fix(tui): normalize animated terminal output in bash tool

packages/opencode/src/cli/cmd/tui/routes/session/index.tsx

@@ -62,6 +62,7 @@ import { Toast, useToast } from "../../ui/toast"
 import { useKV } from "../../context/kv.tsx"
 import { Editor } from "../../util/editor"
 import stripAnsi from "strip-ansi"
+import { normalizeTerminalOutput } from "@tui/util/output"
 import { Footer } from "./footer.tsx"
 import { usePromptRef } from "../../context/prompt"
 import { Filesystem } from "@/util/filesystem"
@@ -1377,7 +1378,11 @@ ToolRegistry.register<typeof BashTool>({
   name: "bash",
   container: "block",
   render(props) {
-    const output = createMemo(() => stripAnsi(props.metadata.output?.trim() ?? ""))
+    const output = createMemo(() => {
+      const raw = props.metadata.output?.trim() ?? ""
+      const sanitized = stripAnsi(raw)
+      return normalizeTerminalOutput(sanitized)
+    })
     const { theme } = useTheme()
     return (
       <>

packages/opencode/src/cli/cmd/tui/util/output.ts

@@ -0,0 +1,140 @@
+// Spinner characters and status prefixes used by CLI tools (ora, clack, listr, etc.)
+const ANIMATED_PREFIXES = [
+  // Quarter-circle spinners (ora "dots" variants)
+  "◒",
+  "◐",
+  "◓",
+  "◑",
+  // Braille spinners (ora default)
+  "⠋",
+  "⠙",
+  "⠹",
+  "⠸",
+  "⠼",
+  "⠴",
+  "⠦",
+  "⠧",
+  "⠇",
+  "⠏",
+  "⣾",
+  "⣽",
+  "⣻",
+  "⢿",
+  "⡿",
+  "⣟",
+  "⣯",
+  "⣷",
+  // ASCII spinners
+  "|",
+  "/",
+  "-",
+  "\\",
+  // Status indicators (clack, listr, etc.) - these prefix "in progress" lines
+  "○",
+  "◇",
+  "●",
+  "◆",
+  "■",
+  "□",
+  "▪",
+  "▫",
+  "►",
+  "▸",
+  "→",
+  "•",
+  "·",
+  "∙",
+  "⋅",
+  "★",
+  "☆",
+  "✓",
+  "✔",
+  "✗",
+  "✘",
+  "⧗",
+  "⧖",
+]
+
+const ANIMATED_PREFIX_SET = new Set(ANIMATED_PREFIXES)
+
+const PROGRESS_BAR = /\[[=>#\-\s.]+\]/g
+const PERCENT_SUFFIX = /\s+\d+(?:\.\d+)?%\s*$/
+const FRACTION_SUFFIX = /\s+\d+\s*\/\s*\d+\s*$/
+const DOT_SUFFIX = /(?:\.{1,}|…)+\s*$/
+
+function stripCarriageReturn(line: string): string {
+  const idx = line.lastIndexOf("\r")
+  if (idx === -1) return line
+  return line.slice(idx + 1)
+}
+
+function hasAnimatedPrefix(line: string): boolean {
+  const trimmed = line.trimStart()
+  for (const symbol of ANIMATED_PREFIX_SET) {
+    if (trimmed.startsWith(symbol)) {
+      return true
+    }
+  }
+  return false
+}
+
+function stripAnimatedPrefix(line: string): string {
+  const trimmed = line.trimStart()
+  for (const symbol of ANIMATED_PREFIXES) {
+    if (trimmed.startsWith(symbol)) {
+      return trimmed.slice(symbol.length).trimStart()
+    }
+  }
+  return trimmed
+}
+
+function normalizeBase(line: string): string {
+  const trimmed = line.trimEnd()
+  if (!trimmed) return ""
+  return stripAnimatedPrefix(trimmed)
+    .replace(PROGRESS_BAR, " ")
+    .replace(PERCENT_SUFFIX, " ")
+    .replace(FRACTION_SUFFIX, " ")
+    .replace(DOT_SUFFIX, " ")
+    .replace(/\s+/g, " ")
+    .trim()
+}
+
+/**
+ * Normalizes terminal output by collapsing animated frames (spinners, progress bars, dots)
+ * and applying carriage-return semantics.
+ *
+ * Lines with animated prefixes (spinners, status indicators) that share the same
+ * base text are collapsed to show only the latest frame.
+ */
+export function normalizeTerminalOutput(text: string): string {
+  const lines = text.split("\n")
+  const result: string[] = []
+  let prev = ""
+  let idx = -1
+
+  for (const raw of lines) {
+    const line = stripCarriageReturn(raw)
+    const animated = hasAnimatedPrefix(line)
+    const base = normalizeBase(line)
+
+    // If this line has an animated prefix and matches the last tracked base, replace it
+    if (animated && base && prev === base && idx >= 0) {
+      result[idx] = line
+      continue
+    }
+
+    result.push(line)
+
+    // Track base text for lines with animated prefixes
+    if (!animated || !base) {
+      prev = ""
+      idx = -1
+      continue
+    }
+    prev = base
+    idx = result.length - 1
+  }
+
+  return result.join("\n")
+}