design: 多线站点改竖向胶囊（端头半圆，沿线束方向）；构建改本地渲染器+TMPDIR 重定向规避 /tmp 配额崩溃

design-refs/mockup/build.sh

@@ -8,6 +8,13 @@ cd "$(dirname "$0")"
 PDF_SKILL_DIR="${PDF_SKILL_DIR:-$HOME/.zcode/cli/plugins/cache/zcode-plugins-official/pdf/0.1.7/skills/pdf}"
 export PDF_SKILL_DIR
 
+# 本地渲染器（固定 headless-shell 规避系统 Chrome 占用；TMPDIR 重定向规避 /tmp 磁盘配额）
+HTML2POSTER="$PWD/tools/html2poster.js"
+H2P_CHROMIUM="${H2P_CHROMIUM:-$HOME/.cache/ms-playwright/chromium_headless_shell-1234/chrome-headless-shell-linux64/chrome-headless-shell}"
+export HTML2POSTER H2P_CHROMIUM
+mkdir -p "$HOME/.cache/h2p-tmp"
+export TMPDIR="$HOME/.cache/h2p-tmp"
+
 STEMS=("$@")
 if [ ${#STEMS[@]} -eq 0 ]; then
   STEMS=(course-shelf components)
@@ -45,7 +52,7 @@ out_dir = sys.argv[1]
 pages = sorted(glob.glob(f"{out_dir}/page-*.html"), key=lambda p: int(re.search(r"(\d+)", os.path.basename(p)).group(1)))
 for p in pages:
     out = p.replace(".html", ".pdf")
-    subprocess.run(["node", f"{os.environ['PDF_SKILL_DIR']}/scripts/html2poster.js", p, "--output", out, "--width", "1280px"], check=True, capture_output=True)
+    subprocess.run(["node", os.environ['HTML2POSTER'], p, "--output", out, "--width", "1280px"], check=True, capture_output=True)
 print(f"[{out_dir}] rendered {len(pages)} pages")
 EOF
 

design-refs/mockup/components.html

@@ -661,7 +661,7 @@
   <div class="story-head">
     <span class="tag">&lt;CourseGraph /&gt;</span>
     <h2>课程路线图 · 线条是构件</h2>
-    <div class="desc">线条构件：直段 / 转角 / 步进 / 分流 / 并线 / 并行 / 站点，横平竖直。并行线逐条不合并；单线圆点、多线扁点。CourseCard 由路线串联成网。</div>
+    <div class="desc">线条构件：直段 / 转角 / 步进 / 分流 / 并线 / 并行 / 站点，横平竖直。并行线逐条不合并；单线圆点、多线胶囊。CourseCard 由路线串联成网。</div>
   </div>
 
