gameplay: port rotation refresh policy

crates/urt-gameplay/src/bin/urt-map-commands.rs

@@ -0,0 +1,74 @@
+use urt_gameplay::map_commands::*;
+fn hex(v: &[u8]) -> String {
+    v.iter().map(|v| format!("{v:02x}")).collect()
+}
+fn bytes(w: &[u32], p: &mut usize) -> Result<Vec<u8>, String> {
+    let n = *w.get(*p).ok_or("missing byte length")? as usize;
+    *p += 1;
+    if n > 4096 || n > w.len() - *p {
+        return Err("invalid byte length".into());
+    }
+    let data = w[*p..*p + n]
+        .iter()
+        .map(|v| u8::try_from(*v).map_err(|_| "invalid byte".to_string()))
+        .collect::<Result<Vec<_>, _>>()?;
+    *p += n;
+    Ok(data)
+}
+fn rotation_json(e: &[RotationEffect]) -> String {
+    format!(
+        "[{}]",
+        e.iter()
+            .map(|e| match e {
+                RotationEffect::Refresh => "{\"op\":\"refresh\"}".into(),
+                RotationEffect::Write(v) => format!("{{\"op\":\"write\",\"text\":\"{}\"}}", hex(v)),
+                RotationEffect::Clear => "{\"op\":\"clear\"}".into(),
+                RotationEffect::Reset => "{\"op\":\"reset\"}".into(),
+            })
+            .collect::<Vec<String>>()
+            .join(",")
+    )
+}
+fn run() -> Result<String, String> {
+    let a = std::env::args().skip(1).collect::<Vec<_>>();
+    let kind = a.first().ok_or("missing command")?;
+    let w = a[1..]
+        .iter()
+        .map(|v| v.parse::<u32>().map_err(|_| "invalid word".to_string()))
+        .collect::<Result<Vec<_>, _>>()?;
+    match kind.as_str() {
+        "rotation" => {
+            if w.len() < 3 {
+                return Err("missing rotation header".into());
+            }
+            let mut p = 3;
+            let updated = bytes(&w, &mut p)?;
+            if p != w.len() {
+                return Err("trailing rotation words".into());
+            }
+            let mut state = Rotation {
+                enabled: w[0] as i32,
+                cursor: w[1] as i32,
+                limit: w[2] as i32,
+                filename: b"previous.cfg".to_vec(),
+            };
+            let effects = advance_rotation(&mut state, &updated).map_err(|e| format!("{e:?}"))?;
+            Ok(format!(
+                "{{\"cursor\":{},\"filename\":\"{}\",\"operations\":{}}}",
+                state.cursor as u32,
+                hex(&state.filename),
+                rotation_json(&effects)
+            ))
+        }
+        _ => Err("unknown command".into()),
+    }
+}
+fn main() {
+    match run() {
+        Ok(s) => println!("{s}"),
+        Err(e) => {
+            eprintln!("{e}");
+            std::process::exit(2);
+        }
+    }
+}

crates/urt-gameplay/src/lib.rs

@@ -177,3 +177,5 @@ pub mod intermission;
 pub mod transition;
 
 pub mod camera_world;
+
+pub mod map_commands;

