diff --git a/src-tauri/Cargo.lock b/src-tauri/Cargo.lock
index 9bb00c99..4fb24cc8 100644
--- a/src-tauri/Cargo.lock
+++ b/src-tauri/Cargo.lock
@@ -656,13 +656,34 @@ dependencies = [
  "crypto-common",
 ]
 
+[[package]]
+name = "dirs"
+version = "5.0.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "44c45a9d03d6676652bcb5e724c7e988de1acad23a711b5217ab9cbecbec2225"
+dependencies = [
+ "dirs-sys 0.4.1",
+]
+
 [[package]]
 name = "dirs"
 version = "6.0.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "c3e8aa94d75141228480295a7d0e7feb620b1a5ad9f12bc40be62411e38cce4e"
 dependencies = [
- "dirs-sys",
+ "dirs-sys 0.5.0",
+]
+
+[[package]]
+name = "dirs-sys"
+version = "0.4.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "520f05a5cbd335fae5a99ff7a6ab8627577660ee5cfd6a94a6a929b52ff0321c"
+dependencies = [
+ "libc",
+ "option-ext",
+ "redox_users 0.4.6",
+ "windows-sys 0.48.0",
 ]
 
 [[package]]
@@ -673,7 +694,7 @@ checksum = "e01a3366d27ee9890022452ee61b2b63a67e6f13f58900b651ff5665f0bb1fab"
 dependencies = [
  "libc",
  "option-ext",
- "redox_users",
+ "redox_users 0.5.2",
  "windows-sys 0.61.2",
 ]
 
@@ -1879,6 +1900,7 @@ version = "0.1.0"
 dependencies = [
  "base64 0.22.1",
  "chrono",
+ "dirs 5.0.1",
  "futures-util",
  "gray_matter",
  "log",
@@ -2944,6 +2966,17 @@ dependencies = [
  "bitflags 2.11.0",
 ]
 
+[[package]]
+name = "redox_users"
+version = "0.4.6"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "ba009ff324d1fc1b900bd1fdb31564febe58a8ccc8a6fdbb93b543d33b13ca43"
+dependencies = [
+ "getrandom 0.2.17",
+ "libredox",
+ "thiserror 1.0.69",
+]
+
 [[package]]
 name = "redox_users"
 version = "0.5.2"
@@ -3831,7 +3864,7 @@ dependencies = [
  "anyhow",
  "bytes",
  "cookie",
- "dirs",
+ "dirs 6.0.0",
  "dunce",
  "embed_plist",
  "getrandom 0.3.4",
@@ -3882,7 +3915,7 @@ checksum = "ca7bd893329425df750813e95bd2b643d5369d929438da96d5bbb7cc2c918f74"
 dependencies = [
  "anyhow",
  "cargo_toml",
- "dirs",
+ "dirs 6.0.0",
  "glob",
  "heck 0.5.0",
  "json-patch",
@@ -4434,7 +4467,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "a5e85aa143ceb072062fc4d6356c1b520a51d636e7bc8e77ec94be3608e5e80c"
 dependencies = [
  "crossbeam-channel",
- "dirs",
+ "dirs 6.0.0",
  "libappindicator",
  "muda",
  "objc2",
@@ -5094,6 +5127,15 @@ dependencies = [
  "windows-targets 0.42.2",
 ]
 
+[[package]]
+name = "windows-sys"
+version = "0.48.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "677d2418bec65e3338edb076e806bc1ec15693c5d0104683f2efe857f61056a9"
+dependencies = [
+ "windows-targets 0.48.5",
+]
+
 [[package]]
 name = "windows-sys"
 version = "0.52.0"
@@ -5145,6 +5187,21 @@ dependencies = [
  "windows_x86_64_msvc 0.42.2",
 ]
 
+[[package]]
+name = "windows-targets"
+version = "0.48.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "9a2fa6e2155d7247be68c096456083145c183cbbbc2764150dda45a87197940c"
+dependencies = [
+ "windows_aarch64_gnullvm 0.48.5",
+ "windows_aarch64_msvc 0.48.5",
+ "windows_i686_gnu 0.48.5",
+ "windows_i686_msvc 0.48.5",
+ "windows_x86_64_gnu 0.48.5",
+ "windows_x86_64_gnullvm 0.48.5",
+ "windows_x86_64_msvc 0.48.5",
+]
+
 [[package]]
 name = "windows-targets"
 version = "0.52.6"
@@ -5202,6 +5259,12 @@ version = "0.42.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "597a5118570b68bc08d8d59125332c54f1ba9d9adeedeef5b99b02ba2b0698f8"
 
