diff --git a/PROGRESS.md b/PROGRESS.md
index 8222beb..0fec2f9 100644
--- a/PROGRESS.md
+++ b/PROGRESS.md
@@ -21,6 +21,9 @@
 
 ## 已完成关键能力
 
+### 2026-07-01 / ppt 页数必须用户显式拍板(bump 0.34.2)
+用户反馈:ppt skill 生成时页数总默认到 ~12 张,页数从没被真正确认过。根因是行为层:a–h 八条对齐里 b 项(页数)只给「常 8–15 页」区间,又被打包进整批 BLOCKING 确认,用户一句笼统「OK」就整批过、模型自取区间中位数(~12)。修(纯文档):`SKILL.md` b 项改为推**一个具体数字**+ 标为「独立拍板项」;a–h 表后新增「🔒 页数 gate(不可默认放行)」——用户没给/没显式认可具体张数时必须单独追问「就定 N 页?」拿到明确整数才写逐页大纲,禁止用区间中位数当默认(唯一例外:用户明说「页数你随意」时按推荐数走、仍在预览写出数字供否掉);`strategist.md §b` 同步补 Non-defaultable gate 硬约束。
+
 ### 2026-07-01 / web 清空对话同步清空右侧导航条(bump 0.34.1)
 用户反馈:web 端「清空对话」后右侧的导航条(msg-outline-rail 目录圆点)没跟着清空,还留着旧轮次锚点。根因:`chat.js` `clearMessages()` 清空后只 `renderMessages([])`,没重置 outline 状态(切 task 路径 line 344 有 `state.outline=[]; renderOutlineRail()`,清空路径漏了)。修:clearMessages 成功分支补一行 `state.outline = []; renderOutlineRail();`,与切 task 同款。
 
diff --git a/core/__init__.py b/core/__init__.py
index 244606c..08b27c2 100644
--- a/core/__init__.py
+++ b/core/__init__.py
@@ -1,3 +1,3 @@
 # zcbot 版本号单一事实源:web/app.py 的 FastAPI version、/healthz 返回、前端展示都引这里。
 # 改版本只动这一行。
-__version__ = "0.34.1"
+__version__ = "0.34.2"
diff --git a/skills/ppt/SKILL.md b/skills/ppt/SKILL.md
index 442f676..b808f19 100644
--- a/skills/ppt/SKILL.md
+++ b/skills/ppt/SKILL.md
@@ -86,7 +86,7 @@ description: 生成 PowerPoint 演示文稿 (.pptx) 文件。✅ 触发:用户
 | # | 项 | 默认 |
 |---|----|------|
 | a | 画布 | **16:9**(viewBox `0 0 1280 720`)。其它见 canvas-formats.md |
-| b | 页数 | 内容量 × 投递目的推导;**封面 + 正文 + 尾页**,常 8–15 页 |
+| b | 页数 | **独立拍板项(见下方「页数 gate」)**:按内容量 × 投递目的推**一个具体数字**(如「建议 10 页」),不甩「常 8–15」这种区间就想过;**封面 + 正文 + 尾页** |
 | c | 受众 + 核心信息 + 投递目的 | 看材料推断受众;投递目的 `text`(读)/`balanced`(商务,默认)/`presentation`(演讲)定正文字号与密度 |
 | d | mode + visual_style | mode 选 5 骨架之一;**visual_style 给 ≥3 个候选**(safe/shifted/bold)让用户挑 —— 这是观感主轴 |
 | e | 配色 | 按 visual_style + 内容**派生 ≥3 套候选**(每套含 bg/primary/accent/text…);自由设计默认 |
@@ -94,6 +94,8 @@ description: 生成 PowerPoint 演示文稿 (.pptx) 文件。✅ 触发:用户
 | g | 字体 + 字号 | CJK+Latin 字体栈(栈尾必须是预装字体,见 shared-standards §字体);正文字号按投递目的一个定值;公式策略 mixed/render-all/text-only |
 | h | 配图 | `none`/`ai`(走 imagegen skill)/`provided`/`placeholder`;ai 要定 image_rendering + image_palette(deck 级锁)。**用户没给图时别默认整本 none**:封面/分节/概念/氛围页主动把 `ai` 配图作为候选提给用户(数据/列表/流程页仍走图表→§VII,不配装饰图);提议免费,只有用户确认后 imagegen 才花钱(成本门见阶段二)。见 strategist.md §h |
 
