Module spawn 

v1.0.75 (G22 solution): spawn subsystem abstraction with VersionAdapter trait for codex/claude/opencode executors. Spawn subsystem abstraction (v1.0.75 — G22 solution)

Provides VersionAdapter trait that detects the version of external CLI executors (claude code, codex CLI, opencode headless) and adapts flags, schema and error handling accordingly.

Modules

claude_adapter

Claude Code version adapter (v1.0.75 — G22)

codex_adapter

Codex CLI version adapter (v1.0.75 — G22)

compat_matrix

Executor compatibility matrix (v1.0.75 — G22)

env_whitelist

Env whitelist for LLM subprocess spawners (v1.0.83, ADR-0041).

error_propagator

Error propagator for subprocess invocations (v1.0.75 — G22 P16/P17)

executor_version

Executor version parsing (v1.0.75 — G22)

opencode_adapter

OpenCode headless version adapter (v1.0.75 — G22)

preflight

Pre-flight validation layer for LLM subprocess spawners (v1.0.87, ADR-0045).

Structs

ExecutorCapabilities

Detected capability of a given executor version.

ParsedOutput

Result of parsing a subprocess output stream.

VersionCache

In-memory cache of executor -> ExecutorVersion to avoid re-spawning --version on every command. Resettable via --executor-version-check.

Enums

CompatMode

Compatibility mode controlling how strict the adapter is with version drift.

Traits

VersionAdapter

Trait for adapting spawn invocations to a particular executor’s version.

Functions

apply_cwd_isolation

Apply CWD isolation to a subprocess command. Sets current_dir to an ephemeral directory without .mcp.json ancestors and CLAUDE_CONFIG_DIR to block user-level MCP inheritance.

apply_cwd_isolation_tokio

Tokio variant of apply_cwd_isolation for async subprocess commands.

base_command

Reusable tokio command builder for subprocess invocation.

global_version_cache

spawn_isolation_dir

GAP-SPAWN-001 (v1.0.91): isolation directory for LLM subprocesses. Prevents .mcp.json walk-up by anchoring CWD in a clean temp dir.