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@emcd emcd commented Nov 13, 2025

Document the system architecture retroactively based on codebase analysis:

  • System Overview: Describe four-layer pipeline architecture (introspection, assembly, rendering, configuration), data flow, design patterns, and quality attributes
  • Filesystem Organization: Detail module structure, responsibilities, layered dependencies, and public API surface

Architecture highlights:

  • Protocol-based extensibility for rendering and visibility decisions
  • Annotation reduction with cycle detection and caching
  • Immutable configuration objects for thread-safety
  • Fragment composition from multiple sources
  • Recursive decoration with visit tracking

Document the system architecture retroactively based on codebase analysis:

- System Overview: Describe four-layer pipeline architecture (introspection,
  assembly, rendering, configuration), data flow, design patterns, and quality
  attributes
- Filesystem Organization: Detail module structure, responsibilities, layered
  dependencies, and public API surface

Architecture highlights:
* Protocol-based extensibility for rendering and visibility decisions
* Annotation reduction with cycle detection and caching
* Immutable configuration objects for thread-safety
* Fragment composition from multiple sources
* Recursive decoration with visit tracking
Document product requirements retroactively based on codebase analysis:

- Executive Summary: Library bridges rich annotations and documentation tools
- Problem Statement: Sphinx Autodoc cannot process PEP 727 Doc objects and
  annotation metadata
- Goals and Objectives: 7 measurable objectives from critical Doc extraction
  to fragment table support
- Target Users: Library maintainers, API developers, type annotation adopters
- Functional Requirements: 12 user stories covering decoration, annotation
  processing, customization, and configuration
- Non-Functional Requirements: Performance, correctness, compatibility,
  usability, and extensibility metrics
- Constraints and Assumptions: Technical, design, and behavioral constraints
- Out of Scope: Explicit exclusions to manage expectations

All requirements include acceptance criteria and priority levels
(Critical/High/Medium/Low) following requirements.rst guidelines.
Changes:
- Add note that PEP 727 is withdrawn but Doc remains in typing_extensions
- Remove user personas and user stories section (too enterprisey)
- Rewrite functional requirements in direct voice instead of "As a..." format
- Change Python baseline from 3.11+ to 3.10+
- Remove typing_extensions dependency removal requirement
- Update references to PEP 727 to mention it's withdrawn

The PRD now focuses on what the product is and does rather than user
narratives, while preserving detailed requirements with acceptance criteria.
Add blank lines after 'Acceptance Criteria:' headers and keep long list
items on single lines to avoid reStructuredText indentation parsing issues.
@emcd emcd merged commit c77c7ec into master Nov 13, 2025
22 checks passed
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2 participants