feat: mount lazyly

README.md

@@ -131,18 +131,18 @@ By default the command starts the mount process in the background. To run it in
 DOCSPELL_CLI_MOUNT_FOREGROUND=1 docspell-cli mount ~/mnt/docspell
 ```
 
-Mounted files are grouped by Docspell folder and date:
+Mounted files are organized by item date:
 
 ```text
-<Docspell folder>/<year>/<month>/<item name>.<attachment extension>
+<year>/<month>/<item name>.<attachment extension>
 ```
 
-Items without a folder are placed below `No Folder`; items without a date are placed below `No Date`. Multiple attachments are named with a numeric suffix. File contents are downloaded lazily from Docspell when read.
+The mount creates year and month directories without querying Docspell. Opening a month queries Docspell for that date, so documents added after mounting appear without a remount. Items without a date are placed below `No Date`. Multiple attachments and conflicting item names are given numeric suffixes. File contents are downloaded lazily from Docspell when read.
 
 The mount also includes:
 
-- `by-id/<id-prefix>/<item-id>.<extension>` entries for stable ID-based lookups.
-- `.docspell-cli-metadata.json`, used by helper commands to map item IDs to friendly mounted paths.
+- `by-id/<id-prefix>/<item-id>.<extension>` entries for stable ID-based lookups. Every two-character Docspell ID prefix is shown; opening one queries only IDs with that prefix.
+- `.docspell-cli-metadata.json`, which is empty for the lazy mount.
 
 Mount options: