feat(social): add listening activity, shared rooms and modern chat

services/api/migrations/00022_chat_features.sql

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+-- +goose Up
+ALTER TABLE direct_messages ADD COLUMN reply_to uuid REFERENCES direct_messages(id) ON DELETE SET NULL,
+ ADD COLUMN edited_at timestamptz, ADD COLUMN deleted_at timestamptz;
+CREATE TABLE message_reactions (
+ message_id uuid NOT NULL REFERENCES direct_messages(id) ON DELETE CASCADE,
+ user_id uuid NOT NULL REFERENCES users(id) ON DELETE CASCADE,
+ emoji text NOT NULL CHECK(emoji IN ('❤️','👍','🔥','😂','🎵','👏')),
+ PRIMARY KEY(message_id,user_id,emoji)
+);
+CREATE TABLE chat_typing (
+ user_id uuid NOT NULL REFERENCES users(id) ON DELETE CASCADE,
+ peer_id uuid NOT NULL REFERENCES users(id) ON DELETE CASCADE,
+ expires_at timestamptz NOT NULL,
+ PRIMARY KEY(user_id,peer_id), CHECK(user_id<>peer_id)
+);
+
+-- +goose Down
+DROP TABLE chat_typing;
+DROP TABLE message_reactions;
+ALTER TABLE direct_messages DROP COLUMN reply_to, DROP COLUMN edited_at, DROP COLUMN deleted_at;