diff --git a/crates/zesdex-backend/src/app/mode/learning.rs b/crates/zesdex-backend/src/app/mode/learning.rs
index b0a09ca..f4c2c44 100644
--- a/crates/zesdex-backend/src/app/mode/learning.rs
+++ b/crates/zesdex-backend/src/app/mode/learning.rs
@@ -1,4 +1,5 @@
 use crate::app::state::rest::AppStateRest;
+use zesdex_cms::domain::repository::MemoryRepository;
 
 /// A unified representation of a lesson item for the interactive TUI overlay.
 #[derive(Debug, Clone)]
@@ -53,9 +54,9 @@ pub fn get_learning_items(state: &AppStateRest) -> Vec<LearningItem> {
     }
 
     // 2. Load stored memory lessons from long-term memory directory
-    let names = crate::model::memory::Memory::list(&state.memory_dir);
+    let names = zesdex_cms::infrastructure::persistence::memory_repo::MarkdownMemoryRepository::new().list(&state.memory_dir).unwrap_or_default();
     for name in names {
-        if let Ok(mem) = crate::model::memory::Memory::read(&state.memory_dir, &name) {
+        if let Ok(mem) = zesdex_cms::infrastructure::persistence::memory_repo::MarkdownMemoryRepository::new().load(&state.memory_dir, &name) {
             if mem.kind == "lesson" {
                 items.push(LearningItem::Stored {
                     name: mem.name,
diff --git a/crates/zesdex-backend/src/app/review/mod.rs b/crates/zesdex-backend/src/app/review/mod.rs
index dfb9e19..10f7b61 100644
--- a/crates/zesdex-backend/src/app/review/mod.rs
+++ b/crates/zesdex-backend/src/app/review/mod.rs
@@ -9,6 +9,9 @@ use crate::app::subagent::context::build_subagent_context;
 use crate::app::subagent::engine::run_subagent;
 use crate::app::subagent::spawn::AgentDefinition;
 use serde::{Deserialize, Serialize};
+use zesdex_cms::domain::memory::Memory;
+use zesdex_cms::domain::repository::MemoryRepository;
+use zesdex_cms::infrastructure::persistence::memory_repo::MarkdownMemoryRepository;
 
 /// How much trust a lesson's origin/verification warrants.
 #[derive(Debug, Clone, Serialize, Deserialize, PartialEq)]
@@ -484,14 +487,15 @@ const STALE_AFTER_DAYS: i64 = 60;
 /// `mem.write`.
 pub fn run_staleness_sweep(memory_dir: &std::path::Path) -> std::io::Result<Vec<String>> {
     let mut flagged = Vec::new();
-    let names = crate::model::memory::Memory::list(memory_dir);
+    let names = MarkdownMemoryRepository::new().list(memory_dir).unwrap_or_default();
     let now = chrono::Utc::now().timestamp_millis();
     let cutoff = now - STALE_AFTER_DAYS * 24 * 3600 * 1000;
     for name in names {
-        if let Ok(mut mem) = crate::model::memory::Memory::read(memory_dir, &name) {
+        if let Ok(mut mem) = MarkdownMemoryRepository::new().load(memory_dir, &name) {
             if mem.updated_at < cutoff && mem.lifecycle != "stale" {
                 mem.lifecycle = "stale".to_string();
-                mem.write(memory_dir)?;
+                MarkdownMemoryRepository::new().save(memory_dir, &mem)
+                    .map_err(|e| std::io::Error::new(std::io::ErrorKind::Other, e.to_string()))?;
                 flagged.push(name);
             }
         }
@@ -581,7 +585,7 @@ pub fn process_pending_lessons(session_dir: &std::path::Path, memory_dir: &std::
         }
     }
     for lesson in &to_keep {
-        let mem = crate::model::memory::Memory {
+        let mem = Memory {
             name: lesson.name.clone(),
             description: lesson.content.chars().take(80).collect(),
             content: lesson.content.clone(),
@@ -595,7 +599,8 @@ pub fn process_pending_lessons(session_dir: &std::path::Path, memory_dir: &std::
             after_snippet: None,
             provenances: vec![],
         };
-        mem.write(memory_dir)?;
+        MarkdownMemoryRepository::new().save(memory_dir, &mem)
+            .map_err(|e| std::io::Error::new(std::io::ErrorKind::Other, e.to_string()))?;
     }
 
