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Port of #1731 (diazMelgarejo) onto current master. gbrain import wrote ~/.gbrain/import-checkpoint.json with the caller's raw dir argument, so a checkpoint left behind by an interrupted run (e.g. SIGTERM) could carry "." or a symlinked spelling — an identity that resolves to whatever CWD the next consumer happens to run from. Downstream tooling that treated the checkpoint dir as an owned staging boundary could then act on the wrong directory. - runImport captures the import target ONCE via resolveImportTargetDir (resolve + realpathSync) and threads that canonical value through collection, checkpoint load/save, and resume filtering - checkpoints are self-describing (schema_version: 1, owner: "gbrain", kind: "import"); loadCheckpoint tolerates absent metadata (legacy path-based files) but rejects present-and-wrong metadata and any relative dir - checkpoint contract documented in docs/guides/live-sync.md (llms bundle regenerated) - test/import-resume.test.ts fixture now realpaths its tmpdir so planted checkpoints match the canonicalized dir (macOS /var -> /private/var) Fixes #1728 Co-authored-by: Lawrence Melgarejo <Lawrence@cyre.me> Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>