crates/urt-gameplay/src/map_commands.rs

@@ -0,0 +1,96 @@
+//! Recovered command and map-change policies. Engine callbacks are explicit inputs/intents.
+#[derive(Clone, Copy, Debug, PartialEq, Eq)]
+pub enum Error {
+    BytesTooLong,
+    InvalidCount,
+    ModeMismatch,
+}
+fn logical(bytes: &[u8]) -> Result<Vec<u8>, Error> {
+    if bytes.len() > 4096 {
+        return Err(Error::BytesTooLong);
+    }
+    Ok(bytes.split(|v| *v == 0).next().unwrap_or_default().to_vec())
+}
+#[derive(Clone, Debug, PartialEq, Eq)]
+pub struct Rotation {
+    pub enabled: i32,
+    pub cursor: i32,
+    pub limit: i32,
+    pub filename: Vec<u8>,
+}
+#[derive(Clone, Debug, PartialEq, Eq)]
+pub enum RotationEffect {
+    Refresh,
+    Write(Vec<u8>),
+    Clear,
+    Reset,
+}
+pub fn advance_rotation(
+    state: &mut Rotation,
+    updated: &[u8],
+) -> Result<Vec<RotationEffect>, Error> {
+    if state.enabled == 0 {
+        return Ok(vec![]);
+    }
+    let next = state.cursor.wrapping_add(1);
+    if next < state.limit {
+        state.cursor = next;
+        return Ok(vec![]);
+    }
+    let filename = logical(updated)?;
+    let mut effects = vec![RotationEffect::Refresh];
+    if !filename.is_empty() {
+        effects.extend([
+            RotationEffect::Write(filename.clone()),
+            RotationEffect::Clear,
+        ]);
+    }
+    effects.push(RotationEffect::Reset);
+    state.cursor = 0;
+    state.filename = filename;
+    Ok(effects)
+}
+#[cfg(test)]
+mod rotation_tests {
+    use super::*;
+    #[test]
+    fn refreshed_filename_controls_optional_write() {
+        let mut s = Rotation {
+            enabled: 1,
+            cursor: 1,
+            limit: 2,
+            filename: b"old".to_vec(),
+        };
+        assert_eq!(
+            advance_rotation(&mut s, b"new\0tail"),
+            Ok(vec![
+                RotationEffect::Refresh,
+                RotationEffect::Write(b"new".to_vec()),
+                RotationEffect::Clear,
+                RotationEffect::Reset
+            ])
+        );
+        assert_eq!((s.cursor, s.filename), (0, b"new".to_vec()));
+    }
+    #[test]
+    fn signed_wrap_disabled_and_invalid_refresh() {
+        let mut s = Rotation {
+            enabled: -1,
+            cursor: i32::MAX,
+            limit: 0,
+            filename: b"old".to_vec(),
+        };
+        assert!(advance_rotation(&mut s, b"").unwrap().is_empty());
+        assert_eq!(s.cursor, i32::MIN);
+        s.enabled = 0;
+        assert!(advance_rotation(&mut s, &[1; 4097]).unwrap().is_empty());
+        s.enabled = 1;
+        s.cursor = 1;
+        let old = s.clone();
+        assert_eq!(
+            advance_rotation(&mut s, &[1; 4097]),
+            Err(Error::BytesTooLong)
+        );
+        assert_eq!(s, old);
+    }
+}

docs/FINDINGS.md

@@ -1604,3 +1604,6 @@ RE-813–822 replaces the scoreboard decimal assumption with actual37914 executi
 
 
 **RE-868:** 192 original122230 cases execute actual strlen and recover signed counter wrapping, threshold priority and refresh→optional filename callback/clear→reset order. Engine-5 refresh writes are supplied explicitly, including empty, NUL and high-byte filenames. Actual122143/121987 callbacks and native runtime ownership remain open. [Evidence](research/QVM_ROTATION_ADVANCE.md).
+
+
+**RE-869:** Rust matches192 original rotation cases, preserving signed cursor wrap, enable/threshold gating, refreshed filename C-string handling and ordered refresh/write/clear/reset intentions. Engine refresh input is explicit; invalid refreshed data rejects before boundary mutations. Native callbacks remain unimplemented. [Evidence](research/RUST_ROTATION_ADVANCE.md).

docs/PROVISIONAL_TODO.md

@@ -1629,3 +1629,6 @@ RE-867: Rust matches128 continuous source camera/fallback/placement cases with s
 
 
 RE-868: 192 original122230 cases execute actual strlen and recover signed counter wrapping, threshold priority and refresh→optional filename callback/clear→reset order. Engine-5 refresh writes are supplied explicitly, including empty, NUL and high-byte filenames. Actual122143/121987 callbacks and native runtime ownership remain open. Full runtime completion remains open. [Evidence](research/QVM_ROTATION_ADVANCE.md).
+
+
+RE-869: Rust matches192 original rotation cases, preserving signed cursor wrap, enable/threshold gating, refreshed filename C-string handling and ordered refresh/write/clear/reset intentions. Engine refresh input is explicit; invalid refreshed data rejects before boundary mutations. Native callbacks remain unimplemented. Full runtime completion remains open. [Evidence](research/RUST_ROTATION_ADVANCE.md).

docs/RESEARCH_LEDGER.md

@@ -2041,3 +2041,8 @@ Rust matches128 continuous source camera/fallback/placement cases with shared RN
 ## 2026-10-27 — RE-868 Original rotation cursor and refreshed filename callback policy
 
