session.summary is always a truthy object with files defaulting to 0
until the server populates real counts, so the session list always
rendered "· 0 files" regardless of actual changes. SessionInfo.tsx
already guards on `summary.files > 0`; apply the same guard in the
session list so it no longer shows a count that is never accurate.
Note: this does not make the count itself accurate — session.summary
is populated server-side and the opencode server currently never
updates it after a session runs. Showing correct counts needs either
a server-side fix or client-side aggregation from session message
parts; this PR only removes the always-wrong "0 files" text.
Partially addresses #55
Co-authored-by: engineer <engineer@macbookpro.lan>
36421b4d30