     save_pending_lessons(session_dir, &remaining)?;
@@ -625,7 +630,7 @@ pub fn resolve_pending_lesson(
     for p in pending {
         if p.lesson.name == lesson_name {
             if keep {
-                let mem = crate::model::memory::Memory {
+                let mem = Memory {
                     name: p.lesson.name.clone(),
                     description: p.lesson.content.chars().take(80).collect(),
                     content: p.lesson.content.clone(),
@@ -639,7 +644,8 @@ pub fn resolve_pending_lesson(
                     after_snippet: None,
                     provenances: vec![],
                 };
-                mem.write(memory_dir)?;
+                MarkdownMemoryRepository::new().save(memory_dir, &mem)
+                    .map_err(|e| std::io::Error::new(std::io::ErrorKind::Other, e.to_string()))?;
             }
         } else {
             remaining.push(p);
diff --git a/crates/zesdex-backend/src/app/runtime/actions/mod.rs b/crates/zesdex-backend/src/app/runtime/actions/mod.rs
index cc91bb0..757c87d 100644
--- a/crates/zesdex-backend/src/app/runtime/actions/mod.rs
+++ b/crates/zesdex-backend/src/app/runtime/actions/mod.rs
@@ -29,6 +29,8 @@ use crate::app::state::rest::{AppStateRest, ChatMessageDisplay};
 use crate::app::state::runtime::TurnEvent;
 use crate::app::state::types::{Origin, Overlay, Toast, ToastKind};
 use crate::dto::chat::message::{ChatMessage, Role};
+use zesdex_cms::domain::repository::MemoryRepository;
+use zesdex_cms::infrastructure::persistence::memory_repo::MarkdownMemoryRepository;
 
 /// A single, well-typed event in the app — produced by key input, the
 /// streaming pipeline, or subagent threads — that mutates `AppStateRest`
@@ -589,7 +591,7 @@ pub fn apply_action(state: &mut AppStateRest, action: Action) {
             state.dirty = true;
         }
         Action::LessonDelete { name } => {
-            let _ = crate::model::memory::Memory::remove(&state.memory_dir, &name);
+            let _ = MarkdownMemoryRepository::new().delete(&state.memory_dir, &name);
             if let Some(ref mut rt) = state.session_runtime {
                 refresh_lesson_counters(&state.memory_dir, rt);
             }
@@ -795,7 +797,7 @@ fn generate_workspace_tree(roots: &[std::path::PathBuf]) -> String {
 ///
 /// Return: a formatted string (may be empty if no memory entries exist).
 fn build_memory_section(memory_dir: &std::path::Path) -> String {
-    let names = crate::model::memory::Memory::list(memory_dir);
+    let names = MarkdownMemoryRepository::new().list(memory_dir).unwrap_or_default();
     if names.is_empty() {
         return String::new();
     }
@@ -808,7 +810,7 @@ fn build_memory_section(memory_dir: &std::path::Path) -> String {
             section.push_str("... (more entries omitted, use recall() to see all)\n");
             break;
         }
-        if let Ok(mem) = crate::model::memory::Memory::read(memory_dir, name) {
+        if let Ok(mem) = MarkdownMemoryRepository::new().load(memory_dir, name) {
             if mem.lifecycle == "stale" {
                 continue;
             }
@@ -831,7 +833,7 @@ fn build_memory_section(memory_dir: &std::path::Path) -> String {
 /// breakdown counters. This runs on every user submit so the dashboard
 /// reflects actual memory state.
 fn refresh_lesson_counters(memory_dir: &std::path::Path, rt: &mut crate::app::state::runtime::SessionRuntime) {
-    let names = crate::model::memory::Memory::list(memory_dir);
+    let names = MarkdownMemoryRepository::new().list(memory_dir).unwrap_or_default();
     rt.lesson_count = 0;
     rt.lessons_user = 0;
     rt.lessons_feedback = 0;
@@ -841,7 +843,7 @@ fn refresh_lesson_counters(memory_dir: &std::path::Path, rt: &mut crate::app::st
     rt.lessons_stale = 0;
     rt.lessons_contradicted = 0;
     for name in &names {
-        if let Ok(mem) = crate::model::memory::Memory::read(memory_dir, name) {
+        if let Ok(mem) = MarkdownMemoryRepository::new().load(memory_dir, name) {
             rt.lesson_count += 1;
             match mem.kind.as_str() {
                 "user" => rt.lessons_user += 1,
diff --git a/crates/zesdex-backend/src/app/workflow/docs.rs b/crates/zesdex-backend/src/app/workflow/docs.rs
index 5340e31..11b1b3d 100644
--- a/crates/zesdex-backend/src/app/workflow/docs.rs
+++ b/crates/zesdex-backend/src/app/workflow/docs.rs
@@ -7,7 +7,7 @@
 //! Core Intelligence can omit or reshape — and always runs after any
 //! hive-mind convergence completes.
 use crate::app::workflow::hive_mind::NodeReport;
-use crate::model::memory::Memory;
+use zesdex_cms::domain::memory::Memory;
 use std::fmt::Write as _;
 use std::path::{Path, PathBuf};
 