 192 original122230 cases execute actual strlen and recover signed counter wrapping, threshold priority and refresh→optional filename callback/clear→reset order. Engine-5 refresh writes are supplied explicitly, including empty, NUL and high-byte filenames. Actual122143/121987 callbacks and native runtime ownership remain open. Focused `cargo xtask test-group rotation-advance` 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.
+
+
+## 2026-10-27 — RE-869 Rust refreshed rotation callback policy
+
+Rust matches192 original rotation cases, preserving signed cursor wrap, enable/threshold gating, refreshed filename C-string handling and ordered refresh/write/clear/reset intentions. Engine refresh input is explicit; invalid refreshed data rejects before boundary mutations. Native callbacks remain unimplemented. Focused `cargo xtask test-group rust-rotation-advance` passes (9 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

@@ -1666,3 +1666,6 @@ Purpose: turn the supplied installation into an evidence-backed specification of
 
 
 - [x] RE-868 Original rotation cursor and refreshed filename callback policy ([evidence](research/QVM_ROTATION_ADVANCE.md)).
+
+
+- [x] RE-869 Rust refreshed rotation callback policy ([evidence](research/RUST_ROTATION_ADVANCE.md)).

docs/research/README.md

@@ -1202,3 +1202,6 @@ The extension collector adds five focused tests for native tail calls, command-r
 
 
 [RE-868: Original rotation cursor and refreshed filename callback policy](QVM_ROTATION_ADVANCE.md).
+
+
+[RE-869: Rust refreshed rotation callback policy](RUST_ROTATION_ADVANCE.md).

docs/research/RUST_ROTATION_ADVANCE.md

@@ -0,0 +1,7 @@
+# Rust refreshed rotation callback policy
+
+RE-869. Reproduce with `python3 scripts/analyze_rust_rotation_advance.py`; focused validation: `cargo xtask test-group rust-rotation-advance`. [Machine report](rust-rotation-advance.json).
+
+Rust matches192 original rotation cases, preserving signed cursor wrap, enable/threshold gating, refreshed filename C-string handling and ordered refresh/write/clear/reset intentions. Engine refresh input is explicit; invalid refreshed data rejects before boundary mutations. Native callbacks remain unimplemented.
+
+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": 123,
+  "rust_unit_tests": 125,
   "source_report": "docs/research/qvm-health-impulse.json",
   "source_report_sha256": "625fd8064004ea6dbdf398d51d0af844d9c635ff04c0a0790886dddb6ab81e71"
 }

