Additional object fields

[jschlyter]

Replace hostname argument with a generic list of key/value pairs for S3 object names, e.g.

--fields provider=xyzzy,site=got,hostname=xyzzy.example.com

Keep support for environment variable S3PUSHER_HOSTNAME as hostname for backwards compability.

[Copilot]

Pull request overview

This PR generalizes S3 object key generation by replacing the single hostname component with a configurable set of key/value fields, while retaining backwards compatibility via S3PUSHER_HOSTNAME.

Changes:

• Replace --hostname/hostname usage with --fields and an object_kvs dict used when building the S3 object key.
• Add parsing for S3PUSHER_FIELDS and map S3PUSHER_HOSTNAME into object_kvs["hostname"].
• Update documentation and bump tooling/dependencies in uv.lock (plus a small VS Code Ruff setting tweak).

Reviewed changes

Copilot reviewed 3 out of 4 changed files in this pull request and generated 7 comments.

File	Description
s3pusher.py	Switches object key construction to include arbitrary fields and updates CLI/env parsing.
README.md	Updates usage/docs to describe --fields and new object key format.
uv.lock	Updates locked versions for dependencies/tools (e.g., boto3/botocore/ruff).
.vscode/settings.json	Enables Ruff formatter preview setting.

Comments suppressed due to low confidence (1)

s3pusher.py:65

• boto3.client("s3") is created twice inside the same upload attempt (once before the contextvars block and again inside it). This is redundant and adds overhead; create it once and reuse the same client for the upload.

                s3_client = boto3.client("s3")
                with structlog.contextvars.bound_contextvars(s3_bucket=self.bucket, s3_object_key=s3_object_key):
                    self.logger.debug("Uploading file")
                    s3_client = boto3.client("s3")
                    t1 = time.time()

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[Copilot]

Pull request overview

Copilot reviewed 3 out of 4 changed files in this pull request and generated 6 comments.

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[Copilot]

Pull request overview

Copilot reviewed 3 out of 4 changed files in this pull request and generated 2 comments.

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