ci: automate release pipeline (draft release, PyPI trigger, e2e skip fixes)

[jacalata]

Closes #232

Summary

Automates the release pipeline so that merging to `main` is the only manual step beyond reviewing and publishing a draft.

New file: `release-on-merge.yml`

Triggers on push to `main`. Computes the next patch version from the last strict semver tag (`grep -E '^v[0-9]+.[0-9]+.[0-9]+$'`), pushes the tag (which triggers `package.yml` to build Windows/macOS/Linux binaries and attach them to the release), and creates a draft GitHub release with auto-generated notes. Fails loudly if no prior tag is found rather than silently defaulting to a potentially-colliding version.

Modified: `publish-pypi.yml`

• Removed dead `push: tags: 'pypi'` trigger — this was a literal tag name match (not a glob) that created a secret publish path bypassing the draft-release gate
• Added `release: [published]` trigger — clicking "Publish release" in the GitHub UI now automatically uploads to PyPI
• Made publish conditionals explicit using `github.event_name` (no implicit null coercion)

Modified: `run-e2-tests.yml`

• Added `workflow_call` interface (typed inputs + secrets) so the suite can be called from other workflows
• Moved credentials into `env:` vars (security: avoids shell injection; GitHub masks secrets placed in env)
• Added optional boolean inputs for `server_admin`, `site_admin`, `project_admin`, `extract_encryption_enabled` so callers can enable the relevant test groups for their account permissions

Modified: `package.yml`

• Removed `promote: true` — binaries attach to the draft release without auto-publishing it

Modified: `online_tests.py` and `setup_e2e.py`

• `site_admin = False` to match actual account permissions (was causing 4 group tests to run and hit 403 instead of skipping)
• Skip guard on `test_delete_extract` (requires extract encryption not available on test site)
• Permission flags (`server_admin`, `site_admin`, etc.) now read from env vars so they can be set via workflow inputs without editing the file
• Suppress argv printing when login credentials (PAT) are present to prevent token leak in CI logs
• `get_login_args()` returns `None` when `credentials.py` is absent; `_test_command` skips gracefully instead of crashing with `AttributeError`

Modified: `check-coverage.yml`

• Added `continue-on-error: true` to the PR comment step — `MishaKav/pytest-coverage-comment` started failing on fork PRs due to read-only `GITHUB_TOKEN` permissions; coverage is still collected, only the comment post is allowed to fail

New release checklist (after this merges)

1. Merge `development → main` PR (human approval required)
2. `release-on-merge.yml` auto-runs: pushes tag → binary builds start
3. Edit the draft release notes in GitHub UI
4. Click Publish release → PyPI upload fires automatically

Security review findings addressed

• Finding A: Removed `push: tags: 'pypi'` secret publish path
• Finding B: Strict semver regex filter prevents malformed-tag arithmetic failure
• Finding C: Explicit `github.event_name` conditionals replace implicit null coercion
• Finding D: Tracked in issue security: migrate PyPI publish to Trusted Publishing (OIDC) #417 (PyPI trusted publishing / OIDC)
• Finding E: PAT suppressed from argv print in `online_tests.py`

Test plan

• YAML lint: all changed workflow files pass
• `black` formatting clean
• e2e tests locally: 30 passed, 10 skipped, 0 failed
• `release-on-merge.yml` fired correctly on fork push to main: created draft `v2.0.1`, pushed tag, all steps green in 7s

🤖 Generated with Claude Code

[Copilot]

Pull request overview

Automates the release pipeline by creating a draft GitHub Release and tag on merges to main, publishing to PyPI on “Release published”, and improving e2e workflow reusability/skip behavior.

Changes:

• Added release-on-merge.yml to auto-tag and create a draft release on pushes to main.
• Updated PyPI publishing to trigger on GitHub Release publication (and removed the literal pypi tag trigger).
• Extended e2e workflow inputs and adjusted e2e test code to use env-configured permission flags and skip more gracefully.

Reviewed changes

Copilot reviewed 10 out of 10 changed files in this pull request and generated 1 comment.

Show a summary per file

File	Description
tests/e2e/setup_e2e.py	Makes get_login_args() return None when credentials.py is absent (but needs env fallback to keep CI e2e running).
tests/e2e/online_tests.py	Reads permission flags from env and skips gracefully when credentials are unavailable; avoids printing argv when login args include sensitive values.
.github/workflows/run-tests.yml	Bumps actions/checkout major version.
.github/workflows/run-e2-tests.yml	Adds workflow_call and typed inputs/secrets; passes creds/flags via env; bumps actions/checkout major version.
.github/workflows/release-on-merge.yml	New workflow to compute next patch tag, push it, and create a draft GitHub release with generated notes.
.github/workflows/publish-pypi.yml	Switches publishing trigger to release: published, removes push: tags: pypi, and tightens publish conditionals; bumps actions/checkout major version.
.github/workflows/package.yml	Removes promote: true, bumps actions/checkout major version, and bumps actions/upload-artifact major version.
.github/workflows/generate-metadata.yml	Bumps actions/checkout major version.
.github/workflows/codeql-analysis.yml	Bumps actions/checkout major version.
.github/workflows/check-coverage.yml	Bumps actions/checkout major version; makes coverage comment step continue-on-error.

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