feat(editor): expose stock node projection + types; bump to 0.2.0

Adds stock projection + shared types (StockVariant, StockKLineInterval,
StockKLineRange, StockNodePayload, SerializedStockNode). Lets admin and
yohaku consume one canonical definition instead of redeclaring per app.

Author: Innei

packages/editor/package.json

@@ -1,6 +1,6 @@
 {
   "name": "@mx-space/editor",
-  "version": "0.1.0",
+  "version": "0.2.0",
   "type": "module",
   "description": "Mx-space business editor contracts and projection utilities built on Lexical",
   "license": "MIT",

packages/editor/src/core/nodes/index.ts

@@ -2,3 +2,4 @@ export * from './afilmory'
 export * from './litexml'
 export * from './map'
 export * from './registry'
+export * from './stock'

packages/editor/src/core/nodes/stock.ts

@@ -3,12 +3,26 @@ import { serializeLiteXmlFallbackNode } from './litexml'
 
 export type StockVariant = 'snapshot' | 'kline'
 
-export type StockKLineRange = {
-  interval: string
-  from?: string
-  to?: string
+export type StockKLineInterval = '5m' | '15m' | '1h' | '1d'
+
+export interface StockKLineRange {
+  from: string
+  interval: StockKLineInterval
+  to: string
 }
 
+export type StockNodePayload =
+  | {
+      variant: 'snapshot'
+      symbol: string
+    }
+  | {
+      variant: 'kline'
+      symbol: string
+      range: StockKLineRange
+      ema?: [number, number] | false
+    }
+
 export interface SerializedStockNode {
   $?: {
     blockId?: unknown

packages/editor/test/markdown.test.ts

@@ -116,6 +116,44 @@ describe('mxLexicalToMarkdown', () => {
     )
   })
 
+  it('projects stock snapshot node as LiteXML fallback', () => {
+    const markdown = mxLexicalToMarkdown(
+      state([
+        {
+          type: 'stock',
+          version: 1,
+          variant: 'snapshot',
+          symbol: 'AAPL',
+        },
+      ]),
+    )
+
+    expect(markdown).toContain('<node type="stock"')
+    expect(markdown).toContain('&quot;variant&quot;:&quot;snapshot&quot;')
+    expect(markdown).toContain('&quot;symbol&quot;:&quot;AAPL&quot;')
+  })
+
+  it('projects stock kline node carrying range + ema as LiteXML fallback', () => {
+    const markdown = mxLexicalToMarkdown(
+      state([
+        {
+          type: 'stock',
+          version: 1,
+          variant: 'kline',
+          symbol: 'TSLA',
+          range: { interval: '1day', from: '2026-01-01', to: '2026-06-01' },
+          ema: [12, 26],
+        },
+      ]),
+    )
+
+    expect(markdown).toContain('<node type="stock"')
+    expect(markdown).toContain('&quot;variant&quot;:&quot;kline&quot;')
+    expect(markdown).toContain('&quot;symbol&quot;:&quot;TSLA&quot;')
+    expect(markdown).toContain('&quot;interval&quot;:&quot;1day&quot;')
+    expect(markdown).toContain('&quot;ema&quot;:[12,26]')
+  })
+
   it('throws on unknown node types', () => {
     expect(() =>
       mxLexicalToMarkdown(state([{ type: 'unknown-private', version: 1 }])),