[Maximooch]

Malformed process requests currently reach field indexing or numeric operations and raise internal exceptions. Separately, a completed tool call with an empty string result is discarded from Codex replay, removing evidence of the completed action. This PR fixes those two log-driven defects.

Changes

• Validate process identifiers, commands, numeric bounds/types, stdin text, and stop modes before dispatch; return the existing structured error shape and launch no child for invalid inputs.
• Preserve empty completed tool results while continuing to reject missing content and orphaned replay items. Cover the historical 72-call/30-result shape with synthetic data rather than private transcripts.
• Load replay fixtures explicitly as UTF-8, replace Unix-only polling fixtures with native Python children, and run the targeted suite on Windows/Linux with Python 3.11/3.12.

Three commits separate input validation, replay preservation, and test portability/CI. No broader runtime redesign or historical-session migration is included.

Validation

• Original reproductions: 8 process-input cases and the empty-result replay case failed before fixes.
• Final focused run: 182 passed on native Windows, including expanded malformed-input cases, real process I/O/cleanup, polling, replay, context preservation, and existing OAuth adapter tests. No live model calls.
• Ruff checks on changed modern Python files and git diff --check pass.
• Broader exploratory run: 205 passed, 2 failed in existing test_process_permission_contract.py::test_new_policy_applies_to_each_operation cases (process_start/process_write_stdin). Both failures also reproduce with the original HEAD ProcessTools.execute method restored in memory; the fixture mocks the process service. They are disclosed, not weakened or skipped by this PR.
• Remote CI pending when opened; dedicated regression matrix added in this PR.

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Project	Deployment	Actions	Updated
penguin	Ready	Preview	Oct 28, 2026 10:42pm UTC

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