Detect CLIs as shell type

[anthonykim1]

Resolves: #290830

Claude Code, Copilot CLI, and Gemini CLI all send OSC titles, which we would use when setting is enabled.

• Codex does not. Will file request to have them set osc titles as they are useful identifier when different clis are being used across.

• Gemini CLI has inconsistency of what they set the terminal title to when comparing Windows vs. Mac.

MacOS:

Limitation for MacOS) We don't detect codex as shell type maybe in future once we have process tree walk through like windows.

Windows:

• Note that the "PWD" title on codex on Windows is the same you will see on Ghostty on Mac and also Windows terminal

[Copilot]

Pull request overview

Adjusts terminal shell-type detection and tab-title computation to better support “agent CLI” terminals (eg Copilot/Claude/Codex/Gemini), so their own escape-sequence-provided title (${sequence}) can be used instead of long process-based titles.

Changes:

• Add new GeneralShellType values for agent CLIs and map them from process titles.
• Override terminal tab title template to ${sequence} for agent CLI shell types (unless shellLaunchConfig.titleTemplate is set).
• Extend unit tests to cover the new title-template override behavior.

Reviewed changes

Copilot reviewed 5 out of 5 changed files in this pull request and generated 3 comments.

Show a summary per file

File	Description
src/vs/workbench/contrib/terminal/test/browser/terminalInstance.test.ts	Adds tests for agent-CLI ${sequence} title override and precedence rules.
src/vs/workbench/contrib/terminal/browser/terminalInstance.ts	Refreshes labels on shell-type change; adds agent-CLI shell-type override to ${sequence}.
src/vs/platform/terminal/node/windowsShellHelper.ts	Adds agent CLI executables/scripts to the Windows process-tree “shell executable” list.
src/vs/platform/terminal/node/terminalProcess.ts	Adds agent CLI shell-type mappings and normalizes shell-type lookup to lowercase; includes new debug logging.
src/vs/platform/terminal/common/terminal.ts	Introduces new GeneralShellType enum members for agent CLIs.

[Copilot]

Pull request overview

This PR extends terminal “shell type” detection to recognize agent CLIs (eg Copilot/Gemini) and uses their OSC title/sequence to improve terminal tab titles when the foreground process is otherwise indistinguishable (often just node).

Changes:

• Add new GeneralShellType values for agent CLIs and map them from process titles.
• Detect agent CLIs from OSC title sequences in TerminalInstance, suppressing misleading node/undefined shell type updates while the agent is running.
• Override terminal tab title templating to prefer ${sequence} for agent CLIs (and for node when an OSC title is present), with new unit tests.

Show a summary per file

File	Description
src/vs/workbench/contrib/terminal/test/browser/terminalInstance.test.ts	Adds unit coverage for ${sequence} title overrides for agent CLIs and node+OSC-title.
src/vs/workbench/contrib/terminal/browser/terminalInstance.ts	Implements OSC-title-based agent CLI detection and tab label template overrides.
src/vs/platform/terminal/node/windowsShellHelper.ts	Adds agent CLI entries to Windows process-tree “shell executable” list.
src/vs/platform/terminal/node/terminalProcess.ts	Adds agent CLI mappings to general shell type detection; normalizes case in one code path.
src/vs/platform/terminal/common/terminal.ts	Introduces new GeneralShellType enum values for agent CLIs.

Copilot's findings

• Files reviewed: 5/5 changed files
• Comments generated: 4

[anthonykim1]

/cc @meganrogge