Module interfaces 

Trait interfaces for ToolRegistry subsystems.

Each trait isolates a single responsibility from the monolithic ToolRegistry, enabling independent testing and substitutability. Implementors can be swapped for test doubles without constructing the full 35-field registry.

Design Principles

• One trait per concern: security, PTY, MCP, resilience, catalog, metrics.
• Async where needed: methods that touch I/O or locks are async.
• Send + Sync bounds: all traits require thread-safety for Arc<dyn Trait> usage.
• Return owned types: avoid lifetime entanglement with the implementor.

Traits

McpBridge

Model Context Protocol (MCP) tool bridge.

PtySessionControl

PTY (pseudo-terminal) session lifecycle management.

ToolCatalog

Tool catalog: registration, lookup, and schema access.

ToolMetrics

Tool execution metrics and history tracking.

ToolRegistryApi

Full tool registry API: the union of all subsystem traits.

ToolResilience

Execution resilience: circuit breakers, adaptive timeouts, failure tracking.

ToolSecurity

Security and policy enforcement for tool execution.

Type Aliases

SharedRegistry

Type alias for a shared, dynamically-dispatched tool registry.