Migrate runtime dependencies to Foundation v2 #3

Type: maintenance
Priority: high
Area: runtime and CI

Wormhole still resolves Foundation v1 and Warp v1 through its dependency graph. Move the runtime to the supported v2 modules and apply the same verification gates used by Foundation.

Acceptance criteria:

• Foundation imports and module requirements use v2.
• Slipstream and Warp resolve only their v2 module paths.
• Build, tests, race tests, vet, Foundation checks, and vulnerability scans pass.
• CI runs blocking EUProvGuard compliance checks.
• README and dependency documentation match the released versions.
• A verified pull request targets main.