Bug fixes:
- agent/redact.py: catastrophic regex backtracking in _ENV_ASSIGN_RE — removed
re.IGNORECASE and changed [A-Z_]* to [A-Z0-9_]* to restrict matching to actual
env var name chars. Without this, the pattern backtracks exponentially on large
strings (e.g. 100K tool output), causing test_file_read_guards to time out.
- tools/file_operations.py: over-escaped newline in find -printf format string
produced literal backslash-n instead of a real newline, breaking file search
result parsing (total_count always 1, paths concatenated).
Test fixes:
- Remove stale pytestmark.skip from 4 test modules that were blanket-skipped as
'Hangs in non-interactive environments' but actually run fine:
- test_413_compression.py (12 tests, 25s)
- test_file_tools_live.py (71 tests, 24s)
- test_code_execution.py (61 tests, 99s)
- test_agent_loop_tool_calling.py (has proper OPENROUTER_API_KEY skip already)
- test_413_compression.py: fix threshold values in 2 preflight compression tests
where context_length was too small for the compressed output to fit in one pass.
- test_mcp_probe.py: add missing _MCP_AVAILABLE mock so tests work without MCP SDK.
- test_mcp_tool_issue_948.py: inject MCP symbols (StdioServerParameters etc.) when
SDK is not installed so patch() targets exist.
- test_approve_deny_commands.py: replace time.sleep(0.3) with deterministic polling
of _gateway_queues — fixes race condition where resolve fires before threads
register their approval entries, causing the test to hang indefinitely.
Net effect: +256 tests recovered from skip, 8 real failures fixed.
Salvaged from PR #977 onto current main.
Preserves the MCP stdio command resolution and improved error diagnostics,
with deterministic regression tests for the npx/node PATH cases.
Co-authored-by: kshitij <82637225+kshitijk4poor@users.noreply.github.com>