+> 🔒 **页数 gate(不可默认放行)**:页数是**唯一必须拿到用户明确数字**才能往下走的项。给完 a–h 推荐后,若用户只回笼统的「可以 / OK / 你定」而**没给出、也没逐字认可一个具体张数**,⛔ **必须单独再追问一句「这份就定 N 页,可以吗?」** —— 拿到明确整数(用户报的数,或对你推荐数的显式点头)后,才用这个数去写逐页大纲。**禁止**把区间中位数(如 ~12)当默认值自行敲定、绕过用户。**唯一例外**:用户明确说「页数你随意 / 不重要 / 你定就行」时,按你的推荐数走、不再追问(但仍要在预览里写出这个数,让用户有机会否掉)。逐页大纲的页数 = 已确认的这个数,一页不多一页不少(封面 + 正文 + 尾页含在内)。
+
 **逐页大纲**(写进 design_spec.md §IX,也是 spec_lock 的 page_rhythm/page_layouts 依据):**论断式标题 + 每页标节奏**(`anchor`/`dense`/`breathing`)。三条硬纪律(大纲阶段定死):
 - **论断标题**:写结论不写主题("渗透率破 60%" 不是 "行业背景");
 - **节奏不雷同**:相邻内容页不同版式;narrative 真正停顿处插 `breathing`(单概念/金句/大图,**禁多卡网格**);不要为凑节奏造填充页;
diff --git a/skills/ppt/references/strategist.md b/skills/ppt/references/strategist.md
index 323f81f..492280c 100644
--- a/skills/ppt/references/strategist.md
+++ b/skills/ppt/references/strategist.md
@@ -45,7 +45,9 @@ Recommend format based on scenario (see [`canvas-formats.md`](canvas-formats.md)
 
 ### b. Page Count Confirmation
 
-**Tier-2 (derived).** Page count is not an anchor — recommend it only after the Tier-1 delivery purpose is confirmed, since the same source yields a different count by purpose. Provide a specific page count recommendation based on source document content volume **and the confirmed delivery purpose** (`text` packs denser → the same source fits in fewer pages; `presentation` is one-idea-per-page → the same source may need more) — see §6.1 Content Planning Strategy. The user's confirmed count still wins; delivery purpose governs density and per-page treatment within it.
+**Tier-2 (derived).** Page count is not an anchor — recommend it only after the Tier-1 delivery purpose is confirmed, since the same source yields a different count by purpose. Provide a **specific number** (e.g. "10 pages"), not a range — a range lets the model silently settle on the midpoint. Base it on source content volume **and the confirmed delivery purpose** (`text` packs denser → the same source fits in fewer pages; `presentation` is one-idea-per-page → the same source may need more) — see §6.1 Content Planning Strategy.
+
+> 🔒 **Non-defaultable gate.** Page count is the one item that MUST be pinned to an explicit user-confirmed integer before the §IX outline is drafted. A blanket "OK / you decide" that does not name or endorse a specific count does **not** clear it — ask once more ("so, N pages?") and wait. Never adopt a range-midpoint (~12) as a silent default. **Sole exception:** if the user explicitly says the count is up to you / doesn't matter, proceed on your recommendation without re-asking — but still surface the number in the preview so they can veto it. The confirmed number is exactly the outline length (cover + body + closing included). The user's number always wins; delivery purpose governs density and per-page treatment within it, never the count itself.
 
 ### c. Key Information Confirmation