refactor: move config loading to shared directory

shared/docs/DATABASE.md

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+# Database Schema
+
+This document outlines the database schema for the Aurora project. The database is PostgreSQL, managed via Drizzle ORM.
+
+## Tables
+
+### Users (`users`)
+Stores user data, economy, and progression.
+
+| Column | Type | Description |
+|---|---|---|
+| `id` | `bigint` | Primary Key. Discord User ID. |
+| `class_id` | `bigint` | Foreign Key -> `classes.id`. |
+| `username` | `varchar(255)` | User's Discord username. |
+| `is_active` | `boolean` | Whether the user is active (default: true). |
+| `balance` | `bigint` | User's currency balance. |
+| `xp` | `bigint` | User's experience points. |
+| `level` | `integer` | User's level. |
+| `daily_streak` | `integer` | Current streak of daily command usage. |
+| `settings` | `jsonb` | User-specific settings. |
+| `created_at` | `timestamp` | Record creation time. |
+| `updated_at` | `timestamp` | Last update time. |
+
+### Classes (`classes`)
+Available character classes.
+
+| Column | Type | Description |
+|---|---|---|
+| `id` | `bigint` | Primary Key. Custom ID. |
+| `name` | `varchar(255)` | Class name (Unique). |
+| `balance` | `bigint` | Class bank balance (shared/flavor). |
+| `role_id` | `varchar(255)` | Discord Role ID associated with the class. |
+
+### Items (`items`)
+Definitions of items available in the game.
+
+| Column | Type | Description |
+|---|---|---|
+| `id` | `serial` | Primary Key. Auto-incrementing ID. |
+| `name` | `varchar(255)` | Item name (Unique). |
+| `description` | `text` | Item description. |
+| `rarity` | `varchar(20)` | Common, Rare, etc. Default: 'Common'. |
+| `type` | `varchar(50)` | MATERIAL, CONSUMABLE, EQUIPMENT, etc. |
+| `usage_data` | `jsonb` | Effect data for consumables/usables. |
+| `price` | `bigint` | Base value of the item. |
+| `icon_url` | `text` | URL for the item's icon. |
+| `image_url` | `text` | URL for the item's large image. |
+
+### Inventory (`inventory`)
+Items held by users.
+
+| Column | Type | Description |
+|---|---|---|
+| `user_id` | `bigint` | PK/FK -> `users.id`. |
+| `item_id` | `integer` | PK/FK -> `items.id`. |
+| `quantity` | `bigint` | Amount held. Must be > 0. |
+
+### Transactions (`transactions`)
+Currency transaction history.
+
+| Column | Type | Description |
+|---|---|---|
+| `id` | `bigserial` | Primary Key. |
+| `user_id` | `bigint` | FK -> `users.id`. The user affecting the balance. |
+| `related_user_id` | `bigint` | FK -> `users.id`. The other party (if any). |
+| `amount` | `bigint` | Amount transferred. |
+| `type` | `varchar(50)` | Transaction type identifier. |
+| `description` | `text` | Human-readable description. |
+| `created_at` | `timestamp` | Time of transaction. |
+
+### Item Transactions (`item_transactions`)
+Item flow history.
+
+| Column | Type | Description |
+|---|---|---|
+| `id` | `bigserial` | Primary Key. |
+| `user_id` | `bigint` | FK -> `users.id`. |
+| `related_user_id` | `bigint` | FK -> `users.id`. |
+| `item_id` | `integer` | FK -> `items.id`. |
+| `quantity` | `bigint` | Amount gained (+) or lost (-). |
+| `type` | `varchar(50)` | TRADE, SHOP_BUY, DROP, etc. |
+| `description` | `text` | Description. |
+| `created_at` | `timestamp` | Time of transaction. |
+
+### Quests (`quests`)
+Quest definitions.
+
+| Column | Type | Description |
+|---|---|---|
+| `id` | `serial` | Primary Key. |
+| `name` | `varchar(255)` | Quest title. |
+| `description` | `text` | Quest text. |
+| `trigger_event` | `varchar(50)` | Event that triggers progress checks. |
+| `requirements` | `jsonb` | Completion criteria. |
+| `rewards` | `jsonb` | Rewards for completion. |
+
+### User Quests (`user_quests`)
+User progress on quests.
+
+| Column | Type | Description |
+|---|---|---|
+| `user_id` | `bigint` | PK/FK -> `users.id`. |
+| `quest_id` | `integer` | PK/FK -> `quests.id`. |
+| `progress` | `integer` | Current progress value. |
+| `completed_at` | `timestamp` | Completion time (null if active). |
+
+### User Timers (`user_timers`)
+Generic timers for cooldowns, temporary effects, etc.
+
+| Column | Type | Description |
+|---|---|---|
+| `user_id` | `bigint` | PK/FK -> `users.id`. |
+| `type` | `varchar(50)` | PK. Timer type (COOLDOWN, EFFECT, ACCESS). |
+| `key` | `varchar(100)` | PK. specific ID (e.g. 'daily'). |
+| `expires_at` | `timestamp` | When the timer expires. |
+| `metadata` | `jsonb` | Extra data. |
+
+### Lootdrops (`lootdrops`)
+Active chat loot drop events.
+
+| Column | Type | Description |
+|---|---|---|
+| `message_id` | `varchar(255)` | Primary Key. Discord Message ID. |
+| `channel_id` | `varchar(255)` | Discord Channel ID. |
+| `reward_amount` | `integer` | Currency amount. |
+| `currency` | `varchar(50)` | Currency type constant. |
+| `claimed_by` | `bigint` | FK -> `users.id`. Null if unclaimed. |
+| `created_at` | `timestamp` | Spawn time. |
+| `expires_at` | `timestamp` | Despawn time. |
+
+### Moderation Cases (`moderation_cases`)
+History of moderation actions.
+
+| Column | Type | Description |
+|---|---|---|
+| `id` | `bigserial` | Primary Key. |
+| `case_id` | `varchar(50)` | Unique friendly ID. |
+| `type` | `varchar(20)` | warn, timeout, kick, ban, etc. |
+| `user_id` | `bigint` | Target user ID. |
+| `username` | `varchar(255)` | Target username snapshot. |
+| `moderator_id` | `bigint` | Acting moderator ID. |
+| `moderator_name` | `varchar(255)` | Moderator username snapshot. |
+| `reason` | `text` | Reason for action. |
+| `metadata` | `jsonb` | Extra data. |
+| `active` | `boolean` | Is this case active? |
+| `created_at` | `timestamp` | Creation time. |
+| `resolved_at` | `timestamp` | Resolution/Expiration time. |
+| `resolved_by` | `bigint` | User ID who resolved it. |
+| `resolved_reason` | `text` | Reason for resolution. |