fix(ui): release interrupted markdown highlight jobs

packages/kilo-vscode/tests/unit/markdown-raf-coalesce.test.ts

@@ -57,5 +57,6 @@ describe("Markdown rAF-coalesced parse — regression guard", () => {
     expect(src).toContain("preserveStreamingHighlight(fromEl, toEl, local.streaming ?? false)")
     expect(body).toContain("export function preserveStreamingHighlight")
     expect(body).toMatch(/continues\(before, after\)[\s\S]*queue\(from, after, lang\)/)
+    expect(body).toMatch(/const done = \(\) => \{\s*job\.busy = false\s*if \(!pre\.isConnected\) return/)
   })
 })

packages/ui/src/kilocode/markdown-stream-highlight.ts

@@ -61,13 +61,12 @@ function run(pre: HTMLPreElement, job: Job) {
   const lang = job.lang
   job.busy = true
   const done = () => {
+    job.busy = false
     if (!pre.isConnected) return
     if (job.code !== code || job.lang !== lang) {
-      job.busy = false
       run(pre, job)
       return
     }
-    job.busy = false
   }
   void refresh(pre, code, lang).then(done, done)
 }