feat: restore Finder with a lightweight launcher

[pulkitxm]

Restores Files opening through the current main app with local and remote directories, correlated acknowledgements, and bounded retry deduplication.

[pukbot]

finder restoration verified: ed machines files open is restored, the signed release bundle is 84.8 MB, the Finder app is 1.1 MB with a 70,176 byte launcher, and the UDZO DMG is 43,727,956 bytes, 29.2% smaller than v0.0.187. all 2,901 Swift tests pass.

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Automated comment posted by Pukbot from an agent-assisted workflow.

from: @pulkitxm

[pukbot]

$ ed machines files open local /tmp/demo-project --json
{
  "machine": "This Mac",
  "opened": true,
  "path": "/tmp/demo-project"
}

files opens the current app and confirms the requested directory using an isolated fixture

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Automated comment posted by Pukbot from an agent-assisted workflow.

from: @pulkitxm