* Simplify Android ConnStatus API with integer constants
Replace dual field PeerInfo design with unified integer based
ConnStatus field and exported gomobile friendly constants.
Changes:
> PeerInfo.ConnStatus: changed from string to int
> Export three constants: ConnStatusIdle, ConnStatusConnecting,ConnStatusConnected (mapped to peer.ConnStatus enum values)
> Updated PeersList() to convert peer enum directly to int
Benefits:
> Simpler API surface with single ConnStatus field
> Better gomobile compatibility for cross-platform usage
> Type-safe integer constants across language boundaries
* test: add All group to setupTestAccount fixture
The setupTestAccount() test helper was missing the required "All" group,
causing "failed to get group all: no group ALL found" errors during
test execution. Add the All group with all test peers to match the
expected account structure.
Fixes the failing account and types package tests when GetGroupAll()
is called in test scenarios.
