Pure rename to enable subsequent splits into focused submodules. No
behavior change: 34 invoke handler refs in lib.rs and 2 use statements
in commands_v2/queue.rs updated from qconnect_service:: to qconnect::.
Foundation for the qconnect_service.rs → qconnect/ module split: the
file is 6371 lines and mixes 12 distinct responsibilities (types,
session topology, event sink, queue resolution, corebridge bridging,
track loading, transport, Tauri commands, etc). Splitting into focused
submodules makes the area navigable for both authors and reviewers,
enables independent reasoning per concern, and creates a clean target
for the eventual qbz-qconnect-proto crate extraction.
cc
vicrodh
fc5cd6efc7