V4.2 Updated what ai_raw_response data is being captured. The changes were more extensive than I expected.

docs/ui/README.md

@@ -57,4 +57,5 @@ Each page contract contains:
 
 ## Current Baseline
 
-These contracts describe the V4 baseline with completed V4.1 UI behavior. Planned V4.2 evidence/provenance changes and draft V4.3 Settings/page-reordering changes are not described as current behavior.
+These contracts describe the V4 baseline with completed V4.1 behavior and V4.2 evidence/provenance behavior.
+Draft V4.3 Settings/page-reordering changes are not described as current behavior.

docs/ui/pages/jobs.md

@@ -58,9 +58,10 @@ Jobs manages transcription processing runs. A Job belongs to one Document, links
 ## Resubmit Behavior
 
 - The page shows current status and failed Source count.
-- The page explicitly states: `Resubmit queues only failed linked sources. New results overwrite prior page-level results.`
+- The page explains that resubmission queues failed linked Sources while preserving immutable prior attempt evidence.
 - The service blocks submission while processing is active or when no failed Sources exist.
-- Current behavior updates the existing page-level result when new output arrives.
+- `JobSource` remains the latest compatibility projection, while every provider call appends an `ExecutionAttempt`.
+- The latest successful `Source.raw_transcription` projection remains available while a retry is pending or fails.
 - Success reports the number of resubmitted Sources and returns to Job Detail.
 
 ## Delete Behavior
@@ -88,7 +89,3 @@ Jobs manages transcription processing runs. A Job belongs to one Document, links
 - `tests/ui/test_jobs_page.py`
 - `tests/services/test_job_service.py`
 - `tests/services/test_store.py`
-
-## Planned Change
-
-V4.2 replaces update-in-place retry evidence with append-only processing attempts and adds exact transport evidence. Until implemented, the current overwrite behavior must be labeled accurately rather than described as archival history. See the [V4.2 scope](../../ver4.2/scope_boundary_v4_2.md).

docs/ui/pages/sources.md

@@ -42,9 +42,13 @@ The list accepts optional `document_id` and `job_id` query parameters. Document
 ## Provider Evidence
 
 - Provider Evidence is associated with the latest JobSource execution.
-- AI Metadata and the current `raw_api_response` value are displayed as expandable formatted JSON.
+- New attempts display separate expandable Request Manifest, Transport Response, OpenRouter SDK Response Snapshot,
+  Normalized Metadata, Software Context, and Derived Artifacts sections.
+- Historical `raw_api_response` values are labeled as OpenRouter SDK response snapshots.
 - Missing evidence has an explicit empty state.
-- Under the current V4 implementation, `raw_api_response` is an OpenRouter SDK response snapshot, not an exact HTTP or native upstream-provider response.
+- Historical executions explicitly state that exact transport evidence was not captured.
+- **Export Evidence** downloads a versioned package containing source identity, attempts, artifacts, relationships,
+  schema versions, and integrity digests without source binaries, credentials, or machine-local source paths.
 
 ## Revision Behavior
 
@@ -82,5 +86,4 @@ The list accepts optional `document_id` and `job_id` query parameters. Document
 
 ## Planned Changes
 
-- V4.2 will rename and separate evidence layers, add exact OpenRouter transport capture, and preserve append-only attempts. See the [V4.2 scope](../../ver4.2/scope_boundary_v4_2.md).
 - Source page reordering is deferred to the [draft V4.3 scope](../../ver4.3/scope_boundary_v4_3.md).