diff --git a/Codex-Project-Index.md b/Codex-Project-Index.md
index ccdbce7..4061421 100644
--- a/Codex-Project-Index.md
+++ b/Codex-Project-Index.md
@@ -5,3 +5,4 @@
 This page is generated from repository and product-directory project files.
 
 - [Repo-README](Repo-README) - `/mnt/DATA/git/govoplan-audit/README.md`
+- [Repo-docs-AUDIT-TRACE-CONTEXT](Repo-docs-AUDIT-TRACE-CONTEXT) - `/mnt/DATA/git/govoplan-audit/docs/AUDIT_TRACE_CONTEXT.md`
diff --git a/Repo-README.md b/Repo-README.md
index 178925f..48c6566 100644
--- a/Repo-README.md
+++ b/Repo-README.md
@@ -1,4 +1,4 @@
-<!-- codex-wiki-sync:5c1e3528164dd482cfc7feda -->
+<!-- codex-wiki-sync:9256ff355f11994a1d607a32 -->
 
 > Mirrored from `/mnt/DATA/git/govoplan-audit/README.md`.
 > Origin: `repository`.
@@ -10,6 +10,10 @@
 `govoplan-audit` owns audit API route contributions during the GovOPlaN module
 split.
 
-This repository owns the live `audit_log` table while preserving the
-historical table name. It provides audit API route contributions and is the
-target boundary for future audit sink/export capability work.
+This repository owns the live `audit_log` table, audit API route
+contributions, and the target boundary for future audit sink/export capability
+work.
+
+See [docs/AUDIT_TRACE_CONTEXT.md](docs/AUDIT_TRACE_CONTEXT.md) for the standard
+operational context fields used by admin, installer, and module lifecycle audit
+entries.
diff --git a/Repo-docs-AUDIT-TRACE-CONTEXT.md b/Repo-docs-AUDIT-TRACE-CONTEXT.md
new file mode 100644
index 0000000..9022f81
--- /dev/null
+++ b/Repo-docs-AUDIT-TRACE-CONTEXT.md
@@ -0,0 +1,63 @@
+<!-- codex-wiki-sync:38bc34c5d1594eb6b36a3a9e -->
+
+> Mirrored from `/mnt/DATA/git/govoplan-audit/docs/AUDIT_TRACE_CONTEXT.md`.
+> Origin: `repository`.
+> Active tasks and changing state belong in Gitea issues; this wiki page is durable project context.
+
+---
+# Audit Trace Context
+
+Operational audit entries should let an administrator answer four questions:
+
+- who initiated the operation
+- what object was changed
+- which lifecycle request or run carried the change
+- how the entry connects to surrounding request, installer, or worker logs
+
+The actor, tenant, scope, action, object type, and object ID remain first-class
+`audit_log` columns. Additional operational context belongs in `details`.
+
+## Standard Fields
+
+Use these fields for admin, module lifecycle, installer, and worker operations:
+
+- `module_id`: module affected by the operation, when a single module is the
+  target.
+- `request_id`: queued installer/admin request identifier.
+- `run_id`: installer/worker run identifier.
+- `outcome`: compact state such as `planned`, `queued`, `applied`,
+  `cancelled`, `failed`, or `completed`.
+- `_trace.correlation_id`: request or workflow correlation ID.
+- `_trace.causation_id`: event, run, or operation that caused this audit entry.
+
+Bulk operations may also include concise arrays such as `activated`,
+`deactivated`, `mounted`, `planned_modules`, or sanitized `items`.
+
+## Redaction
+
+Audit detail payloads must not contain credentials, tokens, raw cookies,
+authorization headers, private keys, message bodies, uploaded file content, or
+other secret material. Use stable IDs, vault references, or package identifiers
+instead.
+
+The compatibility helper in core, `audit_operation_context`, keeps the standard
+fields compact and applies the shared audit redaction pass to additional detail
+values. Feature modules should follow the same shape even when they later write
+through a dedicated audit sink capability.
+
+## Module Lifecycle Events
+
+Module install, uninstall, enable, disable, rollback, and package-catalog
+acceptance events should include:
+
+- `object_type`: `module_install_plan`, `module_install_request`,
+  `module_state`, or another stable lifecycle object type.
+- `object_id`: module ID for single-module actions, otherwise `global` or the
+  request/run ID.
+- `details.module_id`, `details.request_id`, or `details.run_id` when present.
+- `details.outcome` with the lifecycle result.
+- `details._trace` when the operation originated from a request or queued
+  daemon action.
+
+This keeps admin UI timelines, audit exports, and rollback diagnostics aligned
+without coupling modules to the audit table implementation.