   <!-- 构件：RouteLine 八原语（横平竖直 · 小圆角 · 并行不合并） -->
@@ -697,8 +697,8 @@
         <div class="vlabel"><b>dot</b> · 单线圆点（半嵌卡边）</div>
       </div>
       <div class="linecard">
-        <svg width="176" height="44" viewBox="0 0 176 44"><rect x="6" y="8" width="26" height="28" rx="6" fill="#f4f4f2" stroke="#e2e2e0"/><rect x="144" y="8" width="26" height="28" rx="6" fill="#f4f4f2" stroke="#e2e2e0"/><path class="edge" d="M 32 18 H 144"/><path class="edge" d="M 32 22 H 144"/><path class="edge" d="M 32 26 H 144"/><ellipse class="station" cx="144" cy="22" rx="7" ry="4"/></svg>
-        <div class="vlabel"><b>flat</b> · 多线扁点（半嵌卡边）</div>
+        <svg width="176" height="44" viewBox="0 0 176 44"><rect x="6" y="8" width="26" height="28" rx="6" fill="#f4f4f2" stroke="#e2e2e0"/><rect x="144" y="8" width="26" height="28" rx="6" fill="#f4f4f2" stroke="#e2e2e0"/><path class="edge" d="M 32 18 H 144"/><path class="edge" d="M 32 22 H 144"/><path class="edge" d="M 32 26 H 144"/><rect class="station" x="141" y="15" width="6" height="14" rx="3"/></svg>
+        <div class="vlabel"><b>flat</b> · 多线胶囊（半嵌卡边）</div>
       </div>
     </div>
   </div>
@@ -747,11 +747,11 @@
       <circle class="station" cx="440" cy="252" r="2.8"/>
       <circle class="station" cx="440" cy="265" r="2.8"/>
       <circle class="station" cx="508" cy="322" r="2.8"/>
-      <ellipse class="station" cx="724" cy="194" rx="8" ry="4"/>
+      <rect class="station" x="721" y="187" width="6" height="14" rx="3"/>
       <circle class="station" cx="860" cy="194" r="2.8"/>
     </svg>
     <div style="position:absolute; right:14px; top:262px; font-size:11px; color:#6b6b6b;">→ 下一程：③ 高级教程</div>
-    <div style="position:absolute; right:12px; top:10px; font-size:11px; color:#6b6b6b;">分流 ×1 · 三线并行 ×1 · 圆点 ×10 · 扁点 ×1</div>
+    <div style="position:absolute; right:12px; top:10px; font-size:11px; color:#6b6b6b;">分流 ×1 · 三线并行 ×1 · 圆点 ×10 · 胶囊 ×1</div>
   </div>
 
   <div style="position:absolute; top: 138px; left: 948px; width: 292px;" class="panel">
@@ -761,7 +761,7 @@
       <tr><td class="k"><code>path</code></td><td>Segment[]</td><td>直段/转角/步进序列</td></tr>
       <tr><td class="k"><code>forks</code></td><td>Fork[]</td><td>分流岔口（分出车道）</td></tr>
       <tr><td class="k"><code>merges</code></td><td>Merge[]</td><td>直角并线点</td></tr>
-      <tr><td class="k"><code>stations</code></td><td>Node[]</td><td>单线圆点 / 多线扁点，半嵌卡边</td></tr>
+      <tr><td class="k"><code>stations</code></td><td>Node[]</td><td>单线圆点 / 多线胶囊，半嵌卡边</td></tr>
       <tr><td class="k"><code>status</code></td><td>无 prop</td><td>不在图上编码</td></tr>
     </table>
   </div>
@@ -771,7 +771,7 @@
     <div class="note" style="margin-bottom:4px;"><span class="idx">2</span><span class="txt"><b>背景级线条</b>：鼠尾草绿 <code>#A2B49B</code> · 1.4px · 划隙 4:2；站点 <code>#758C72</code> 半嵌卡边。</span></div>
     <div class="note" style="margin-bottom:4px;"><span class="idx">3</span><span class="txt"><b>横平竖直</b>：走向只有水平与垂直，转折用小圆角 R8。</span></div>
     <div class="note" style="margin-bottom:4px;"><span class="idx">4</span><span class="txt"><b>并行不合并</b>：多线并行逐条渲染，间距 4px，不合成一条。</span></div>
-    <div class="note" style="margin-bottom:4px;"><span class="idx">5</span><span class="txt"><b>站点随线变形</b>：单线 → 圆点 r2.8；多线入同一卡口 → 扁点 rx8×ry4。</span></div>
+    <div class="note" style="margin-bottom:4px;"><span class="idx">5</span><span class="txt"><b>站点随线变形</b>：单线 → 圆点；多线 → 沿线束方向的胶囊（6×14，端头半圆）。</span></div>
     <div class="note" style="margin-bottom:0;"><span class="idx">6</span><span class="txt">顺序为<b>示例占位</b>，填 courses.ts 自动更新。</span></div>
   </div>
 