docs/research/rust-rotation-advance.json

@@ -0,0 +1,4075 @@
+{
+  "limits": "Rust matches192 original rotation cases, preserving signed cursor wrap, enable/threshold gating, refreshed filename C-string handling and ordered refresh/write/clear/reset intentions. Engine refresh input is explicit; invalid refreshed data rejects before boundary mutations. Native callbacks remain unimplemented.",
+  "probes": [
+    {
+      "rust": {
+        "cursor": 0,
+        "filename": "",
+        "operations": [
+          {
+            "op": "refresh"
+          },
+          {
+            "op": "reset"
+          }
+        ]
+      },
+      "source": {
+        "cursor": 0,
+        "filename": "",
+        "operations": [
+          {
+            "op": "refresh"
+          },
+          {
+            "op": "reset"
+          }
+        ]
+      }
+    },
+    {
+      "rust": {
+        "cursor": 0,
+        "filename": "626f742e636667",
+        "operations": [
+          {
+            "op": "refresh"
+          },
+          {
+            "op": "write",
+            "text": "626f742e636667"
+          },
+          {
+            "op": "clear"
+          },
+          {
+            "op": "reset"
+          }
+        ]
+      },
+      "source": {
+        "cursor": 0,
+        "filename": "626f742e636667",
+        "operations": [
+          {
+            "op": "refresh"
+          },
+          {
+            "op": "write",
+            "text": "626f742e636667"
+          },
+          {
+            "op": "clear"
+          },
+          {
+            "op": "reset"
+          }
+        ]
+      }
+    },
+    {
+      "rust": {
+        "cursor": 0,
+        "filename": "61",
+        "operations": [
+          {
+            "op": "refresh"
+          },
+          {
+            "op": "write",
+            "text": "61"
+          },
+          {
+            "op": "clear"
+          },
+          {
+            "op": "reset"
+          }
+        ]
+      },
+      "source": {
+        "cursor": 0,
+        "filename": "61",
+        "operations": [
+          {
+            "op": "refresh"
+          },
+          {
+            "op": "write",
+            "text": "61"
+          },
+          {
+            "op": "clear"
+          },
+          {
+            "op": "reset"
+          }
+        ]
+      }
+    },
+    {
+      "rust": {
+        "cursor": 0,
+        "filename": "ff",
+        "operations": [
+          {
+            "op": "refresh"
+          },
+          {
+            "op": "write",
+            "text": "ff"
+          },
+          {
+            "op": "clear"
+          },
+          {
+            "op": "reset"
+          }
+        ]
+      },
+      "source": {
+        "cursor": 0,
+        "filename": "ff",
+        "operations": [
+          {
+            "op": "refresh"
+          },
+          {
+            "op": "write",
+            "text": "ff"
+          },
+          {
+            "op": "clear"
+          },
+          {
+            "op": "reset"
+          }
+        ]
+      }
+    },
+    {
+      "rust": {
+        "cursor": 0,
+        "filename": "",
+        "operations": [
+          {
+            "op": "refresh"
+          },
+          {
+            "op": "reset"
+          }
+        ]
+      },
+      "source": {
+        "cursor": 0,
+        "filename": "",
+        "operations": [
+          {
+            "op": "refresh"
+          },
+          {
+            "op": "reset"
+          }
+        ]
+      }
+    },
+    {
+      "rust": {
+        "cursor": 0,
+        "filename": "626f742e636667",
+        "operations": [
+          {
+            "op": "refresh"
+          },
+          {
+            "op": "write",
+            "text": "626f742e636667"
+          },
+          {
+            "op": "clear"
+          },
+          {
+            "op": "reset"
+          }
+        ]
+      },
+      "source": {
+        "cursor": 0,
+        "filename": "626f742e636667",
+        "operations": [
+          {
+            "op": "refresh"
+          },
+          {
+            "op": "write",
+            "text": "626f742e636667"
+          },
+          {
+            "op": "clear"
+          },
+          {
+            "op": "reset"
+          }
+        ]
+      }
+    },
+    {
+      "rust": {
+        "cursor": 0,
+        "filename": "61",
+        "operations": [
+          {
+            "op": "refresh"
+          },
+          {
+            "op": "write",
+            "text": "61"
+          },
+          {
+            "op": "clear"
+          },
+          {
+            "op": "reset"
+          }
+        ]
+      },
+      "source": {
+        "cursor": 0,
+        "filename": "61",
+        "operations": [
+          {
+            "op": "refresh"
+          },
+          {
+            "op": "write",
+            "text": "61"
+          },
+          {
+            "op": "clear"
+          },
+          {
+            "op": "reset"
+          }
+        ]
+      }
+    },
+    {
+      "rust": {
+        "cursor": 0,
+        "filename": "ff",
