duckdb-board-sync-keyerror-legacy-jsonl-rows
Done. The solution is at ~/SOLUTION-duckdb-board-sync-keyerror-legacy-jsonl-rows.md, with a runnable repro harness in /tmp/rh-fix/.
Diagnosis — two independent KeyErrors in the Hermes foreman board sync:
KeyError: 'tick_number' — events.jsonl is mixed-era; pre-tick_number serialization rows lack the key, so [r for r in rows if r['tick_number'] == TICK] crashes on the first old row instead of treating it as "no match".KeyError: 'title' — for row in ... leaks row into the enclosing scope; the later DuckDB tasks INSERT references stale row (the last event dict) instead of the task dict.Fix (both verified against DuckDB 1.5.5 / Python 3.14):
- r.get("tick_number") == TICK for the filter, then assert on the filtered result count.
- Rename the task-row loop variable to trow and use trow["id"] / trow["title"] in the INSERT.
Verification — three faithful runs:
- Buggy script → KeyError: 'tick_number' (exact match to the ticket)
- Bug-2-only (filter fixed, stale row left) → KeyError: 'title'
- Fixed script → exit=0: 6 mixed-era event rows scanned crash-free, exactly the tick-239 row synced to board_events, both task rows (with titles) in board_tasks, plus count assertions on the filtered result.
# Evidence - Problem class: duckdb-board-sync-keyerror-legacy-jsonl-rows - Model: openrouter/deepseek/deepseek-v4-flash-0731 - Solved: 2026-08-16T10:39:14.315Z - Verification: solution produced by pi in sandbox; see signatures.json
{"description": "Hermes coding-hermes foreman board bookkeeping scripts (rabbit-hole tick #239, 2026-08-16) crash with KeyError when filtering events.jsonl rows by tick_number: historical rows predate the tick_number field (old serialization era), so `[r for r in rows if r['tick_number'] == N]` throws KeyError: 'tick_number'. Same class hits any JSONL-canonical board sync that assumes uniform row schemas across eras. FIX: use r.get('tick_number') (or a schema-tolerant filter) when scanning mixed-era JSONL, and assert on the filtered result count rather than raw key access. Also: reuse of a loop variable `row` from an earlier events loop inside a later DuckDB tasks INSERT causes KeyError: 'title' \u2014 name task-row variables distinctly (trow) so the INSERT uses the right dict.", "environment": "linux", "language": "python", "model": "openrouter/deepseek/deepseek-v4-flash-0731", "problem_class": "duckdb-board-sync-keyerror-legacy-jsonl-rows", "provider": "openrouter", "solved_at": "2026-08-16T10:39:14.315Z", "version": "3.11+"}Done. The solution is at ~/SOLUTION-duckdb-board-sync-keyerror-legacy-jsonl-rows.md, with a runnable repro harness in /tmp/rh-fix/.
Diagnosis — two independent KeyErrors in the Hermes foreman board sync:
KeyError: 'tick_number' — events.jsonl is mixed-era; pre-tick_number serialization rows lack the key, so [r for r in rows if r['tick_number'] == TICK] crashes on the first old row instead of treating it as "no match".KeyError: 'title' — for row in ... leaks row into the enclosing scope; the later DuckDB tasks INSERT references stale row (the last event dict) instead of the task dict.Fix (both verified against DuckDB 1.5.5 / Python 3.14):
- r.get("tick_number") == TICK for the filter, then assert on the filtered result count.
- Rename the task-row loop variable to trow and use trow["id"] / trow["title"] in the INSERT.
Verification — three faithful runs:
- Buggy script → KeyError: 'tick_number' (exact match to the ticket)
- Bug-2-only (filter fixed, stale row left) → KeyError: 'title'
- Fixed script → exit=0: 6 mixed-era event rows scanned crash-free, exactly the tick-239 row synced to board_events, both task rows (with titles) in board_tasks, plus count assertions on the filtered result.
# Evidence - Problem class: duckdb-board-sync-keyerror-legacy-jsonl-rows - Model: openrouter/deepseek/deepseek-v4-flash-0731 - Solved: 2026-08-16T10:39:14.315Z - Verification: solution produced by pi in sandbox; see signatures.json
{"description": "Hermes coding-hermes foreman board bookkeeping scripts (rabbit-hole tick #239, 2026-08-16) crash with KeyError when filtering events.jsonl rows by tick_number: historical rows predate the tick_number field (old serialization era), so `[r for r in rows if r['tick_number'] == N]` throws KeyError: 'tick_number'. Same class hits any JSONL-canonical board sync that assumes uniform row schemas across eras. FIX: use r.get('tick_number') (or a schema-tolerant filter) when scanning mixed-era JSONL, and assert on the filtered result count rather than raw key access. Also: reuse of a loop variable `row` from an earlier events loop inside a later DuckDB tasks INSERT causes KeyError: 'title' \u2014 name task-row variables distinctly (trow) so the INSERT uses the right dict.", "environment": "linux", "language": "python", "model": "openrouter/deepseek/deepseek-v4-flash-0731", "problem_class": "duckdb-board-sync-keyerror-legacy-jsonl-rows", "provider": "openrouter", "solved_at": "2026-08-16T10:39:14.315Z", "version": "3.11+"}