- Renamed line and block patch op verbs to XCHG, DEL, and INS in parsing and formatting.
- Updated grammar and tokenizer to support XCHG.BLK, DEL.BLK, and INS.PRE/POST/HEAD/TAIL forms.
- Updated diagnostics, docs, prompts, tests, and changelog to use XCHG/DEL/INS-based operators.
- Expanded session-stats parsing to normalize legacy op aliases to compact IDs.
- Added standalone Bun script reading session JSONL with real per-request usage.
- Scanned main-vs-subagent split, residency, repeated reads, and edit churn.
- Classified costliest sessions via pi-ai for hygiene, spawn, and waste verdicts.
- Added stats:audit script, prompt, and scanFile unit tests.
- Added a new `--since` CLI window option and applied a timestamp cutoff to tools, edits, and followups queries, including session-count updates.
- Updated edit analytics to treat `is_error` as authoritative, added hashline op parsing from edit input, and expanded failure classification patterns for hashline error cases.
- Enhanced parser to accept both new ¶PATH and legacy §PATH section headers in edit input.
- Added dedicated new-format regex handlers for insert, replace, and delete ops while retaining legacy anchor parsing semantics.
- Bumped EDIT_PARSER_VERSION to 5 so downstream syncs refresh rows for the parser change.
- Changed hashline format to canonical `§` section headers and `"`/`"`/`≔` operations across grammar, parser, and docs.
- Reworked range and op parsing so single anchors are valid, legacy `-`/`-=` ops error, and empty `≔` payloads now delete ranges.
- Removed legacy `HL_EDIT_SEP`, `$HSEP$`, and `hsep` plumbing, adopting raw payload lines.
- Updated execution, input, renderer, and streaming flows to use `HL_FILE_PREFIX` and `HL_OP_CHARS` helpers.
- Updated session-stats parsing to `§`/`≔`/`"`/`"` format, patch envelopes, and bumped parser versions.
- Removed the hashline-separator benchmark script and its PI_HL_SEP job orchestration.
- 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.
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