+        "operations": [
+          {
+            "op": "refresh"
+          },
+          {
+            "op": "write",
+            "text": "ff"
+          },
+          {
+            "op": "clear"
+          },
+          {
+            "op": "reset"
+          }
+        ]
+      },
+      "source": {
+        "cursor": 0,
+        "filename": "ff",
+        "operations": [
+          {
+            "op": "refresh"
+          },
+          {
+            "op": "write",
+            "text": "ff"
+          },
+          {
+            "op": "clear"
+          },
+          {
+            "op": "reset"
+          }
+        ]
+      }
+    },
+    {
+      "rust": {
+        "cursor": 0,
+        "filename": "70726576696f75732e636667",
+        "operations": []
+      },
+      "source": {
+        "cursor": 0,
+        "filename": "70726576696f75732e636667",
+        "operations": []
+      }
+    },
+    {
+      "rust": {
+        "cursor": 0,
+        "filename": "70726576696f75732e636667",
+        "operations": []
+      },
+      "source": {
+        "cursor": 0,
+        "filename": "70726576696f75732e636667",
+        "operations": []
+      }
+    },
+    {
+      "rust": {
+        "cursor": 0,
+        "filename": "70726576696f75732e636667",
+        "operations": []
+      },
+      "source": {
+        "cursor": 0,
+        "filename": "70726576696f75732e636667",
+        "operations": []
+      }
+    },
+    {
+      "rust": {
+        "cursor": 0,
+        "filename": "70726576696f75732e636667",
+        "operations": []
+      },
+      "source": {
+        "cursor": 0,
+        "filename": "70726576696f75732e636667",
+        "operations": []
+      }
+    },
+    {
+      "rust": {
+        "cursor": 0,
+        "filename": "70726576696f75732e636667",
+        "operations": []
+      },
+      "source": {
+        "cursor": 0,
+        "filename": "70726576696f75732e636667",
+        "operations": []
+      }
+    },
+    {
+      "rust": {
+        "cursor": 0,
+        "filename": "70726576696f75732e636667",
+        "operations": []
+      },
+      "source": {
+        "cursor": 0,
+        "filename": "70726576696f75732e636667",
+        "operations": []
+      }
+    },
+    {
+      "rust": {
+        "cursor": 0,
+        "filename": "70726576696f75732e636667",
+        "operations": []
+      },
+      "source": {
+        "cursor": 0,
+        "filename": "70726576696f75732e636667",
+        "operations": []
+      }
+    },
+    {
+      "rust": {
+        "cursor": 0,
+        "filename": "70726576696f75732e636667",
+        "operations": []
+      },
+      "source": {
+        "cursor": 0,
+        "filename": "70726576696f75732e636667",
+        "operations": []
+      }
+    },
+    {
+      "rust": {
+        "cursor": 0,
+        "filename": "",
+        "operations": [
+          {
+            "op": "refresh"
+          },
+          {
+            "op": "reset"
+          }
+        ]
+      },
+      "source": {
+        "cursor": 0,
+        "filename": "",
+        "operations": [
+          {
+            "op": "refresh"
+          },
+          {
+            "op": "reset"
+          }
+        ]
+      }
+    },
+    {
+      "rust": {
+        "cursor": 0,
+        "filename": "626f742e636667",
+        "operations": [
+          {
+            "op": "refresh"
+          },
+          {
+            "op": "write",
+            "text": "626f742e636667"
+          },
+          {
+            "op": "clear"
+          },
+          {
+            "op": "reset"
+          }
+        ]
+      },
+      "source": {
+        "cursor": 0,
+        "filename": "626f742e636667",
+        "operations": [
+          {
+            "op": "refresh"
+          },
+          {
+            "op": "write",
+            "text": "626f742e636667"
+          },
+          {
+            "op": "clear"
+          },
+          {
+            "op": "reset"
+          }
+        ]
+      }
+    },
+    {
+      "rust": {
+        "cursor": 0,
+        "filename": "61",
+        "operations": [
+          {
+            "op": "refresh"
+          },
+          {
+            "op": "write",
+            "text": "61"
+          },
+          {
+            "op": "clear"
+          },
+          {
+            "op": "reset"
+          }
+        ]
+      },
+      "source": {
+        "cursor": 0,
+        "filename": "61",
+        "operations": [
+          {
+            "op": "refresh"
+          },
+          {
+            "op": "write",
+            "text": "61"
+          },
+          {
+            "op": "clear"
+          },
+          {
+            "op": "reset"
+          }
+        ]
+      }
+    },
+    {
+      "rust": {
+        "cursor": 0,
+        "filename": "ff",
+        "operations": [
+          {
+            "op": "refresh"
+          },
+          {
+            "op": "write",
+            "text": "ff"
+          },
+          {
+            "op": "clear"
+          },
+          {
+            "op": "reset"
+          }
+        ]
+      },
+      "source": {
+        "cursor": 0,
+        "filename": "ff",
