The bank id used to be hashed from
`git.repo.resolveSync(cwd)?.repoRoot ?? path.resolve(cwd)`, so adding or
removing a `.git` anywhere above the working directory silently
repointed the same conversation to a new bank and stranded its
memories. Same cwd `/home/x/projects/repo` flipped between
`projects-<hash>` and `repo-<hash>` depending on whether the parent
directory still looked like a repo.
`packages/coding-agent/src/mnemopi/config.ts` now hashes
`path.resolve(cwd)` directly. Session startup also widens the recall
set with any sibling bank under `<dbDir>/banks/` whose
`working_memory` rows already carry the active cwd in
`metadata_json.$.cwd`, so memories stranded by the old, less-stable
derivation become visible again on the next session without manual
migration.
Fixes#2412
roboomp
e29555e814