Outline: share as a read-only link

- Share on the Outline page opens a sheet: create / copy / turn off a
  read-only link, share the link with the system share sheet, or send the
  outline as text
- The link has its own token (separate from the whole-study share link) and
  the public endpoint returns only the outlines, rebuilt field by field:
  no observations, interpretations, applications, scripts or word notes
- Opening the link shows the outline(s) with no sign-in, a switcher between
  the whole-study and per-chunk outlines, and Print / PDF
- New outline_share_token column (added automatically on start)

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

src/syncService.js

@@ -103,6 +103,21 @@ export async function disableSharing(id) {
   return request('DELETE', `/projects/${id}/share`);
 }
 
+/** The project's read-only outline link: { shareToken } (null when off). A separate link from the study share. */
+export async function getOutlineShareStatus(id) {
+  return request('GET', `/projects/${id}/outline-share`);
+}
+export async function enableOutlineSharing(id) {
+  return request('POST', `/projects/${id}/outline-share`);
+}
+export async function disableOutlineSharing(id) {
+  return request('DELETE', `/projects/${id}/outline-share`);
+}
+/** Public lookup — no session. Returns { title, translation, outlines: [{ scope, label, tree }] }. */
+export async function getSharedOutline(token) {
+  return request('GET', `/share-outline/${token}`);
+}
+
 /** Public lookup — no session required. Returns the full project for a valid share token. */
 export async function getSharedProject(token) {
   return request('GET', `/share/${token}`);