diff --git a/Cargo.lock b/Cargo.lock
index ad75baa..9e767db 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -37,17 +37,6 @@ dependencies = [
  "subtle",
 ]
 
-[[package]]
-name = "ahash"
-version = "0.7.8"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "891477e0c6a8957309ee5c45a6368af3ae14bb510732d2684ffa19af310920f9"
-dependencies = [
- "getrandom 0.2.17",
- "once_cell",
- "version_check",
-]
-
 [[package]]
 name = "ahash"
 version = "0.8.12"
@@ -195,12 +184,6 @@ version = "0.8.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "5e764a1d40d510daf35e07be9eb06e75770908c27d411ee6c92109c9840eaaf7"
 
-[[package]]
-name = "bitflags"
-version = "1.3.2"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "bef38d45163c2f1dde094a7dfd33ccf595c92905c8f8f4fdc18d06fb1037718a"
-
 [[package]]
 name = "bitflags"
 version = "2.13.2"
@@ -369,18 +352,21 @@ dependencies = [
 
 [[package]]
 name = "cultcache-rs"
-version = "0.2.0"
-source = "git+https://github.com/GameCult/CultLib.git?rev=8fc74c709444b884a2bd339e0c306bf9484d99d2#8fc74c709444b884a2bd339e0c306bf9484d99d2"
+version = "0.3.1"
+source = "git+https://github.com/GameCult/CultLib.git?rev=75188fdefa0b4baf131dbfd94e77d06a965f0cc6#75188fdefa0b4baf131dbfd94e77d06a965f0cc6"
 dependencies = [
  "anyhow",
  "chrono",
- "cultcache-rs-derive 0.1.0",
+ "cultcache-rs-derive 0.2.0 (git+https://github.com/GameCult/CultLib.git?rev=75188fdefa0b4baf131dbfd94e77d06a965f0cc6)",
  "fs2",
  "redb",
  "rmp-serde",
  "serde",
  "serde_bytes",
  "serde_json",
+ "serde_stacker",
+ "sha2",
+ "stacker",
  "uuid",
  "windows-sys 0.59.0",
 ]
@@ -392,7 +378,7 @@ source = "git+https://github.com/GameCult/CultLib.git?rev=a4eae9056152335662f111
 dependencies = [
  "anyhow",
  "chrono",
- "cultcache-rs-derive 0.2.0",
+ "cultcache-rs-derive 0.2.0 (git+https://github.com/GameCult/CultLib.git?rev=a4eae9056152335662f1115f97bf35fb00ab6d23)",
  "fs2",
  "redb",
  "rmp-serde",
@@ -407,8 +393,8 @@ dependencies = [
 
 [[package]]
 name = "cultcache-rs-derive"
-version = "0.1.0"
-source = "git+https://github.com/GameCult/CultLib.git?rev=8fc74c709444b884a2bd339e0c306bf9484d99d2#8fc74c709444b884a2bd339e0c306bf9484d99d2"
+version = "0.2.0"
+source = "git+https://github.com/GameCult/CultLib.git?rev=75188fdefa0b4baf131dbfd94e77d06a965f0cc6#75188fdefa0b4baf131dbfd94e77d06a965f0cc6"
 dependencies = [
  "proc-macro2",
  "quote",
@@ -427,18 +413,17 @@ dependencies = [
 
 [[package]]
 name = "cultnet-rs"
-version = "0.1.0"
-source = "git+https://github.com/GameCult/CultLib.git?rev=8fc74c709444b884a2bd339e0c306bf9484d99d2#8fc74c709444b884a2bd339e0c306bf9484d99d2"
+version = "0.2.0"
+source = "git+https://github.com/GameCult/CultLib.git?rev=a4eae9056152335662f1115f97bf35fb00ab6d23#a4eae9056152335662f1115f97bf35fb00ab6d23"
 dependencies = [
  "aes-gcm",
  "anyhow",
  "base64",
  "chrono",
- "cultcache-rs 0.2.0",
+ "cultcache-rs 0.3.1 (git+https://github.com/GameCult/CultLib.git?rev=a4eae9056152335662f1115f97bf35fb00ab6d23)",
  "ed25519-dalek",
  "hmac",
  "rand",
- "reed-solomon-erasure",
  "rmp-serde",
  "rmpv",
  "serde",
@@ -453,16 +438,18 @@ dependencies = [
 
