Add reusable dev session files to CLI Kit

.changeset/cli-kit-dev-instance.md

@@ -0,0 +1,5 @@
+---
+'@shopify/cli-kit': minor
+---
+
+Add dev session files for ownership, status, and JSONL logs.

packages/cli-kit/package.json

@@ -147,6 +147,7 @@
     "node-fetch": "3.3.2",
     "open": "8.4.2",
     "pathe": "1.1.2",
+    "proper-lockfile": "4.1.2",
     "react": "19.2.4",
     "semver": "7.8.4",
     "react-dom": "19.2.4",
@@ -163,6 +164,7 @@
     "@types/fs-extra": "9.0.13",
     "@types/gradient-string": "^1.1.2",
     "@types/lodash": "4.17.24",
+    "@types/proper-lockfile": "4.1.4",
     "@types/react": "^19.0.0",
     "@types/react-dom": "^19.0.0",
     "@types/semver": "^7.5.2",

packages/cli-kit/src/private/node/ui/components/ConcurrentOutput.tsx

@@ -57,6 +57,11 @@ function useConcurrentOutputContext<T>(context: ConcurrentOutputContext, callbac
   return outputContextStore.run(context, callback)
 }
 
+/** Returns the source and styling context for the current output write. */
+export function getConcurrentOutputContext(): ConcurrentOutputContext | undefined {
+  return outputContextStore.getStore()
+}
+
 /** Runs finite processes concurrently and routes their output through the shared diagnostic context. */
 export async function runConcurrentProcessesForJson({
   processes,