Stuck stating tools at the beginning of a new session

Type: Performance Issue

so I provide system prompt and it got stuck saying "starting tools" or soemething like that

Extension version: 0.31.0
VS Code version: Code 1.111.0 (ce099c1ed25d9eb3076c11e4a280f3eb52b4fbeb, 2026-03-06T23:06:10Z)
OS version: Windows_NT x64 10.0.19045
Modes:

System Info

|Item|Value|
|---|---|
|CPUs|Intel(R) Core(TM) i3-6100T CPU @ 3.20GHz (4 x 3192)|
|GPU Status|2d_canvas: enabled
GPU0: VENDOR= 0x8086, DEVICE=0x1912 [Intel(R) HD Graphics 530], DRIVER_VENDOR=Intel, DRIVER_VERSION=26.20.100.7156 *ACTIVE*
GPU1: VENDOR= 0x1414, DEVICE=0x008c [Microsoft Basic Render Driver], DRIVER_VERSION=10.0.19041.5794
Machine model name:
Machine model version:
direct_rendering_display_compositor: disabled_off_ok
gpu_compositing: enabled
multiple_raster_threads: enabled_on
opengl: enabled_on
rasterization: enabled
raw_draw: disabled_off_ok
skia_graphite: disabled_off
trees_in_viz: disabled_off
video_decode: enabled
video_encode: enabled
webgl: enabled
webgl2: enabled
webgpu: enabled
webnn: disabled_off|
|Load (avg)|undefined|
|Memory (System)|7.88GB (1.43GB free)|
|Process Argv|--folder-uri file:///c%3A/code/ForeSight --crash-reporter-id 2c2e99a6-4d7c-471a-a430-b375d217533c|
|Screen Reader|no|
|VM|0%|

Process Info

```
CPU % Mem MB PID Process
0 107 21656 code
0 126 4832 gpu-process
0 279 7192 window [1] (foresight_system_prompt.md - ForeSight - Visual Studio Code)
0 77 11960 utility-process
0 98 12724 pty-host
0 8 10372 conpty-agent
0 52 11780 C:\WINDOWS\System32\WindowsPowerShell\v1.0\powershell.exe -noexit -command "try { . \"c:\Users\howardon\AppData\Local\Programs\Microsoft VS Code\ce099c1ed2\resources\app\out\vs\workbench\contrib\terminal\common\scripts\shellIntegration.ps1\" } catch {}"
0 85 17608 file-watcher [1]
0 28 18332 crashpad-handler
0 128 18764 shared-process
0 44 19620 utility-network-service
0 187 21920 extension-host [1]
0 115 800 electron-nodejs (bundle.js)
0 8 7860 c:\Users\howardon\.vscode\extensions\ms-python.vscode-python-envs-1.22.0-win32-x64\python-env-tools\bin\pet.exe server
0 7 14156 C:\WINDOWS\system32\conhost.exe 0x4
0 88 20320 "C:\Users\howardon\AppData\Local\Programs\Microsoft VS Code\Code.exe" "c:\Users\howardon\AppData\Local\Programs\Microsoft VS Code\ce099c1ed2\resources\app\extensions\markdown-language-features\dist\serverWorkerMain" --node-ipc --clientProcessId=21920
```

Workspace Info

```
| Window (foresight_system_prompt.md - ForeSight - Visual Studio Code)
| Folder (ForeSight): 2 files
| File types: md(2)
| Conf files:;
```

A/B Experiments

```
vsliv368cf:30146710
vswsl492cf:30256860
binariesv615:30325510
nativeloc1:31344060
dwcopilot:31170013
dwoutputs:31242946
copilot_t_ci:31333650
e5gg6876:31282496
pythonrdcb7:31342333
6518g693:31463988
aj953862:31281341
6abeh943:31336334
envsactivate1:31464700
cloudbuttont:31379625
aihoversummaries_f:31469309
42190218_ostrepl:31403339
use-responses-api:31390855
anonusage:31403420
ddidtcf:31399634
je187915:31401254
ec5jj548:31422691
cp_cls_t_966_ss:31454198
4je02754:31466945
ge8j1254_inline_auto_hint_haiku:31427726
nes-autoexp-off:31446584
38bie571_auto:31426784
7a04d226_do_not_restore_last_panel_session:31438103
cp_cls_c_1081:31454833
ia-use-proxy-models-svc:31452481
a43f0575b:31442825
e9c30283:31461165
test_treatment2:31471001
nes-conv-2-3:31474331
control_6dc23131:31467998
idci7584:31464702
edit_mode_hidden:31461530
864ei723_large_tool_results_to_disk:31460878
showingstats:31471631
55364912:31471672
chat:31457767
8hig5102:31473806
grok_6ec3c140:31477193
nes-rcnt-ctrl:31471618
bg_compact_c:31476251
cpptoolson-v2:31475363
f0268191:31471593
noaffordance1:31474146
db0gd219:31473911
newsessionicon:31473927
nes-notsn-1:31475122

```

No files, tests, or entry points are named. Start by reproducing the new-session flow with the reported system prompt on the listed extension and VS Code versions, then trace where the UI remains at “starting tools.” Done means the stuck state is explained and a verified regression test or reproduction check confirms it no longer occurs.

由索引模型根據 Issue 內容生成。