+        "operations": [
+          {
+            "op": "refresh"
+          },
+          {
+            "op": "write",
+            "text": "ff"
+          },
+          {
+            "op": "clear"
+          },
+          {
+            "op": "reset"
+          }
+        ]
+      }
+    },
+    {
+      "rust": {
+        "cursor": 0,
+        "filename": "",
+        "operations": [
+          {
+            "op": "refresh"
+          },
+          {
+            "op": "reset"
+          }
+        ]
+      },
+      "source": {
+        "cursor": 0,
+        "filename": "",
+        "operations": [
+          {
+            "op": "refresh"
+          },
+          {
+            "op": "reset"
+          }
+        ]
+      }
+    },
+    {
+      "rust": {
+        "cursor": 0,
+        "filename": "626f742e636667",
+        "operations": [
+          {
+            "op": "refresh"
+          },
+          {
+            "op": "write",
+            "text": "626f742e636667"
+          },
+          {
+            "op": "clear"
+          },
+          {
+            "op": "reset"
+          }
+        ]
+      },
+      "source": {
+        "cursor": 0,
+        "filename": "626f742e636667",
+        "operations": [
+          {
+            "op": "refresh"
+          },
+          {
+            "op": "write",
+            "text": "626f742e636667"
+          },
+          {
+            "op": "clear"
+          },
+          {
+            "op": "reset"
+          }
+        ]
+      }
+    },
+    {
+      "rust": {
+        "cursor": 0,
+        "filename": "61",
+        "operations": [
+          {
+            "op": "refresh"
+          },
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+          {
+            "op": "reset"
+          }
+        ]
+      },
+      "source": {
+        "cursor": 0,
+        "filename": "61",
+        "operations": [
+          {
+            "op": "refresh"
+          },
+          {
+            "op": "write",
+            "text": "61"
+          },
+          {
+            "op": "clear"
+          },
+          {
+            "op": "reset"
+          }
+        ]
+      }
+    },
+    {
+      "rust": {
+        "cursor": 0,
+        "filename": "ff",
+        "operations": [
+          {
+            "op": "refresh"
+          },
+          {
+            "op": "write",
+            "text": "ff"
+          },
+          {
+            "op": "clear"
+          },
+          {
+            "op": "reset"
+          }
+        ]
+      },
+      "source": {
+        "cursor": 0,
+        "filename": "ff",
+        "operations": [
+          {
+            "op": "refresh"
+          },
+          {
+            "op": "write",
+            "text": "ff"
+          },
+          {
+            "op": "clear"
+          },
+          {
+            "op": "reset"
+          }
+        ]
+      }
+    },
+    {
+      "rust": {
+        "cursor": 0,
+        "filename": "",
+        "operations": [
+          {
+            "op": "refresh"
+          },
+          {
+            "op": "reset"
+          }
+        ]
+      },
+      "source": {
+        "cursor": 0,
+        "filename": "",
+        "operations": [
+          {
+            "op": "refresh"
+          },
+          {
+            "op": "reset"
+          }
+        ]
+      }
+    },
+    {
+      "rust": {
+        "cursor": 0,
+        "filename": "626f742e636667",
+        "operations": [
+          {
+            "op": "refresh"
+          },
+          {
+            "op": "write",
+            "text": "626f742e636667"
+          },
+          {
+            "op": "clear"
+          },
+          {
+            "op": "reset"
+          }
+        ]
+      },
+      "source": {
+        "cursor": 0,
+        "filename": "626f742e636667",
+        "operations": [
+          {
+            "op": "refresh"
+          },
+          {
+            "op": "write",
+            "text": "626f742e636667"
+          },
+          {
+            "op": "clear"
+          },
+          {
+            "op": "reset"
+          }
+        ]
+      }
+    },
+    {
+      "rust": {
+        "cursor": 0,
+        "filename": "61",
+        "operations": [
+          {
+            "op": "refresh"
+          },
+          {
+            "op": "write",
+            "text": "61"
+          },
+          {
+            "op": "clear"
+          },
+          {
+            "op": "reset"
+          }
+        ]
+      },
+      "source": {
+        "cursor": 0,
+        "filename": "61",
+        "operations": [
+          {
+            "op": "refresh"
+          },
+          {
+            "op": "write",
+            "text": "61"
+          },
+          {
+            "op": "clear"
+          },
+          {
+            "op": "reset"
+          }
+        ]
+      }
+    },
+    {
+      "rust": {
+        "cursor": 0,
+        "filename": "ff",
+        "operations": [
+          {
+            "op": "refresh"
+          },
+          {
+            "op": "write",
+            "text": "ff"
+          },
+          {
+            "op": "clear"
