hive-forge, hivectl, swarmctl: fix clap help passive voice, regen docs

Rewrites every write-good.Passive hit in the hive-forge clap help text
into terse, imperative, active voice (meaning unchanged) and drops
clap-markdown's own fixed footer ('This document was generated
automatically by...') via MarkdownOptions::show_footer(false), since
that string isn't ours to reword and vale flagged it too.

docs/tools/{hivectl,swarmctl,forge}-cli.md are generated from each
crate's clap tree (see hive-forge/src/main.rs's MarkdownDocs verb) —
regenerated here from the fixed source, not hand-edited.

Refs #4549

hive-forge/src/verbs/comments.rs

@@ -54,8 +54,8 @@ pub struct Args {
     #[arg(long, conflicts_with = "tail")]
     limit: Option<u64>,
     /// Return the last `N` comments (chronological) — the most recent
-    /// activity. This is the default (`N` = 10) when neither `--limit`
-    /// nor `--tail` is given. Mutually exclusive with `--limit`/`--since`.
+    /// activity. Defaults to `N` = 10 when you pass neither `--limit`
+    /// nor `--tail`. Mutually exclusive with `--limit`/`--since`.
     #[arg(long, conflicts_with = "since")]
     tail: Option<usize>,
     /// Only show comments at or after this RFC3339 timestamp (same