feat: Kick.com platform support

[Satont]

Summary

Transform Twir from a Twitch-only bot into a platform-agnostic streaming bot by adding Kick.com as a second supported platform.

Deliverables

• user_platform_accounts table + users.id → internal UUID migration
• Kick OAuth 2.1 + PKCE auth flow
• Kick EventSub HTTP webhooks with HMAC-SHA256 verification
• Generic ChatMessage bus type (parallel queue strategy)
• platforms column on commands/timers/keywords with platform filtering
• $(platform) built-in parser variable
• KickProfile + linkedAccounts in GraphQL schema
• GetProfileByKickId for 7TV integration
• kick_bots table for single Kick bot account
• Frontend: Kick login button, linked accounts UI, platform selectors

Architecture

• Platform as enum everywhere — typed Platform enum in Go, Postgres ENUM type, GraphQL enum, TS generated enum
• No GORM in new code — all new Go code uses pgx via libs/repositories
• Parallel NATS queue strategy — old TwitchChatMessage queue preserved until all consumers migrated

Progress

• Wave 0: Platform enum foundation (Go + DB + GraphQL)
• Wave 1: DB migrations (users UUID, kick_bots, platforms[], channels multi-platform)
• Wave 2: Core interfaces + entities
• Wave 3: Auth refactor + Kick OAuth
• Wave 4: EventSub / Kick webhooks
• Wave 5: Generic bus + Kick event handlers
• Wave 6: Parser platform awareness
• Wave 7: GraphQL + 7TV
• Wave 8: Frontend
• Wave 9: Kick bot message sending\

Todo:

• - cover generic bus event with platform enum
• - remove inline svg inside web
• - fix 2026/04/13 04:38:31 /home/satont/Projects/twir/worktrees/feat/kick-platform/apps/api-gql/internal/auth/sessions_user.go:65 ERROR: invalid input syntax for type uuid: "12345" (SQLSTATE 22P02) [0.880ms] [rows:0] SELECT * FROM "users" WHERE "users"."id" = $1$ ORDER BY "users"."id" LIMIT $2$
• - fix 2026/04/13 04:39:50 /home/satont/Projects/twir/worktrees/feat/kick-platform/apps/scheduler/internal/timers/expired_commands.go:88 ERROR: cached plan must not change result type (SQLSTATE 0A000) [0.863ms] [rows:0] SELECT * FROM "channels_commands" WHERE "expires_at" < $1$
• - find other sql problem places
• - mind way to easy retrieve platform user id, broadcaster ids, maybe via entities and methods.
• - store user messages in clickhouse.

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