refactor: reorganize examples directory with topic-based subdirectories

Reorganize examples directory into logical topic-based subdirectories with
comprehensive documentation:

- templates/: ISO/ARC42 documentation templates
- asset-management/: Asset management prototypes and demos
- essays/: Long-form content examples
- invoicing/: Invoice generation examples
- plugins/: Plugin development examples
- issue-demos/: Issue prevention demonstrations
- design-patterns/: Design pattern examples

Each subdirectory includes a README.txt file with topic description and
contributor signatures based on file creation timestamps.

🤖 Generated with [Claude Code](https://claude.ai/code)

Co-Authored-By: Claude <noreply@anthropic.com>

examples/asset-management/README.txt

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+Asset Management Examples
+
+This directory contains prototype implementations and demonstrations for asset management
+concepts developed for Issue #141:
+
+- asset_management_concept_a.py: Hash-based content-addressable storage approach
+- asset_management_concept_b.py: Alternative asset management implementation
+- demo_hash_store/: Working demonstration of hash-based asset storage with metadata
+- demo_workspace/: Example workspace showing asset management in practice
+
+These examples showcase different approaches to asset deduplication, storage, and
+management within the MarkiTect ecosystem.
+
+--worsch, 25-10-08

examples/design-patterns/README.txt

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+Design Pattern Examples
+
+This directory contains examples of software design patterns and architectural concepts:
+
+- design_pattern.md: Documentation and examples of common design patterns used
+  in software development, with practical implementations and use cases
+
+These examples provide educational material for understanding and implementing
+design patterns in real-world projects.
+
+--worsch, 25-10-03

examples/essays/README.txt

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+Essays and Long-form Content
+
+This directory contains essay examples and long-form content demonstrations:
+
+- BildungsKanonJon.md: "200 Jahre Bildung" - A philosophical essay exploring 200 years
+  of education from the perspective of world spirit to self-consciousness
+- BildungsKanonJon.html: Rendered HTML version of the essay
+
+These examples demonstrate MarkiTect's capability to handle complex, narrative content
+with rich formatting and philosophical depth.
+
+--worsch, 25-10-08

examples/invoicing/README.txt

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+Invoicing System Examples
+
+This directory contains examples for invoice generation and template systems:
+
+- invoice_template.md: Markdown template for invoice generation
+- invoice_data.json: Sample invoice data in JSON format for template population
+
+These examples demonstrate how MarkiTect can be used for business document generation
+with data-driven template systems.
+
+--worsch, 25-10-03

examples/issue-demos/README.txt

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+Issue Prevention Demonstrations
+
+This directory contains examples demonstrating issue prevention and resolution:
+
+- issue_59_prevention_demo.py: Demonstration script for preventing issues related
+  to Issue #59, showing best practices and defensive programming techniques
+
+These examples serve as educational material for avoiding common pitfalls and
+implementing robust solutions.
+
+--worsch, 25-10-03

examples/plugins/README.txt

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+Plugin Development Examples
+
+This directory contains example plugin implementations for MarkiTect:
+
+- example_processor.py: Example of a content processor plugin
+- example_formatter.py: Example of a content formatter plugin
+
+These examples show how to extend MarkiTect's functionality through the plugin
+architecture, providing templates for custom processing and formatting plugins.
+
+--worsch, 25-10-03

examples/templates/README.txt

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+Templates Collection
+
+This directory contains various document templates for different standards and frameworks:
+
+- TEMPLATE-ARC42.md: Software architecture documentation template following the arc42 standard
+- TEMPLATE-ISO14001.md: Environmental management system template based on ISO 14001
+- TEMPLATE-ISO27001-ISMS.md: Information security management system template for ISO 27001
+- TEMPLATE-ISO9001.md: Quality management system template following ISO 9001
+
+These templates provide structured starting points for creating compliant documentation
+in their respective domains.
+
+--worsch, 25-10-03