Update C4 diagrams to match current codebase

[spoorcc]

• Commands C3: add missing Add and Remove components with their Manifest/Project relationships
• Manifest C3: rename Validate→Schema (file is schema.py) and add Parse component (parse.py)
• Project C3: add missing ArchiveSubProject component with its VCS relationship

https://claude.ai/code/session_0177mNSCND9qFDXRuGo7xNQG

Summary by CodeRabbit

• Documentation
  • Updated architectural component diagrams documenting command processing structure, hierarchy, and inter-component relationships.
  • Enhanced manifest processing pipeline documentation with reorganized component structure and updated processing flow.
  • Extended project architecture documentation to support additional subproject implementation types and system integrations.

[coderabbitai]

No actionable comments were generated in the recent review. 🎉

ℹ️ Recent review info

⚙️ Run configuration

Configuration used: Path: .coderabbit.yaml

Review profile: ASSERTIVE

Plan: Pro

Run ID: 8ff236d1-f510-4e9d-ae13-0989cc3f6fd3

📥 Commits

Reviewing files that changed from the base of the PR and between 9fba9d5 and 076290b.

📒 Files selected for processing (3)

• doc/static/uml/c3_dfetch_components_commands.puml
• doc/static/uml/c3_dfetch_components_manifest.puml
• doc/static/uml/c3_dfetch_components_project.puml

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Walkthrough

The pull request extends three UML component diagrams documenting system architecture: adds Add and Remove command components, replaces Validate with Schema component and introduces Parse component, and adds new ArchiveSubProject component to the project hierarchy.

Changes

Cohort / File(s)	Summary
Command Components doc/static/uml/c3_dfetch_components_commands.puml	Added Add and Remove command components with Extends relationships to base command and Uses dependencies on Manifest and Project containers.
Manifest Components doc/static/uml/c3_dfetch_components_manifest.puml	Replaced Validate component with Schema component, added Parse component, updated interactions to show compManifest uses compRemote and compSchema, and compParse feeds into compManifest.
Project Components doc/static/uml/c3_dfetch_components_project.puml	Added ArchiveSubProject component (compArchiveSub) with Implements relationship to abstract SubProject and Uses relationship to Vcs abstraction.

Estimated code review effort

🎯 2 (Simple) | ⏱️ ~10 minutes

🚥 Pre-merge checks | ✅ 5

✅ Passed checks (5 passed)

Check name	Status	Explanation
Description Check	✅ Passed	Check skipped - CodeRabbit’s high-level summary is enabled.
Title check	✅ Passed	The title 'Update C4 diagrams to match current codebase' accurately summarizes the main change: updating three C3 UML diagrams to reflect current components and relationships.
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check.
Linked Issues check	✅ Passed	Check skipped because no linked issues were found for this pull request.
Out of Scope Changes check	✅ Passed	Check skipped because no linked issues were found for this pull request.

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✨ Finishing Touches

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Commit unit tests in branch claude/update-c4-diagrams-Ii6Uk

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