feat: add support for stat templates

Introduces a new `template` stat type that allows for table-based
lookups via CSV blocks in markdown files. When a template stat is
rolled, it uses a dice expression defined in the template to select
an entry, applies a label, and automatically updates associated
modifier stats using relative values.

src/components/journal/completions.ts

@@ -15,10 +15,14 @@ import {
   getPathsByExtension,
   getIndexedData,
 } from "../../data-loader/file-index";
-import { parseStatYaml, parseStatCsv } from "../../cli/completions/stat-parser";
-import type { StatDef } from "../../cli/completions/stat-parser";
+import {
+  parseStatYaml,
+  parseStatCsv,
+  parseTemplateCsv,
+} from "../../cli/completions/stat-parser";
+import type { StatDef, StatTemplate } from "../../cli/completions/stat-parser";
 
-export type { StatDef };
+export type { StatDef, StatTemplate };
 
 // ------------------- Types (mirrors CLI) -------------------
 
@@ -47,6 +51,7 @@ export interface JournalCompletions {
   links: LinkCompletion[];
   sparkTables: SparkTableCompletion[];
   stats: StatDef[];
+  statTemplates: StatTemplate[];
 }
 
 export type CompletionsState =
@@ -73,6 +78,9 @@ async function tryServer(): Promise<JournalCompletions | null> {
       links: Array.isArray(data.links) ? data.links : [],
       sparkTables: Array.isArray(data.sparkTables) ? data.sparkTables : [],
       stats: Array.isArray(data.stats) ? data.stats : [],
+      statTemplates: Array.isArray(data.statTemplates)
+        ? data.statTemplates
+        : [],
     };
   } catch {
     return null;
@@ -173,7 +181,24 @@ async function scanClientSide(): Promise<JournalCompletions> {
     }
   }
 
-  return { dice, links, sparkTables, stats };
+  // Stat template scan
+  const statTemplates: StatTemplate[] = [];
+  const templateBlockRegex =
+    /```csv\s+role=stat-template\s+file=(\S+)\s*\n([\s\S]*?)```/gi;
+  for (const filePath of paths) {
+    const content = await getIndexedData(filePath);
+    if (!content) continue;
+
+    templateBlockRegex.lastIndex = 0;
+    let tMatch: RegExpExecArray | null;
+    while ((tMatch = templateBlockRegex.exec(content)) !== null) {
+      const name = tMatch[1];
+      const csv = tMatch[2];
+      statTemplates.push(parseTemplateCsv(csv, filePath, name));
+    }
+  }
+
+  return { dice, links, sparkTables, stats, statTemplates };
 }
 
 function splitTableRow(line: string): string[] | null {
@@ -244,6 +269,12 @@ export function useJournalCompletions(): {
   }
   return {
     state: s,
-    data: { dice: [], links: [], sparkTables: [], stats: [] },
+    data: {
+      dice: [],
+      links: [],
+      sparkTables: [],
+      stats: [],
+      statTemplates: [],
+    },
   };
 }