Coverage for little_loops / hooks / post_tool_use.py: 100%

1"""PostToolUse hook handler: no-op baseline for fire-and-forget observability. 

2 

3Per FEAT-1489, this handler is wired as the post-tool-use intent on Codex and 

4OpenCode so future consumers (audit logging, token budgeting, rate-limit 

5enforcement) have a stable registration point. Today it returns a passing 

6result with no side effects — the no-op baseline matches ``session_start``'s 

7``exit_code=0`` convention rather than ``pre_compact``'s ``exit_code=2`` 

8block-and-inject pattern. 

9 

10Fire-and-forget semantics are achieved through handler speed (<200ms p95 

11no-op) on the Codex blocking-shim adapter (≤5s timeout) and through the 

12no-await invocation pattern on the OpenCode adapter. The handler itself 

13does not background or spawn anything. 

14""" 

15 

16from __future__ import annotations 

17 

18from little_loops.hooks.types import LLHookEvent, LLHookResult 

19 

20 

21def handle(event: LLHookEvent) -> LLHookResult: 

22 """Return a passing result. No-op baseline for future consumers.""" 

23 del event 

24 return LLHookResult(exit_code=0)