## Summary
Fixes Gmail and Microsoft draft replies so workflow-created drafts stay
attached to the existing provider thread.
Fixestwentyhq/core-team-issues#2597.
## Root cause
The email composer already resolved `threadExternalId` and `references`
from `inReplyTo`, but `DraftEmailTool` only forwarded `inReplyTo` to the
outbound draft service. Gmail therefore created a raw draft without
`message.threadId`, which lets the draft appear as a standalone compose
instead of an inline thread reply.
For Microsoft, the draft path used Graph `createReply`, but parent
lookup filtered on a URL-encoded `internetMessageId`. That can miss the
parent message and fall back to creating a new draft message instead of
a reply draft.
## Changes
- Forward `threadExternalId` and `references` from `DraftEmailTool` to
outbound draft creation.
- Set Gmail draft `message.threadId` when `threadExternalId` is
available.
- Make Microsoft parent lookup use Graph request query builders with
OData string escaping, so `createReply` is reached reliably.
- Add targeted Jest coverage for the Draft Email tool, Gmail draft
threading, and Microsoft reply-draft creation.
## Validation
- `NX_DAEMON=false
/Users/thomascolasdesfrancs/.cache/codex-runtimes/codex-primary-runtime/dependencies/node/bin/node
../../node_modules/nx/dist/bin/nx.js jest twenty-server --
--runTestsByPath
src/engine/core-modules/tool/tools/email-tool/__tests__/draft-email-tool.spec.ts
src/modules/messaging/message-outbound-manager/drivers/gmail/services/__tests__/gmail-message-outbound.service.spec.ts
src/modules/messaging/message-outbound-manager/drivers/microsoft/services/__tests__/microsoft-message-outbound.service.spec.ts
--runInBand`
- `NX_DAEMON=false
/Users/thomascolasdesfrancs/.cache/codex-runtimes/codex-primary-runtime/dependencies/node/bin/node
./node_modules/nx/dist/bin/nx.js lint:diff-with-main twenty-server`
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---------
Co-authored-by: claude[bot] <41898282+claude[bot]@users.noreply.github.com>
Co-authored-by: Félix Malfait <FelixMalfait@users.noreply.github.com>
Thomas des Francs
eedd838189
