Addresses Copilot review feedback: the changelog steps depend on
open-telemetry#16 (towncrier setup) which hasn't merged yet. Make the dependency
explicit at the top of the doc so it's obvious to any reviewer.

Assisted-by: Claude Opus 4.7 (1M context)

The note belongs in the PR description as a merge-ordering signal,
not in the doc itself where it would have to be removed once open-telemetry#16
lands.

Assisted-by: Claude Opus 4.7 (1M context)

…elemetry#20)

* docs: add RELEASING.md

Documents the per-package independent release model used by this repo,
the manual end-to-end release steps with the existing build scripts,
and the towncrier-based changelog flow.

Calls out missing pieces explicitly: PyPI names are still TBD per
package, and contrib's automated release workflows haven't been ported
yet. Both tracked in the bootstrap issue.

Assisted-by: Claude Opus 4.7 (1M context)

* add note about towncrier dependency

Addresses Copilot review feedback: the changelog steps depend on
open-telemetry#16 (towncrier setup) which hasn't merged yet. Make the dependency
explicit at the top of the doc so it's obvious to any reviewer.

Assisted-by: Claude Opus 4.7 (1M context)

* revert inline towncrier note

The note belongs in the PR description as a merge-ordering signal,
not in the doc itself where it would have to be removed once open-telemetry#16
lands.

Assisted-by: Claude Opus 4.7 (1M context)

* port package release workflows from contrib

Replaces the manual-release documentation that was originally on this
branch with the contrib release workflows for independently released
packages. Every publishable package in this repo is independent, so
only the per-package workflows apply (no coordinated bulk-release
flow).

Workflows ported:
- [Package] Prepare release: cuts the release branch
  package-release/<pkg>/v<X>.<Y>.x; opens PRs to bump version and
  build the changelog via towncrier on both the release branch and
  main.
- [Package] Prepare patch release: opens a patch-bump PR against an
  existing package release branch.
- [Package] Release: publishes the built wheel to PyPI, creates the
  GitHub release, opens a back-merge PR copying the changelog to main.

Supporting scripts ported:
- scripts/generate_release_notes.sh
- scripts/merge_changelog_to_main.sh
- .github/scripts/use-cla-approved-github-bot.sh

Adaptations from contrib:
- Workflow package dropdowns list the 8 publishable packages in this
  repo.
- backport.yml not ported; no release branches exist yet, will revisit
  when one does.
- PyPI publishing uses a token (secrets.pypi_password), matching
  contrib. Tracked in open-telemetry#15 to migrate to PyPI trusted publishing once
  package names are decided and per-package publishers can be set up.

RELEASING.md rewritten as a thin doc pointing at the workflows,
listing the otelbot / PyPI / branch protection prerequisites, and
documenting the pre-existing static "## Unreleased" entries that need
manual folding on the first towncrier release per package.

Assisted-by: Claude Opus 4.7 (1M context)

* drop --discussion-category from gh release create

Discussions are not enabled on the opentelemetry-python-genai repo,
and there is no `announcements` category, so the flag would cause
`gh release create` to fail. Drop it for now; can be re-added in a
follow-up if/when Discussions is enabled and an announcements
category is created.

Picked up from JWinermaSplunk's review on PR open-telemetry#20.

Assisted-by: Claude Opus 4.7 (1M context)

* restore setup-uv step to package release workflow

build_a_package.sh uses `uv run` and `uv build`, so the runner needs uv
installed. Removed by mistake earlier.

Assisted-by: Claude Opus 4.7 (1M context)

* add bulk release workflows with tag-from-main and PyPI trusted publishing

Replace contrib's always-on release branches with prep and publish on main,
lazy backport branches, release-all orchestration, and OIDC publishing via
the pypi GitHub environment.

* Simplify release docs and release package list.

Rename eachdist.ini exclude_release to release_packages, omit scaffolding
packages from release workflows, and focus RELEASING.md on release steps.

* style: apply ruff format to scripts/eachdist.py

Fix pre-commit ruff-format CI failure on PR open-telemetry#20.

---------

Co-authored-by: DylanRussell <[email protected]>