feat(resume): complete Epic 4 - Resume Content Strategy and Guidelines

- Update resume data with comprehensive professional summary and optimized work experience highlights
- Add resume content tech-spec and strategy documentation for 2025 best practices
- Create resume guidelines reference document for content consistency
- Enhance PDF composable with openPdf preview function alongside downloadPdf
- Expand CSS banner hiding rules to block certificates.dev promotional content
- Add research documentation on resume best practices and ATS optimization
- Update i18n translations for resume content in English and Persian
- Include sample Ali Arghyani resume PDF template in design assets
- Refactor resume.en.ts with improved professional positioning and achievement metrics
- Update API route documentation for PDF generation story artifacts
- Establish foundation for Epic 4 sprint planning with tech specifications

docs/resume-content-guide.md

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+# Resume Content Guide 2025
+
+Quick reference for writing resume content. Based on research from 100+ sources.
+
+---
+
+## 📊 Key Statistics
+
+| Stat | Value | Implication |
+|------|-------|-------------|
+| Fortune 500 ATS Usage | 97.8% | Optimize for algorithms first |
+| Rejected Before Human | 75% | Only 1 in 4 resumes reach humans |
+| Initial Scan Time | 6-8 sec | Critical info in top 1/3 |
+| Summary vs Objective | 340% better | Always use Professional Summary |
+| Skills Over Degrees | 81% | Highlight capabilities |
+
+---
+
+## 📋 Section Order
+
+**Experienced (5+ years):**
+1. Contact Information
+2. Professional Summary
+3. Core Competencies/Skills
+4. Work Experience
+5. Education
+6. Optional (Certs, Projects, Languages)
+
+**Early Career (0-5 years):**
+1. Contact Information
+2. Professional Summary
+3. Education
+4. Skills
+5. Work Experience
+6. Optional
+
+---
+
+## ✍️ Professional Summary Formula
+
+```
+Line 1: Title + Years of Experience + Specialization
+Line 2: Specific achievements with quantifiable results
+Line 3: Key skills/tools + relevant certifications
+```
+
+**Example:**
+```
+Senior Frontend Developer with 5+ years of experience in Vue.js and TypeScript.
+Improved application performance by 40% and led development of medical tourism 
+platform with RBAC and i18n features. Expert in Nuxt.js, Tailwind CSS, and PWA.
+```
+
+**Rules:**
+- 2-3 sentences (50-80 words)
+- Lead with strongest achievement
+- Include specific metrics
+- No clichés
+
+---
+
+## 💪 Action Verbs
+
+| Instead of... | Use these |
+|---------------|-----------|
+| "worked on" | Engineered, Spearheaded, Orchestrated, Optimized, Developed |
+| "helped" | Accelerated, Amplified, Catalyzed, Elevated, Enabled |
+| "made" | Architected, Automated, Transformed, Revolutionized, Built |
+| "managed" | Championed, Coached, Mentored, Mobilized, Directed |
+| "analyzed" | Benchmarked, Synthesized, Validated, Evaluated, Assessed |
+
+---
+
+## 📈 Quantification Templates
+
+**Revenue & Financial:**
+- "Increased quarterly sales by X% within Y months"
+- "Delivered projects X% under budget"
+- "Generated $X in additional revenue"
+
+**Efficiency & Process:**
+- "Reduced X from Y to Z (X% improvement)"
+- "Implemented automation saving X hours/week"
+- "Streamlined process, reducing time from X to Y"
+
+**Team & Scope:**
+- "Managed team of X across Y time zones"
+- "Mentored X professionals; Y earned promotions"
+- "Grew portfolio from X to Y clients"
+
+**Quality & Customer:**
+- "Achieved X% customer satisfaction (up from Y%)"
+- "Reduced churn by X%"
+- "Maintained X% uptime (benchmark: Y%)"
+
+**Project Delivery:**
+- "Delivered X projects totaling $Y budget, Z% on-time"
+- "Led migration impacting X users with zero data loss"
+- "Achieved X% of revenue targets"
+
+---
+
+## ✅ ATS Checklist
+
+**Formatting (Critical):**
+- [ ] PDF or .docx format
+- [ ] Standard fonts (Arial, Calibri, Inter)
+- [ ] 10-11pt body, 14-18pt name
+- [ ] 0.8-1 inch margins
+- [ ] Left alignment only
+- [ ] No graphics, icons, tables, columns
+- [ ] No headers/footers
+- [ ] No special characters (& → "and")
+
+**Content:**
+- [ ] 15-20 keywords from job description
+- [ ] Both full term and acronym: "Search Engine Optimization (SEO)"
+- [ ] Standard section headings
+- [ ] Consistent date format (MM/YYYY)
+- [ ] Bullet points, not paragraphs
+- [ ] LinkedIn URL included
+
+**Quality:**
+- [ ] Test with ATS checker before submitting
+
+---
+
+## 🚫 What to Avoid
+
+**Clichés (Never Use):**
+- "Results-driven professional"
+- "Team player"
+- "Think outside the box"
+- "Hard-working"
+- "Detail-oriented"
+- "Self-starter"
+- "Go-getter"
+- "Passionate about..."
+
+**Outdated Practices:**
+
+| ❌ Don't | ✅ Do Instead |
+|----------|---------------|
+| Objective statement | Professional Summary |
+| "Responsible for..." | Achievement with metric |
+| Generic skills list | Skills with context |
+| Duties without results | Quantified achievements |
+| Multiple colors/fonts | One accent color max |
+| Photos/graphics | Text only |
+| 3+ pages | 2 pages max |
+
+**Bad vs Good Examples:**
+
+❌ Bad:
+```
+"Responsible for managing marketing campaigns"
+```
+
+✅ Good:
+```
+"Increased campaign ROI by 35% through data-driven audience targeting"
+```
+
+---
+
+## 📏 Length Guidelines
+
+| Career Stage | Length |
+|--------------|--------|
+| 0-2 years | 1 page |
+| 2-5 years | 1-1.5 pages |
+| 5-10 years | 1.5-2 pages |
+| 10+ years | 2 pages max |
+
+---
+
+## 🎨 Formatting Quick Reference
+
+**Fonts:** Arial, Calibri, Inter, Roboto, Open Sans  
+**Body Size:** 10-11pt  
+**Name Size:** 14-18pt  
+**Margins:** 0.8-1 inch  
+**Line Spacing:** 1.0-1.15  
+**Accent Colors:** Navy blue, dark green, burgundy, teal (one only)
+
+---
+
+_Source: docs/research/resume-research-2025.md_