docs: salvage focused stale PR contributions

- add Vite and Redis pattern skills from closed stale PRs - add frontend-slides support assets - port skill-comply runner fixes and LLM prompt/provider regressions - harden agent frontmatter validation and sync catalog counts
2026-05-17 14:23:13 +08:00 · 2026-05-11 05:18:18 -04:00
parent d8f879e671
commit b39d2244cf
28 changed files with 2653 additions and 59 deletions
--- a/skills/frontend-slides/scripts/export-pdf.sh
+++ b/skills/frontend-slides/scripts/export-pdf.sh
@@ -0,0 +1,418 @@
+#!/usr/bin/env bash
+# export-pdf.sh - Export an HTML presentation to PDF
+#
+# Usage:
+#   bash scripts/export-pdf.sh <path-to-html> [output.pdf]
+#
+# Examples:
+#   bash scripts/export-pdf.sh ./my-deck/index.html
+#   bash scripts/export-pdf.sh ./presentation.html ./presentation.pdf
+#
+# What this does:
+#   1. Starts a local server to serve the HTML (fonts and assets need HTTP)
+#   2. Uses Playwright to screenshot each slide at 1920x1080
+#   3. Combines all screenshots into a single PDF
+#   4. Cleans up the server and temp files
+#
+# The PDF preserves colors, fonts, and layout - but not animations.
+# Perfect for email attachments, printing, or embedding in documents.
+set -euo pipefail
+
+# --- Colors ---
+RED='\033[0;31m'
+GREEN='\033[0;32m'
+CYAN='\033[0;36m'
+YELLOW='\033[1;33m'
+BOLD='\033[1m'
+NC='\033[0m'
+
+info()  { echo -e "${CYAN}INFO:${NC} $*"; }
+ok()    { echo -e "${GREEN}OK:${NC} $*"; }
+warn()  { echo -e "${YELLOW}WARNING:${NC} $*"; }
+err()   { echo -e "${RED}ERROR:${NC} $*" >&2; }
+
+# --- Parse flags ---
+
+# Default resolution: 1920x1080 (full HD, ~1-2MB per slide)
+# Compact resolution: 1280x720 (HD, ~50-70% smaller files)
+VIEWPORT_W=1920
+VIEWPORT_H=1080
+COMPACT=false
+
+POSITIONAL=()
+for arg in "$@"; do
+    case $arg in
+        --compact)
+            COMPACT=true
+            VIEWPORT_W=1280
+            VIEWPORT_H=720
+            ;;
+        *)
+            POSITIONAL+=("$arg")
+            ;;
+    esac
+done
+set -- "${POSITIONAL[@]}"
+
+# --- Input validation ---
+
+if [[ $# -lt 1 ]]; then
+    err "Usage: bash scripts/export-pdf.sh <path-to-html> [output.pdf] [--compact]"
+    err ""
+    err "Examples:"
+    err "  bash scripts/export-pdf.sh ./my-deck/index.html"
+    err "  bash scripts/export-pdf.sh ./presentation.html ./slides.pdf"
+    err "  bash scripts/export-pdf.sh ./presentation.html --compact   # smaller file size"
+    exit 1
+fi
+
+INPUT_HTML="$1"
+if [[ ! -f "$INPUT_HTML" ]]; then
+    err "File not found: $INPUT_HTML"
+    exit 1
+fi
+
+# Resolve to absolute path
+INPUT_HTML=$(cd "$(dirname "$INPUT_HTML")" && pwd)/$(basename "$INPUT_HTML")
+
+# Output PDF path: use second argument or derive from input name
+if [[ $# -ge 2 ]]; then
+    OUTPUT_PDF="$2"
+else
+    OUTPUT_PDF="$(dirname "$INPUT_HTML")/$(basename "$INPUT_HTML" .html).pdf"
+fi
+
+# Resolve output to absolute path
+OUTPUT_DIR=$(dirname "$OUTPUT_PDF")
+mkdir -p "$OUTPUT_DIR"
+OUTPUT_PDF="$OUTPUT_DIR/$(basename "$OUTPUT_PDF")"
+
+echo ""
+echo -e "${BOLD}========================================${NC}"
+echo -e "${BOLD}       Export Slides to PDF${NC}"
+echo -e "${BOLD}========================================${NC}"
+echo ""
+
+# --- Step 1: Check dependencies ---
+
+info "Checking dependencies..."
+
+if ! command -v npx &>/dev/null; then
+    err "Node.js is required but not installed."
