v0.8.2: add metadata-only sidecars

README.md

@@ -21,6 +21,7 @@ For a practical step-by-step manual with recommended backup workflows, recovery
 - Deduplicated failure management with `failures list`, `failures clear`, and `retry-failed --clear-on-success`.
 - Verification, reporting, and diff commands for backup integrity.
 - Optional XMP sidecar verification with `verify --sidecar`.
+- Metadata-only XMP refresh for manifest-backed exports with `--metadata-only`.
 - Status command for quick backup summaries.
 - Opt-in rich XMP sidecar metadata with `--sidecar xmp`.
 - Optional Apple MapKit reverse geocoding for GPS assets on macOS 26+ with `--reverse-geocode`.
@@ -283,6 +284,7 @@ Common flags for `export` and `backup-all`:
 - `--max-size <n>`: filter by estimated pixel count.
 - `--format jpeg|heic|png`: preview format hint. Current bridge output is still the existing preview path; non-JPEG bridge output is future work.
 - `--sidecar none|xmp`: write opt-in XMP metadata sidecars next to exported files.
+- `--metadata-only`: with `--sidecar xmp`, refresh XMP sidecars for manifest-backed files without exporting media.
 - `--reverse-geocode`: with `--sidecar xmp`, add cached Apple MapKit address metadata for GPS assets on macOS 26+.
 - `--date-template <template>`: append date folders based on creation date, for example `YYYY/MM/DD`.
 
@@ -361,6 +363,12 @@ Verify generated sidecars with:
 photoscli verify --out ./backup --sidecar
 ```
 
+Refresh sidecars for files already present in a manifest-backed export without rewriting media files:
+
+```bash
+photoscli backup-all --out ./backup --sidecar xmp --metadata-only
+```
+
 ## Failure Tracking
 
 Failed exports are deduplicated by asset ID and stored in: