[Upstream PR #149] fix: embed firefox native host for browser setup

[quangdang46]

Mirrored from upstream 1jehuang/jcode — Pull Request #149 by @ahamed40444
Original state: open
Created: 2026-05-06T19:42:31Z · Updated: 2026-05-06T19:42:51Z
Diff: https://github.com/1jehuang/jcode/pull/149.diff
This issue is an auto-mirrored copy. Comments and edits here are local to quangdang46/jcode — do not expect them to propagate upstream.

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Fixes #140.

Summary:

• Adds embedded Firefox native messaging host mode to jcode.
• Makes jcode browser setup create firefox-agent-bridge-host.exe from the running jcode binary when no upstream
  host asset exists.
• Registers the generated native host path instead of failing on Windows.
• Rejects stale manifests that point at browser.exe.
• Adds focused tests for host path/materialization behavior.

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