hive-c0re: drop redundant METHOD/path prefixes from OpenAPI summaries

Swagger UI's endpoint-list row already shows the HTTP method badge +
path for every row, so restating `METHOD /path` at the start of a
handler's own summary is pure duplication. Strips that self-referential
prefix from every summary that has it and re-capitalizes what follows
as a standalone sentence.

Left two false positives untouched: misc_api.rs's operator-inbox
summary cross-references a *different* sibling endpoint
(mark-all-read) for context, and topology.rs's SetParentForm struct
doc happens to mention its endpoint's path but isn't a handler summary
line. Both are legitimate, not redundant.

hive-c0re/src/dashboard/questions.rs

@@ -38,7 +38,7 @@ fn with_cors(resp: impl IntoResponse) -> Response {
     resp
 }
 
-/// `POST /answer-question/{id}` — record the operator's answer and
+/// Record the operator's answer and
 /// notify the asker.
 #[utoipa::path(
     post,
@@ -94,7 +94,7 @@ pub(super) async fn post_answer_question(
     with_cors(resp)
 }
 
-/// `POST /cancel-question/{id}` — resolve a pending question with the
+/// Resolve a pending question with the
 /// `[cancelled]` sentinel answer.
 ///
 /// Used when the operator decides not to / can't answer. The asker