feat: Add Daggerheart actor item updater module for automatic and manual item synchronization with compendiums.

README.md

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+# Daggerheart Actor Updater
+
+A FoundryVTT module for the Daggerheart system that automatically checks your actors for outdated items against the SRD Compendium.
+
+## Features
+
+-   **Automatic Checks**: Checks for updates on first load and whenever the Daggerheart system version changes.
+-   **Manual Check**: API available for macros/manual checks.
+-   **Detailed Comparison**: Compares names, images, and system data (descriptions, damage, etc.).
+-   **Selective Updates**: Choose which items to update or ignore specific items (e.g., custom homebrew items).
+-   **Supports**: Classes, Subclasses, Ancestries, Communities, Domains, Weapons, Armor, Consumables, Loot, and Beastforms.
+
+## Installation
+
+### Installation via Manifest URL
+
+1.  In Foundry VTT, go to the **Add-on Modules** tab.
+2.  Click **Install Module**.
+3.  Paste the following URL into the **Manifest URL** field:
+    ```
+    https://git.geeks.gay/cosmo/dh-actor-updater/raw/branch/main/module.json
+    ```
+4.  Click **Install**.
+
+## Usage
+
+1.  Enable the module in your world settings.
+2.  On login (if a new system version is detected) or via macro, the "Daggerheart Actor Updater" window will appear if differences are found.
+3.  Review the list of changes.
+4.  Click **Update** to sync with the compendium.
+5.  Click **Ignore** to suppress warnings for a specific item (useful for customized items).
+
+## Manual Check
+
+To manually trigger a check, you can use the button in the module settings or run the following macro code:
+
+```javascript
+game.modules.get('dh-actor-updater').api.checkAll();
+```
+
+## Compatibility
+
+-   **Foundry VTT**: v13+
+-   **Daggerheart System**: Verified on 1.5.4
+
+## Important Note
+
+This module modifies your actor data directly. **Always back up your world** before performing bulk updates, especially if you have significant customizations on your actors.