+    err ""
+    err "Install Node.js:"
+    err "  macOS:   brew install node"
+    err "  or visit https://nodejs.org and download the installer"
+    exit 1
+fi
+
+ok "Node.js found"
+
+# --- Step 2: Create the export script ---
+
+# We use a temporary Node.js script with Playwright to:
+# 1. Start a local server (so fonts load correctly)
+# 2. Navigate to each slide
+# 3. Screenshot each slide at 1920x1080 (16:9 landscape)
+# 4. Combine into a single PDF
+
+TEMP_DIR=$(mktemp -d)
+TEMP_SCRIPT="$TEMP_DIR/export-slides.mjs"
+
+# Figure out which directory to serve (the folder containing the HTML)
+SERVE_DIR=$(dirname "$INPUT_HTML")
+HTML_FILENAME=$(basename "$INPUT_HTML")
+
+cat > "$TEMP_SCRIPT" << 'EXPORT_SCRIPT'
+// export-slides.mjs - Playwright script to export HTML slides to PDF
+//
+// How it works:
+// 1. Starts a local HTTP server (needed for fonts/assets to load)
+// 2. Opens the presentation in a headless browser at 1920x1080
+// 3. Counts the total number of slides
+// 4. Screenshots each slide one by one
+// 5. Generates a PDF with all slides as landscape pages
+
+import { chromium } from 'playwright';
+import { createServer } from 'http';
+import { readFileSync, existsSync, mkdirSync, unlinkSync, writeFileSync } from 'fs';
+import { join, extname, resolve } from 'path';
+import { execSync } from 'child_process';
+
+const SERVE_DIR = process.argv[2];
+const HTML_FILE = process.argv[3];
+const OUTPUT_PDF = process.argv[4];
+const SCREENSHOT_DIR = process.argv[5];
+const VP_WIDTH = parseInt(process.argv[6]) || 1920;
+const VP_HEIGHT = parseInt(process.argv[7]) || 1080;
+
+// --- Simple static file server ---
+// (We need HTTP so that Google Fonts and relative assets load correctly)
+
+const MIME_TYPES = {
+  '.html': 'text/html',
+  '.css': 'text/css',
+  '.js': 'application/javascript',
+  '.json': 'application/json',
+  '.png': 'image/png',
+  '.jpg': 'image/jpeg',
+  '.jpeg': 'image/jpeg',
+  '.gif': 'image/gif',
+  '.svg': 'image/svg+xml',
+  '.webp': 'image/webp',
+  '.woff': 'font/woff',
+  '.woff2': 'font/woff2',
+  '.ttf': 'font/ttf',
+  '.eot': 'application/vnd.ms-fontobject',
+};
+
+const server = createServer((req, res) => {
+  // Decode URL-encoded characters (e.g., %20 -> space) so filenames with spaces resolve correctly
+  const decodedUrl = decodeURIComponent(req.url);
+  let filePath = join(SERVE_DIR, decodedUrl === '/' ? HTML_FILE : decodedUrl);
+  try {
+    const content = readFileSync(filePath);
+    const ext = extname(filePath).toLowerCase();
+    res.writeHead(200, { 'Content-Type': MIME_TYPES[ext] || 'application/octet-stream' });
+    res.end(content);
+  } catch {
+    res.writeHead(404);
+    res.end('Not found');
+  }
+});
+
+// Find a free port
+const port = await new Promise((resolve) => {
+  server.listen(0, () => resolve(server.address().port));
+});
+
+console.log(`  Local server on port ${port}`);
+
+// --- Screenshot each slide ---
+
+const browser = await chromium.launch();
+const page = await browser.newPage({
+  viewport: { width: VP_WIDTH, height: VP_HEIGHT },
+});
+
+// Load the presentation
+await page.goto(`http://localhost:${port}/`, { waitUntil: 'networkidle' });
+
+// Wait for fonts to load
+await page.evaluate(() => document.fonts.ready);
+
+// Extra wait for animations to settle on the first slide
+await page.waitForTimeout(1500);
+
+// Count slides
+const slideCount = await page.evaluate(() => {
+  return document.querySelectorAll('.slide').length;
+});
+
+console.log(`  Found ${slideCount} slides`);
+
+if (slideCount === 0) {
+  console.error('  ERROR: No .slide elements found in the presentation.');
+  console.error('  Make sure your HTML uses <div class="slide"> or <section class="slide">.');
+  await browser.close();
+  server.close();
+  process.exit(1);
+}
+
+// Screenshot each slide
+mkdirSync(SCREENSHOT_DIR, { recursive: true });
+const screenshotPaths = [];
+
+for (let i = 0; i < slideCount; i++) {
+  // Navigate to slide by simulating the presentation's navigation
+  // Most frontend-slides presentations use a currentSlide index and show/hide
+  await page.evaluate((index) => {
+    const slides = document.querySelectorAll('.slide');
+
+    // Try multiple navigation strategies used by frontend-slides:
