flake.nix now uses self.shortRev (git HEAD short hash) as the derivation
version, so the store path is /nix/store/<hash>-9router-<shortsha> and any
deployed build traces to its exact source commit. Removes the package.json
version bump churn; the updater's deployed/current comparison switches to
git SHA.
Migrate the Nix build + deploy source from /home/code/9router-repo (a pure
upstream mirror, now deleted) to this repo, which carries the MIBP fork
merge (freebuff, cline free models, proxy-pool fitness). flake.lock and
flake.nix copied verbatim from 9router-repo; bun.lock generated from the
merged dependency set. The cron updater (9router-update.sh) now points at
/home/code/9router with a keep-ours conflict policy.
asepharyana