agentHost/agentHostSessionHandler.ts	38	88
src/vs/platform/agentHost/common/meta/agentPlanReview.ts	124	0
src/vs/workbench/contrib/editTelemetry/test/browser/documentWithAnnotatedEdits.test.ts	114	9
src/vs/sessions/contrib/providers/copilotChatSessions/browser/copilotChatSessionsProvider.ts	106	12
src/vs/workbench/contrib/terminal/browser/agentHostOutputChannel.ts	101	12
… 233 more files

All commits

SHA	Date	Author	Subject
2c225c37d87	2026-10-20	Megan Rogge	sessions: use compare icon for model comparisons (microsoft#342960)
e9a9b7df5c0	2026-10-20	dependabot[bot]	build(deps): bump hono from 4.13.7 to 4.13.13 in /extensions/copilot (microsoft#342951)
146fb975be8	2026-10-20	benibenj	sessions: group the sessions list by repository
7317db17ac4	2026-10-20	roblourens	agentHost: support Copilot host plan reviews (microsoft#342953)
e0a99e0bcf2	2026-10-20	Alexandru Dima	chat: render in markdown table cells as line breaks (microsoft#342956)
60187a13d70	2026-10-20	vs-code-engineering[bot]	Update distro commit (main) (microsoft#342973)
f0b2a092b08	2026-10-20	Logan Ramos	Fix Custom Editor Startup Race (microsoft#342988)
74c426eb91f	2026-10-20	Justin Chen	change assisted permissions badge from experimental to new (microsoft#342998)
b5e0e90c489	2026-10-20	benibenj	sessions: support nested custom groups
16f7e34618f	2026-10-20	Osvaldo Ortega	sessions: stop chat updates during view disposal (microsoft#343015)
924c808fbab	2026-10-20	Logan Ramos	Fix model picker search speed (microsoft#343005)
61c4648971f	2026-10-20	Sandeep Somavarapu	sessions: cover returning the only quick chat to an empty Chats section (microsoft#343025)
422a035bc87	2026-10-20	Alexandru Dima	agentHost: await changeset signals instead of polling timers in changeset service tests (microsoft#342992)
6e1db22a29c	2026-10-20	Sandeep Somavarapu	chat: toggle session list sections on single click (microsoft#343028)
d8087e2addc	2026-10-20	benibenj	sessions: own nested group placement in the groups service
3c8529100dd	2026-10-20	Martin Aeschlimann	Make agent file editing harness aware (microsoft#342855)
25932b7f856	2026-10-20	roblourens	chat: keep steering messages visible during host handoff (microsoft#342965)
4fab110fc14	2026-10-20	benibenj	sessions: allow the group path separator past hygiene
9303c10ca8a	2026-10-20	Megan Rogge	agentHost: fix worktree measurement errors for .asar paths (microsoft#343030)
fcdfc36cda8	2026-10-20	Alexandru Dima	sessions: preserve custom group collapse state across restarts (microsoft#342848)
f8709721a8a	2026-10-20	Megan Rogge	sessions: simplify the workspace clear button styling (microsoft#343031)
5ad350d62fc	2026-10-20	Alexandru Dima	chat: use a frozen history replay clock in ChatService tests that snapshot right after a history change (fixes flake) (microsoft#343035)
75e6bc29961	2026-10-20	Connor Peet	agentHost: send each MCP OAuth token only to its target server (microsoft#343026)
6374eaa1381	2026-10-20	roblourens	sessions: discover cloud sandboxes through Mission Control push updates (microsoft#342999)
979b58ceb7d	2026-10-20	roblourens	agentHost: bump Copilot SDK to 1.0.24-preview.0 (microsoft#342779)
465bd66ccb4	2026-10-20	Osvaldo Ortega	sessions: keep drafts when cloud creation fails (microsoft#343029)
0db0bcecf51	2026-10-20	Bryan Chen	ci: skip core test jobs that the changes cannot affect (microsoft#342729)
22440e0276b	2026-10-20	Aaron Munger	editTelemetry: preserve precise edit survival attribution (microsoft#342906)
b8ab8d384b7	2026-10-21	Martin Aeschlimann	Add Copilot agent file schema support (microsoft#342887)
99de5b0aa4f	2026-10-20	Justin Chen	chat: stabilize sticky request width during rendering and completion (microsoft#342943)
f44a98dff93	2026-10-20	Bryan Chen	test: wait for focus changes to reach the renderer in InlineEditInputBox tests (microsoft#343017)
6dc1a0ff34b	2026-10-21	benibenj	Merge origin/main into agents/sessions-list-nested-custom-groups
c3890577dad	2026-10-21	Benjamin Christopher Simmonds	sessions: group the sessions list by repository (microsoft#342997)
64ea39c1745	2026-10-20	Megan Rogge	sessions: simplify worktree cleanup controls and fix picker cursor (microsoft#343043)
c4b36a839ce	2026-10-21	benibenj	Merge origin/main into agents/sessions-list-nested-custom-groups
ea64e8b6f3a	2026-10-20	Dileep Yavanmandha	agentHost: show actual sandbox support failure reasons (microsoft#343037)
231f650c507	2026-10-21	benibenj	sessions: test that moving a header keeps other groups' subgroup order
225a0fa530c	2026-10-20	Justin Chen	chat: use a tag for permission settings (microsoft#343044)
480a2bfd4c3	2026-10-21	Alexandru Dima	agentHost: don't arm the model download stall timer while the disk drains the first chunk (fixes flake) (microsoft#343053)
4d500e569ed	2026-10-20	Bryan Chen	agentHost: stop lowering CI timeouts for disk-backed database tests (microsoft#342981)
643c824e113	2026-10-20	Megan Rogge	voice: preserve specific BYOK connection errors (microsoft#343052)
ae7773b323e	2026-10-20	Anthony Kim	Stream Agent Host shell output without rebuilding the whole transcript (microsoft#343011)
dc0d010a65f	2026-10-21	Alexandru Dima	smoke: wait for New Local Chat to bind its session before sending in Chat Sessions test (fixes flake) (microsoft#343067)
28c837bfb9e	2026-10-21	Alexandru Dima	agentHost: stop the llama-server before each quit in the DFlash persistence test, so the next start finds its lock free (fixes flake) (microsoft#343054)
e5a32e282ba	2026-10-21	Alexandru Dima	sessions: wait for a done nested chat to move to the Done section in the primary action test (fixes flake) (microsoft#343061)
2ea40b5f0e8	2026-10-20	Osvaldo Ortega	Keep sandbox chat input visible while connecting (microsoft#343023)
ccc3f4f9670	2026-10-21	Alexandru Dima	agentHost: handle EPIPE when a Copilot hook exits without reading stdin (fixes toSdkHooks flake) (microsoft#343042)
e504a0ea19e	2026-10-20	Osvaldo Ortega	chat: explain cloud session startup failures (microsoft#343066)
b758264bbd6	2026-10-20	Megan Rogge	sessions: clarify comparison setup navigation (microsoft#343040)
face4f0cb8c	2026-10-21	Alexandru Dima	agentHost: don't delete a concurrently published Computer Use plugin on install (fixes flake) (microsoft#343051)
efac0055efb	2026-10-20	Bryan Chen	Engineering - flush pending disk writes before the Linux tests (microsoft#342986)
f75da500219	2026-10-21	Benjamin Christopher Simmonds	sessions: support nested custom groups (microsoft#343024)

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