[Muhammad Abdullah Butt (1AbdullahButt)]

Fixes #386

_iter_jsonl (used by the Claude Code, Codex and Cursor harvesters) skipped lines that failed json.loads. Two other kinds of bad line still got past it and aborted the whole harvest:

• Cut mid-character. The file was decoded in text mode, outside the per-line try. A transcript that ends partway through a multi-byte character (for example, a session still being written) raised UnicodeDecodeError out of the generator, and nothing above it catches that.
• Valid JSON, but not an object. null, [], "text" and 42 were yielded, and digest_transcript / digest_codex_archived_session then raised AttributeError on rec.get(...).

The fix reads the file as bytes, decodes each line on its own, and yields only dicts. That is what the Copilot reader (_read_jsonl_snapshot) already does. A bad line is now skipped like any other malformed line, and the rest of the session is still harvested.

Tests

• New tests/test_harvest_malformed_lines.py covers a cut line and non-object lines for the Claude Code harvester, and both together for the Codex harvester. All 3 tests fail on main (UnicodeDecodeError / AttributeError) and pass with this change.
• python -m pytest -q: All 3 new tests fail on main and pass here. Full suite on Linux (python:3.11-slim): 2077 passed; the same 11 tests fail on unmodified main in that container (Devin installer, run-sleep fallback, reproducibility CLI: environment-dependent, unrelated). On Windows the harvest and sleep-engine tests pass apart from failures that also occur on main.
• No docs changed.

This change was written with Claude Code.

🤖 Generated with Claude Code

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