gameplay: broadcast stateful scoreboard packets

crates/urt-gameplay/src/bin/urt-lifecycle.rs

@@ -394,6 +394,36 @@ fn run() -> Result<(), String> {
                 second.cached_ping as u32
             );
         }
+        "scoreboard-stream" if w.len() >= 6 && w[4] <= 64 && w[5] <= 64 => {
+            let n = w[4] as usize;
+            let count = w[5] as usize;
+            if w.len() < 6 + count {
+                return Err("missing scoreboard order".into());
+            }
+            let order: Vec<_> = w[6..6 + count].iter().map(|v| *v as usize).collect();
+            let (mut clients, names) = scoreboard_clients(&w[6 + count..], n)?;
+            let mut counter = w[3];
+            let packets = urt_gameplay::scoreboard_wire::broadcast(
+                &mut clients,
+                &names,
+                &order,
+                w[0] as i32,
+                [w[1] as i32, w[2] as i32],
+                &mut counter,
+            )
+            .map_err(|e| format!("unsupported input: {e:?}"))?;
+            let values:Vec<_>=packets.iter().map(|t|format!("{{\"recipient\":{},\"accepted\":{},\"attempted\":{},\"payload_length\":{},\"cstring_hex\":\"{}\",\"buffer_index\":{},\"counter\":{}}}",t.recipient,t.packet.accepted,t.packet.attempted,t.packet.payload_length,t.packet.cstring.iter().map(|v|format!("{v:02x}")).collect::<String>(),t.packet.buffer_index,t.counter)).collect();
+            println!(
+                "{{\"packets\":[{}],\"counter\":{},\"cached\":[{}]}}",
+                values.join(","),
+                counter,
+                clients
+                    .iter()
+                    .map(|c| (c.cached_ping as u32).to_string())
+                    .collect::<Vec<_>>()
+                    .join(",")
+            );
+        }
         "scoreboard-packet" if w.len() >= 6 && w[4] <= 64 && w[5] <= 64 => {
             let n = w[4] as usize;
             let count = w[5] as usize;

crates/urt-gameplay/src/scoreboard_wire.rs

@@ -48,16 +48,7 @@ pub fn prepare(
     scores: [i32; 2],
     counter: &mut u32,
 ) -> Result<Packet, Error> {
-    if clients.len() > 64 || names.len() != clients.len() || order.len() > 64 {
-        return Err(Error::InvalidOrder);
-    }
-    let mut seen = vec![false; clients.len()];
-    for &id in order {
-        if id >= clients.len() || seen[id] {
-            return Err(Error::InvalidOrder);
-        }
-        seen[id] = true;
-    }
+    validate(clients, names, order)?;
     let mut payload = vec![];
     let mut accepted = 0;
     let mut attempted = 0;
@@ -92,6 +83,50 @@ pub fn prepare(
         buffer_index,
     })
 }
+fn validate(clients: &[Client], names: &[Vec<u8>], order: &[usize]) -> Result<(), Error> {
+    if clients.len() > 64 || names.len() != clients.len() || order.len() > 64 {
+        return Err(Error::InvalidOrder);
+    }
+    let mut seen = vec![false; clients.len()];
+    for &id in order {
+        if id >= clients.len() || seen[id] {
+            return Err(Error::InvalidOrder);
+        }
+        seen[id] = true;
+    }
+    Ok(())
+}
+#[derive(Clone, Debug, PartialEq, Eq)]
+pub struct Transmission {
+    pub recipient: usize,
+    pub packet: Packet,
+    pub counter: u32,
+}
+/// Source6328 scan with actual179363 contract effects between recipients.
+/// Native sends are represented as transmissions and do not change connections.
+pub fn broadcast(
+    clients: &mut [Client],
+    names: &[Vec<u8>],
+    order: &[usize],
+    now: i32,
+    scores: [i32; 2],
+    counter: &mut u32,
+) -> Result<Vec<Transmission>, Error> {
+    validate(clients, names, order)?;
+    let mut packets = vec![];
+    for recipient in 0..clients.len() {
+        if clients[recipient].connection != 2 {
+            continue;
+        }
+        let packet = prepare(clients, names, order, now, scores, counter)?;
+        packets.push(Transmission {
+            recipient,
+            packet,
+            counter: *counter,
+        });
+    }
+    Ok(packets)
+}
 #[cfg(test)]
 mod tests {
     use super::*;
@@ -118,6 +153,45 @@ mod tests {
         }
     }
     #[test]
+    fn broadcast_reuses_cache_ring_and_recipient_scan_order() {
+        let mut c = client();
+        c.connection = 2;
+        c.ping = 7;
+        let mut clients = [c, c];
+        let mut counter = u32::MAX;
+        let p = broadcast(
+            &mut clients,
+            &[vec![], vec![255, 254]],
+            &[1, 0],
+            0,
+            [1, 2],
+            &mut counter,
+        )
+        .unwrap();
+        assert_eq!(p.iter().map(|p| p.recipient).collect::<Vec<_>>(), [0, 1]);
+        assert_eq!(
+            (p[0].packet.buffer_index, p[1].packet.buffer_index, counter),
+            (1, 0, 1)
+        );
+        assert!(clients.iter().all(|c| c.cached_ping == 7));
+        assert_eq!(p[0].packet.cstring, p[1].packet.cstring);
+    }
+    #[test]
+    fn no_recipients_preserve_counter_but_malformed_input_rejects() {
+        let mut clients = [client()];
+        let mut counter = 77;
+        assert_eq!(
+            broadcast(&mut clients, &[vec![]], &[0], 0, [0, 0], &mut counter).unwrap(),
+            []
+        );
+        assert_eq!(counter, 77);
+        assert_eq!(
+            broadcast(&mut clients, &[vec![]], &[0, 0], 0, [0, 0], &mut counter),
+            Err(Error::InvalidOrder)
+        );
+        assert_eq!(counter, 77);
+    }
+    #[test]
     fn exact_capacity_and_rejected_candidate_cache_effect() {
         let mut c = client();
         c.packed = 0;