diff --git a/crates/zesdex-backend/src/model/mod.rs b/crates/zesdex-backend/src/model/mod.rs
index 5e252ec..dacbf0e 100644
--- a/crates/zesdex-backend/src/model/mod.rs
+++ b/crates/zesdex-backend/src/model/mod.rs
@@ -8,9 +8,6 @@ pub mod store {
 pub mod editlog {
     pub use zesdex_entities::seaorm::common::edit_log::*;
 }
-pub mod memory {
-    pub use zesdex_entities::seaorm::common::memory::*;
-}
 /// Local modules not extracted to workspace crates
 pub mod msglog;
 pub mod agent_def;
diff --git a/crates/zesdex-backend/src/tool/memory/forget.rs b/crates/zesdex-backend/src/tool/memory/forget.rs
index 3f36a73..45375c9 100644
--- a/crates/zesdex-backend/src/tool/memory/forget.rs
+++ b/crates/zesdex-backend/src/tool/memory/forget.rs
@@ -1,7 +1,8 @@
 //! Tool for deleting a persisted memory entry by name.
 use super::super::Tool;
 use super::super::ToolCtx;
-use crate::model::memory::Memory;
+use zesdex_cms::domain::repository::MemoryRepository;
+use zesdex_cms::infrastructure::persistence::memory_repo::MarkdownMemoryRepository;
 use anyhow::{anyhow, Result};
 use serde_json::{json, Value};
 
@@ -42,7 +43,7 @@ impl Tool for Forget {
             .and_then(|v| v.as_str())
             .ok_or_else(|| anyhow!("missing required argument: name"))?;
 
-        Memory::remove(&ctx.memory_dir, name)
+        MarkdownMemoryRepository::new().delete(&ctx.memory_dir, name)
             .map_err(|e| anyhow!("failed to remove memory '{name}': {e}"))?;
 
         Ok(format!("removed memory '{name}'"))
diff --git a/crates/zesdex-backend/src/tool/memory/recall.rs b/crates/zesdex-backend/src/tool/memory/recall.rs
index 0871b18..e50b4e2 100644
--- a/crates/zesdex-backend/src/tool/memory/recall.rs
+++ b/crates/zesdex-backend/src/tool/memory/recall.rs
@@ -1,7 +1,8 @@
 //! Tool for reading a single memory entry or listing the whole memory index.
 use super::super::Tool;
 use super::super::ToolCtx;
-use crate::model::memory::Memory;
+use zesdex_cms::domain::repository::MemoryRepository;
+use zesdex_cms::infrastructure::persistence::memory_repo::MarkdownMemoryRepository;
 use anyhow::{anyhow, Result};
 use serde_json::{json, Value};
 use std::fmt::Write;
@@ -41,7 +42,7 @@ impl Tool for Recall {
             if name.is_empty() {
                 return Ok(list_all(ctx));
             }
-            let memory = Memory::read(&ctx.memory_dir, name)
+            let memory = MarkdownMemoryRepository::new().load(&ctx.memory_dir, name)
                 .map_err(|e| anyhow!("memory '{name}' not found: {e}"))?;
             Ok(format!(
                 "---\nname: {}\ndescription: {}\nkind: {}\nlifecycle: {}\n---\n\n{}",
@@ -60,13 +61,13 @@ impl Tool for Recall {
 ///
 /// Return: `Ok` with the formatted index (never fails; missing dir yields "(no memory entries)").
 fn list_all(ctx: &ToolCtx) -> String {
-    let names = Memory::list(&ctx.memory_dir);
+    let names = MarkdownMemoryRepository::new().list(&ctx.memory_dir).unwrap_or_default();
     if names.is_empty() {
         return "(no memory entries)".to_string();
     }
     let mut lines = String::new();
     for name in &names {
-        if let Ok(mem) = Memory::read(&ctx.memory_dir, name) {
+        if let Ok(mem) = MarkdownMemoryRepository::new().load(&ctx.memory_dir, name) {
             let _ = writeln!(lines, "- {} [{}]: {}", name, mem.kind, mem.description);
         } else {
             let _ = writeln!(lines, "- {name}");
diff --git a/crates/zesdex-backend/src/tool/memory/remember.rs b/crates/zesdex-backend/src/tool/memory/remember.rs
index 948c7c2..e01e4c4 100644
--- a/crates/zesdex-backend/src/tool/memory/remember.rs
+++ b/crates/zesdex-backend/src/tool/memory/remember.rs
@@ -1,7 +1,9 @@
 //! Tool for saving a new memory entry to persistent project memory.
 use super::super::Tool;
 use super::super::ToolCtx;
-use crate::model::memory::Memory;
+use zesdex_cms::domain::memory::Memory;
+use zesdex_cms::domain::repository::MemoryRepository;
+use zesdex_cms::infrastructure::persistence::memory_repo::MarkdownMemoryRepository;
 use anyhow::{anyhow, Result};
 use serde_json::{json, Value};
 
@@ -91,9 +93,8 @@ impl Tool for Remember {
             provenances: vec![],
         };
 
-        memory
-            .write(&ctx.memory_dir)
-            .map_err(|e| anyhow!("failed to write memory '{name}': {e}"))?;
+        MarkdownMemoryRepository::new().save(&ctx.memory_dir, &memory)
+            .map_err(|e| anyhow!("failed to save memory '{name}': {e}"))?;
 
         Ok(format!("saved memory '{name}' ({kind})"))
     }