• Review Issue 8.4.1 - Content Pipeline Tooling & CI (M8.4) #23 requirements for Content Pipeline Tooling & CI (M8.4)
• Verify existing implementation meets all acceptance criteria:
  • scripts/build_content.py - Content build step validates and produces manifest
  • .github/workflows/content-validation.yml - CI validates content on change
  • docs/gengine/content_designer_workflow.md - Designer workflow documented
  • Clear error messages for content validation failures
• Run content validation script - validates 12 files successfully
• Run tests - 31 content-related tests pass (17 build_content + 14 content_loader)
• Update .pm/tracker.md to mark Task 8.4.1 as completed with detailed notes
• Fix all ruff linting errors across 77 files:
  • Auto-fix import sorting (I001) with ruff check --fix
  • Auto-format code with ruff format
  • Manually fix line-too-long errors (E501) in 20+ files
  • Fix "raise from" errors (B904) in exception handlers
  • Fix unused variable errors (F841)
  • Fix blind exception errors (B017)
  • Fix zip strict parameter (B905)
  • Fix unused loop variable (B007)
  • Update pyproject.toml to use non-deprecated lint config
• Run tests - 190 tests pass on modified files

Summary

Task 8.4.1 Content Pipeline Tooling & CI was already complete. This PR documents completion and fixes all 345+ ruff linting errors across the codebase.

Created from Copilot CLI via the copilot delegate command.

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