hive-forge: add pr edit, reusing issue edit's shared /issues endpoint

hive-forge/src/verbs/issue_edit.rs

@@ -1,6 +1,9 @@
 //! `issue-edit <number> [--title <t>] [body sources] [--state s]
 //! [--milestone id] [repo]` — partial update of an issue. Fields not
-//! provided are left unchanged.
+//! provided are left unchanged. Also backs `pr edit`: Forgejo serves
+//! both kinds off the same `/issues/<n>` endpoint, so this is shared
+//! as-is — `pr_cmd.rs` wires it in with a `Kind::Pr` check, the same
+//! pattern `close`/`reopen`/`labels` already use.
 
 use anyhow::Result;
 use clap::{Args as ClapArgs, ValueEnum};
@@ -28,8 +31,8 @@ impl StateArg {
 
 #[derive(ClapArgs)]
 pub struct Args {
-    /// Issue number.
-    number: u64,
+    /// Issue (or PR — shares the same `/issues/<n>` endpoint) number.
+    pub(crate) number: u64,
     /// New title (omit to leave unchanged).
     #[arg(long)]
     title: Option<String>,