potiuk opened a new pull request, #471:
URL: https://github.com/apache/airflow-steward/pull/471
## What
Make plain-text-only an enforced, documented invariant for Gmail drafts
created by either backend (`oauth_curl` and the claude.ai Gmail MCP).
## Why
The project's outbound correspondence (security replies, ASF-security
relays, advisory text) is plain text by policy. Nothing previously *guaranteed*
that — the oauth backend happened to emit plain text but had no guard against a
regression, and the MCP path will emit an HTML part if `htmlBody` is ever
passed.
## Changes
- **`oauth_curl`**
(`tools/gmail/oauth-draft/src/oauth_draft/create_draft.py`): comment on
`build_mime` locking the intent — `set_content(str)` yields a single
`text/plain` part; never add an HTML alternative.
- **Test** (`tests/test_create_draft.py`): new
`test_build_mime_is_plain_text_not_html` asserting the built MIME is
single-part `text/plain`, not multipart, with no `text/html` anywhere and no
`text/html` in the raw bytes.
- **`claude_ai_mcp`**: documented the hard rule — pass only `body`, never
`htmlBody` (which adds a `text/html` part) — in `operations.md` (call-shape
example + bullet + "Hard rules that apply to both backends") and
`draft-backends.md` ("Limitations that apply to both backends").
Docs + one Python package. `prek`-equivalent hooks ran on commit and pass:
ruff, mypy, pytest (60 tests), markdownlint, typos, check-placeholders.
🤖 Generated with [Claude Code](https://claude.com/claude-code)
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