Document logging boundary

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Summary

• update the complete AgentGuidelines subtree to exact release 0.0.32
• adopt the root runtime-observability contract
• document LexiconKit's deliberate no-event decision for its pure domain-value surface
• reserve the future 📖 logging identity without noisy initializer logs or vocabulary exposure

Validation

• AgentGuidelines/Scripts/swift_format.sh format-and-lint Package.swift Sources Tests
• swift test (4 tests)
• AgentGuidelines/Scripts/validate_consumer_setup.swift --consumer-root . --require-swift-format
• AgentGuidelines subtree tree matches exact 0.0.32 tag tree 6d690b96bcc8d4f969579027feec785c7d40f45b
• Markdown wrapping, dependency, AppLogger boundary, CI, and .gitignore audit
• git diff --check

Draft only; exact-head ChatGPT review pending. Do not merge before WortJagd hands-on acceptance.