docs/FINDINGS.md

@@ -1427,3 +1427,6 @@ RE-791–800 adds exact Rust source-sort/ranking parity, mixed count/prefix sema
 
 
 **RE-809:** 6328 now composes actual scoreboard bodies for successive recipients, preserving cache mutations, refreshed frame arguments and alternating output pointers. [Evidence](research/QVM_SCOREBOARD_STREAM.md).
+
+
+**RE-810:** Rust now matches successive source scoreboard packets with shared cache and ring state, rather than producing isolated per-recipient projections. [Evidence](research/RUST_SCOREBOARD_STREAM.md).

docs/PROVISIONAL_TODO.md

@@ -1434,3 +1434,6 @@ RE-808: Rust matches exact modeled scoreboard bytes, accepted/attempted counts,
 
 
 RE-809: 6328 now composes actual scoreboard bodies for successive recipients, preserving cache mutations, refreshed frame arguments and alternating output pointers. Full runtime completion remains open. [Evidence](research/QVM_SCOREBOARD_STREAM.md).
+
+
+RE-810: Rust now matches successive source scoreboard packets with shared cache and ring state, rather than producing isolated per-recipient projections. Full runtime completion remains open. [Evidence](research/RUST_SCOREBOARD_STREAM.md).

docs/RESEARCH_LEDGER.md

@@ -1711,3 +1711,8 @@ Rust matches exact modeled scoreboard bytes, accepted/attempted counts, rejected
 ## 2026-10-26 — RE-809 Source scoreboard broadcast with shared packet and cache state
 
 6328 now composes actual scoreboard bodies for successive recipients, preserving cache mutations, refreshed frame arguments and alternating output pointers. Focused `cargo xtask test-group scoreboard-stream` passes (5 Python tests); selected reports regenerate twice deterministically, with storage, documentation links and whitespace guards. Full suite deferred to task ten. Original assets unchanged; source fixtures do not establish complete native/runtime parity.
+
+
+## 2026-10-26 — RE-810 Rust stateful scoreboard broadcast transmission contract
+
+Rust now matches successive source scoreboard packets with shared cache and ring state, rather than producing isolated per-recipient projections. Focused `cargo xtask test-group rust-scoreboard-stream` passes (11 Python tests); selected reports regenerate twice deterministically, with storage, documentation links and whitespace guards. Full suite deferred to task ten. Original assets unchanged; source fixtures do not establish complete native/runtime parity.