+[[package]]
+name = "windows_aarch64_gnullvm"
+version = "0.48.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "2b38e32f0abccf9987a4e3079dfb67dcd799fb61361e53e2882c3cbaf0d905d8"
+
 [[package]]
 name = "windows_aarch64_gnullvm"
 version = "0.52.6"
@@ -5220,6 +5283,12 @@ version = "0.42.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "e08e8864a60f06ef0d0ff4ba04124db8b0fb3be5776a5cd47641e942e58c4d43"
 
+[[package]]
+name = "windows_aarch64_msvc"
+version = "0.48.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "dc35310971f3b2dbbf3f0690a219f40e2d9afcf64f9ab7cc1be722937c26b4bc"
+
 [[package]]
 name = "windows_aarch64_msvc"
 version = "0.52.6"
@@ -5238,6 +5307,12 @@ version = "0.42.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "c61d927d8da41da96a81f029489353e68739737d3beca43145c8afec9a31a84f"
 
+[[package]]
+name = "windows_i686_gnu"
+version = "0.48.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "a75915e7def60c94dcef72200b9a8e58e5091744960da64ec734a6c6e9b3743e"
+
 [[package]]
 name = "windows_i686_gnu"
 version = "0.52.6"
@@ -5268,6 +5343,12 @@ version = "0.42.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "44d840b6ec649f480a41c8d80f9c65108b92d89345dd94027bfe06ac444d1060"
 
+[[package]]
+name = "windows_i686_msvc"
+version = "0.48.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "8f55c233f70c4b27f66c523580f78f1004e8b5a8b659e05a4eb49d4166cca406"
+
 [[package]]
 name = "windows_i686_msvc"
 version = "0.52.6"
@@ -5286,6 +5367,12 @@ version = "0.42.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "8de912b8b8feb55c064867cf047dda097f92d51efad5b491dfb98f6bbb70cb36"
 
+[[package]]
+name = "windows_x86_64_gnu"
+version = "0.48.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "53d40abd2583d23e4718fddf1ebec84dbff8381c07cae67ff7768bbf19c6718e"
+
 [[package]]
 name = "windows_x86_64_gnu"
 version = "0.52.6"
@@ -5304,6 +5391,12 @@ version = "0.42.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "26d41b46a36d453748aedef1486d5c7a85db22e56aff34643984ea85514e94a3"
 
+[[package]]
+name = "windows_x86_64_gnullvm"
+version = "0.48.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "0b7b52767868a23d5bab768e390dc5f5c55825b6d30b86c844ff2dc7414044cc"
+
 [[package]]
 name = "windows_x86_64_gnullvm"
 version = "0.52.6"
@@ -5322,6 +5415,12 @@ version = "0.42.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "9aec5da331524158c6d1a4ac0ab1541149c0b9505fde06423b02f5ef0106b9f0"
 
+[[package]]
+name = "windows_x86_64_msvc"
+version = "0.48.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "ed94fce61571a4006852b7389a063ab983c02eb1bb37b47f8272ce92d06d9538"
+
 [[package]]
 name = "windows_x86_64_msvc"
 version = "0.52.6"
@@ -5466,7 +5565,7 @@ dependencies = [
  "block2",
  "cookie",
  "crossbeam-channel",
- "dirs",
+ "dirs 6.0.0",
  "dpi",
  "dunce",
  "gdkx11",
diff --git a/src-tauri/Cargo.toml b/src-tauri/Cargo.toml
index b16138c7..efcb16e1 100644
--- a/src-tauri/Cargo.toml
+++ b/src-tauri/Cargo.toml
@@ -28,6 +28,7 @@ reqwest = { version = "0.12", features = ["json", "stream"] }
 tokio = { version = "1", features = ["rt-multi-thread", "macros"] }
 futures-util = "0.3"
 base64 = "0.22"
+dirs = "5"
 
 [dev-dependencies]
 tempfile = "3"
diff --git a/src-tauri/src/lib.rs b/src-tauri/src/lib.rs
index 9e2e4f3d..54164800 100644
--- a/src-tauri/src/lib.rs
+++ b/src-tauri/src/lib.rs
@@ -63,6 +63,11 @@ fn save_image(vault_path: String, filename: String, data: String) -> Result<Stri
     vault::save_image(&vault_path, &filename, &data)
 }
 
