Unify sender workers into one package

[Kuchizu]

Merges email, telegram, slack, webhook and loop sender workers into workers/sender.
One process serves all channels, each channel still consumes its own sender/ queue, MongoDB connections are shared.

Goal: optimize k8s resource usage

[Copilot]

🟡 Changes recommended

There are confirmed runtime/templating bugs (undefined variables, wrong Twig include vars, broken prettyTime pluralization) and a TS visibility issue (channelWorkers private but referenced) that should be fixed before merge.

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Pull request overview

This PR consolidates multiple per-channel “sender” workers (email/telegram/slack/webhook/loop) into a single workers/sender package that starts one queue consumer per enabled channel while sharing MongoDB connections, aiming to reduce k8s resource usage.

Changes:

• Replace standalone channel sender workers with one multi-channel sender process (SenderWorker + ChannelSenderWorker).
• Move channel providers/templates under workers/sender/src/providers/<channel>/ and update tests accordingly.
• Update local/dev/prod run/test wiring (root package.json, compose files, worker name registry).

File summaries

File	Description
workers/webhook/src/index.ts	Removes standalone webhook sender worker entrypoint
workers/webhook/package.json	Removes standalone webhook worker package metadata
workers/telegram/src/index.ts	Removes standalone telegram sender worker entrypoint
workers/telegram/README.md	Removes standalone telegram worker docs
workers/telegram/package.json	Removes standalone telegram worker package metadata
workers/slack/yarn.lock	Removes slack worker lockfile (worker removed)
workers/slack/src/index.ts	Removes standalone slack sender worker entrypoint
workers/slack/package.json	Removes standalone slack worker package metadata
workers/sender/tests/worker.test.ts	Updates worker tests for multi-channel sender
workers/sender/tests/webhook/provider.test.ts	Repoints webhook provider tests to new paths
workers/sender/tests/webhook/mocks/several-events-notify.ts	Adds webhook mock payload fixture
workers/sender/tests/webhook/mocks/event-notify.ts	Adds webhook mock payload fixture
workers/sender/tests/webhook/mocks/assignee-notify.ts	Adds webhook mock payload fixture
workers/sender/tests/telegram/provider.test.ts	Repoints telegram provider tests to new paths
workers/sender/tests/slack/utils.test.ts	Repoints slack utils test to new paths
workers/sender/tests/slack/provider.test.ts	Repoints slack provider tests to new paths
workers/sender/tests/slack/mocks/several-events-notify.ts	Adds slack mock payload fixture
workers/sender/tests/slack/mocks/event-notify.ts	Adds slack mock payload fixture
workers/sender/tests/sender-example.ts	Removes example sender worker class (replaced)
workers/sender/tests/loop/provider.test.ts	Repoints loop provider tests to new paths
workers/sender/tests/loop/mocks/several-events-notify.ts	Adds loop mock payload fixture
workers/sender/tests/loop/mocks/event-notify.ts	Adds loop mock payload fixture
workers/sender/tests/email/provider.test.ts	Repoints email provider tests to new paths
workers/sender/src/providers/webhook/types/template.d.ts	Adds webhook delivery shape type
workers/sender/src/providers/webhook/templates/index.ts	Exports webhook template helpers
workers/sender/src/providers/webhook/templates/generic.ts	Implements generic webhook serializer
workers/sender/src/providers/webhook/provider.ts	Adds webhook provider in unified sender
workers/sender/src/providers/webhook/deliverer.ts	Moves webhook HTTP deliverer under sender
workers/sender/src/providers/telegram/types/template.d.ts	Adds telegram template interface type
workers/sender/src/providers/telegram/templates/several-events.ts	Adds telegram several-events template
workers/sender/src/providers/telegram/templates/index.ts	Exports telegram templates registry
workers/sender/src/providers/telegram/templates/event.ts	Adds telegram event template
workers/sender/src/providers/telegram/provider.ts	Updates telegram provider template typing import