design-refs/mockup/tools/html2poster.js

@@ -0,0 +1,294 @@
+#!/usr/bin/env node
+/**
+ * html2poster.js — Single-page poster/long-image HTML → PDF converter
+ *
+ * Purpose: Convert a fixed-width, dynamic-height HTML poster into a single-page
+ * vector PDF with zero margins. This script is PURPOSE-BUILT for posters and
+ * infographics — it does NOT handle multi-page documents, A4 pagination, or
+ * document-style margins. For those, use html2pdf-next.js.
+ *
+ * Usage:
+ *   node html2poster.js poster.html
+ *   node html2poster.js poster.html --output out.pdf
+ *   node html2poster.js poster.html --width 720px
+ *   node html2poster.js poster.html --width 720px --max-height 8000
+ *
+ * What it does (in order):
+ *   1. Load HTML in Playwright
+ *   2. Force overflow:hidden on .poster/.page containers (clip decorative overflow)
+ *   3. Inject @page { margin: 0 } (override any existing margin)
+ *   4. Ensure html/body have margin:0, padding:0, matching background
+ *   5. Measure .poster scrollHeight (actual content height)
+ *   6. Generate single-page PDF with exact dimensions
+ *
+ * What it does NOT do:
+ *   - No pagination / page breaks
+ *   - No A4 fallback
+ *   - No margin injection (always zero)
+ *   - No cover adaptation
+ *   - No pdf-lib post-processing
+ *   - No continuous-canvas detection
+ *   - No vertical overflow expansion (posters WANT overflow:hidden)
+ */
+
+const fs = require('fs');
+const path = require('path');
+const { execSync, spawnSync } = require('child_process');
+
+// ── Playwright resolution ──
+
+function loadPlaywright() {
+  for (const name of ['playwright', 'playwright-core']) {
+    try { return require(name); } catch (_) {}
+  }
+
+  // Node never searches npm's global dir, and when node itself was installed
+  // into a private prefix, playwright is usually installed right next to it.
+  // Resolve both by hand instead of reporting "not installed".
+  const Module = require('module');
+  const roots = new Set();
+  if (process.env.PLAYWRIGHT_PATH) roots.add(process.env.PLAYWRIGHT_PATH);
+  if (process.env.NODE_PATH) {
+    process.env.NODE_PATH.split(path.delimiter).filter(Boolean).forEach(p => roots.add(p));
+  }
+  // <prefix>/bin/node  ->  <prefix>/node_modules
+  roots.add(path.join(path.dirname(process.execPath), '..', 'node_modules'));
+  try {
+    const g = execSync('npm root -g', { stdio: ['ignore', 'pipe', 'ignore'] }).toString().trim();
+    if (g) roots.add(g);
+  } catch (_) {}
+
+  for (const base of roots) {
+    for (const name of ['playwright', 'playwright-core']) {
+      const dir = path.join(base, name);
+      if (!fs.existsSync(path.join(dir, 'package.json'))) continue;
+      // Require by absolute path — createRequire() would still walk the
+      // node_modules chain and miss roots not named node_modules.
+      try { return Module.createRequire(__filename)(dir); } catch (_) {}
+    }
+  }
+  return null;
+}
+
+// ── Chromium resolution (shared logic with html2pdf-next.js) ──
+
+function resolveChromium(chromiumObj) {
+  let exe;
+  try { exe = chromiumObj.executablePath(); } catch (_) { exe = null; }
+  if (exe && fs.existsSync(exe)) return { status: 'ok', executablePath: exe };
+
+  const candidates = [
+    '/Applications/Google Chrome.app/Contents/MacOS/Google Chrome',
+    '/Applications/Chromium.app/Contents/MacOS/Chromium',
+    '/usr/bin/chromium-browser', '/usr/bin/chromium', '/usr/bin/google-chrome',
+  ];
+  if (process.env.PLAYWRIGHT_CHROMIUM_PATH) candidates.unshift(process.env.PLAYWRIGHT_CHROMIUM_PATH);
+
+  for (const c of candidates) {
+    if (fs.existsSync(c)) return { status: 'fallback', executablePath: c };