docs/REVERSE_ENGINEERING_TODO.md

@@ -1477,3 +1477,6 @@ Purpose: turn the supplied installation into an evidence-backed specification of
 
 
 - [x] RE-809 Source scoreboard broadcast with shared packet and cache state ([evidence](research/QVM_SCOREBOARD_STREAM.md)).
+
+
+- [x] RE-810 Rust stateful scoreboard broadcast transmission contract ([evidence](research/RUST_SCOREBOARD_STREAM.md)).

docs/research/README.md

@@ -1017,3 +1017,6 @@ The extension collector adds five focused tests for native tail calls, command-r
 
 
 [RE-809: Source scoreboard broadcast with shared packet and cache state](QVM_SCOREBOARD_STREAM.md).
+
+
+[RE-810: Rust stateful scoreboard broadcast transmission contract](RUST_SCOREBOARD_STREAM.md).

docs/research/RUST_SCOREBOARD_STREAM.md

@@ -0,0 +1,7 @@
+# Rust stateful scoreboard broadcast transmission contract
+
+RE-810. Reproduce with `python3 scripts/analyze_rust_scoreboard_stream.py`; focused validation: `cargo xtask test-group rust-scoreboard-stream`. [Machine report](rust-scoreboard-stream.json).
+
+The broadcast API scans state2 clients in original order and runs packet preparation between recipients. Input shape validates before mutations, even when no recipients qualify; no-recipient broadcasts preserve the ring counter. Ten original-control-flow fixtures match every transmission byte and metadata plus final cache/counter state. Native send and exit-rule state changes remain outside this pure transmission contract.
+
+Original executable/native runtime and complete Linux/macOS Rust/Bevy/Solari acceptance remain unverified.

docs/research/rust-health-impulse.json

@@ -2985,7 +2985,7 @@
       "exit_code": 2
     }
   ],
-  "rust_unit_tests": 69,
+  "rust_unit_tests": 71,
   "source_report": "docs/research/qvm-health-impulse.json",
   "source_report_sha256": "625fd8064004ea6dbdf398d51d0af844d9c635ff04c0a0790886dddb6ab81e71"
 }

