* shell: add s3.iam.*, s3.config.show, s3.user.provision; hide legacy commands
Add import/export, configuration summary, and a convenience provisioning
command:
- s3.iam.export: dump full IAM state as JSON (stdout or file)
- s3.iam.import: replace IAM state from a JSON file
- s3.config.show: human-readable summary (users, policies, service
accounts, groups with status and counts)
- s3.user.provision: one-step user+policy+credentials creation for
common readonly/readwrite/admin roles
Hide legacy commands from help listing:
- s3.configure: still works but hidden from help output
- s3.bucket.access: still works but hidden from help output
Both hidden commands remain fully functional for existing scripts.
Also adds a Hidden command tag and filters it from printGenericHelp.
* shell: address review feedback for s3.iam.*, s3.config.show, s3.user.provision
- Simplify joinMax using strings.Join
- Fix rolePolicies: remove s3:ListBucket from object-level actions
(already covered by bucket-level statement)
- Fix admin role: grant s3:* on bucket resource too
- Return flag parse errors instead of swallowing them
* shell: address missed review feedback for PR 3
- s3.iam.import: require -force flag for destructive IAM overwrite
- s3.config.show: add nil guard for resp.Configuration
- s3.user.provision: check if user exists before creating policy
- s3.user.provision: reject wildcard bucket names (* ?)
* shell: distinguish NotFound from transient errors in provision, use %w wrapping
- s3.user.provision: check gRPC status code on GetUser error — only
proceed on NotFound, abort on transient/network errors
- s3.iam.import: use %w for error wrapping to preserve error chains,
wrap PutConfiguration error with context
* shell: remove duplicate joinMax after PR 8954 merge
command_s3_helpers.go defined joinMax which is already in
command_s3_user_list.go from the merged PR 8954.
* shell: restrict export file permissions, rollback policy on user create failure
- s3.iam.export: use os.OpenFile with mode 0600 instead of os.Create
to protect exported credentials from other users
- s3.user.provision: rollback the created policy if CreateUser fails,
with a warning if the rollback itself fails
