[lATAl]

Problem

Umbrella roots can omit the :app entry in mix.exs, as shown in the official Elixir guide. For these projects, Pi.Bridge.Info returns nil for the project application, which becomes project: null in the JSON ready message.

The extension only accepts project as a string or an omitted field. It rejects this valid handshake, leaving the embedded bridge stuck in the starting state.

Changes

• Allow BridgeInfo.project to be a string, null, or omitted in both the TypeScript type and the runtime schema.
• Extend protocol tests to accept project: null while continuing to reject invalid values such as numbers.
• Add an integration test that starts the bridge against a temporary umbrella project, verifies project: null in the ready handshake, and runs an AST search.

[dannote]

Great finds, thank you for the fixes and regression tests! All three merged.