fix(init): simplify LoggingUI output for non-TTY consumers

src/lib/init/ui/logging-ui.ts

@@ -83,10 +83,10 @@ export class LoggingUI implements WizardUI {
 
   // ── Lifecycle ─────────────────────────────────────────────────────
 
-  banner(art: string): void {
-    // Plain stderr write, no markdown rendering — the banner already
-    // contains its own ANSI styling and shouldn't be re-processed.
-    this.stderr.write(`\n${art}\n\n`);
+  banner(_art: string): void {
+    // No-op — LoggingUI is used in non-TTY / CI contexts where the
+    // large ASCII banner wastes vertical space and adds noise for
+    // programmatic consumers (agents, scripts, piped output).
   }
 
   intro(title: string): void {
@@ -157,12 +157,12 @@ export class LoggingUI implements WizardUI {
       start: (message?: string) => {
         active = true;
         if (message) {
-          this.writeLine(this.stdout, `... ${this.renderInline(message)}`);
+          this.writeLine(this.stdout, this.renderInline(message));
         }
       },
       message: (message?: string) => {
         if (active && message) {
-          this.writeLine(this.stdout, `... ${this.renderInline(message)}`);
+          this.writeLine(this.stdout, this.renderInline(message));
         }
       },
       stop: (message?: string, code: SpinnerExitCode = 0) => {

test/lib/init/ui/logging-ui.test.ts

@@ -135,15 +135,15 @@ describe("LoggingUI spinner", () => {
     spinner.message("Still working");
     spinner.stop("Done", 0);
     const lines = stdout().split("\n").filter(Boolean);
-    expect(lines).toEqual(["... Working", "... Still working", "ok: Done"]);
+    expect(lines).toEqual(["Working", "Still working", "ok: Done"]);
   });
 
   test("error stop routes to stderr with error prefix", () => {
     const { ui, stdout, stderr } = createUI();
     const spinner = ui.spinner();
     spinner.start("Working");
     spinner.stop("Boom", 1);
-    expect(stdout()).toBe("... Working\n");
+    expect(stdout()).toBe("Working\n");
     expect(stderr()).toBe("error: Boom\n");
   });
 
@@ -170,7 +170,7 @@ describe("LoggingUI spinner", () => {
     spinner.stop("Done");
     spinner.message("ignored");
     const lines = stdout().split("\n").filter(Boolean);
-    expect(lines).toEqual(["... Working", "ok: Done"]);
+    expect(lines).toEqual(["Working", "ok: Done"]);
   });
 });
 
@@ -248,11 +248,11 @@ describe("LoggingUI disposal", () => {
 });
 
 describe("LoggingUI banner", () => {
-  test("writes art to stderr wrapped in newlines", () => {
+  test("is a no-op in non-TTY context", () => {
     const { ui, stdout, stderr } = createUI();
     ui.banner("  ███ SENTRY ███");
     expect(stdout()).toBe("");
-    expect(stderr()).toBe("\n  ███ SENTRY ███\n\n");
+    expect(stderr()).toBe("");
   });
 });