`tool_run_tests` in `server/src/http/mcp/shell_tools/script.rs` is fully
blocking server-side: it spawns the test child, polls every 1s server-side
until exit (or `TEST_TIMEOUT_SECS = 1200s`), and returns the full
{passed, exit_code, output} directly. There is NO async/started-status
return path.
But two places told agents the wrong story:
1. `tools_list/system_tools.rs` description claimed "Returns immediately
with status: started. Poll get_test_result..." — agents read tool
descriptions for protocol semantics, so they followed this and burned
turns polling get_test_result.
2. `agents.toml` had been correctly saying it blocks, but my last commit
(776aad38) "fixed" it the wrong way based on a misread of the code.
Now both say: run_tests blocks server-side, returns the full result, do
not poll get_test_result. get_test_result remains for external observers
(UI checking on a job another caller started).
Reverts the prompt change in 776aad38 with the correct text.
dave