+#[tauri::command]
+fn purge_trash(vault_path: String) -> Result<Vec<String>, String> {
+    vault::purge_trash(&vault_path)
+}
+
 #[cfg_attr(mobile, tauri::mobile_entry_point)]
 pub fn run() {
     tauri::Builder::default()
@@ -74,6 +79,23 @@ pub fn run() {
                         .build(),
                 )?;
             }
+
+            // Purge trashed files older than 30 days on startup
+            let vault_path = dirs::home_dir()
+                .map(|h| h.join("Laputa"))
+                .unwrap_or_default();
+            if vault_path.is_dir() {
+                match vault::purge_trash(vault_path.to_str().unwrap_or_default()) {
+                    Ok(deleted) if !deleted.is_empty() => {
+                        log::info!("Purged {} trashed files on startup", deleted.len());
+                    }
+                    Err(e) => {
+                        log::warn!("Failed to purge trash on startup: {}", e);
+                    }
+                    _ => {}
+                }
+            }
+
             Ok(())
         })
         .invoke_handler(tauri::generate_handler![
@@ -87,7 +109,8 @@ pub fn run() {
             git_commit,
             git_push,
             ai_chat,
-            save_image
+            save_image,
+            purge_trash
         ])
         .run(tauri::generate_context!())
         .expect("error while running tauri application");
diff --git a/src-tauri/src/vault.rs b/src-tauri/src/vault.rs
index 4d571bbd..5005e98f 100644
--- a/src-tauri/src/vault.rs
+++ b/src-tauri/src/vault.rs
@@ -425,6 +425,80 @@ fn pod_to_json(pod: gray_matter::Pod) -> serde_json::Value {
     }
 }
 