+          },
+          {
+            "op": "reset"
+          }
+        ]
+      },
+      "source": {
+        "cursor": 0,
+        "filename": "ff",
+        "operations": [
+          {
+            "op": "refresh"
+          },
+          {
+            "op": "write",
+            "text": "ff"
+          },
+          {
+            "op": "clear"
+          },
+          {
+            "op": "reset"
+          }
+        ]
+      }
+    },
+    {
+      "rust": {
+        "cursor": 2147483648,
+        "filename": "70726576696f75732e636667",
+        "operations": []
+      },
+      "source": {
+        "cursor": 2147483648,
+        "filename": "70726576696f75732e636667",
+        "operations": []
+      }
+    },
+    {
+      "rust": {
+        "cursor": 2147483648,
+        "filename": "70726576696f75732e636667",
+        "operations": []
+      },
+      "source": {
+        "cursor": 2147483648,
+        "filename": "70726576696f75732e636667",
+        "operations": []
+      }
+    },
+    {
+      "rust": {
+        "cursor": 2147483648,
+        "filename": "70726576696f75732e636667",
+        "operations": []
+      },
+      "source": {
+        "cursor": 2147483648,
+        "filename": "70726576696f75732e636667",
+        "operations": []
+      }
+    },
+    {
+      "rust": {
+        "cursor": 2147483648,
+        "filename": "70726576696f75732e636667",
+        "operations": []
+      },
+      "source": {
+        "cursor": 2147483648,
+        "filename": "70726576696f75732e636667",
+        "operations": []
+      }
+    },
+    {
+      "rust": {
+        "cursor": 2147483648,
+        "filename": "70726576696f75732e636667",
+        "operations": []
+      },
+      "source": {
+        "cursor": 2147483648,
+        "filename": "70726576696f75732e636667",
+        "operations": []
+      }
+    },
+    {
+      "rust": {
+        "cursor": 2147483648,
+        "filename": "70726576696f75732e636667",
+        "operations": []
+      },
+      "source": {
+        "cursor": 2147483648,
+        "filename": "70726576696f75732e636667",
+        "operations": []
+      }
+    },
+    {
+      "rust": {
+        "cursor": 2147483648,
+        "filename": "70726576696f75732e636667",
+        "operations": []
+      },
+      "source": {
+        "cursor": 2147483648,
+        "filename": "70726576696f75732e636667",
+        "operations": []
+      }
+    },
+    {
+      "rust": {
+        "cursor": 2147483648,
+        "filename": "70726576696f75732e636667",
+        "operations": []
+      },
+      "source": {
+        "cursor": 2147483648,
+        "filename": "70726576696f75732e636667",
+        "operations": []
+      }
+    },
+    {
+      "rust": {
+        "cursor": 2147483648,
+        "filename": "70726576696f75732e636667",
+        "operations": []
+      },
+      "source": {
+        "cursor": 2147483648,
+        "filename": "70726576696f75732e636667",
+        "operations": []
+      }
+    },
+    {
+      "rust": {
+        "cursor": 2147483648,
+        "filename": "70726576696f75732e636667",
+        "operations": []
+      },
+      "source": {
+        "cursor": 2147483648,
+        "filename": "70726576696f75732e636667",
+        "operations": []
+      }
+    },
+    {
+      "rust": {
+        "cursor": 2147483648,
+        "filename": "70726576696f75732e636667",
+        "operations": []
+      },
+      "source": {
+        "cursor": 2147483648,
+        "filename": "70726576696f75732e636667",
+        "operations": []
+      }
+    },
+    {
+      "rust": {
+        "cursor": 2147483648,
+        "filename": "70726576696f75732e636667",
+        "operations": []
+      },
+      "source": {
+        "cursor": 2147483648,
+        "filename": "70726576696f75732e636667",
+        "operations": []
+      }
+    },
+    {
+      "rust": {
+        "cursor": 2147483648,
+        "filename": "70726576696f75732e636667",
+        "operations": []
+      },
+      "source": {
+        "cursor": 2147483648,
+        "filename": "70726576696f75732e636667",
+        "operations": []
+      }
+    },
+    {
+      "rust": {
+        "cursor": 2147483648,
+        "filename": "70726576696f75732e636667",
+        "operations": []
+      },
+      "source": {
+        "cursor": 2147483648,
+        "filename": "70726576696f75732e636667",
+        "operations": []
+      }
+    },
+    {
+      "rust": {
+        "cursor": 2147483648,
+        "filename": "70726576696f75732e636667",
+        "operations": []
+      },
+      "source": {
+        "cursor": 2147483648,
+        "filename": "70726576696f75732e636667",
+        "operations": []
+      }
+    },
+    {
+      "rust": {
+        "cursor": 2147483648,
+        "filename": "70726576696f75732e636667",
+        "operations": []
+      },
+      "source": {
+        "cursor": 2147483648,
+        "filename": "70726576696f75732e636667",
+        "operations": []
+      }
+    }
+  ],
+  "source_report": "docs/research/qvm-rotation-advance.json",
+  "source_report_sha256": "0a5e40f066aad3389b8dadb3327da24d3388cc62adf22f5dbd2f843f24ffdbeb"
+}

