database schema adjustments to server/realm/scene

db/schema/tables/010_server.sql

@@ -0,0 +1,47 @@
+-- Chattyness Server Schema Tables
+-- PostgreSQL 18 with PostGIS
+--
+-- Server-wide configuration, global resources, and settings
+
+\set ON_ERROR_STOP on
+
+BEGIN;
+
+-- =============================================================================
+-- Server Configuration (Singleton)
+-- =============================================================================
+
+CREATE TABLE server.config (
+    id UUID PRIMARY KEY DEFAULT gen_random_uuid(),
+
+    name public.nonempty_text NOT NULL,
+    description TEXT,
+    welcome_message TEXT,
+
+    default_scene_bounds public.scene_bounds NOT NULL
+        DEFAULT ST_MakeEnvelope(0, 0, 800, 600, 0),
+    max_users_per_channel INTEGER NOT NULL DEFAULT 50
+        CHECK (max_users_per_channel > 0 AND max_users_per_channel <= 1000),
+
+    message_rate_limit INTEGER NOT NULL DEFAULT 10 CHECK (message_rate_limit > 0),
+    message_rate_window_seconds INTEGER NOT NULL DEFAULT 60 CHECK (message_rate_window_seconds > 0),
+
+    allow_guest_access BOOLEAN NOT NULL DEFAULT true,
+    allow_user_uploads BOOLEAN NOT NULL DEFAULT true,
+    require_email_verification BOOLEAN NOT NULL DEFAULT false,
+
+    created_at TIMESTAMPTZ NOT NULL DEFAULT now(),
+    updated_at TIMESTAMPTZ NOT NULL DEFAULT now(),
+
+    CONSTRAINT chk_server_config_singleton CHECK (id = '00000000-0000-0000-0000-000000000001'::UUID)
+);
+
+COMMENT ON TABLE server.config IS 'Server-wide configuration settings (singleton table)';
+
+INSERT INTO server.config (id, name, description) VALUES (
+    '00000000-0000-0000-0000-000000000001'::UUID,
+    'Chattyness Server',
+    'A 2D virtual chat world'
+);
+
+COMMIT;