 [[package]]
 name = "cultnet-rs"
-version = "0.2.0"
-source = "git+https://github.com/GameCult/CultLib.git?rev=a4eae9056152335662f1115f97bf35fb00ab6d23#a4eae9056152335662f1115f97bf35fb00ab6d23"
+version = "0.3.0"
+source = "git+https://github.com/GameCult/CultLib.git?rev=75188fdefa0b4baf131dbfd94e77d06a965f0cc6#75188fdefa0b4baf131dbfd94e77d06a965f0cc6"
 dependencies = [
  "aes-gcm",
  "anyhow",
  "base64",
  "chrono",
- "cultcache-rs 0.3.1",
+ "cultcache-rs 0.3.1 (git+https://github.com/GameCult/CultLib.git?rev=75188fdefa0b4baf131dbfd94e77d06a965f0cc6)",
  "ed25519-dalek",
+ "fs2",
  "hmac",
+ "libc",
  "rand",
  "rmp-serde",
  "rmpv",
@@ -625,7 +612,7 @@ version = "0.1.0"
 dependencies = [
  "anyhow",
  "chrono",
- "cultcache-rs 0.2.0",
+ "cultcache-rs 0.3.1 (git+https://github.com/GameCult/CultLib.git?rev=75188fdefa0b4baf131dbfd94e77d06a965f0cc6)",
  "rmp-serde",
  "schemars",
  "serde",
@@ -639,7 +626,7 @@ dependencies = [
  "anyhow",
  "chrono",
  "clap",
- "cultnet-rs 0.1.0",
+ "cultnet-rs 0.3.0",
  "huginn-daemon",
  "huginn-mind",
  "rmcp",
@@ -874,15 +861,6 @@ dependencies = [
  "unicode-segmentation",
 ]
 
-[[package]]
-name = "hashbrown"
-version = "0.12.3"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "8a9ee70c43aaf417c914396645a0fa852624801b24ebb7ae78fe8272889ac888"
-dependencies = [
- "ahash 0.7.8",
-]
-
 [[package]]
 name = "hashbrown"
 version = "0.17.1"
@@ -932,7 +910,7 @@ dependencies = [
  "anyhow",
  "base64",
  "chrono",
- "cultnet-rs 0.1.0",
+ "cultnet-rs 0.3.0",
  "huginn-mind",
  "rmp-serde",
  "rustix",
@@ -951,8 +929,8 @@ dependencies = [
  "anyhow",
  "base64",
  "chrono",
- "cultcache-rs 0.2.0",
- "cultnet-rs 0.1.0",
+ "cultcache-rs 0.3.1 (git+https://github.com/GameCult/CultLib.git?rev=75188fdefa0b4baf131dbfd94e77d06a965f0cc6)",
+ "cultnet-rs 0.3.0",
  "eureka-pipeline",
  "jsonschema",
  "rmp-serde",
@@ -1004,15 +982,6 @@ dependencies = [
  "generic-array",
 ]
 
-[[package]]
-name = "instant"
-version = "0.1.13"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "e0242819d153cba4b4b05a5a8f2a7e9bbf97b6055b2a002b395c96b5ff3c0222"
-dependencies = [
- "cfg-if",
-]
-
 [[package]]
 name = "is_terminal_polyfill"
 version = "1.70.2"
@@ -1042,7 +1011,7 @@ version = "0.58.6"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "f622c574a29fb3034a0a90645afee194dfedc75fc124228801b6e77041075bd1"
 dependencies = [
- "ahash 0.8.12",
+ "ahash",
  "bytecount",
  "data-encoding",
  "email_address",
@@ -1079,7 +1048,7 @@ version = "0.58.6"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "39b7670345e5ce87371339d13705dbb9276b7e3e934bbe1efa2c6734a1f65a96"
 dependencies = [
- "ahash 0.8.12",
+ "ahash",
  "bytecount",
  "fraction",
  "getrandom 0.3.4",
@@ -1095,12 +1064,6 @@ version = "0.2.189"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "3eaf3ede3fee6db1a4c2ee091bf8a8b4dccdc6d17f656fb07896ee72867612f2"
 
-[[package]]
-name = "libm"
-version = "0.2.16"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "b6d2cec3eae94f9f509c767b45932f1ada8350c4bdb85af2fcab4a3c14807981"
-
 [[package]]
 name = "linux-raw-sys"
 version = "0.12.1"
@@ -1122,15 +1085,6 @@ version = "0.4.34"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "f9f8bd3e56ce4dfc153cf470fffbfa98c7620958b312ca5c3a4b8d5181fd13c6"
 
