Add gitUrl and gitBranch fields to kilo_meta so shared sessions
include repository context. Resolves the best remote (origin > single
available > upstream) and fetches the URL with a 10s in-flight cache.
Unify ingest queue and session close reasons via `Session.CloseReason` and
ensure `TurnOpen`/`TurnClose` publishing is awaited; mark close reason as
`error` on unexpected exceptions and handle abort-induced stops correctly.
Add ingest queue tests for stable-key coalescing of session open/close and for
including `?v=1` on flush requests.
Wrap callback execution in a promise microtask so synchronous errors flow
through the existing `.catch()` and the in-flight entry is reliably cleaned
up. Update tests to await the microtask before asserting call count.
Always return the in-flight promise when a refresh is running so callers
don’t receive an expired cached value. Preserve the original timestamp
until refresh succeeds and only update it on successful recompute to
avoid masking failed refreshes.
Evgeny Shurakov