fix(web): unwrap windows shell command wrappers

[justsomelegs]

What Changed

Fixes #1671.

This PR normalizes command activity previews so the UI shows the meaningful inner command instead of the shell wrapper used to launch it.

Specifically:

• command preview extraction now unwraps common shell launcher patterns such as PowerShell -Command, cmd /c, and POSIX shell -c / -lc
• Windows full-path PowerShell launches like "C:\Program Files\PowerShell\7\pwsh.exe" -NoLogo -NoProfile -Command ... now display just the inner command
• command activity preview extraction now falls back to normalized detail text for command_execution items when structured command metadata is missing

I also added focused regression coverage for:

• quoted full-path PowerShell wrapper commands
• argv-style PowerShell command payloads
• the screenshot-style case where the wrapper only appears in payload.detail

Why

On Windows, Codex command activity can be reported through a shell wrapper such as:

"C:\Program Files\PowerShell\7\pwsh.exe" -Command "rg ..."

The UI was surfacing that raw wrapper command directly in the activity preview, which hides the actual command the user cares about.

This change keeps execution untouched and only fixes the display layer. The normalization lives in session-logic.ts, where work log entries are already derived for rendering, so the UI can consistently show the real command without changing provider/runtime behavior.

UI Changes

Checklist

• This PR is small and focused
• I explained what changed and why
• I included before/after screenshots for any UI changes
• I included a video for animation/interaction changes

Note

Unwrap Windows shell command wrappers in work log entry command extraction

• Adds normalizeCommandValue logic to strip known shell wrappers (e.g. PowerShell -Command, cmd /c) so displayed commands reflect the underlying invoked command rather than the wrapper.
• Extends extractToolCommand in session-logic.ts to support argv-style inputs, fall back to detail text for command_execution items, and return both a normalized command and an optional rawCommand when they differ.
• Adds rawCommand to the WorkLogEntry interface and propagates it through toDerivedWorkLogEntry and mergeDerivedWorkLogEntries.
• Shows the raw (pre-normalization) command in a tooltip on hover in SimpleWorkEntryRow when rawCommand differs from the displayed command.

^{Macroscope summarized 5c398b4.}

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[macroscopeapp]

Approvability

Verdict: Approved

This PR improves command display in the UI by unwrapping shell wrapper commands (PowerShell, cmd, bash) to show cleaner text while preserving the original in a tooltip. The changes are purely presentational string parsing with comprehensive test coverage and no runtime behavior impact.

^{You can customize Macroscope's approvability policy. Learn more.}

[juliusmarminge]

i feel like we should surface the full command somewhere, perhaps as a tooltip when you hover or something? sometimes you get weird states where the agent saying certain commands are not recognizable etc and then it's useful knowing the full command it ran so you can tell more about the shell env etc

Dismissing prior approval to re-evaluate 1ad9158

[justsomelegs]

added that tooltip on hover of formatted commands