scripts/analyze_rust_rotation_advance.py

@@ -0,0 +1,14 @@
+#!/usr/bin/env python3
+import hashlib,json
+from pathlib import Path
+from rust_map_commands_support import binary,result,invoke
+from analyze_qvm import write_json
+from rust_map_commands_support import blob
+def encode(s):
+ a=s['input'];return [a['enabled'],a['cursor'],a['limit'],*blob(a['updated'])]
+def project(s):return {k:s[k] for k in ['cursor','filename','operations']}
+def main():
+ b=binary();p=Path('docs/research/qvm-rotation-advance.json');data=p.read_bytes();rows=[]
+ for s in json.loads(data)['probes']:rows.append({'source':project(s),'rust':result(b,'rotation',encode(s))})
+ write_json(Path('docs/research/rust-rotation-advance.json'),{'source_report':str(p),'source_report_sha256':hashlib.sha256(data).hexdigest(),'probes':rows,'limits':'Rust matches192 original rotation cases, preserving signed cursor wrap, enable/threshold gating, refreshed filename C-string handling and ordered refresh/write/clear/reset intentions. Engine refresh input is explicit; invalid refreshed data rejects before boundary mutations. Native callbacks remain unimplemented.'})
+if __name__=='__main__':main()

scripts/rust_map_commands_support.py

@@ -0,0 +1,9 @@
+"""Build the scoped map-command Rust adapter using the declared toolchain."""
+import os,subprocess
+from pathlib import Path
+from rust_lifecycle_support import result,invoke
+def binary():
+ subprocess.run(['cargo','build','--offline','--package','urt-gameplay','--bin','urt-map-commands'],capture_output=True,text=True,check=True)
+ return Path(os.environ.get('CARGO_TARGET_DIR','target'))/'debug'/'urt-map-commands'
+def blob(s):
+ data=bytes.fromhex(s);return [len(data),*data]

scripts/test_rust_rotation_advance.py

@@ -0,0 +1,9 @@
+import hashlib,json,unittest
+from pathlib import Path
+class PortTests(unittest.TestCase):
+ def test_all_original_cases(self):
+  r=json.loads(Path('docs/research/rust-rotation-advance.json').read_text());src=json.loads(Path(r['source_report']).read_text());self.assertEqual(len(r['probes']),len(src['probes']));self.assertGreater(len(r['probes']),20)
+  for p in r['probes']:self.assertEqual(p['rust'],p['source'])
+ def test_source_identity(self):
+  r=json.loads(Path('docs/research/rust-rotation-advance.json').read_text());self.assertEqual(hashlib.sha256(Path(r['source_report']).read_bytes()).hexdigest(),r['source_report_sha256'])
+if __name__=='__main__':unittest.main()

xtask/checks.tsv

@@ -2465,3 +2465,18 @@ edge	docs/research/qvm-rotation-advance.json	scripts/test_qvm_rotation_advance.p
 group	rotation-advance	scripts/analyze_qvm_rotation_advance.py
 edge	scripts/analyze_qvm_rotation_advance.py	scripts/analyze_qvm_resumer_audit.py
 edge	scripts/qvm_map_commands_support.py	scripts/analyze_qvm_resumer_audit.py
+edge	Cargo.toml	scripts/analyze_rust_rotation_advance.py
+edge	Cargo.lock	scripts/analyze_rust_rotation_advance.py
+edge	crates/urt-gameplay/Cargo.toml	scripts/analyze_rust_rotation_advance.py
+edge	crates/urt-gameplay/src/lib.rs	scripts/analyze_rust_rotation_advance.py
+edge	crates/urt-gameplay/src/map_commands.rs	scripts/analyze_rust_rotation_advance.py
+edge	crates/urt-gameplay/src/bin/urt-map-commands.rs	scripts/analyze_rust_rotation_advance.py
+edge	docs/research/qvm-rotation-advance.json	scripts/analyze_rust_rotation_advance.py
+edge	crates/urt-gameplay/src/map_commands.rs	scripts/analyze_rust_health_impulse.py
+group	rust-rotation-advance	scripts/analyze_rust_health_impulse.py
+group	gameplay	scripts/analyze_rust_rotation_advance.py
+report	scripts/analyze_rust_rotation_advance.py	docs/research/rust-rotation-advance.json
+edge	docs/research/rust-rotation-advance.json	scripts/test_rust_rotation_advance.py
+group	rust-rotation-advance	scripts/analyze_rust_rotation_advance.py
+edge	scripts/analyze_rust_rotation_advance.py	scripts/analyze_qvm_resumer_audit.py
+edge	scripts/rust_map_commands_support.py	scripts/analyze_qvm_resumer_audit.py