fix: resolve CI failures across all GitHub Actions workflows

- Fix ruff format issue in doc_scraper.py
- Add pytest skip markers for browser renderer tests when Playwright is
  not installed in CI
- Replace broken Python heredocs in 4 workflow YAML files
  (scheduled-updates, vector-db-export, quality-metrics, test-vector-dbs)
  with python3 -c calls to fix YAML parsing errors

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

.github/workflows/quality-metrics.yml

@@ -88,48 +88,43 @@ jobs:
           echo "🔍 Analyzing $SKILL_NAME..."
 
           # Run quality analysis
-          python3 << 'EOF' "$skill_dir" "$THRESHOLD" "$SKILL_NAME"
-import sys
-from pathlib import Path
-sys.path.insert(0, 'src')
+          python3 -c "
+          import sys
+          from pathlib import Path
 
-from skill_seekers.cli.quality_metrics import QualityAnalyzer
+          from skill_seekers.cli.quality_metrics import QualityAnalyzer
 
-skill_dir = Path(sys.argv[1])
-threshold = float(sys.argv[2])
-skill_name = sys.argv[3]
+          skill_dir = Path('$skill_dir')
+          threshold = float('$THRESHOLD')
+          skill_name = '$SKILL_NAME'
 
-analyzer = QualityAnalyzer(skill_dir)
-report = analyzer.generate_report()
+          analyzer = QualityAnalyzer(skill_dir)
+          report = analyzer.generate_report()
 
-# Print formatted report
-formatted = analyzer.format_report(report)
-print(formatted)
+          formatted = analyzer.format_report(report)
+          print(formatted)
 
-# Save individual report
-with open(f'quality_{skill_name}.txt', 'w') as f:
-    f.write(formatted)
+          with open(f'quality_{skill_name}.txt', 'w') as f:
+              f.write(formatted)
 
-# Add to summary
-score = report.overall_score.total_score
-grade = report.overall_score.grade
-status = "✅" if score >= threshold else "❌"
+          score = report.overall_score.total_score
+          grade = report.overall_score.grade
+          status = 'PASS' if score >= threshold else 'FAIL'
 
-summary_line = f"{status} **{skill_name}**: {grade} ({score:.1f}/100)"
-print(f"\n{summary_line}")
+          summary_line = f'{status} **{skill_name}**: {grade} ({score:.1f}/100)'
+          print(f'\n{summary_line}')
 
-with open('quality_summary.md', 'a') as f:
-    f.write(f"{summary_line}\n")
+          with open('quality_summary.md', 'a') as f:
+              f.write(f'{summary_line}\n')
 
-# Set metrics as annotations
-if score < threshold:
-    print(f"::error file={skill_dir}/SKILL.md::Quality score {score:.1f} is below threshold {threshold}")
-    sys.exit(1)
-elif score < 80:
-    print(f"::warning file={skill_dir}/SKILL.md::Quality score {score:.1f} could be improved")
-else:
-    print(f"::notice file={skill_dir}/SKILL.md::Quality score {score:.1f} - Excellent!")
-EOF
+          if score < threshold:
+              print(f'::error file={skill_dir}/SKILL.md::Quality score {score:.1f} is below threshold {threshold}')
+              sys.exit(1)
+          elif score < 80:
+              print(f'::warning file={skill_dir}/SKILL.md::Quality score {score:.1f} could be improved')
+          else:
+              print(f'::notice file={skill_dir}/SKILL.md::Quality score {score:.1f} - Excellent!')
+          "
 
           if [ $? -ne 0 ]; then
             ALL_PASSED=false