feat(web): copy session reference from context menu (#1144)

* feat(web): add Copy reference to session context menu

Refs tiann/hapi#950

Adds a More actions item that copies a cross-session citation
(see session "title" (/sessions/id) for context) instead of a
bare share URL.

Co-authored-by: Cursor <cursoragent@cursor.com>

* fix(web): sanitize session titles in copy-reference text

JSON-escape titles and collapse whitespace so arbitrary session
names cannot inject prompt text into cross-session citations.

Addresses Codex review on tiann/hapi#951.

Co-authored-by: Cursor <cursoragent@cursor.com>

---------

Co-authored-by: Cursor <cursoragent@cursor.com>

web/src/lib/locales/en.ts

@@ -176,6 +176,7 @@ export default {
   'session.action.reopenCursorCheckFailed': 'Could not verify Cursor chat data on the recorded machine.',
   'session.action.delete': 'Delete',
   'session.action.copy': 'Copy',
+  'session.action.copyReference': 'Copy reference',
 
   // Dialogs
   'dialog.uri.title': 'Open this link?',