> For the complete documentation index, see [llms.txt](https://ai-os-and-trend-finder.gitbook.io/ai-os-and-trend-finder-docs/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://ai-os-and-trend-finder.gitbook.io/ai-os-and-trend-finder-docs/.spec_system/archive/phases/phase_40/session_03_shared_redaction_foundation.md).

# Session 03: Shared Redaction Foundation

**Session ID**: `phase40-session03-shared-redaction-foundation` **Status**: Not Started **Estimated Tasks**: \~12-25 **Estimated Duration**: 2-4 hours

***

## Objective

Establish one reusable redaction and secret-detection layer before new browser-visible command, chat, and config-write outputs are added.

***

## Scope

### In Scope (MVP)

* Extend `scripts/lib/sanitize.ts` instead of creating a parallel Hermes-only sanitizer.
* Cover ANSI/CSI codes, home paths, symlink-realpath home paths, key/value secrets, token shapes, emails, account IDs, user IDs, channel IDs, chat IDs, and long opaque strings.
* Replace or wrap the Hermes admin-local `SECRET_PATTERN` where browser-visible output can include command output, chat output, MoA save details, YAML warnings, or bridge failure text.
* Keep detection narrow enough that model IDs, provider IDs, and ordinary prose are not over-redacted.
* Add fixtures for upstream-style output examples and AI OS private-path patterns.

### Out of Scope

* Adding the command endpoint.
* Adding the MoA save endpoint.
* Redesigning unrelated sanitizer consumers.

***

## Prerequisites

* [ ] Session 01 decisions and invariants are recorded.

***

## Deliverables

1. Shared bridge-output redaction helper and secret detector.
2. Focused sanitizer tests with positive and negative cases.
3. Migration point for command, chat, MoA save, and future bridge failures.

***

## Success Criteria

* [ ] Redaction removes private paths, tokens, emails, account IDs, ANSI escapes, and token-like opaque strings.
* [ ] Non-secret provider IDs, model IDs, and normal diagnostics survive.
* [ ] Existing sanitize behavior used outside Hermes does not regress.

***

## Folded Source Session Split

The section below preserves the original Phase 40 session split detail for this session, including dependencies, decisions, outputs, and acceptance checks.

### Session 03: Shared Redaction Foundation

**Objective**: Establish one reusable redaction and secret-detection layer before new browser-visible command, chat, and config-write outputs are added.

**Scope**:

* Extend `scripts/lib/sanitize.ts` instead of creating a parallel Hermes-only sanitizer.
* Cover ANSI/CSI codes, home paths, symlink-realpath home paths, key/value secrets, token shapes, emails, account/user/channel/chat IDs, and long opaque strings.
* Replace or wrap the Hermes admin-local `SECRET_PATTERN` where browser-visible output can include command output, chat stdout/stderr, MoA save details, YAML warnings, or bridge failure text.
* Keep warning detection narrow enough that non-secret model names, provider IDs, and ordinary prose are not over-redacted.
* Add fixtures for upstream-style examples and AI OS private-path patterns.

**Outputs**:

* Shared bridge-output redaction helper and secret detector.
* Focused sanitizer tests with positive and negative cases.
* A migration point for command, chat, MoA save, and future bridge failure paths.

**Dependencies / Notes**:

* Depends on Session 01.
* This is intentionally separate from command execution so every later endpoint can reuse the same tested helper.

**Acceptance Checks**:

* Redaction removes private paths, tokens, emails, account IDs, and ANSI escapes.
* Non-secret provider IDs, model IDs, and normal diagnostic words survive.
* Existing sanitize behavior used outside Hermes does not regress.


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