feat: add support for stat sheet SVG rendering

Introduces the ability to discover and render `*.sheet.svg` files.
These files can contain `<text>` elements with `${key}` templates
that reactively update based on the current journal stats.

- Add `StatSheet` type and CLI scanning logic
- Implement `SheetView` for rendering SVGs with live bindings
- Add `parseSheet` utility to extract template patterns from SVG
- Update file indexer to include `.svg` files

src/cli/completions/block-processor.ts

@@ -22,7 +22,7 @@ import {
   resolveBlockAs,
   parseSparkTableCsv,
 } from "./block-scanner.js";
-import type { SparkTableCompletion } from "./types.js";
+import type { SparkTableCompletion, StatSheet } from "./types.js";
 
 // Re-export shared pieces for convenience
 export {
@@ -41,6 +41,7 @@ export interface ProcessedBlocks {
   stats: StatDef[];
   statTemplates: StatTemplate[];
   sparkTables: SparkTableCompletion[];
+  statSheets: StatSheet[];
 }
 
 export interface BlockResult {
@@ -81,6 +82,7 @@ export function processBlocks(
     stats: [],
     statTemplates: [],
     sparkTables: [],
+    statSheets: [],
   };
 
   const stripped = content.replace(

src/cli/completions/index.ts

@@ -14,6 +14,7 @@ export type {
   SparkTableCompletion,
   StatDef,
   StatTemplate,
+  StatSheet,
 } from "./types.js";
 
 /**
@@ -33,5 +34,6 @@ export function scanCompletions(
     sparkTables: blocks.sparkTables,
     stats: blocks.stats,
     statTemplates: blocks.statTemplates,
+    statSheets: blocks.statSheets,
   };
 }

src/cli/completions/types.ts

@@ -6,6 +6,18 @@ import type { StatDef, StatTemplate } from "./stat-parser.js";
 
 export type { StatDef, StatTemplate };
 
+/** A stat sheet discovered from a *.sheet.svg file */
+export interface StatSheet {
+  /** Unique id — filename sans .sheet.svg */
+  id: string;
+  /** Display label — from <title> or derived from filename */
+  label: string;
+  /** Raw SVG content */
+  svg: string;
+  /** Source file path for attribution */
+  source: string;
+}
+
 /** A single dice expression found in a markdown file */
 export interface DiceCompletion {
   /** Display text shown in the dropdown */
@@ -46,6 +58,7 @@ export interface CompletionsPayload {
   sparkTables: SparkTableCompletion[];
   stats: StatDef[];
   statTemplates: StatTemplate[];
+  statSheets: StatSheet[];
 }
 
 /**