feat(messaging): sync draft emails and edit them in the thread composer (#22178)

Stop excluding drafts from sync across all three providers (Gmail DRAFT
label, Microsoft/IMAP Drafts folder) and add an isDraft boolean field on
Message so drafts are queryable by the API and AI agents.

Drafts render in the thread with a Draft tag; clicking one opens the
existing reply composer pre-filled with the draft's recipients, subject
and body, and Send reuses the existing send-email flow.

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---------

Co-authored-by: Félix Malfait <felix.malfait@gmail.com>

packages/twenty-client-sdk/src/metadata/generated/schema.graphql

@@ -2789,6 +2789,7 @@ type DuplicatedDashboard {
 type SendEmailOutput {
   success: Boolean!
   error: String
+  messageThreadId: String
 }
 
 type Analytics {
@@ -4609,6 +4610,7 @@ input SendEmailInput {
   subject: String!
   body: String!
   inReplyTo: String
+  draftMessageId: String
   files: [SendEmailAttachmentInput!]
 }
 

packages/twenty-client-sdk/src/metadata/generated/schema.ts

@@ -2453,6 +2453,7 @@ export interface DuplicatedDashboard {
 export interface SendEmailOutput {
     success: Scalars['Boolean']
     error?: Scalars['String']
+    messageThreadId?: Scalars['String']
     __typename: 'SendEmailOutput'
 }
 
@@ -5611,6 +5612,7 @@ export interface DuplicatedDashboardGenqlSelection{
 export interface SendEmailOutputGenqlSelection{
     success?: boolean | number
     error?: boolean | number
+    messageThreadId?: boolean | number
     __typename?: boolean | number
     __scalar?: boolean | number
 }
@@ -6590,7 +6592,7 @@ export interface EditSsoInput {id: Scalars['UUID'],status: SSOIdentityProviderSt
 
 export interface CreateCalendarEventInput {connectedAccountId: Scalars['String'],title: Scalars['String'],description?: (Scalars['String'] | null),location?: (Scalars['String'] | null),startsAt: Scalars['String'],endsAt: Scalars['String'],isFullDay?: (Scalars['Boolean'] | null),timeZone?: (Scalars['String'] | null),attendees?: (Scalars['String'] | null),sendInvitations?: (Scalars['Boolean'] | null),addConferencing?: (Scalars['Boolean'] | null)}
 
-export interface SendEmailInput {connectedAccountId: Scalars['String'],to: Scalars['String'],cc?: (Scalars['String'] | null),bcc?: (Scalars['String'] | null),subject: Scalars['String'],body: Scalars['String'],inReplyTo?: (Scalars['String'] | null),files?: (SendEmailAttachmentInput[] | null)}
+export interface SendEmailInput {connectedAccountId: Scalars['String'],to: Scalars['String'],cc?: (Scalars['String'] | null),bcc?: (Scalars['String'] | null),subject: Scalars['String'],body: Scalars['String'],inReplyTo?: (Scalars['String'] | null),draftMessageId?: (Scalars['String'] | null),files?: (SendEmailAttachmentInput[] | null)}
 
 export interface SendEmailAttachmentInput {id: Scalars['String'],name: Scalars['String']}
 

packages/twenty-client-sdk/src/metadata/generated/types.ts

@@ -5549,6 +5549,9 @@ export default {
             "error": [
                 1
             ],
+            "messageThreadId": [
+                1
+            ],
             "__typename": [
                 1
             ]
@@ -11702,6 +11705,9 @@ export default {
             "inReplyTo": [
                 1
             ],
+            "draftMessageId": [
+                1
+            ],
             "files": [
                 491
             ],