-[[package]]
-name = "lru"
-version = "0.7.8"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "e999beba7b6e8345721bd280141ed958096a2e4abdf74f67ff4ce49b4b54e47a"
-dependencies = [
- "hashbrown 0.12.3",
-]
-
 [[package]]
 name = "memchr"
 version = "2.8.3"
@@ -1150,8 +1104,8 @@ dependencies = [
  "anyhow",
  "base64",
  "chrono",
- "cultcache-rs 0.2.0",
- "cultnet-rs 0.1.0",
+ "cultcache-rs 0.3.1 (git+https://github.com/GameCult/CultLib.git?rev=75188fdefa0b4baf131dbfd94e77d06a965f0cc6)",
+ "cultnet-rs 0.3.0",
  "eureka-pipeline",
  "eureka-state",
  "ghostlight-persona-projection",
@@ -1179,7 +1133,7 @@ source = "git+https://eureka.gamecult.org/forge/GameCult/ModelConnector.git?rev=
 dependencies = [
  "aes-gcm",
  "base64",
- "cultcache-rs 0.3.1",
+ "cultcache-rs 0.3.1 (git+https://github.com/GameCult/CultLib.git?rev=a4eae9056152335662f1115f97bf35fb00ab6d23)",
  "cultnet-rs 0.2.0",
  "rand_core 0.6.4",
  "rmp-serde",
@@ -1304,17 +1258,6 @@ version = "0.5.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "1a80800c0488c3a21695ea981a54918fbb37abf04f4d0720c453632255e2ff0e"
 
-[[package]]
-name = "parking_lot"
-version = "0.11.2"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "7d17b78036a60663b797adeaee46f5c9dfebb86948d1255007a1d6be0271ff99"
-dependencies = [
- "instant",
- "lock_api",
- "parking_lot_core 0.8.6",
-]
-
 [[package]]
 name = "parking_lot"
 version = "0.12.5"
@@ -1322,21 +1265,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "93857453250e3077bd71ff98b6a65ea6621a19bb0f559a85248955ac12c45a1a"
 dependencies = [
  "lock_api",
- "parking_lot_core 0.9.12",
-]
-
-[[package]]
-name = "parking_lot_core"
-version = "0.8.6"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "60a2cfe6f0ad2bfc16aefa463b497d5c7a5ecd44a23efa72aa342d90177356dc"
-dependencies = [
- "cfg-if",
- "instant",
- "libc",
- "redox_syscall 0.2.16",
- "smallvec",
- "winapi",
+ "parking_lot_core",
 ]
 
 [[package]]
@@ -1347,7 +1276,7 @@ checksum = "2621685985a2ebf1c516881c026032ac7deafcda1a2c9b7850dc81e3dfcb64c1"
 dependencies = [
  "cfg-if",
  "libc",
- "redox_syscall 0.5.18",
+ "redox_syscall",
  "smallvec",
  "windows-link",
 ]
@@ -1488,35 +1417,13 @@ dependencies = [
  "libc",
 ]
 
-[[package]]
-name = "redox_syscall"
-version = "0.2.16"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "fb5a58c1855b4b6819d59012155603f0b22ad30cad752600aadfcb695265519a"
-dependencies = [
- "bitflags 1.3.2",
-]
-
 [[package]]
 name = "redox_syscall"
 version = "0.5.18"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "ed2bf2547551a7053d6fdfafda3f938979645c44812fbfcda098faae3f1a362d"
 dependencies = [
- "bitflags 2.13.2",
-]
-
-[[package]]
-name = "reed-solomon-erasure"
-version = "6.0.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "7263373d500d4d4f505d43a2a662d475a894aa94503a1ee28e9188b5f3960d4f"
-dependencies = [
- "libm",
- "lru",
- "parking_lot 0.11.2",
- "smallvec",
- "spin",
+ "bitflags",
 ]
 
 [[package]]
@@ -1545,13 +1452,13 @@ version = "0.58.6"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "558f3855529c0a7e78a48e409fa653456e55f1b167eab4109c16a255b7727e3f"
 dependencies = [
- "ahash 0.8.12",
+ "ahash",
  "fluent-uri",
  "getrandom 0.3.4",
- "hashbrown 0.17.1",
+ "hashbrown",
  "itoa",
  "micromap",
- "parking_lot 0.12.5",
+ "parking_lot",
  "percent-encoding",
  "serde_json",
 ]
@@ -1664,7 +1571,7 @@ version = "1.1.4"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "b6fe4565b9518b83ef4f91bb47ce29620ca828bd32cb7e408f0062e9930ba190"
 dependencies = [
- "bitflags 2.13.2",
+ "bitflags",
  "errno",
  "libc",
  "linux-raw-sys",
@@ -1875,12 +1782,6 @@ dependencies = [
  "windows-sys 0.52.0",
 ]
 