workers/sender/src/providers/slack/types/template.d.ts	Adds slack template interface type
workers/sender/src/providers/slack/templates/utils.ts	Adds slack template helper utilities
workers/sender/src/providers/slack/templates/several-events.ts	Adds slack several-events template
workers/sender/src/providers/slack/templates/index.ts	Exports slack templates registry
workers/sender/src/providers/slack/templates/event.ts	Adds slack event template
workers/sender/src/providers/slack/provider.ts	Updates slack provider template typing import
workers/sender/src/providers/slack/deliverer.ts	Adds slack deliverer abstraction for testing
workers/sender/src/providers/loop/types/template.d.ts	Adds loop template interface type
workers/sender/src/providers/loop/templates/several-events.ts	Fixes loop template util import path
workers/sender/src/providers/loop/templates/index.ts	Exports loop templates registry
workers/sender/src/providers/loop/templates/event.ts	Repoints toMaxLen helper to unified slack utils
workers/sender/src/providers/loop/provider.ts	Updates loop provider template typing import
workers/sender/src/providers/loop/deliverer.ts	Adds loop deliverer abstraction
workers/sender/src/providers/email/templates/names.ts	Adds generated email template names enum
workers/sender/src/providers/email/templates/index.ts	Updates template path docs to new location
workers/sender/src/providers/email/templates/extensions.ts	Adds twig extensions/filters for email templates
workers/sender/src/providers/email/templates/emails/workspace-invite/text.twig	Adds workspace-invite email (text)
workers/sender/src/providers/email/templates/emails/workspace-invite/subject.twig	Adds workspace-invite email (subject)
workers/sender/src/providers/email/templates/emails/workspace-invite/html.twig	Adds workspace-invite email (html)
workers/sender/src/providers/email/templates/emails/sign-up/text.twig	Adds sign-up email (text)
workers/sender/src/providers/email/templates/emails/sign-up/subject.twig	Adds sign-up email (subject)
workers/sender/src/providers/email/templates/emails/sign-up/html.twig	Adds sign-up email (html)
workers/sender/src/providers/email/templates/emails/several-events/text.twig	Adds several-events email (text)
workers/sender/src/providers/email/templates/emails/several-events/subject.twig	Adds several-events email (subject)
workers/sender/src/providers/email/templates/emails/several-events/html.twig	Adds several-events email (html)
workers/sender/src/providers/email/templates/emails/payment-success/text.twig	Adds payment-success email (text)
workers/sender/src/providers/email/templates/emails/payment-success/subject.twig	Adds payment-success email (subject)
workers/sender/src/providers/email/templates/emails/payment-success/html.twig	Adds payment-success email (html)
workers/sender/src/providers/email/templates/emails/payment-failed/text.twig	Adds payment-failed email (text)
workers/sender/src/providers/email/templates/emails/payment-failed/subject.twig	Adds payment-failed email (subject)
workers/sender/src/providers/email/templates/emails/payment-failed/html.twig	Adds payment-failed email (html)
workers/sender/src/providers/email/templates/emails/password-reset/text.twig	Adds password-reset email (text)
workers/sender/src/providers/email/templates/emails/password-reset/subject.twig	Adds password-reset email (subject)
workers/sender/src/providers/email/templates/emails/password-reset/html.twig	Adds password-reset email (html)
workers/sender/src/providers/email/templates/emails/events-limit-almost-reached/text.twig	Adds events-limit email (text)
workers/sender/src/providers/email/templates/emails/events-limit-almost-reached/subject.twig	Adds events-limit email (subject)
workers/sender/src/providers/email/templates/emails/events-limit-almost-reached/html.twig	Adds events-limit email (html)
workers/sender/src/providers/email/templates/emails/event/text.twig	Adds event email (text)
workers/sender/src/providers/email/templates/emails/event/subject.twig	Adds event email (subject)
workers/sender/src/providers/email/templates/emails/event/html.twig	Adds event email (html)
workers/sender/src/providers/email/templates/emails/days-limit-almost-reached/text.twig	Adds days-limit email (text)
