rewrite generated CLI docs' passive voice to active

hive-forge and hivectl doc-comment strings for pr-create --label, diff
--full, list --label, ci-runs --branch, and several hivectl subcommand
options read as if things happened to themselves. Name the actor (hivectl,
hive-forge, or the CLI) instead, and regenerate the three docs/tools/*-cli.md
files from the rebuilt binaries.

swarmctl-cli.md needs no source change: its only passive hit is
clap-markdown's own generated boilerplate, out of scope here.

hive-forge/src/verbs/diff.rs

@@ -23,9 +23,9 @@ use crate::client::{Client, index};
 pub struct Args {
     /// PR number.
     number: u64,
-    /// Print the unfiltered diff. By default, autogenerated-file hunks
-    /// (`flake.lock`, `Cargo.lock`, …) are collapsed to a placeholder so
-    /// human-authored changes stay readable.
+    /// Print the unfiltered diff. By default, hive-forge collapses
+    /// autogenerated-file hunks (`flake.lock`, `Cargo.lock`, …) to a
+    /// placeholder so human-authored changes stay readable.
     #[arg(long)]
     full: bool,
 }