+
+    // Strategy 1: Direct slide manipulation (most common in generated decks)
+    slides.forEach((slide, idx) => {
+      if (idx === index) {
+        slide.style.display = '';
+        slide.style.opacity = '1';
+        slide.style.visibility = 'visible';
+        slide.style.position = 'relative';
+        slide.style.transform = 'none';
+        slide.classList.add('active');
+      } else {
+        slide.style.display = 'none';
+        slide.classList.remove('active');
+      }
+    });
+
+    // Strategy 2: If there's a SlidePresentation class instance, use it
+    if (window.presentation && typeof window.presentation.goToSlide === 'function') {
+      window.presentation.goToSlide(index);
+    }
+
+    // Strategy 3: Scroll-based (some decks use scroll snapping)
+    slides[index]?.scrollIntoView({ behavior: 'instant' });
+  }, i);
+
+  // Wait for any slide transition animations to finish
+  await page.waitForTimeout(300);
+
+  // Wait for intersection observer animations to trigger
+  await page.waitForTimeout(200);
+
+  // Force all .reveal elements on the current slide to be visible
+  // (animations normally trigger on scroll/intersection, but we need them visible now)
+  await page.evaluate((index) => {
+    const slides = document.querySelectorAll('.slide');
+    const currentSlide = slides[index];
+    if (currentSlide) {
+      currentSlide.querySelectorAll('.reveal').forEach(el => {
+        el.style.opacity = '1';
+        el.style.transform = 'none';
+        el.style.visibility = 'visible';
+      });
+    }
+  }, i);
+
+  await page.waitForTimeout(100);
+
+  const screenshotPath = join(SCREENSHOT_DIR, `slide-${String(i + 1).padStart(3, '0')}.png`);
+  await page.screenshot({ path: screenshotPath, fullPage: false });
+  screenshotPaths.push(screenshotPath);
+  console.log(`  Captured slide ${i + 1}/${slideCount}`);
+}
+
+await browser.close();
+server.close();
+
+// --- Combine screenshots into PDF ---
+// Use a second Playwright page to generate a PDF from the screenshots
+
+console.log('  Assembling PDF...');
+
+const browser2 = await chromium.launch();
+const pdfPage = await browser2.newPage();
+
+// Build an HTML page with all screenshots, one per page
+const imagesHtml = screenshotPaths.map((p) => {
+  const imgData = readFileSync(p).toString('base64');
+  return `<div class="page"><img src="data:image/png;base64,${imgData}" /></div>`;
+}).join('\n');
+
+const pdfHtml = `<!DOCTYPE html>
+<html>
+<head>
+<style>
+  * { margin: 0; padding: 0; }
+  @page { size: ${VP_WIDTH}px ${VP_HEIGHT}px; margin: 0; }
+  .page {
+    width: ${VP_WIDTH}px;
+    height: ${VP_HEIGHT}px;
+    page-break-after: always;
+    overflow: hidden;
+  }
+  .page:last-child { page-break-after: auto; }
+  img {
+    width: ${VP_WIDTH}px;
+    height: ${VP_HEIGHT}px;
+    display: block;
+    object-fit: contain;
+  }
+</style>
+</head>
+<body>${imagesHtml}</body>
+</html>`;
+
+await pdfPage.setContent(pdfHtml, { waitUntil: 'load' });
+await pdfPage.pdf({
+  path: OUTPUT_PDF,
+  width: `${VP_WIDTH}px`,
+  height: `${VP_HEIGHT}px`,
+  printBackground: true,
+  margin: { top: 0, right: 0, bottom: 0, left: 0 },
+});
+
+await browser2.close();
+
+// Clean up screenshots
+screenshotPaths.forEach(p => unlinkSync(p));
+
+console.log(`  OK: PDF saved to: ${OUTPUT_PDF}`);
+EXPORT_SCRIPT
+
+# --- Step 3: Install Playwright in temp directory ---
+# We install Playwright locally in the temp dir so the Node script can import it.
+# This avoids polluting global packages and ensures the script is self-contained.
+
+info "Setting up Playwright (headless browser for screenshots)..."
+info "This may take a moment on first run..."
+echo ""
+
+cd "$TEMP_DIR"
+
+# Create a minimal package.json so npm install works
+cat > "$TEMP_DIR/package.json" << 'PKG'
+{ "name": "slide-export", "private": true, "type": "module" }
+PKG
+
+# Install Playwright into the temp directory
+npm install playwright &>/dev/null || {
+    err "Failed to install Playwright."
+    err "Try running: npm install playwright"
+    rm -rf "$TEMP_DIR"
+    exit 1
+}
+
+# Ensure Chromium browser binary is downloaded
+npx playwright install chromium 2>/dev/null || {
+    err "Failed to install Chromium browser for Playwright."