-[[package]]
-name = "spin"
-version = "0.9.9"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "3763264f6b73151db08c50ff20d7d8a0b8796e021cdea7ceedad07b80155fa0e"
-
 [[package]]
 name = "spki"
 version = "0.7.3"
diff --git a/Cargo.toml b/Cargo.toml
index 58edea6..3f12cfb 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -16,5 +16,5 @@ publish = false
 # The one CultLib revision the workspace speaks. Every crate inherits these
 # entries; a bump is a change to this table and nowhere else.
 [workspace.dependencies]
-cultcache-rs = { git = "https://github.com/GameCult/CultLib.git", rev = "8fc74c709444b884a2bd339e0c306bf9484d99d2", package = "cultcache-rs" }
-cultnet-rs = { git = "https://github.com/GameCult/CultLib.git", rev = "8fc74c709444b884a2bd339e0c306bf9484d99d2", package = "cultnet-rs" }
+cultcache-rs = { git = "https://github.com/GameCult/CultLib.git", rev = "75188fdefa0b4baf131dbfd94e77d06a965f0cc6", package = "cultcache-rs" }
+cultnet-rs = { git = "https://github.com/GameCult/CultLib.git", rev = "75188fdefa0b4baf131dbfd94e77d06a965f0cc6", package = "cultnet-rs" }
diff --git a/crates/huginn-mind/src/read_tests.rs b/crates/huginn-mind/src/read_tests.rs
index aa14861..4ce4493 100644
--- a/crates/huginn-mind/src/read_tests.rs
+++ b/crates/huginn-mind/src/read_tests.rs
@@ -330,13 +330,13 @@ impl CacheBackingStore for LandsThenFails {
     fn pull_all(&self) -> Result<Vec<CultCacheEnvelope>> {
         self.inner.pull_all()
     }
-    fn push(&mut self, entry: &CultCacheEnvelope) -> Result<()> {
+    fn push(&mut self, entry: &CultCacheEnvelope) -> Result<String> {
         self.inner.push(entry)
     }
     fn delete(&mut self, entry: &CultCacheEnvelope) -> Result<()> {
         self.inner.delete(entry)
     }
-    fn push_all(&mut self, entries: &[CultCacheEnvelope], options: PushAllOptions) -> Result<()> {
+    fn push_all(&mut self, entries: &[CultCacheEnvelope], options: PushAllOptions) -> Result<Vec<String>> {
         self.inner.push_all(entries, options)
     }
 }
@@ -547,13 +547,13 @@ impl CacheBackingStore for FailsTheLook {
         }
         self.inner.pull_all()
     }
-    fn push(&mut self, entry: &CultCacheEnvelope) -> Result<()> {
+    fn push(&mut self, entry: &CultCacheEnvelope) -> Result<String> {
         self.inner.push(entry)
     }
     fn delete(&mut self, entry: &CultCacheEnvelope) -> Result<()> {
         self.inner.delete(entry)
     }
-    fn push_all(&mut self, entries: &[CultCacheEnvelope], options: PushAllOptions) -> Result<()> {
+    fn push_all(&mut self, entries: &[CultCacheEnvelope], options: PushAllOptions) -> Result<Vec<String>> {
         self.inner.push_all(entries, options)
     }
 }
diff --git a/crates/huginn-mind/src/receipt.rs b/crates/huginn-mind/src/receipt.rs
index 2ffa3a8..7946dfb 100644
--- a/crates/huginn-mind/src/receipt.rs
+++ b/crates/huginn-mind/src/receipt.rs
@@ -374,7 +374,7 @@ mod tests {
             self.inner.pull_all()
         }
 
-        fn push(&mut self, entry: &CultCacheEnvelope) -> anyhow::Result<()> {
+        fn push(&mut self, entry: &CultCacheEnvelope) -> anyhow::Result<String> {
             self.inner.push(entry)
         }
 
@@ -382,7 +382,7 @@ mod tests {
             self.inner.delete(entry)
         }
 
-        fn push_all(&mut self, entries: &[CultCacheEnvelope], options: PushAllOptions) -> anyhow::Result<()> {
+        fn push_all(&mut self, entries: &[CultCacheEnvelope], options: PushAllOptions) -> anyhow::Result<Vec<String>> {
             self.inner.push_all(entries, options)
         }
     }
diff --git a/crates/huginn-mind/src/store.rs b/crates/huginn-mind/src/store.rs
index 7ed8cc9..a30f18d 100644
--- a/crates/huginn-mind/src/store.rs
+++ b/crates/huginn-mind/src/store.rs
@@ -116,9 +116,9 @@ pub(crate) mod test_stores {
             Ok(self.rows())
         }
 
