fix: the remote docs name the Edit history diffs as the exception (release review)

"Nothing is copied to the Codeman host" stopped being true when the Edit
history panel started keeping diffs read from a remote session's
transcripts. The README, the wiki's Remote SSH Sessions page and its
Security page now name that exception, in the wording the PR already uses
on Working With Files and in remote-sessions.md.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

docs/wiki/Remote-SSH-Sessions.md

@@ -77,9 +77,11 @@ clamping each other, and discovery shows a shared badge with the client count.
 
 Previews, downloads and text reads in a remote case go over the same ssh connection the
 session uses, so a clicked path opens the file on the machine the agent is on, `Range`
-seeking included. Nothing is copied to the Codeman host. Editing, Office previews,
-thumbnails, the file tree and the tail viewer are not available remotely and answer a clear
-400 rather than a misleading 404. Details in [Working With Files](Working-With-Files).
+seeking included. Nothing is copied to the Codeman host, apart from the diffs the
+[Edit history](Working-With-Files#edit-history) panel keeps, which works for remote Claude
+sessions too. Editing, Office previews, thumbnails, the file tree and the tail viewer are not
+available remotely and answer a clear 400 rather than a misleading 404. Details in
+[Working With Files](Working-With-Files).
 
 ## Security
 

docs/wiki/Security.md

@@ -68,7 +68,7 @@ be wrong for at least one of them:
 | **File Viewer**      | Real path resolution before boundary checks, so symlinks cannot escape. Sensitive trees blocked. Edit mode adds an extension allowlist, a size cap, `.git` denial, and optimistic concurrency. It never creates files. |
 | **Attachments**      | An id-based registry, so browser requests never carry absolute paths. The magic-link scanner is prompt-injectable by nature and is therefore force-confined to the session's workspace. Extension allowlist, not a blocklist. |
 | **Path picker**      | Its own root allowlist rather than the workspace confinement. In multi-user mode a non-admin gets only their own user space, because per-user spaces live inside the home directory. |
-| **Remote cases**     | Reads go over the session's own ssh connection and are resolved and contained on the remote host, with a bounded number of ssh children. Nothing is copied to the Codeman host; writes, Office previews and thumbnails are refused. |
+| **Remote cases**     | Reads go over the session's own ssh connection and are resolved and contained on the remote host, with a bounded number of ssh children. Nothing is copied to the Codeman host, apart from the diffs the Edit history panel reads from a remote Claude session's transcripts while it is open, kept in a private bounded store (0600) that is deleted with the session's record. Writes, Office previews and thumbnails are refused. |
 
 Downloads block sensitive paths outright (`.env`, credentials files, `~/.ssh`, AWS
 credentials), and SVG and HTML are served as downloads with `nosniff` so they cannot execute