fix(cli): restore colored help logo (#20592)

packages/opencode/src/cli/ui.ts

@@ -1,6 +1,7 @@
 import z from "zod"
 import { EOL } from "os"
 import { NamedError } from "@opencode-ai/util/error"
+import { logo as glyphs } from "./logo"
 
 export namespace UI {
   const wordmark = [
@@ -47,12 +48,60 @@ export namespace UI {
   }
 
   export function logo(pad?: string) {
-    const result = []
-    for (const row of wordmark) {
-      if (pad) result.push(pad)
-      result.push(row)
-      result.push(EOL)
+    if (!process.stdout.isTTY && !process.stderr.isTTY) {
+      const result = []
+      for (const row of wordmark) {
+        if (pad) result.push(pad)
+        result.push(row)
+        result.push(EOL)
+      }
+      return result.join("").trimEnd()
     }
+
+    const result: string[] = []
+    const reset = "\x1b[0m"
+    const left = {
+      fg: "\x1b[90m",
+      shadow: "\x1b[38;5;235m",
+      bg: "\x1b[48;5;235m",
+    }
+    const right = {
+      fg: reset,
+      shadow: "\x1b[38;5;238m",
+      bg: "\x1b[48;5;238m",
+    }
+    const gap = " "
+    const draw = (line: string, fg: string, shadow: string, bg: string) => {
+      const parts: string[] = []
+      for (const char of line) {
+        if (char === "_") {
+          parts.push(bg, " ", reset)
+          continue
+        }
+        if (char === "^") {
+          parts.push(fg, bg, "▀", reset)
+          continue
+        }
+        if (char === "~") {
+          parts.push(shadow, "▀", reset)
+          continue
+        }
+        if (char === " ") {
+          parts.push(" ")
+          continue
+        }
+        parts.push(fg, char, reset)
+      }
+      return parts.join("")
+    }
+    glyphs.left.forEach((row, index) => {
+      if (pad) result.push(pad)
+      result.push(draw(row, left.fg, left.shadow, left.bg))
+      result.push(gap)
+      const other = glyphs.right[index] ?? ""
+      result.push(draw(other, right.fg, right.shadow, right.bg))
+      result.push(EOL)
+    })
     return result.join("").trimEnd()
   }