Migrate skeleton to Foundation 3 runtime lifecycle

[abmmhasan]

Summary

Migrate the InfByte application skeleton to the finalized Foundation 3 runtime architecture.

• target the Foundation 3 integration branch until the 3.0 tag is published
• use explicit app.capabilities topology instead of implicit optional-package activation
• remove Foundation 2 resolver/route-cache switches and directory layout
• delegate production native HTTP adaptation and response emission to the trusted Foundation/Webrick release runtime
• build one immutable web/CLI/worker/scheduler generation through optimize
• pass trusted release metadata to the built-in development server
• update deployment guidance, archive filters, and release-generation tests
• preserve Foundation::web() / Application::handle() only for embedded/testing convenience

This PR is intentionally draft while Foundation 3 itself is still on foundation-3/runtime-architecture-plan. The dependency constraint should become ^3.0 when Foundation 3 is tagged.