add write-manifest pyproject command

[amol-]

Intent

For connect git based deployment a manifest.json is required.
Manually maintaining a manifest.json is not very convenient and it's also fairly verbose,
the support for pyproject.toml metadata makes much easier to maintain the important metadata values which then rsconnect deploy pyproject reads.

This is meant to implement support for pyproject.toml in the write-manifest command: rsconnect write-manifest pyproject, thus allowing users to keep pyproject.toml as their only source of truth and generate the manifest on demand from it (it is not required for normal deploys as rsconnect deploy pyproject can be used for those)

Type of Change

• Bug Fix
• New Feature
• Breaking Change

Approach

• refactor pyproject.toml metadata parsing from deploy pyproject so that it can be shared between deploy and write-manifest
• add a write-manifest command that reads the pyproject and creates the corresponding manifest for that app type reusing the already existing write manifest logic.

Automated Tests

• added dedicated test suite

Directions for Reviewers

Checklist

• I have updated CHANGELOG.md to cover notable changes.
• I have updated all related GitHub issues to reflect their current state.
• I have run the rsconnect-python-tests-at-night workflow in Connect against this feature branch.

[github-actions]

PR Preview Action v1.8.1
Preview removed because the pull request was closed.
2026-06-16 17:48 UTC

[github-actions]

☂️ Python Coverage

current status: ✅

Overall Coverage

Lines	Covered	Coverage	Threshold	Status
7029	5699	81%	0%	🟢

New Files

No new covered files...

Modified Files

File	Coverage	Status
rsconnect/main.py	79%	🟢
rsconnect/pyproject.py	98%	🟢
TOTAL	89%	🟢

updated for commit: c23ce93 by action🐍