* fix(cli): route share links through Kilo session API
Refactor shareSession and unshareSession to return Effect values using
EffectBridge.fromPromise and replace the ShareNext dependency in
SessionShare with KiloSession calls so CLI-generated share URLs point
to app.kilo.ai/s/ public links.
* test(session-share): replace EffectBridge usage with direct Storage service calls
Update session-share test to use Storage.Service directly instead of
wrapping Storage.write in EffectBridge.fromPromise, aligning test code
with the refactored service-based architecture. Add Storage.defaultLayer
to the test effect layer composition.