docs: comprehensive API documentation improvements across Swarm frame…

[christopherkarani]

…work

Core Documentation Improvements:

• Agent.swift: Full DocC documentation for all public properties and V3 modifier methods
• AgentConfiguration.swift: Complete builder pattern documentation (19 methods)
• AgentError.swift: All 20 error cases documented with recovery suggestions
• Conversation.swift: Actor, Message, Role, and all methods documented
• Workflow.swift: 100% coverage for struct and 9 methods + MergeStrategy enum
• SwarmTranscript.swift: 4 public methods documented (validateReplayCompatibility, stableData, transcriptHash, firstDiff)
• ResponseTracker.swift: Session management methods documented
• RunHooks.swift: All 9 LoggingObserver methods documented

Tool System Documentation:

• Tool.swift: Consolidated 4 files into 1, full coverage for AnyJSONTool/Tool/ToolParameter/ToolSchema/FunctionTool/ToolRegistry
• BuiltInTools.swift: CalculatorTool, DateTimeTool, StringTool execute() methods documented
• ToolBridging.swift: AnyJSONToolAdapter init() and execute() documented
• ZoniSearchTool/WebSearchTool/SemanticCompactorTool: execute() methods documented

Memory System Documentation:

• AgentMemory.swift: All memory factory methods and protocol documented
• MemoryMessage.swift: Complete message type documentation
• EmbeddingProvider.swift: Full provider protocol documentation

Guardrails Documentation:

• Guardrail.swift, InputGuardrail.swift, OutputGuardrail.swift, GuardrailResult.swift: Complete

Build Verification:

• All changes compile successfully with 'swift build'
• No breaking changes to public API

Documentation Consolidation:

• Merged TypedToolProtocol.swift, ToolSchema.swift, FunctionTool.swift into Tool.swift
• Reduced file count while maintaining full API compatibility

Pull Request

Thank you for contributing to Swarm! 🎉

We appreciate your effort to improve the framework. This template helps ensure high-quality contributions that align with the project's standards.

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Description

What does this PR do?

Motivation and Context

Fixes # (issue)

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Type of Change

Please check the relevant option(s):

• 🐛 Bug fix (non-breaking change which fixes an issue)
• ✨ New feature (non-breaking change which adds functionality)
• 🔨 Refactoring (code improvement without functional changes)
• 📚 Documentation (updates to README, inline docs, or examples)
• ⚠️ Breaking change (fix or feature that would cause existing functionality to not work as expected)
• 🧪 Test improvement (adding missing tests or improving existing ones)
• 🔧 Build/CI (changes to build process, dependencies, or CI configuration)

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Changes Made

Implementation Details

Files Changed

• path/to/file.swift - Description of changes
• path/to/another/file.swift - Description of changes

API Changes (if applicable)

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Testing

Test Coverage

• I have followed Test-Driven Development (TDD) practices (wrote tests first, then implementation)
• All new code is covered by unit tests
• I have added tests for edge cases and error conditions
• I have used mock protocols for external dependencies (LLM providers, network, etc.)

Test Results

# Paste the output of: swift test

Manual Testing

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Breaking Changes

Does this PR introduce breaking changes?

• Yes (please describe below)
• No

Breaking Change Details

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Pre-Submission Checklist

Code Quality

• My code follows the Swift 6.2 standards and project conventions
• I have performed a self-review of my own code
• I have run swift build and ensured no compilation errors
• I have run swift test and all tests pass
• I have run SwiftFormat: swift package plugin --allow-writing-to-package-directory swiftformat
• I have run SwiftLint and fixed any warnings: swiftlint lint

Concurrency & Safety

• All public types conform to Sendable where appropriate
• I have used async/await and structured concurrency correctly
• I have properly applied @MainActor, actor, or nonisolated annotations
• My code is free from data races and concurrency issues

Documentation

• I have added/updated documentation comments for public APIs
• I have updated the README.md if needed
• I have added examples to Sources/Swarm/Examples/ if introducing new features
• My code does not use print() statements (uses swift-log instead)

Testing (TDD Required)

• I wrote tests before writing the implementation (Red phase)
• I wrote minimal code to make tests pass (Green phase)
• I refactored while keeping tests green (Refactor phase)
• Mock protocols are used for external dependencies

Version Compatibility

• My code supports the minimum requirements: iOS 17+, macOS 14+, Swift 6.2
• I have not introduced dependencies that break compatibility

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Additional Context

Screenshots (if applicable)

Related Issues/PRs

• Related to #
• Depends on #
• Blocks #

Questions or Concerns

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Reviewer Checklist (for maintainers)

• Code follows project architecture and patterns
• Tests are comprehensive and follow TDD principles
• Documentation is clear and complete
• No security vulnerabilities introduced (SQL injection, XSS, command injection, etc.)
• Performance implications are acceptable
• Breaking changes are properly documented
• CI/CD checks pass

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Thank you again for your contribution! Your efforts help make Swarm better for the entire Swift community. If you have any questions, feel free to ask in the comments below.

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