feat: HA scheduler leadership + templated email log

HA scheduler: the job scheduler and alert evaluator hold session-scoped
PostgreSQL advisory locks on pinned pool connections — replicas scan for
due work exactly once, failover verified live with two replicas. Manual
and hook-triggered runs stay available on any replica.

Email surface: mailer renders registered templates (invitation); every
send is logged to core.email_log with status and error text. New
GET /projects/:id/emails endpoint; Members page shows an Email log card.

Generated with [Devin](https://devin.ai)

Co-Authored-By: Devin <158243242+devin-ai-integration[bot]@users.noreply.github.com>

packages/api-client/src/generated/index.ts

@@ -67,6 +67,8 @@ export type { DeployMarker } from './models/DeployMarker';
 export type { Document } from './models/Document';
 export type { DocumentID } from './models/DocumentID';
 export type { DocumentListResponse } from './models/DocumentListResponse';
+export { EmailLogEntry } from './models/EmailLogEntry';
+export type { EmailLogListResponse } from './models/EmailLogListResponse';
 export type { ErrorEnvelope } from './models/ErrorEnvelope';
 export type { EventSeriesBucket } from './models/EventSeriesBucket';
 export type { HealthStatus } from './models/HealthStatus';
@@ -207,6 +209,8 @@ export { $DeployMarker } from './schemas/$DeployMarker';
 export { $Document } from './schemas/$Document';
 export { $DocumentID } from './schemas/$DocumentID';
 export { $DocumentListResponse } from './schemas/$DocumentListResponse';
+export { $EmailLogEntry } from './schemas/$EmailLogEntry';
+export { $EmailLogListResponse } from './schemas/$EmailLogListResponse';
 export { $ErrorEnvelope } from './schemas/$ErrorEnvelope';
 export { $EventSeriesBucket } from './schemas/$EventSeriesBucket';
 export { $HealthStatus } from './schemas/$HealthStatus';
@@ -291,6 +295,7 @@ export { AlertsService } from './services/AlertsService';
 export { AutomationService } from './services/AutomationService';
 export { CollectionsService } from './services/CollectionsService';
 export { DatabasesService } from './services/DatabasesService';
+export { EmailService } from './services/EmailService';
 export { HealthService } from './services/HealthService';
 export { InboundService } from './services/InboundService';
 export { InstanceService } from './services/InstanceService';

packages/api-client/src/generated/models/EmailLogEntry.ts

@@ -0,0 +1,20 @@
+/* generated using openapi-typescript-codegen -- do not edit */
+/* istanbul ignore file */
+/* tslint:disable */
+/* eslint-disable */
+export type EmailLogEntry = {
+    id: string;
+    template: string;
+    to_email: string;
+    subject: string;
+    status: EmailLogEntry.status;
+    error?: string;
+    created_at: string;
+};
+export namespace EmailLogEntry {
+    export enum status {
+        SENT = 'sent',
+        FAILED = 'failed',
+    }
+}
+

packages/api-client/src/generated/models/EmailLogListResponse.ts

@@ -0,0 +1,9 @@
+/* generated using openapi-typescript-codegen -- do not edit */
+/* istanbul ignore file */
+/* tslint:disable */
+/* eslint-disable */
+import type { EmailLogEntry } from './EmailLogEntry';
+export type EmailLogListResponse = {
+    items: Array<EmailLogEntry>;
+};
+

packages/api-client/src/generated/schemas/$EmailLogEntry.ts

@@ -0,0 +1,37 @@
+/* generated using openapi-typescript-codegen -- do not edit */
+/* istanbul ignore file */
+/* tslint:disable */
+/* eslint-disable */
+export const $EmailLogEntry = {
+    properties: {
+        id: {
+            type: 'string',
+            isRequired: true,
+            format: 'uuid',
+        },
+        template: {
+            type: 'string',
+            isRequired: true,
+        },
+        to_email: {
+            type: 'string',
+            isRequired: true,
+        },
+        subject: {
+            type: 'string',
+            isRequired: true,
+        },
+        status: {
+            type: 'Enum',
+            isRequired: true,
+        },
+        error: {
+            type: 'string',
+        },
+        created_at: {
+            type: 'string',
+            isRequired: true,
+            format: 'date-time',
+        },
+    },
+} as const;

packages/api-client/src/generated/schemas/$EmailLogListResponse.ts

@@ -0,0 +1,15 @@
+/* generated using openapi-typescript-codegen -- do not edit */
+/* istanbul ignore file */
+/* tslint:disable */
+/* eslint-disable */
+export const $EmailLogListResponse = {
+    properties: {
+        items: {
+            type: 'array',
+            contains: {
+                type: 'EmailLogEntry',
+            },
+            isRequired: true,
+        },
+    },
+} as const;

packages/api-client/src/generated/services/EmailService.ts

@@ -0,0 +1,36 @@
+/* generated using openapi-typescript-codegen -- do not edit */
+/* istanbul ignore file */
+/* tslint:disable */
+/* eslint-disable */
+import type { EmailLogListResponse } from '../models/EmailLogListResponse';
+import type { CancelablePromise } from '../core/CancelablePromise';
+import { OpenAPI } from '../core/OpenAPI';
+import { request as __request } from '../core/request';
+export class EmailService {
+    /**
+     * Recent transactional emails sent for this project (invitations etc.) — every send is logged with its outcome.
+     * @returns EmailLogListResponse Email log entries
+     * @throws ApiError
+     */
+    public static listEmailLog({
+        projectId,
+        limit = 50,
+    }: {
+        projectId: string,
+        limit?: number,
+    }): CancelablePromise<EmailLogListResponse> {
+        return __request(OpenAPI, {
+            method: 'GET',
+            url: '/projects/{projectID}/emails',
+            path: {
+                'projectID': projectId,
+            },
+            query: {
+                'limit': limit,
+            },
+            errors: {
+                401: `Error response`,
+            },
+        });
+    }
+}