main git command: diff --no-ext-diff --cached --patch --minimal
diff --git a/notes.doc b/notes.doc
index f9a49ce..8d39135 100644
--- a/notes.doc
+++ b/notes.doc
@@ -1 +1 @@
-converted /tmp/git-blob-dYA7Hx/notes.doc
+converted notes.doc
converter ran: true

fixed real driver, files: "all"
{
  "stagedSummary": "M\tnotes.doc",
  "stagedPatch": "diff --git a/notes.doc b/notes.doc\nindex f9a49ce..8d39135 100644\n--- a/notes.doc\n+++ b/notes.doc\n@@ -1 +1 @@\n-original source\n+updated source\n"
}

fixed real driver, files: ["notes.doc"]
{
  "stagedSummary": "M\tnotes.doc",
  "stagedPatch": "diff --git a/notes.doc b/notes.doc\nindex f9a49ce..8d39135 100644\n--- a/notes.doc\n+++ b/notes.doc\n@@ -1 +1 @@\n-original source\n+updated source\n"
}

custom message: summary present: true patch empty: true
converter ran after fixed driver: false
real index preserved: true
scope: real Git + server driver; no live provider or client exercised