feat: add stat-modifiers role for automatic stat generation

Introduces a new `stat-modifiers` CSV role that simplifies the
creation of template stats and their associated modifier stats.
A single CSV block now automatically generates:
- A template stat definition.
- Multiple modifier stat definitions (prefixed with the template ID).
- The corresponding template table.

This reduces the need for manual YAML definitions for every
modifier associated with a template.

src/cli/completions/block-processor.ts

@@ -12,6 +12,7 @@ import {
   parseStatYaml,
   parseStatCsv,
   parseTemplateCsv,
+  parseStatModifiers,
   type StatDef,
   type StatTemplate,
 } from "./stat-parser.js";
@@ -111,6 +112,14 @@ export function processBlocks(
         );
       }
 
+      if (attrs.role === "stat-modifiers") {
+        const id = attrs.id || `_mod_${contentHash(body)}`;
+        const result = parseStatModifiers(body, fileRelativePath, id);
+        blocks.stats.push(result.statDef);
+        blocks.stats.push(...result.modifierDefs);
+        blocks.statTemplates.push(result.template);
+      }
+
       if (attrs.role === "spark-table") {
         const parsed = parseSparkTableCsv(body, fileRelativePath, slugger);
         if (parsed) blocks.sparkTables.push(parsed);