docs/research/rust-scoreboard-stream.json

@@ -0,0 +1,587 @@
+{
+  "limits": "Rust source6328/179363 modeled stream parity over10 shared-state fixtures, with cache/ring carry and byte-exact transmissions. No native37914/strncpy/send/exit-rule side effects or full game runtime execution.",
+  "probes": [
+    {
+      "rust": {
+        "cached": [],
+        "counter": 0,
+        "packets": []
+      },
+      "source": {
+        "cached": [],
+        "counter": 0,
+        "packets": []
+      }
+    },
+    {
+      "rust": {
+        "cached": [],
+        "counter": 4294967295,
+        "packets": []
+      },
+      "source": {
+        "cached": [],
+        "counter": 4294967295,
+        "packets": []
+      }
+    },
+    {
+      "rust": {
+        "cached": [
+          50
+        ],
+        "counter": 1,
+        "packets": [
+          {
+            "accepted": 1,
+            "attempted": 1,
+            "buffer_index": 0,
+            "counter": 1,
+            "cstring_hex": "73636f72657320312032203120302037202d31203320302033203920323535202d383338383630372031372034203231202d2d2d00",
+            "payload_length": 40,
+            "recipient": 0
+          }
+        ]
+      },
+      "source": {
+        "cached": [
+          50
+        ],
+        "counter": 1,
+        "packets": [
+          {
+            "accepted": 1,
+            "attempted": 1,
+            "buffer_index": 0,
+            "counter": 1,
+            "cstring_hex": "73636f72657320312032203120302037202d31203320302033203920323535202d383338383630372031372034203231202d2d2d00",
+            "payload_length": 40,
+            "recipient": 0
+          }
+        ]
+      }
+    },
+    {
+      "rust": {
+        "cached": [
+          50
+        ],
+        "counter": 0,
+        "packets": [
+          {
+            "accepted": 1,
+            "attempted": 1,
+            "buffer_index": 1,
+            "counter": 0,
+            "cstring_hex": "73636f72657320312032203120302037202d31203320302033203920323535202d383338383630372031372034203231202d2d2d00",
+            "payload_length": 40,
+            "recipient": 0
+          }
+        ]
+      },
+      "source": {
+        "cached": [
+          50
+        ],
+        "counter": 0,
+        "packets": [
+          {
+            "accepted": 1,
+            "attempted": 1,
+            "buffer_index": 1,
+            "counter": 0,
+            "cstring_hex": "73636f72657320312032203120302037202d31203320302033203920323535202d383338383630372031372034203231202d2d2d00",
+            "payload_length": 40,
+            "recipient": 0
+          }
+        ]
+      }
+    },
+    {
+      "rust": {
+        "cached": [
+          50,
+          101,
+          52
+        ],
+        "counter": 2,
+        "packets": [
+          {
+            "accepted": 3,
+            "attempted": 3,
+            "buffer_index": 0,
+            "counter": 1,
+            "cstring_hex": "73636f72657320332032203120322037203532203320302033203920323535202d383338383630372031372034203139206c6f6e67202573206e616d652031203720313031203320312033203920323535202d38333838363037203137203420323020414220302037202d31203320302033203920323535202d383338383630372031372034203231202d2d2d00",
+            "payload_length": 129,
+            "recipient": 0
+          },
+          {
+            "accepted": 3,
+            "attempted": 3,
+            "buffer_index": 1,
+            "counter": 2,
+            "cstring_hex": "73636f72657320332032203120322037203532203320302033203920323535202d383338383630372031372034203139206c6f6e67202573206e616d652031203720313031203320312033203920323535202d38333838363037203137203420323020414220302037202d31203320302033203920323535202d383338383630372031372034203231202d2d2d00",
+            "payload_length": 129,
+            "recipient": 2
+          }
+        ]
+      },
+      "source": {
+        "cached": [
+          50,
+          101,
+          52
+        ],
+        "counter": 2,
+        "packets": [
+          {
+            "accepted": 3,
+            "attempted": 3,
+            "buffer_index": 0,
+            "counter": 1,
+            "cstring_hex": "73636f72657320332032203120322037203532203320302033203920323535202d383338383630372031372034203139206c6f6e67202573206e616d652031203720313031203320312033203920323535202d38333838363037203137203420323020414220302037202d31203320302033203920323535202d383338383630372031372034203231202d2d2d00",
+            "payload_length": 129,
+            "recipient": 0
+          },
+          {
+            "accepted": 3,
+            "attempted": 3,
+            "buffer_index": 1,
+            "counter": 2,
+            "cstring_hex": "73636f72657320332032203120322037203532203320302033203920323535202d383338383630372031372034203139206c6f6e67202573206e616d652031203720313031203320312033203920323535202d38333838363037203137203420323020414220302037202d31203320302033203920323535202d383338383630372031372034203231202d2d2d00",
+            "payload_length": 129,
+            "recipient": 2
+          }
+        ]
+      }
+    },
+    {
+      "rust": {
+        "cached": [
+          50,
+          101,
+          52
+        ],
+        "counter": 1,
+        "packets": [
+          {
+            "accepted": 3,
+            "attempted": 3,
+            "buffer_index": 1,
+            "counter": 0,
