diff --git a/.claude-plugin/marketplace.json b/.claude-plugin/marketplace.json
index 6adfc3f..94aea5f 100644
--- a/.claude-plugin/marketplace.json
+++ b/.claude-plugin/marketplace.json
@@ -7,7 +7,7 @@
       "name": "haku",
       "source": "./",
       "description": "Git-issue driven planning, orchestrator/worker development and verified merge-to-close for Claude Code (GitHub first)",
-      "version": "0.16.24",
+      "version": "0.16.25",
       "category": "workflow"
     }
   ]
diff --git a/.claude-plugin/plugin.json b/.claude-plugin/plugin.json
index 0bb9937..65762a5 100644
--- a/.claude-plugin/plugin.json
+++ b/.claude-plugin/plugin.json
@@ -1,6 +1,6 @@
 {
   "name": "haku",
-  "version": "0.16.24",
+  "version": "0.16.25",
   "description": "HAKU - Harness Assistant Keeping Users in the loop. Git-issue driven story planning, orchestrator/worker development and verified merge-to-close for Claude Code (GitHub first, GitLab next).",
   "author": { "name": "dongqdev" },
   "license": "MIT",
diff --git a/agents/worker.md b/agents/worker.md
index 12a3b01..fcc8396 100644
--- a/agents/worker.md
+++ b/agents/worker.md
@@ -16,6 +16,8 @@ You are a worker. You own one task issue, one worktree and one branch.
 7. Finish with a summary: each acceptance criterion as met or unmet with evidence, what you did, what you tried that failed, and open risks. Write it to the file the orchestrator names.
    A statement that tests passed must come with the real command and its output in the report (the last lines are enough); "tests pass" alone is not accepted.
 
+Right before the URL, print this one line once, exactly as written (replace N with the issue number): `( o w o )  haku PR ready #N`
+
 Print the full pull request URL and your summary in your final message, not only in the file: a `/goal` check or a stop hook can read only what is printed.
 
 ## Pitfalls
diff --git a/skills/build/SKILL.md b/skills/build/SKILL.md
index 17b9f33..51e4a98 100644
--- a/skills/build/SKILL.md
+++ b/skills/build/SKILL.md
@@ -13,6 +13,14 @@ Helper: `node "${CLAUDE_PLUGIN_ROOT}/scripts/issues.js"` (called `issues.js`).
 
 Every choice you put to the user goes through a choice question (AskUserQuestion), never free text, and a risky branch is never settled by assuming. Recommended option first, literal UTF-8, no prose questions at reply end, never postpone. Read the full rule in the `## Decisions` section of `${CLAUDE_PLUGIN_ROOT}/skills/sniff/SKILL.md` before the first question; it applies here unchanged.
 
+## Banner
+
+Start by printing this one line once, exactly as written, then continue:
+
+```text
+( o w o )  haku build
+```
+
 ## Loop
 
 1. **Pick ready tasks.** Open `type:task` children whose `Depends-On` issues are closed and whose `Scope` does not overlap a running task. Skip a task labelled `deferred` (the user postponed it) or `blocked`. Never exceed `maxWorkers`.
diff --git a/skills/plan/SKILL.md b/skills/plan/SKILL.md
index 73e6c1e..311df74 100644
--- a/skills/plan/SKILL.md
+++ b/skills/plan/SKILL.md
@@ -13,6 +13,14 @@ Helper: `node "${CLAUDE_PLUGIN_ROOT}/scripts/issues.js"` (called `issues.js`).
 
 Every choice you put to the user goes through a choice question (AskUserQuestion), never free text, and a risky branch is never settled by assuming. Recommended option first, literal UTF-8, no prose questions at reply end, never postpone. Read the full rule in the `## Decisions` section of `${CLAUDE_PLUGIN_ROOT}/skills/sniff/SKILL.md` before the first question; it applies here unchanged.
 
+## Banner
+
+Start by printing this one line once, exactly as written, then continue:
+
+```text
+( o w o )  haku plan
+```
+
 ## 1. Understand
 
 Read the repository (read-only) and the user's goal. Read `.haku/config.json` (assignee, maxWorkers, mergeMode, titlePrefix) from the repository root of the current checkout (that is the file `issues.js` itself reads) and `.haku/verify.json` from the **default branch** to learn which verify profiles exist. If either is missing, stop and point to `/haku:setup`. If the current folder is not a Git repository at all and the user is starting something new, `/haku:setup` starts the new-project flow (names, folder, remote repository); hand over to it instead of stopping.
diff --git a/tests/banner.test.js b/tests/banner.test.js
index 79c0991..6def240 100644
--- a/tests/banner.test.js
+++ b/tests/banner.test.js
@@ -31,3 +31,17 @@ test('the face is compact and the ears, face and mouth share one centre', () =>
   assert.strictEqual(ears.indexOf('___') + 1, 4);
   assert.strictEqual(mouth.indexOf('vvv') + 1, 4);
 });
+
+test('plan and build print a one-line mini banner that fits the column limit', () => {
+  for (const name of ['plan', 'build']) {
+    const text = fs.readFileSync(path.join(__dirname, '..', 'skills', name, 'SKILL.md'), 'utf8');
+    const m = text.match(/## Banner[\s\S]*?```text\n([\s\S]*?)```/);
+    assert.ok(m, `${name}: banner block missing`);
+    assert.strictEqual(m[1], `( o w o )  haku ${name}\n`);
+  }
+});
+
+test('the worker prints a one-line PR banner', () => {
+  const worker = fs.readFileSync(path.join(__dirname, '..', 'agents', 'worker.md'), 'utf8');
+  assert.match(worker, /\( o w o \)  haku PR ready #N/);
+});