+  }
+  return { status: 'missing', executablePath: exe || '' };
+}
+
+// ── CLI parsing ──
+
+function parseArgs(argv) {
+  const tokens = argv.slice(2);
+  let input = null, output = null, width = '720px', maxHeight = 16000;
+
+  for (let i = 0; i < tokens.length; i++) {
+    const t = tokens[i];
+    if (t === '--output' || t === '-o') output = tokens[++i];
+    else if (t === '--width') width = tokens[++i];
+    else if (t === '--max-height') maxHeight = parseInt(tokens[++i], 10);
+    else if (t === '--help' || t === '-h') {
+      console.log(`
+Usage: node html2poster.js <input.html> [options]
+
+Options:
+  --output, -o    Output PDF path (default: input with .pdf extension)
+  --width         Poster width (default: 720px)
+  --max-height    Maximum allowed height in px (default: 16000, safety limit)
+  -h, --help      Show this help
+`);
+      process.exit(0);
+    }
+    else if (!input) input = t;
+    else if (!output) output = t;
+  }
+
+  if (!input) {
+    console.error('Error: No input HTML file specified.');
+    process.exit(1);
+  }
+
+  if (!output) {
+    output = input.replace(/\.html?$/i, '.pdf');
+    if (output === input) output = input + '.pdf';
+  }
+
+  return { input, output, width, maxHeight };
+}
+
+// ── Main ──
+
+async function main() {
+  const { input, output, width, maxHeight } = parseArgs(process.argv);
+  const absIn = path.resolve(input);
+  const absOut = path.resolve(output);
+
+  if (!fs.existsSync(absIn)) {
+    console.error(`Error: File not found: ${absIn}`);
+    process.exit(1);
+  }
+
+  console.log(`\n🖼  html2poster — Single-page poster PDF generator`);
+  console.log(`   Input:  ${absIn}`);
+  console.log(`   Output: ${absOut}`);
+  console.log(`   Width:  ${width}`);
+
+  // Load Playwright
+  const playwright = loadPlaywright();
+  if (!playwright) {
+    console.error('Error: playwright or playwright-core not installed.');
+    console.error(`       Searched: require paths, PLAYWRIGHT_PATH, NODE_PATH,`);
+    console.error(`                 ${path.join(path.dirname(process.execPath), '..', 'node_modules')}, npm root -g`);
+    process.exit(1);
+  }
+
+  const { chromium } = playwright;
+  const bInfo = resolveChromium(chromium);
+
+  if (bInfo.status === 'missing') {
+    console.error('Error: No Chromium found. Run: npx playwright install chromium');
+    process.exit(1);
+  }
+  if (bInfo.status === 'fallback') {
+    console.log(`   ⚠ Using fallback Chromium: ${bInfo.executablePath}`);
+  }
+
+  // Launch browser
+  // 本地补丁：H2P_CHROMIUM 强制指定浏览器可执行文件，避免与用户正在使用的系统 Chrome 冲突；
+  // TMPDIR 由 build.sh 重定向到非配额磁盘（/tmp 配额超限会导致渲染子进程崩溃）。
+  const launchOpts = { headless: true };
+  if (process.env.H2P_CHROMIUM && fs.existsSync(process.env.H2P_CHROMIUM)) {
+    launchOpts.executablePath = process.env.H2P_CHROMIUM;
+  } else if (bInfo.status === 'fallback') {
+    launchOpts.executablePath = bInfo.executablePath;
+  }
+
+  const browser = await chromium.launch(launchOpts);
+
+  try {
+    // Use a wide viewport so content doesn't wrap unexpectedly
+    const widthPx = parseInt(width, 10) || 720;
+    const page = await browser.newPage({ viewport: { width: widthPx, height: 1200 } });
+
+    await page.goto('file://' + absIn, { waitUntil: 'networkidle' });
+    console.log(`\n   ✓ HTML loaded`);
+
+    // ── Step 1: Force overflow:hidden on page containers ──
+    // Decorative elements with negative offsets or width>100% inflate scrollWidth,
+    // causing Playwright to shrink content to fit. overflow:hidden clips them.
+    const overflowFixed = await page.evaluate(() => {
+      const selectors = ['.poster', '.page', '#poster', '#page'];
