feat: Add web UI for manual oneliner overrides

Adds a new POST endpoint for web-based oneliner overrides and updates
the UI to allow manual editing. The person icon replaces the pencil icon
for doctor-authored titles, signifying manual authorship rather than
editability.

server/tests/common/paths.rs

@@ -61,6 +61,12 @@ pub fn recording_delete(case_id: &str) -> String {
     format!("/web/cases/{case_id}/recordings/delete")
 }
 
+/// `POST /web/cases/{case_id}/oneliner` — session-authenticated manual
+/// oneliner override (browser web UI).
+pub fn case_oneliner_web(case_id: &str) -> String {
+    format!("/web/cases/{case_id}/oneliner")
+}
+
 /// `GET /web/magic?token={token}` — magic-link consumption.
 pub fn magic(token: &str) -> String {
     format!("/web/magic?token={token}")