Shells now emit OSC 9001;ShellType;<name>;<version> on every prompt so
the terminal always knows which shell owns a pane, even after a nested
shell (pwsh -> wsl -> exit) returns. Replicates the WorkingDirectory data
flow: adaptDispatch -> ITerminalApi::SetShellType -> Terminal -> ControlCore
-> ICoreState -> TermControl -> PaneInfo -> COM JSON (shell/shell_version),
so wtcli list-panes / get-active-pane expose the live shell per pane.

PowerShell reports pwsh/powershell; bash reports bash or wsl:<distro>.

Fixes autofix recommending PowerShell commands in a WSL/bash pane: the
autofix Shell Context now prefers the OSC-reported shell over the
pid-based process-image lookup, which can't see the real foreground shell
inside a nested wsl/pwsh host process.

Also removes the dead OSC 9001 WtaReq/WtaRes in-band handler (superseded
by the out-of-band COM IProtocolServer channel).

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

- TerminalApi.cpp: make the one-shot ShellType telemetry gate race-free
  (function-static logged is shared across Terminal instances holding
  different locks; switch to std::atomic<bool>::exchange).
- Remove dangling references to the deleted
  doc/specs/shell-integration-and-osc9001.md spec from code comments
  (adaptDispatch.cpp, BashShellIntegration.h, client.rs).

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

Add a WSL-gated Describe to Feature.AutofixPane that exercises OSC
9001;ShellType end-to-end: Case 1 (deterministic) asserts a WSL pane
self-reports shell=wsl:<distro> through the protocol (scoped by tab id,
since list-panes is active-tab scoped); Case 2 (AI oracle) verifies
autofix suggests Linux/bash syntax, not PowerShell, in a WSL pane. The
whole Describe skips unless a dev package + copilot + winapp + a runnable
WSL distro are present.

Framework fix: UI-dependent suites gated only on package/copilot would
throw a raw 'winapp not found' in BeforeAll when the Windows App CLI
isn't installed, instead of skipping. Add a non-throwing
Test-WinAppAvailable helper (exported) and fold winapp into the readiness
gates of every agent-pane / FRE-overlay suite. Packaging keeps its §9
protocol Describe runnable without winapp; only the §10 UI Describe is
winapp-gated.

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

…s existing users

The OSC 9001;ShellType emission was added to the v1 shell-integration
scripts without bumping kVersion. The install orchestrator's block-match
early-out (ShellIntegrationCommon.h:414) only rewrites the on-disk script
when the \C:\Users\kaitao\OneDrive - Microsoft\Documents\PowerShell\Microsoft.PowerShell_profile.ps1/.bashrc sourcing block changes or the script file is
missing. Since the block embeds the versioned filename and the filename
was unchanged, existing users kept their stale v1 script (no ShellType)
and the feature silently never reached them — verified live: a pwsh pane
reported shell='' until the bump.

Bump both PowerShell and Bash (WSL inherits via WslBashFlavor) to v2 so
the block changes -> the orchestrator rewrites the script in place.
Verified end-to-end: after deploy, shell-integration_v2.ps1 is written
with the 9001 emission, the profile block is rewritten to reference it
(with a backup), and a pwsh pane now reports shell='pwsh' 7.4.14.

Add regression tests Install_/Bash_Install_UpgradesWhenBlockReferences-
OlderScriptVersion: a managed block pointing at an older script version
plus a stale on-disk script must upgrade (alreadyInstalled=false), and
the rewritten script must contain the OSC 9001 emission.

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

The feature and self-test Describes hardcoded -Package Store in their
BeforeAll/It launch calls, so on a dev-only machine (only the sideload
package installed) they could not run as-written. Route every launch
through a new Get-ItTestPackage selector that honors the ITE2E_PACKAGE
env var and defaults to Auto (prefer a resolvable Store install, else
Dev). Start-TerminalFre's default param now uses the same selector.

This lets the whole suite validate against the dev build without edits;
set ITE2E_PACKAGE=Store to pin to the store build in CI.

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

…eout

The Insert and Run autofix retry loops wrapped Wait-Autofix in try/finally
WITHOUT a catch, so a single 45s Wait-Autofix timeout propagated and failed
the test before the loop could try the next typo or reach the LLM-variance
skip guard. The sibling card-render loop already swallows this with an empty
catch. Add the same catch so an explain-only (no-card) run skips instead of
hard-failing, matching the documented LLM-variance behavior.

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>