+    err "Try running manually: npx playwright install chromium"
+    rm -rf "$TEMP_DIR"
+    exit 1
+}
+ok "Playwright ready"
+echo ""
+
+# --- Step 4: Run the export ---
+
+SCREENSHOT_DIR="$TEMP_DIR/screenshots"
+
+info "Exporting slides to PDF..."
+echo ""
+
+# Run from the temp dir so Node can find the locally-installed playwright
+if [[ "$COMPACT" == "true" ]]; then
+    info "Using compact mode (1280x720) for smaller file size"
+fi
+
+node "$TEMP_SCRIPT" "$SERVE_DIR" "$HTML_FILENAME" "$OUTPUT_PDF" "$SCREENSHOT_DIR" "$VIEWPORT_W" "$VIEWPORT_H" || {
+    err "PDF export failed."
+    rm -rf "$TEMP_DIR"
+    exit 1
+}
+
+# --- Step 5: Cleanup and success ---
+
+rm -rf "$TEMP_DIR"
+
+echo ""
+echo -e "${BOLD}========================================${NC}"
+ok "PDF exported successfully!"
+echo ""
+echo -e "  ${BOLD}File:${NC}  $OUTPUT_PDF"
+echo ""
+FILE_SIZE=$(du -h "$OUTPUT_PDF" | cut -f1 | xargs)
+echo "  Size: $FILE_SIZE"
+echo ""
+echo "  This PDF works everywhere - email, Slack, Notion, print."
+echo "  Note: Animations are not preserved (it's a static export)."
+echo -e "${BOLD}========================================${NC}"
+echo ""
+
+# Open the PDF automatically
+if command -v open &>/dev/null; then
+    open "$OUTPUT_PDF"
+elif command -v xdg-open &>/dev/null; then
+    xdg-open "$OUTPUT_PDF"
+fi
--- a/skills/frontend-slides/scripts/extract-pptx.py
+++ b/skills/frontend-slides/scripts/extract-pptx.py
@@ -0,0 +1,96 @@
+#!/usr/bin/env python3
+"""
+Extract all content from a PowerPoint file (.pptx).
+Returns a JSON structure with slides, text, and images.
+
+Usage:
+    python extract-pptx.py <input.pptx> [output_dir]
+
+Requires: pip install python-pptx
+"""
+
+import json
+import os
+import sys
+from pptx import Presentation
+
+
+def extract_pptx(file_path, output_dir="."):
+    """
+    Extract all content from a PowerPoint file.
+    Returns a list of slide data dicts with text, images, and notes.
+    """
+    prs = Presentation(file_path)
+    slides_data = []
+
+    # Create assets directory for extracted images
+    assets_dir = os.path.join(output_dir, "assets")
+    os.makedirs(assets_dir, exist_ok=True)
+
+    for slide_num, slide in enumerate(prs.slides):
+        slide_data = {
+            "number": slide_num + 1,
+            "title": "",
+            "content": [],
+            "images": [],
+            "notes": "",
+        }
+
+        for shape in slide.shapes:
+            # Extract text content
+            if shape.has_text_frame:
+                if shape == slide.shapes.title:
+                    slide_data["title"] = shape.text
+                else:
+                    slide_data["content"].append(
+                        {"type": "text", "content": shape.text}
+                    )
+
+            # Extract images
+            if shape.shape_type == 13:  # Picture type
+                image = shape.image
+                image_bytes = image.blob
+                image_ext = image.ext
+                image_name = f"slide{slide_num + 1}_img{len(slide_data['images']) + 1}.{image_ext}"
+                image_path = os.path.join(assets_dir, image_name)
+
+                with open(image_path, "wb") as f:
+                    f.write(image_bytes)
+
+                slide_data["images"].append(
+                    {
+                        "path": f"assets/{image_name}",
+                        "width": shape.width,
+                        "height": shape.height,
+                    }
+                )
+
+        # Extract speaker notes
+        if slide.has_notes_slide:
+            notes_frame = slide.notes_slide.notes_text_frame
+            slide_data["notes"] = notes_frame.text
+
+        slides_data.append(slide_data)
+
+    return slides_data
+
+
+if __name__ == "__main__":
+    if len(sys.argv) < 2:
+        print("Usage: python extract-pptx.py <input.pptx> [output_dir]")
+        sys.exit(1)
+
+    input_file = sys.argv[1]
+    output_dir = sys.argv[2] if len(sys.argv) > 2 else "."
+
+    slides = extract_pptx(input_file, output_dir)
+
+    # Write extracted data as JSON
+    output_path = os.path.join(output_dir, "extracted-slides.json")
+    with open(output_path, "w") as f:
+        json.dump(slides, f, indent=2)
+
+    print(f"Extracted {len(slides)} slides to {output_path}")
+    for s in slides:
+        img_count = len(s["images"])
+        print(f"  Slide {s['number']}: {s['title'] or '(no title)'} — {img_count} image(s)")