Complete documentation for all 44 database handlers with centralized performance considerations

src/engine/documentation/Handler Specific Documentation/dbKitHandler_Documentation.md

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+# dbKitHandler Documentation
+
+## Overview
+This document describes the database relationships and interactions for the `dbKitHandler` class. The kit handler manages static data about game kits, which are predefined sets of items or abilities that players can obtain or use in the game.
+
+## Handler Class
+**File:** `src/engine/db/handlers/dbKitHandler.java`
+**Class:** `dbKitHandler`
+**Extends:** `dbHandlerBase`
+
+## Database Tables
+
+### Main Kit Table
+- **Table Name:** `static_rune_validkit`
+- **Description:** Stores information about valid kits available in the game, including their properties and restrictions
+- **Columns:** 
+  - UID (Primary Key)
+  - kitName
+  - description
+  - raceRestriction
+  - classRestriction
+  - itemLimit
+  - isAvailable
+
+## Key Queries
+
+### GET_ALL_KITS
+```sql
+SELECT * FROM `static_rune_validkit`
+```
+**File:** `dbKitHandler.java`, Line ~29
+
+### GET_KIT_BY_NAME
+```sql
+SELECT * FROM `static_rune_validkit` WHERE `kitName`=?
+```
+**File:** `dbKitHandler.java`, Line ~45
+
+## Relationships
+
+1. **Kit to Race Restrictions:** Many-to-many relationship through raceRestriction field
+2. **Kit to Class Restrictions:** Many-to-many relationship through classRestriction field
+3. **Kit to Items:** One-to-many relationship via itemLimit referencing items in the game
+
+## Java Field to Database Column Mappings
+
+| Java Field | Database Column | Notes |
+|------------|-----------------|-------|
+| `kitName` | `static_rune_validkit.kitName` | Unique name identifier for the kit |
+| `description` | `static_rune_validkit.description` | Description of the kit's purpose and benefits |
+| `raceRestriction` | `static_rune_validkit.raceRestriction` | Race restriction for the kit |
+| `classRestriction` | `static_rune_validkit.classRestriction` | Class restriction for the kit |
+| `itemLimit` | `static_rune_validkit.itemLimit` | Maximum number of items allowed in this kit |
+| `isAvailable` | `static_rune_validkit.isAvailable` | Boolean flag indicating if kit is currently available |