-        fn push(&mut self, entry: &CultCacheEnvelope) -> Result<()> {
+        fn push(&mut self, entry: &CultCacheEnvelope) -> Result<String> {
             self.plant(entry.clone());
-            Ok(())
+            Ok(entry.stored_at.clone())
         }
 
         fn delete(&mut self, entry: &CultCacheEnvelope) -> Result<()> {
@@ -126,9 +126,9 @@ pub(crate) mod test_stores {
             Ok(())
         }
 
-        fn push_all(&mut self, entries: &[CultCacheEnvelope], _options: PushAllOptions) -> Result<()> {
+        fn push_all(&mut self, entries: &[CultCacheEnvelope], _options: PushAllOptions) -> Result<Vec<String>> {
             *self.rows.lock().unwrap() = entries.iter().map(|entry| (identity(entry), entry.clone())).collect();
-            Ok(())
+            Ok(entries.iter().map(|entry| entry.stored_at.clone()).collect())
         }
     }
 
@@ -199,7 +199,7 @@ pub(crate) mod test_stores {
             self.inner.pull_all()
         }
 
-        fn push(&mut self, entry: &CultCacheEnvelope) -> Result<()> {
+        fn push(&mut self, entry: &CultCacheEnvelope) -> Result<String> {
             self.inner.push(entry)
         }
 
@@ -207,7 +207,7 @@ pub(crate) mod test_stores {
             self.inner.delete(entry)
         }
 
-        fn push_all(&mut self, entries: &[CultCacheEnvelope], options: PushAllOptions) -> Result<()> {
+        fn push_all(&mut self, entries: &[CultCacheEnvelope], options: PushAllOptions) -> Result<Vec<String>> {
             self.inner.push_all(entries, options)
         }
     }
diff --git a/crates/mind-body/src/control/tests.rs b/crates/mind-body/src/control/tests.rs
index eee43a8..845ccd5 100644
--- a/crates/mind-body/src/control/tests.rs
+++ b/crates/mind-body/src/control/tests.rs
@@ -62,6 +62,7 @@ fn a_brake_payload_that_does_not_decode_makes_the_store_undecodable() {
     let mut cache = CultCache::new();
     cache.register_entry_type::<WrongBrake>().unwrap();
     cache.add_generic_backing_store(SingleFileMessagePackBackingStore::new(&path)).unwrap();
+    cache.pull_all_backing_stores().unwrap();
     cache.put(BRAKE_KEY, &WrongBrake { released: "yes".into() }).unwrap();
     assert_eq!(effective(&path), held(HeldReason::Undecodable));
 }
diff --git a/crates/mind-body/src/heartbeat.rs b/crates/mind-body/src/heartbeat.rs
index 3f6155b..8871650 100644
--- a/crates/mind-body/src/heartbeat.rs
+++ b/crates/mind-body/src/heartbeat.rs
@@ -309,6 +309,10 @@ impl FileStore {
         let mut cache = Self::registered()?;
         cache.add_generic_backing_store(SingleFileMessagePackBackingStore::new(&self.path))?;
         cache.pull_all_backing_stores().with_context(|| self.refusal())?;
+        // A pull now carries a record no registered type claims instead of refusing it; the writer still must not write beside one.
+        if !cache.foreign_records().is_empty() {
+            return Err(anyhow!(self.refusal()));
+        }
         Ok(cache)
     }
 
diff --git a/crates/mind-body/tests/control.rs b/crates/mind-body/tests/control.rs
index 07a34fc..e2d2e51 100644
--- a/crates/mind-body/tests/control.rs
+++ b/crates/mind-body/tests/control.rs
@@ -187,7 +187,12 @@ mod unsafe_installs {
         std::fs::create_dir(&instance).unwrap();
         for (name, mode) in [("control.cc.lock", lock_mode), ("control.cc", store_mode)] {
             if let Some(mode) = mode {
-                std::fs::write(instance.join(name), b"").unwrap();
+                if name == "control.cc" {
+                    // A store is a store the runtime reads: CultCache refuses a zero-byte file, as it refuses any file it cannot read.
+                    ControlWriter::open(instance.join(name)).unwrap().set_brake(false, at(0), "fixture").unwrap();
+                } else {
+                    std::fs::write(instance.join(name), b"").unwrap();
+                }
                 chmod(&instance.join(name), mode);
             }
         }