fix(package): remove broken browser session commands

[John-David Dalton (jdalton)]

LLM Description written by HARNESS:Codex:GPT-6

Summary

• Remove browser session commands that point to a missing entry script.
• Keep the existing browser advice, bridge, and setup commands.

Validation

• Focused script-path and entry-script checks pass locally.
• The citation check still needs the refreshed Wheelhouse pack.

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Note

Low Risk
Only deletes invalid npm script entries in package.json; no runtime or build behavior changes.

Overview
Removes four broken pnpm scripts (browser:restart, browser:start, browser:status, browser:stop) that invoked scripts/fleet/browser/session/run.mts, which is not present in the repo.

Browser-related scripts that remain (browser:advice, browser:bridge, browser:open-setup) are unchanged. This is a package.json hygiene fix so consumers no longer hit missing-entry-script failures when running the removed commands.

^{Reviewed by Cursor Bugbot for commit e43c807. Configure here.}

[John-David Dalton (jdalton)]

[agent] Superseded by standalone PR #226 so the script-path fix can run checks against main and unblock both #221 and #219.