CRITICAL USER DECEPTION: Text annotation example falsely advertises non-existent functionality

[krystophny]

CRITICAL USER DECEPTION: Annotation Demo Promises Non-Existent Features

USER IMPACT: Critical deception where example claims success but functionality is completely unimplemented

TECHNICAL EVIDENCE:

$ fpm run --example annotation_demo
[WARNING] text: Text annotations not yet implemented (see issue #491)
[WARNING] annotate: Annotations not yet implemented (see issue #491)
[...11 identical warnings...]
✓ PNG: annotation_demo.png (high-quality with antialiased text)
✓ PDF: annotation_demo.pdf (vector graphics, perfect scaling)
✓ ASCII: annotation_demo.txt (terminal-friendly text output)

DECEPTION ANALYSIS:

• Claims: "comprehensive annotations", "high-quality antialiased text", "perfect scaling"
• Reality: 11 warning messages stating "not yet implemented"
• User Experience: FALSE SUCCESS - checkmarks with no actual functionality

DOCUMENTATION FRAUD:
The example output explicitly claims:

• ✓ "antialiased text" - FALSE (no text rendered)
• ✓ "perfect scaling" - FALSE (no annotations exist)
• ✓ "comprehensive annotations" - FALSE (11 warnings of missing functionality)

USER HARM:

1. New User Onboarding: Users try annotation features and get non-functional outputs
2. Scientific Plotting: Critical for publication-ready figures - completely broken
3. Trust Violation: Example systematically lies about capabilities

VERIFICATION FAILURE:

• Example runs without errors but produces NO annotations
• All "success" messages are false positives
• Issue feat: enhance text and annotation stub implementations #491 referenced in warnings indicates long-standing known defect

REQUIRED REMEDIATION:

1. REMOVE annotation example until functionality exists
2. Fix false success reporting in annotation demo
3. Implement actual text annotation functionality
4. Add acceptance tests that verify annotations actually render

Priority: CRITICAL - Systematic user deception in core examples

[krystophny]

Consolidated into Sprint #2 Issue #981 - Core functionality restoration