+/// Scan all markdown files in the vault and delete those where
+/// `Trashed at` frontmatter is more than 30 days ago.
+/// Returns the list of deleted file paths.
+pub fn purge_trash(vault_path: &str) -> Result<Vec<String>, String> {
+    use chrono::{NaiveDate, Utc};
+
+    let vault = Path::new(vault_path);
+    if !vault.exists() || !vault.is_dir() {
+        return Err(format!(
+            "Vault path does not exist or is not a directory: {}",
+            vault_path
+        ));
+    }
+
+    let today = Utc::now().date_naive();
+    let matter = Matter::<YAML>::new();
+    let mut deleted = Vec::new();
+
+    for entry in WalkDir::new(vault)
+        .follow_links(true)
+        .into_iter()
+        .filter_map(|e| e.ok())
+    {
+        let path = entry.path();
+        if !path.is_file()
+            || path
+                .extension()
+                .map(|ext| ext != "md")
+                .unwrap_or(true)
+        {
+            continue;
+        }
+
+        let content = match fs::read_to_string(path) {
+            Ok(c) => c,
+            Err(_) => continue,
+        };
+
+        let parsed = matter.parse(&content);
+        let trashed_at_str = match parsed.data {
+            Some(gray_matter::Pod::Hash(ref map)) => map
+                .get("Trashed at")
+                .or_else(|| map.get("trashed_at"))
+                .and_then(|v| match v {
+                    gray_matter::Pod::String(s) => Some(s.clone()),
+                    _ => None,
+                }),
+            _ => None,
+        };
+
+        if let Some(date_str) = trashed_at_str {
+            let trimmed = date_str.trim().trim_matches('"');
+            // Support both "2026-01-01" and "2026-01-01T..." formats
+            let date_part = trimmed.split('T').next().unwrap_or(trimmed);
+            if let Ok(trashed_date) = NaiveDate::parse_from_str(date_part, "%Y-%m-%d") {
+                let age = today.signed_duration_since(trashed_date);
+                if age.num_days() > 30 {
+                    match fs::remove_file(path) {
+                        Ok(()) => {
+                            log::info!("Purged trashed file: {}", path.display());
+                            deleted.push(path.to_string_lossy().to_string());
+                        }
+                        Err(e) => {
+                            log::warn!("Failed to delete {}: {}", path.display(), e);
+                        }
+                    }
+                }
+            }
+        }
+    }
+
+    Ok(deleted)
+}
+
 /// Read the content of a single note file.
 pub fn get_note_content(path: &str) -> Result<String, String> {
     let file_path = Path::new(path);
@@ -1585,4 +1659,116 @@ References:
         assert!(result.is_err());
         assert!(result.unwrap_err().contains("Invalid base64"));
     }
+
+    // --- purge_trash tests ---
+
+    #[test]
+    fn test_purge_trash_deletes_old_trashed_files() {
+        let dir = TempDir::new().unwrap();
+        // File trashed 60 days ago — should be deleted
+        create_test_file(
+            dir.path(),
+            "old-trash.md",
+            "---\nTrashed at: \"2025-01-01\"\n---\n# Old Trash\n",
+        );
+        // File trashed recently — should be kept
+        let recent = chrono::Utc::now().date_naive().format("%Y-%m-%d").to_string();
+        create_test_file(
+            dir.path(),
+            "recent-trash.md",
+            &format!("---\nTrashed at: \"{}\"\n---\n# Recent Trash\n", recent),
+        );
+        // File without trashed_at — should be kept
+        create_test_file(
+            dir.path(),
+            "normal.md",
+            "---\nIs A: Note\n---\n# Normal Note\n",
+        );
+
+        let deleted = purge_trash(dir.path().to_str().unwrap()).unwrap();
+        assert_eq!(deleted.len(), 1);
+        assert!(deleted[0].contains("old-trash.md"));
+        // Verify old file is actually gone
+        assert!(!dir.path().join("old-trash.md").exists());
+        // Verify other files still exist
+        assert!(dir.path().join("recent-trash.md").exists());
+        assert!(dir.path().join("normal.md").exists());
+    }
+
+    #[test]
+    fn test_purge_trash_supports_datetime_format() {
+        let dir = TempDir::new().unwrap();
+        create_test_file(
+            dir.path(),
+            "datetime-trash.md",
+            "---\nTrashed at: \"2025-01-01T10:30:00Z\"\n---\n# Datetime Trash\n",
+        );
+
+        let deleted = purge_trash(dir.path().to_str().unwrap()).unwrap();
+        assert_eq!(deleted.len(), 1);
+        assert!(deleted[0].contains("datetime-trash.md"));
+    }
+
+    #[test]
+    fn test_purge_trash_empty_vault() {
+        let dir = TempDir::new().unwrap();
+        let deleted = purge_trash(dir.path().to_str().unwrap()).unwrap();
+        assert!(deleted.is_empty());
+    }
+
+    #[test]
+    fn test_purge_trash_nonexistent_path() {
+        let result = purge_trash("/nonexistent/path/that/does/not/exist");
+        assert!(result.is_err());
+    }
+
+    #[test]
+    fn test_purge_trash_exactly_30_days_not_deleted() {
+        let dir = TempDir::new().unwrap();
+        let thirty_days_ago = (chrono::Utc::now().date_naive()
+            - chrono::Duration::days(30))
+            .format("%Y-%m-%d")
+            .to_string();
+        create_test_file(
+            dir.path(),
+            "borderline.md",
+            &format!("---\nTrashed at: \"{}\"\n---\n# Borderline\n", thirty_days_ago),
+        );
+
+        let deleted = purge_trash(dir.path().to_str().unwrap()).unwrap();
+        assert!(deleted.is_empty());
+        assert!(dir.path().join("borderline.md").exists());
+    }
+
+    #[test]
+    fn test_purge_trash_31_days_deleted() {
+        let dir = TempDir::new().unwrap();
+        let thirty_one_days_ago = (chrono::Utc::now().date_naive()
+            - chrono::Duration::days(31))
+            .format("%Y-%m-%d")
+            .to_string();
+        create_test_file(
+            dir.path(),
+            "expired.md",
+            &format!("---\nTrashed at: \"{}\"\n---\n# Expired\n", thirty_one_days_ago),
+        );
+
+        let deleted = purge_trash(dir.path().to_str().unwrap()).unwrap();
+        assert_eq!(deleted.len(), 1);
+        assert!(!dir.path().join("expired.md").exists());
+    }
+
+    #[test]
+    fn test_purge_trash_nested_directories() {
+        let dir = TempDir::new().unwrap();
+        create_test_file(
+            dir.path(),
+            "sub/deep/old.md",
+            "---\nTrashed at: \"2025-01-01\"\n---\n# Deep Old\n",
+        );
+
+        let deleted = purge_trash(dir.path().to_str().unwrap()).unwrap();
+        assert_eq!(deleted.len(), 1);
+        assert!(deleted[0].contains("old.md"));
+    }
 }