+      let fixed = 0;
+      for (const sel of selectors) {
+        const el = document.querySelector(sel);
+        if (!el) continue;
+        const computed = getComputedStyle(el);
+        if (computed.overflow !== 'hidden') {
+          el.style.overflow = 'hidden';
+          fixed++;
+        }
+      }
+      return fixed;
+    });
+    if (overflowFixed > 0) {
+      console.log(`   ✓ Added overflow:hidden to ${overflowFixed} container(s)`);
+    }
+
+    // ── Step 2: Inject @page { margin: 0 } — override any existing @page rule ──
+    await page.evaluate(() => {
+      const s = document.createElement('style');
+      // Use !important-equivalent: place at end so it wins cascade
+      s.textContent = `@page { margin: 0 !important; size: auto; }`;
+      document.head.appendChild(s);
+    });
+
+    // ── Step 3: Ensure html/body have zero margin/padding ──
+    const bgSync = await page.evaluate(() => {
+      const html = document.documentElement;
+      const body = document.body;
+      html.style.margin = '0';
+      html.style.padding = '0';
+      body.style.margin = '0';
+      body.style.padding = '0';
+
+      // Sync body background with poster background to avoid color gaps
+      const poster = document.querySelector('.poster') || document.querySelector('.page');
+      if (poster) {
+        const posterBg = getComputedStyle(poster).backgroundColor;
+        if (posterBg && posterBg !== 'rgba(0, 0, 0, 0)' && posterBg !== 'transparent') {
+          body.style.backgroundColor = posterBg;
+          html.style.backgroundColor = posterBg;
+          return posterBg;
+        }
+      }
+      return null;
+    });
+    if (bgSync) {
+      console.log(`   ✓ Synced body background: ${bgSync}`);
+    }
+
+    // ── Step 4: Measure actual content height ──
+    const measurement = await page.evaluate(() => {
+      const poster = document.querySelector('.poster') || document.querySelector('.page') || document.body;
+      return {
+        scrollHeight: poster.scrollHeight,
+        scrollWidth: poster.scrollWidth,
+        offsetWidth: poster.offsetWidth,
+        selector: poster.className ? '.' + poster.className.split(' ')[0] : poster.tagName,
+      };
+    });
+
+    console.log(`   ✓ Measured: ${measurement.selector} = ${measurement.scrollWidth}×${measurement.scrollHeight}px`);
+
+    if (measurement.scrollWidth > widthPx + 2) {
+      console.log(`   ⚠ WARNING: scrollWidth (${measurement.scrollWidth}px) > width (${widthPx}px)`);
+      console.log(`     Decorative elements may still overflow. Check for position:absolute elements with negative offsets.`);
+    }
+
+    let contentHeight = measurement.scrollHeight;
+    if (contentHeight > maxHeight) {
+      console.log(`   ⚠ Content height ${contentHeight}px exceeds max ${maxHeight}px, clamping.`);
+      contentHeight = maxHeight;
+    }
+    if (contentHeight < 100) {
+      console.log(`   ⚠ Content height ${contentHeight}px seems too small, using 960px fallback.`);
+      contentHeight = 960;
+    }
+
+    // ── Step 5: Generate PDF ──
+    console.log(`\n   📄 Generating PDF: ${width} × ${contentHeight}px`);
+    await page.pdf({
+      path: absOut,
+      width: width,
+      height: contentHeight + 'px',
+      printBackground: true,
+      margin: { top: '0', right: '0', bottom: '0', left: '0' },
+    });
+
+    console.log(`\n   ✅ Done: ${absOut}`);
+    console.log(`      Size: ${(fs.statSync(absOut).size / 1024).toFixed(1)} KB`);
+
+  } finally {
+    await browser.close();
+  }
+}
+
+main().catch(err => {
+  console.error(`\n✗ Fatal: ${err.message}`);
+  process.exit(1);
+});
+