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/health.rs

@@ -28,7 +28,7 @@ use utoipa::ToSchema;
 
 use crate::host_stats::ServerWarning;
 
-/// `GET /health/live` — liveness. Always `200`; no further checks.
+/// Liveness. Always `200`; no further checks.
 #[utoipa::path(
     get,
     path = "/health/live",
@@ -49,7 +49,7 @@ struct ReadyBody {
     warnings: Vec<ServerWarning>,
 }
 
-/// `GET /health/ready` — readiness.
+/// Readiness.
 ///
 /// `200` with `{"status":"ok", "warnings": [...]}` unless a `crit`-level
 /// warning is currently set in [`crate::warnings::snapshot`], in which