feat(ipc): add project aliases for groups

[edwin-zvs]

Summary

• add project-named IPC methods and notifications as compatibility aliases over the existing group storage
• add project-named protocol/client request and notification payloads using project_id on new wire shapes
• move TUI/web clients toward project.* calls and project-facing labels while still accepting legacy group notifications/inputs

Closes #227.

Tests

• cargo test -p agentd-protocol project_compat_tests
• cargo test -p agentd-cli reconnect
• cargo check -p agentd
• git diff --check
• cargo build