Bump version to 0.8.1, eliminate OpenAI/Ollama wire types by using co…

…re types directly for serialization

- Bump workspace version from 0.8.0 to 0.8.1
- Remove all OpenAI wire types (OpenAIChatRequest, OpenAIMessage, OpenAIContent, OpenAIContentPart, OpenAIImageUrl, OpenAIInputAudio, OpenAITool, OpenAIFunction, OpenAIToolCall, OpenAIFunctionCall, OpenAIResponseFormat)
- Remove OpenAI conversion methods (convert_message, convert_tool, convert_tool_choice)
- Replace OpenAI::build_body() with build

Bump version to 0.8.0, refactor hooks module, simplify ChatRequest AP…

…I, and consolidate error exports

- Bump workspace version from 0.7.3 to 0.8.0
- Rename `callback` module to `hooks` and update all imports
- Move `RunContext` from `callback::context` to `hooks::context`
- Merge `NoopHooks` into `hooks/mod.rs` as a simple zero-sized type
- Remove empty `agent/hook.rs` module
- Remove `ChatProviderExt` trait, move methods into `ChatProvider` trait directly
- Consolidate `max_tokens` and `max_completion_tokens` into

Bump version to 0.7.3 and remove X402HttpClient example from document…

…ation

Bump version to 0.7.2 in workspace and dependency paths

Bump version to 0.7.1, add sub-agent usage tracking to ToolCallRecord…

…, remove machi-bot/machi-wasm from publish workflow, and add tracing to multi-agent example

- Bump workspace version from 0.7.0 to 0.7.1 in Cargo.toml
- Remove machi-bot and machi-wasm from rust-publish.yml package list
- Add sub_usage field to ToolCallRecord struct to track token consumption from managed sub-agent runs
- Add RunState::accumulate_tool_usage() method to sum sub-agent usage into cumulative totals
- Change dispatch

Refactor agent runner module to simplify documentation, consolidate i…

…mports, and streamline RunState initialization and step processing logic

- Simplify module-level documentation: reduce architecture explanation, remove redundant sections
- Consolidate imports: merge std imports, group futures imports, reorganize use statements by moving super imports before crate imports
- Rename StepOutcome documentation: change "The LLM produced" to "Final answer produced", "Tool calls were executed" to "Tool calls executed"

Refactor test code with clippy lint fixes: add missing lint suppressi…

…ons, simplify clones, improve string formatting, and use let-chains

- Add clippy::panic suppression to ollama/chat.rs test module
- Add clippy::match_same_arms to ollama/stream.rs test suppressions
- Add clippy::cast_possible_truncation and clippy::float_cmp to openai test modules
- Remove unnecessary clone() calls in ollama tests: use move semantics directly for options and tool structs
- Replace empty string literals with String::new() for

Upgrade version to 0.5.1

- Update workspace.package version from 0.5.0 to 0.5.1
- Synchronize machi and machi-derive dependency versions to 0.5.1

Add WebAssembly support with feature flags and conditional compilatio…

…n, upgrade version to 0.5.0

- Add native and wasm feature flags to machi/Cargo.toml: native (default) enables tokio/full for native platforms, wasm enables getrandom/wasm_js, chrono/wasmbind, and uuid/js for WebAssembly
- Configure workspace dependencies for WASM compatibility: disable default features for chrono and tokio, add explicit feature selections
- Add getrandom dependency as optional workspace dependency for WASM random

Introduce feature flags for optional dependencies and reorganize Fina…

…lAnswerTool as core tool, upgrade version to 0.4.7

- Add feature flags to machi/Cargo.toml: default features include mcp, toolkit, and derive; make machi-derive, scraper, and rmcp optional dependencies
- Move FinalAnswerTool and FinalAnswerArgs from tools/final_answer.rs to tool.rs module as core tool types
- Update imports across agent/builder.rs, agent/streaming.rs, and agent/tool_processor.rs to reference FinalAnswerTool from