workers/sender/src/providers/email/templates/emails/days-limit-almost-reached/subject.twig	Adds days-limit email (subject)
workers/sender/src/providers/email/templates/emails/days-limit-almost-reached/html.twig	Adds days-limit email (html)
workers/sender/src/providers/email/templates/emails/blocked-workspace-reminder/text.twig	Adds blocked reminder email (text)
workers/sender/src/providers/email/templates/emails/blocked-workspace-reminder/subject.twig	Adds blocked reminder email (subject)
workers/sender/src/providers/email/templates/emails/blocked-workspace-reminder/html.twig	Adds blocked reminder email (html)
workers/sender/src/providers/email/templates/emails/block-workspace/text.twig	Adds block-workspace email (text)
workers/sender/src/providers/email/templates/emails/block-workspace/subject.twig	Adds block-workspace email (subject)
workers/sender/src/providers/email/templates/emails/block-workspace/html.twig	Adds block-workspace email (html)
workers/sender/src/providers/email/templates/emails/assignee/text.twig	Adds assignee email (text)
workers/sender/src/providers/email/templates/emails/assignee/subject.twig	Adds assignee email (subject)
workers/sender/src/providers/email/templates/emails/assignee/html.twig	Adds assignee email (html)
workers/sender/src/providers/email/templates/components/workspace.twig	Adds reusable workspace header component
workers/sender/src/providers/email/templates/components/project.twig	Adds reusable project header component
workers/sender/src/providers/email/templates/components/layout.twig	Adds shared email layout wrapper
workers/sender/src/providers/email/templates/components/filename.twig	Adds filename display component
workers/sender/src/providers/email/templates/components/event.twig	Adds reusable event component
workers/sender/src/providers/email/templates/components/event-info.twig	Adds reusable event meta component
workers/sender/src/providers/email/templates/components/button.twig	Adds reusable CTA button component
workers/sender/src/providers/email/templates/components/backtrace.twig	Adds reusable backtrace component
workers/sender/src/providers/email/provider.ts	Updates email provider util import path
workers/sender/src/index.ts	Implements multi-channel sender orchestrator
workers/sender/src/channels.ts	Adds channel→provider registry
workers/sender/src/channel-sender.ts	Adds per-channel queue consumer worker
workers/sender/scripts/generateTemplatesNames.ts	Updates generator paths for moved templates
workers/sender/scripts/emailOverviewForm.twig	Updates email overview links to sender
workers/sender/scripts/emailOverview.ts	Repoints email overview script to new template module
workers/sender/README.md	Updates docs for unified sender structure/config
workers/sender/package.json	Adds dependencies/scripts merged from channel workers
workers/sender/.env.sample	Documents SENDER_CHANNELS + SMTP vars
workers/loop/yarn.lock	Removes loop worker lockfile (worker removed)
workers/loop/src/index.ts	Removes standalone loop sender worker entrypoint
workers/loop/package.json	Removes standalone loop worker package metadata
workers/email/yarn.lock	Removes email worker lockfile (worker removed)
workers/email/src/index.ts	Removes standalone email sender worker entrypoint
workers/email/src/env.ts	Removes email worker env loader
workers/email/README.md	Removes email worker docs (moved to sender)
workers/email/package.json	Removes standalone email worker package metadata
workers/email/.gitignore	Removes email worker .env ignore (worker removed)
workers/email/.env.sample	Removes email worker env sample (moved to sender)
README.md	Updates compose example to hawk-worker-sender
package.json	Consolidates run/test scripts under sender
lib/workerNames.js	Adds explicit per-channel sender queue names
docker-compose.prod.yml	Replaces email/telegram services with sender
docker-compose.dev.yml	Replaces multiple sender services with sender

Review details

• Files reviewed: 46/118 changed files
• Comments generated: 1
• Review effort level: Lite

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