feat: notification jobs and emails for workflows

[gusfcarvalho]

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[Copilot]

Pull request overview

This pull request implements a comprehensive notification system for workflows, adding email notifications for task assignments, due-soon reminders, daily digests, and execution failures. The changes integrate a new notification enqueuer pattern into the workflow execution engine and introduce several new River worker types to handle asynchronous email delivery.

Changes:

• Adds four new notification worker types (task-assigned, due-soon, task-digest, execution-failed) with corresponding email templates
• Introduces NotificationEnqueuer interface for decoupling notification jobs from the workflow engine
• Updates workflow configuration to support scheduling notification jobs
• Implements user repository for notification recipient lookup
• Adds CreatedByID/UpdatedByID tracking to workflow instances

Reviewed changes

Copilot reviewed 35 out of 35 changed files in this pull request and generated 9 comments.

Show a summary per file

File	Description
workflow.yaml	Adds configuration flags for enabling due-soon and task-digest notifications with cron schedules
internal/config/workflow.go	Defines new configuration fields for notification features with defaults
internal/config/workflow_test.go	Tests for new notification configuration fields
internal/workflow/executor.go	Integrates NotificationEnqueuer interface and enqueues task-assigned notifications during workflow initialization and step unblocking
internal/workflow/overdue.go	Adds notification enqueuing when workflow executions fail during overdue checks
internal/workflow/manager.go	Enqueues failure notifications when workflow execution job enqueuing fails
internal/workflow/assignment.go	Enqueues task-assigned notifications after step reassignment, adds logger parameter to constructor
internal/workflow/assignment_test.go	Updates tests to pass logger to NewAssignmentService
internal/workflow/executor_integration_test.go	Updates tests to pass logger to NewAssignmentService
internal/service/worker/service.go	Implements notification enqueuer methods, wires up new workers, adds periodic job configuration
internal/service/worker/jobs.go	Defines job args for notification types, adds notification worker implementations
internal/service/worker/user_repository.go	Implements user lookup for notification recipients
internal/service/worker/due_soon_checker.go	Periodic worker that finds tasks due soon and enqueues reminder emails
internal/service/worker/workflow_task_digest_checker.go	Periodic worker that enqueues digest jobs for subscribed users
internal/service/worker/workflow_task_digest_worker.go	Sends per-user digest of pending/overdue tasks
internal/service/worker/workflow_execution_failed_worker.go	Sends failure notification to workflow instance creator
internal/service/worker/*_test.go	Comprehensive test coverage for new workers
internal/service/email/templates/templates/*.html	HTML email templates for notifications
internal/service/email/templates/templates/*.txt	Plain text email templates for notifications
internal/service/email/templates/service_test.go	Tests for new email templates
internal/api/handler/workflows/workflow_instance.go	Captures CreatedByID and UpdatedByID from actor claims
internal/api/handler/workflows/*_integration_test.go	Updates tests to pass logger to NewAssignmentService
internal/api/handler/api.go	Updates handler initialization to pass logger to NewAssignmentService
Makefile	Changes "reviewable" target from swagger generation to linting and integration tests

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Pull request overview

Copilot reviewed 68 out of 68 changed files in this pull request and generated 6 comments.

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Pull request overview

Copilot reviewed 74 out of 74 changed files in this pull request and generated no new comments.

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Pull request overview

Copilot reviewed 74 out of 74 changed files in this pull request and generated 3 comments.

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[Copilot]

Pull request overview

Copilot reviewed 74 out of 74 changed files in this pull request and generated 3 comments.

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[Copilot]

Pull request overview

Copilot reviewed 74 out of 74 changed files in this pull request and generated no new comments.

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