Significant work done porting to headless engine

procedural/src/engine/support/coa-generator_render.md

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+# Removed Rendering/UI Logic from coa-generator.js
+
+The following DOM manipulation and UI-related code blocks have been **removed** from the core engine module and should be moved to the Viewer application:
+
+## DOM Element Access - Lines 2269-2271
+
+**Removed Code:**
+```javascript
+const emblemShape = document.getElementById("emblemShape");
+const shapeGroup = emblemShape.selectedOptions[0]?.parentNode.label || "Diversiform";
+if (shapeGroup !== "Diversiform") return emblemShape.value;
+```
+
+**Location**: Originally in `getShield()` function (lines 2269-2271)
+**Reason**: Direct DOM access via `document.getElementById()` and manipulation of select element options
+**Replacement**: These values should be read by the Viewer and passed via the `config` parameter
+
+## DOM Value Reading - Line 2273
+
+**Removed Code:**
+```javascript
+if (emblemShape.value === "state" && state && pack.states[state].coa) return pack.states[state].coa.shield;
+```
+
+**Location**: Originally in `getShield()` function (line 2273)  
+**Reason**: Direct access to DOM element `.value` property
+**Replacement**: The `emblemShape` value should be passed via `config.emblemShape`
+
+## Error Console Logging - Line 2275
+
+**Removed Code:**
+```javascript
+ERROR && console.error("Shield shape is not defined on culture level", pack.cultures[culture]);
+```
+
+**Location**: Originally in `getShield()` function (line 2275)
+**Reason**: Global `ERROR` variable dependency and console error logging
+**Replacement**: Error handling should be implemented by the calling Viewer code
+
+## Summary
+
+All removed code was related to:
+1. **DOM Element Selection**: `document.getElementById("emblemShape")`
+2. **DOM Property Access**: `.selectedOptions[0]?.parentNode.label`, `.value`
+3. **Global Variable Dependencies**: `ERROR` variable
+4. **Direct Console Logging**: `console.error()` calls
+
+These UI concerns should now be handled by the Viewer application, which will read the DOM values and pass them to the core engine via the config parameter.