* shell: expand `~` in local file path arguments
The weed shell parses commands itself instead of going through an OS
shell, so a path like `~/Downloads/foo.meta` was passed verbatim to
`os.Open`, which fails because no `~` directory exists. Users had to
spell out absolute home paths in every command.
Add an `expandHomeDir` helper that resolves a leading `~` or `~/...` to
the user's home directory, and run user-supplied local file paths in
the affected shell commands through it:
fs.meta.load (positional file)
fs.meta.save (-o)
fs.meta.changeVolumeId (-mapping)
s3.iam.export (-file)
s3.iam.import (-file)
s3.policy (-file)
s3tables.bucket (-file)
s3tables.table (-file, -metadata)
volume.fsck (-tempPath)
Filer-namespace path flags (`-dir`, `-path`, `-locationPrefix`, etc.)
are unaffected; they live in the filer, not on the local FS.
* shell: reuse util.ResolvePath instead of a new helper
util.ResolvePath already does tilde expansion; drop the local
expandHomeDir helper and route every shell call site through it.
Refactored doTraverseBfsAndSaving to use context cancellation.
If the saving process fails, the traversal is stopped immediately
to prevent workers from blocking on the output channel.
* Add TraverseBfsWithContext and fix race conditions in error handling
- Add TraverseBfsWithContext function to support context cancellation
- Fix race condition in doTraverseBfsAndSaving using atomic.Bool and sync.Once
- Improve error handling with fail-fast behavior and proper error propagation
- Update command_volume_fsck to use error-returning saveFn callback
- Enhance error messages in readFilerFileIdFile with detailed context
* refactoring
* fix error format
* atomic
* filer_pb: make enqueue return void
* shell: simplify fs.meta.save error handling
* filer_pb: handle enqueue return value
* Revert "atomic"
This reverts commit 712648bc35.
* shell: refine fs.meta.save logic
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Co-authored-by: Chris Lu <chris.lu@gmail.com>
