- Replaced `===== ... =====` eval cell headers with `*** Begin ` / `*** End ` markers; legacy format remains renderable in HTML exports.
- Replaced hashline patch grammar with `*** Begin Patch` / `*** End Patch` envelope; old inputs without the envelope are still accepted.
- Extracted `sniffEvalLanguage` into a shared `sniff.ts` module reused by the parser and tool.
- Added `docs/ERRATA-GPT5-HARMONY.md` and `scripts/session-stats/harmony_backtest.py` documenting and backtesting the GPT-5 Harmony-header leak defect.
- Added a Python `analyze.py` CLI with `tools`, `edits`, and `followups` session-stats subcommands.
- Added `sync.py` ingestion with `~/.omp/stats.db`, migration SQL, and incremental JSONL resume logic.
- Replaced `stats:run` in `package.json` with `stats:sync` and new `stats:edits`, `stats:tools`, and `stats:followups` scripts.
- Removed the Rust session-stats crate files (`Cargo.toml`, `main.rs`, `common.rs`, `cmd_*.rs`) and their old command logic.
- Removed `.gitignore` ignores for `scripts/session-stats/Cargo.lock` and `scripts/session-stats/edit-analysis.csv`.
- Updated eval tool guidance to show Python `asyncio.run(...)` usage.
- Added a `followups` CLI command in `scripts/session-stats` for hashline edit follow-up analysis.
- Added `--max-fix`, `--max-gap`, `--min-dup`, `--pattern`, and `--show` options in `cmd_followups.rs`.
- Added follow-up heuristics for small fixes, tool self-corrections, overlapping re-edits, and payload/anchor duplications.
- Updated Rust dependency manifests in `pi-natives` and `session-stats` to newer versions of rayon, tiktoken-rs, tree-sitter grammars, and supporting crates.
- Synchronized `Cargo.lock` with the manifest updates, including package bumps for fancy-regex, serde_spanned, toml components, and winnow.
- Refreshed `package.json` and `bun.lock` catalog and lock entries for newer Bun, AWS SDK, AI, and tooling package versions.
- Added timestamp and model fields to message and tool-call structs with serde defaults.
- Added timestamp parsing and bucket-format helpers, including clamped percentile calculation.
- Added rolling-window call grouping and CSV export via new `--by`, `--top`, `--tool`, and `--calls-csv` options.
- Added `TOOL_CALLS_CSV` env fallback and help text updates describing new bucketed percentile output.
- Lowered the default session scan limit for edits and tools from 100000 to 1000 and updated usage text to match.
- Reworked grand-total and per-tool table rendering in session-stats to compute aligned column widths and include an aggregated "(N others)" row.
- Tuned the session-stats release profile by replacing full stripping with line-tables-only debug symbols and disabled split debuginfo stripping.
can1357