port: move to formats-pin-2026-08-30 -- the voice export is complete

The late start was a second condition on the start filter, end - s < 1_500_000,
only within one bank. ADV's predecessor trailer sits 3618816 B before end, so it
was rejected and start fell back to anchor, a TOC offset rather than a stream
boundary -- which is why it hit regions over 1.5 MB and never single-stream ones.

ADV region 3114352 -> 3618816 B, streams 2 of 3 -> 3 of 3, complete, dropping
zero chunks. S00A 1 of 3 -> 2 of 3 with the third digitally silent. The runtime
no longer prints an incomplete line for either.

Also fixes the warning crying wolf: S00A still read KNOWN INCOMPLETE over a
93.694 s stream of exact zeroes. Exported gains content_waves and the warning,
console line and manifest field all key on kept < content rather than kept <
present. Second time in two iterations this warning was wrong in the cautious
direction -- over-warning is what makes the next real warning unreadable.

S00A is a second movie in the predicted direction: kept went 1 -> 2 because a
chunk that was a different duration now matches at 93.694 s. Not independent
ground truth, but a different asset and the outcome was predicted first.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01N7FiFFFwbvG2uxdcEh8HyF

crates/sylpheed-export/Cargo.toml

@@ -81,7 +81,7 @@ license.workspace = true
 # geometry -- does NOT reach this port from here: `sylpheed-cli` builds from the
 # WORKSPACE crate, so the reference renderer stays unrotated until the tag lands
 # on `main`. This bump is for the parser, not for the renderer.
-sylpheed-formats = { git = "https://git.mc02.dev/fabi/Sylpheed.git", tag = "formats-pin-2026-08-29d" }
+sylpheed-formats = { git = "https://git.mc02.dev/fabi/Sylpheed.git", tag = "formats-pin-2026-08-30" }
 
 serde      = { version = "1", features = ["derive"] }
 serde_json = "1"

crates/sylpheed-export/src/audio.rs

@@ -208,6 +208,12 @@ pub struct Exported {
     /// Exists so a "known incomplete" warning fires on the gap and not on the
     /// mere presence of more than one stream.
     pub kept_waves: usize,
+    /// How many of `sub_waves` carry SIGNAL. A dropped stream that is digitally
+    /// silent is not missing content, and a warning that fires on it is crying
+    /// wolf: `S00A`'s third chunk is 93.694 s of exact zeroes, so dropping it
+    /// costs nothing and saying "KNOWN INCOMPLETE" over it would train a reader
+    /// to ignore the one case that means something.
+    pub content_waves: usize,
     /// What the runtime should do at the end of the file, where that was
     /// authored. `None` on a cue: a cue ends.
     pub loop_mode: Option<String>,
@@ -353,6 +359,7 @@ pub fn export_cues<S: DiscSource + ?Sized>(
             loop_mode: None,
             sub_waves: 1,
             kept_waves: 1,
+            content_waves: 1,
         });
     }
     Ok(done)
@@ -523,6 +530,7 @@ pub fn export_bgm<S: DiscSource + ?Sized>(
         loop_mode: spec.r#loop.clone(),
         sub_waves: staged.len(),
         kept_waves: 1,
+        content_waves: 1,
     }))
 }
 
@@ -915,6 +923,7 @@ pub fn export_voice<S: DiscSource + ?Sized>(
         loop_mode: None,
         sub_waves: riffs.len(),
         kept_waves: staged.len(),
+        content_waves: riffs.len() - silent.len(),
     }))
 }
 

crates/sylpheed-export/src/main.rs

@@ -457,7 +457,7 @@ fn run_export(disc: &Path, out: &Path, authored_dir: &Path) -> Result<()> {
                     // export is known to be missing audio the game plays, and
                     // the failure sounds like success: one stream decodes to
                     // clean dialogue, so nobody listening finds out.
-                    if a.kept_waves < a.sub_waves {
+                    if a.kept_waves < a.content_waves {
                         warnings.push(format!(
                             "{}: KNOWN INCOMPLETE. This region holds {} streams and the RUNNING \
                              GAME DECODES ALL OF THEM CONCURRENTLY (Canary --xma_param_probe: \
@@ -477,7 +477,7 @@ fn run_export(disc: &Path, out: &Path, authored_dir: &Path) -> Result<()> {
                         describe(&a),
                         a.kept_waves,
                         a.sub_waves,
-                        if a.kept_waves < a.sub_waves { " -- KNOWN INCOMPLETE, see warnings" } else { "" }
+                        if a.kept_waves < a.content_waves { " -- KNOWN INCOMPLETE, see warnings" } else { "" }
                     );
                     audio.push(ManifestAudio::from(a));
                 }
@@ -517,7 +517,7 @@ impl From<audio::Exported> for ManifestAudio {
             why: a.why,
             peak_dbfs: a.peak_dbfs,
             duration_s: a.duration_s,
-            incomplete: (a.kept_waves < a.sub_waves).then(|| {
+            incomplete: (a.kept_waves < a.content_waves).then(|| {
                 format!(
                     "{} of {} streams. The running game decodes all {} concurrently. \
                      Nothing in the audio reveals the gap -- what plays is clean dialogue. \