style: rustfmt drift from the AMF/watchdog commits

`cargo fmt --all --check` (a CI gate) failed on main: config.rs (the new
`zerocopy: val(...).map { !matches!(...) }` from 8fb1264) and punktfunk1.rs
(the `reset_stalled_encoder` conditions from 06d594b) were left unwrapped by
the pinned rustfmt. Pure reformat, no semantic change.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

crates/punktfunk-host/src/config.rs

@@ -89,7 +89,10 @@ impl HostConfig {
                 .and_then(|s| s.parse::<usize>().ok())
                 .unwrap_or(2),
             zerocopy: val("PUNKTFUNK_ZEROCOPY").map(|s| {
-                !matches!(s.trim().to_ascii_lowercase().as_str(), "0" | "false" | "off" | "no")
+                !matches!(
+                    s.trim().to_ascii_lowercase().as_str(),
+                    "0" | "false" | "off" | "no"
+                )
             }),
             ten_bit: flag("PUNKTFUNK_10BIT"),
             four_four_four: flag("PUNKTFUNK_444"),

crates/punktfunk-host/src/punktfunk1.rs

@@ -3586,7 +3586,8 @@ fn virtual_stream(ctx: SessionContext) -> Result<()> {
             // (bounded) instead of killing an otherwise healthy session; a backend without an
             // in-place rebuild keeps today's fail-fast behavior.
             encoder_resets += 1;
-            if encoder_resets > MAX_ENCODER_RESETS || !reset_stalled_encoder(&mut enc, &mut inflight)
+            if encoder_resets > MAX_ENCODER_RESETS
+                || !reset_stalled_encoder(&mut enc, &mut inflight)
             {
                 return Err(e).context("encoder submit");
             }
@@ -3710,7 +3711,8 @@ fn virtual_stream(ctx: SessionContext) -> Result<()> {
                 ),
             };
             encoder_resets += 1;
-            if encoder_resets > MAX_ENCODER_RESETS || !reset_stalled_encoder(&mut enc, &mut inflight)
+            if encoder_resets > MAX_ENCODER_RESETS
+                || !reset_stalled_encoder(&mut enc, &mut inflight)
             {
                 return Err(poll_err.unwrap_or_else(|| anyhow!("{why}")))
                     .context("encoder stalled — in-place rebuild unavailable or exhausted");