+            "cstring_hex": "73636f72657320332032203120322037203532203320302033203920323535202d383338383630372031372034203139206c6f6e67202573206e616d652031203720313031203320312033203920323535202d38333838363037203137203420323020414220302037202d31203320302033203920323535202d383338383630372031372034203231202d2d2d00",
+            "payload_length": 129,
+            "recipient": 0
+          },
+          {
+            "accepted": 3,
+            "attempted": 3,
+            "buffer_index": 0,
+            "counter": 1,
+            "cstring_hex": "73636f72657320332032203120322037203532203320302033203920323535202d383338383630372031372034203139206c6f6e67202573206e616d652031203720313031203320312033203920323535202d38333838363037203137203420323020414220302037202d31203320302033203920323535202d383338383630372031372034203231202d2d2d00",
+            "payload_length": 129,
+            "recipient": 2
+          }
+        ]
+      },
+      "source": {
+        "cached": [
+          50,
+          101,
+          52
+        ],
+        "counter": 1,
+        "packets": [
+          {
+            "accepted": 3,
+            "attempted": 3,
+            "buffer_index": 1,
+            "counter": 0,
+            "cstring_hex": "73636f72657320332032203120322037203532203320302033203920323535202d383338383630372031372034203139206c6f6e67202573206e616d652031203720313031203320312033203920323535202d38333838363037203137203420323020414220302037202d31203320302033203920323535202d383338383630372031372034203231202d2d2d00",
+            "payload_length": 129,
+            "recipient": 0
+          },
+          {
+            "accepted": 3,
+            "attempted": 3,
+            "buffer_index": 0,
+            "counter": 1,
+            "cstring_hex": "73636f72657320332032203120322037203532203320302033203920323535202d383338383630372031372034203139206c6f6e67202573206e616d652031203720313031203320312033203920323535202d38333838363037203137203420323020414220302037202d31203320302033203920323535202d383338383630372031372034203231202d2d2d00",
+            "payload_length": 129,
+            "recipient": 2
+          }
+        ]
+      }
+    },
+    {
+      "rust": {
+        "cached": [
+          50,
+          101,
+          999,
+          103,
+          999,
+          105,
+          999,
+          107
+        ],
+        "counter": 2,
+        "packets": [
+          {
+            "accepted": 8,
+            "attempted": 8,
+            "buffer_index": 0,
+            "counter": 1,
+            "cstring_hex": "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",
+            "payload_length": 339,
+            "recipient": 0
+          },
+          {
+            "accepted": 8,
+            "attempted": 8,
+            "buffer_index": 1,
+            "counter": 2,
+            "cstring_hex": "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",
+            "payload_length": 339,
+            "recipient": 7
+          }
+        ]
+      },
+      "source": {
+        "cached": [
+          50,
+          101,
+          999,
+          103,
+          999,
+          105,
+          999,
+          107
+        ],
+        "counter": 2,
+        "packets": [
+          {
+            "accepted": 8,
+            "attempted": 8,
+            "buffer_index": 0,
+            "counter": 1,
+            "cstring_hex": "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",
+            "payload_length": 339,
+            "recipient": 0
+          },
+          {
+            "accepted": 8,
+            "attempted": 8,
+            "buffer_index": 1,
+            "counter": 2,
+            "cstring_hex": "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",
+            "payload_length": 339,
+            "recipient": 7
+          }
+        ]
+      }
+    },
+    {
+      "rust": {
+        "cached": [
+          50,
+          101,
+          999,
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+            "cstring_hex": "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",
+            "payload_length": 990,
+            "recipient": 31
+          }
+        ]
+      },
+      "source": {
+        "cached": [
+          100,
+          101,
+          102,
+          103,
+          104,
+          105,
+          106,
+          107,
+          999,
+          109,
+          999,
+          111,
+          999,
+          113,
+          999,
+          115,
+          999,
+          117,
+          999,
+          119,
+          999,
+          121,
+          999,
+          123,
+          999,
+          125,
+          999,
+          127,
+          999,
+          129,
+          999,
+          131
+        ],
+        "counter": 1,
+        "packets": [
+          {
+            "accepted": 23,
+            "attempted": 24,
+            "buffer_index": 1,
+            "counter": 0,
+            "cstring_hex": "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",
+            "payload_length": 990,
+            "recipient": 0
+          },
+          {
+            "accepted": 23,
+            "attempted": 24,
+            "buffer_index": 0,
+            "counter": 1,
+            "cstring_hex": "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",
+            "payload_length": 990,
+            "recipient": 31
+          }
+        ]
+      }
+    }
+  ],
+  "source_report": "docs/research/qvm-scoreboard-stream.json",
+  "source_report_sha256": "a39dbbd006e0ee080fe046921881da6d7eac9ec939511286bbcce049b0c75a00"
+}

