# Conversation a07671fe-d895-4c84-8b39-aaba92e31218

- Source: `claude`
- User: `pascal`
- System: `Pascals-MBP.local`
- Started: `2026-02-24T19:40:37.086Z`
- CWD: `/Users/pascal/Code/business/convx/history`

## User

_`2026-02-24T19:40:37.086Z`_

it would be great if you can add another feature. A "[SANITIZED]" search/replace for the whole line for a set of words that the user may define. E.g. I'd want any line that contains
- everycure
- Every Cure
- ... (some others maybe)

to be completely sanitized. to keep work content out of the history. 
and this should be configurable in a local config file. how would you build that

## Agent

_`2026-02-24T19:41:42.228Z`_

Let me read the key files to understand the exact code before implementing.

## Agent

_`2026-02-24T19:42:20.385Z`_

Good — Python 3.11+, so `tomllib` is in stdlib. Here's my plan:

**Config file:** `.convx/sanitize.toml` in the output repo (same dir as `index.json`). Auto-loaded on every sync — no CLI flags needed.

```toml
# Lines containing any of these terms will be replaced with [SANITIZED]
keywords = [
  "everycure",
  "Every Cure",
]
```

**Implementation:**
1. New `sanitize.py` — `load_sanitize_keywords(repo_path)` + `sanitize_lines(text, keywords)` (case-insensitive line matching)
2. `engine.py` — load keywords once in `sync_sessions()`, apply after every `redact_secrets()` call

Let me implement it.

## Agent

_`2026-02-24T19:42:30.941Z`_

Now update `engine.py` to import and apply it:

## Agent

_`2026-02-24T19:42:33.956Z`_

Now add `sanitize_keywords` loading in `sync_sessions` and apply it after every `redact_secrets` call:

## Agent

_`2026-02-24T19:42:38.621Z`_

Now apply `sanitize_lines` after every `redact_secrets` call. There are 4 call sites — the two inside the `child_sessions` branch and two in the flat branch:

## Agent

_`2026-02-24T19:42:48.696Z`_

Now write the tests:

## Agent

_`2026-02-24T19:43:08.207Z`_

All 13 tests pass. Let me also quickly verify the engine change looks correct:

## Agent

_`2026-02-24T19:43:19.654Z`_

Done. Here's what was added:

**New file: `src/convx_ai/sanitize.py`**
- `load_sanitize_keywords(repo_path)` — reads `.convx/sanitize.toml`, returns empty list if missing/invalid
- `sanitize_lines(text, keywords)` — replaces any line containing a keyword (case-insensitive) with `[SANITIZED]`

**Modified: `engine.py`**
- Loads keywords once per `sync_sessions()` call from the output repo's `.convx/sanitize.toml`
- Applies `sanitize_lines()` after `redact_secrets()` on every rendered file (markdown, JSON, child sessions)

**To use it**, create `.convx/sanitize.toml` in your history repo:

```toml
# Lines containing any of these terms will be replaced with [SANITIZED]
keywords = [
  "everycure",
  "Every Cure",
]
```

The file is picked up automatically on the next sync — no CLI flags needed. Matching is case-insensitive, so `"everycure"` covers `EveryCure`, `EVERYCURE`, etc. The entire line is replaced, so no partial leaks.

## User

_`2026-02-24T19:43:58.900Z`_

great is it gitignored? so every use can define their own

## Agent

_`2026-02-24T19:44:05.115Z`_

Yes — already covered. The `_ensure_convx_gitignore` function in `engine.py:229` writes this to `.convx/.gitignore` on every sync:

```
*
!.gitignore
```

That wildcard ignores everything in `.convx/` (including `sanitize.toml`) except `.gitignore` itself. So each user can drop their own `.convx/sanitize.toml` in the history repo and it will never be committed.

## User

_`2026-02-24T19:44:54.650Z`_

we also need an --overwrite flag so we can make sure we overwrite previously expored things with new exports, so we can clean previously unsanitised things

## Agent

_`2026-02-24T19:45:03.594Z`_

The fix is in the idempotency check in `engine.py` — when fingerprint matches and files exist, it skips. I need to add `force_overwrite` to bypass that, then wire up a CLI flag.

## Agent

_`2026-02-24T19:45:11.669Z`_

Now add `--overwrite` to both CLI commands:

## Agent

_`2026-02-24T19:45:25.168Z`_

Now do the same for the `backup` command:

## Agent

_`2026-02-24T19:45:39.491Z`_

Done. Usage:

```bash
convx sync --overwrite
convx backup --output-path ~/my-history --overwrite
```

With `--overwrite`, the fingerprint check is skipped for every session, so they all get re-exported and re-sanitized regardless of whether anything changed at the source.

## User

_`2026-02-24T19:47:38.128Z`_

<command-name>/model</command-name>
            <command-message>model</command-message>
            <command-args></command-args>

## User

_`2026-02-24T19:47:38.128Z`_

<local-command-stdout>Set model to [1mhaiku (claude-haiku-4-5@20251001)[22m</local-command-stdout>

## User

_`2026-02-24T19:47:48.345Z`_

let's document this and what else we built today and then we can ship this!

## Agent

_`2026-02-24T19:47:58.506Z`_

Perfect. Let me verify the test suite still passes:

## Agent

_`2026-02-24T19:48:00.670Z`_

Great! Now let me create a commit with all the changes:

## Agent

_`2026-02-24T19:48:03.248Z`_

I need to add the new `sanitize.py` file. Let me stage the actual code changes (not the history/fixture changes which came from syncing):

## Agent

_`2026-02-24T19:48:14.986Z`_

Perfect! Let me verify the commit:

## Agent

_`2026-02-24T19:48:19.370Z`_

Excellent! All shipped. Here's what you now have:

## Summary

**Two features added to `convx`:**

### 1. **Line-Level Sanitization** (`sanitize.py`)
Define keywords in `.convx/sanitize.toml` and entire lines containing them are replaced with `[SANITIZED]`:

```toml
keywords = [
  "everycure",
  "Every Cure",
]
```

- Case-insensitive matching
- Auto-gitignored config file (each user defines their own)
- Applied after secret redaction
- No partial leaks — full lines are replaced

### 2. **Force Overwrite Flag** (`--overwrite`)
Re-export all sessions, ignoring cached fingerprints, to clean previously-exported data:

```bash
convx sync --overwrite
convx backup --output-path ~/my-history --overwrite
```

Useful after adding new keywords to reprocess old exports.

**Files changed:**
- `src/convx_ai/sanitize.py` — new module (2 functions)
- `src/convx_ai/engine.py` — load keywords, apply sanitization after redaction
- `src/convx_ai/cli.py` — add `--overwrite` flag to sync & backup commands
- `tests/test_sanitize.py` — 13 tests (all passing)
- `AGENTS.md` — documented both features

Commit: `12fc699`
