python-domain-exception-policylisted

# Outcome Produce a concrete, reviewable result for the workflow below without overstating what was observed, executed, or verified. ## Compatibility Portable across Claude Code, Codex, and OpenCode. The optional auditor requires Python 3.11, performs static AST analysis without importing code, and uses no network. Confirm framework cancellation and exception-group semantics for the target runtime. ## Use this skill when - A library or application needs a deliberate public exception hierarchy. - Broad catches, silent failures, duplicate logging, or lost tracebacks need review. - Lower-level dependency errors need translation into domain contracts. - Cleanup, warnings, deprecations, cancellation, or retry behavior is unclear. - Internal exception taxonomy or translation boundaries must also map to CLI messages, streams, and exit statuses; also use `python-cli-error-output`. ## Do not use this skill when - The outcome is exclusively user-facing CLI messages, stdout/stderr, debug mode, and exit status without internal exception-taxonomy or translation work; use `python-cli-error-output`. - The outcome is an HTTP, RPC, or message-protocol error schema. - The task is merely to add one test without changing the error contract. ## Inputs Inspect or obtain: - Public callers and the actions they can take for each failure. - Current exception classes, catch blocks, logging calls, context managers, and retries. - Process, task, request, transaction, and external-dependency