scripts/analyze_rust_scoreboard_stream.py

@@ -0,0 +1,16 @@
+#!/usr/bin/env python3
+import hashlib,json
+from pathlib import Path
+from analyze_rust_scoreboard_packet import client_words
+from rust_lifecycle_support import binary,result
+from analyze_qvm import write_json
+
+def main():
+    b=binary();p=Path('docs/research/qvm-scoreboard-stream.json');data=p.read_bytes();rows=[]
+    for s in json.loads(data)['probes']:
+        c=s['clients'];r=result(b,'scoreboard-stream',[s['now'],*s['scores'],s['ring_before'],len(c),len(s['order']),*s['order'],*client_words(c)]);packets=[]
+        for packet in s['packets']:
+            send=packet['sends'][0];packets.append({'recipient':send['recipient'],'accepted':packet['accepted'],'attempted':len(packet['rows']),'payload_length':packet['payload_length'],'cstring_hex':send['cstring_hex'],'buffer_index':int(send['pointer']!=35032232),'counter':packet['ring_counter']})
+        rows.append({'source':{'packets':packets,'counter':s['ring_after'],'cached':s['final_cache']},'rust':r})
+    write_json(Path('docs/research/rust-scoreboard-stream.json'),{'source_report':str(p),'source_report_sha256':hashlib.sha256(data).hexdigest(),'probes':rows,'limits':'Rust source6328/179363 modeled stream parity over10 shared-state fixtures, with cache/ring carry and byte-exact transmissions. No native37914/strncpy/send/exit-rule side effects or full game runtime execution.'})
+if __name__=='__main__':main()

scripts/test_rust_scoreboard_stream.py

@@ -0,0 +1,9 @@
+import hashlib,json,unittest
+from pathlib import Path
+class RustScoreboardStreamTests(unittest.TestCase):
+    def test_exact_stateful_source_outputs(self):
+        r=json.loads(Path('docs/research/rust-scoreboard-stream.json').read_text());self.assertEqual(len(r['probes']),10)
+        for p in r['probes']:self.assertEqual(p['rust'],p['source'])
+    def test_identity_and_multiple_recipient_wrap_coverage(self):
+        r=json.loads(Path('docs/research/rust-scoreboard-stream.json').read_text());self.assertEqual(hashlib.sha256(Path(r['source_report']).read_bytes()).hexdigest(),r['source_report_sha256']);self.assertTrue(any(len(p['rust']['packets'])==2 and p['rust']['packets'][0]['counter']==0 for p in r['probes']))
+if __name__=='__main__':unittest.main()

xtask/checks.tsv

@@ -1948,3 +1948,18 @@ report	scripts/analyze_qvm_scoreboard_stream.py	docs/research/qvm-scoreboard-str
 edge	docs/research/qvm-scoreboard-stream.json	scripts/test_qvm_scoreboard_stream.py
 group	scoreboard-stream	scripts/analyze_qvm_scoreboard_stream.py
 edge	scripts/analyze_qvm_scoreboard_stream.py	scripts/analyze_qvm_resumer_audit.py
+edge	Cargo.toml	scripts/analyze_rust_scoreboard_stream.py
+edge	Cargo.lock	scripts/analyze_rust_scoreboard_stream.py
+edge	crates/urt-gameplay/Cargo.toml	scripts/analyze_rust_scoreboard_stream.py
+edge	crates/urt-gameplay/src/lib.rs	scripts/analyze_rust_scoreboard_stream.py
+edge	crates/urt-gameplay/src/bin/urt-lifecycle.rs	scripts/analyze_rust_scoreboard_stream.py
+edge	crates/urt-gameplay/src/scoreboard_wire.rs	scripts/analyze_rust_scoreboard_stream.py
+edge	crates/urt-gameplay/src/recipient_wire.rs	scripts/analyze_rust_scoreboard_stream.py
+edge	crates/urt-gameplay/src/recipient_payload.rs	scripts/analyze_rust_scoreboard_stream.py
+group	gameplay	scripts/analyze_rust_scoreboard_stream.py
+group	rust-scoreboard-stream	scripts/analyze_rust_health_impulse.py
+group	rust-scoreboard-stream	scripts/analyze_rust_scoreboard_packet.py
+report	scripts/analyze_rust_scoreboard_stream.py	docs/research/rust-scoreboard-stream.json
+edge	docs/research/rust-scoreboard-stream.json	scripts/test_rust_scoreboard_stream.py
+group	rust-scoreboard-stream	scripts/analyze_rust_scoreboard_stream.py
+edge	scripts/analyze_rust_scoreboard_stream.py	scripts/analyze_qvm_resumer_audit.py