diff --git a/Cargo.lock b/Cargo.lock
index 7d17cb9..2c3b879 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -356,9 +356,9 @@ dependencies = [
 
 [[package]]
 name = "cc"
-version = "1.2.17"
+version = "1.2.18"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "1fcb57c740ae1daf453ae85f16e37396f672b039e00d9d866e07ddb24e328e3a"
+checksum = "525046617d8376e3db1deffb079e91cef90a89fc3ca5c185bbf8c9ecdd15cd5c"
 dependencies = [
  "jobserver",
  "libc",
@@ -501,9 +501,9 @@ dependencies = [
 
 [[package]]
 name = "deranged"
-version = "0.4.1"
+version = "0.4.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "28cfac68e08048ae1883171632c2aef3ebc555621ae56fbccce1cbf22dd7f058"
+checksum = "9c9e6a11ca8224451684bc0d7d5a7adbf8f2fd6887261a1cfc3c0432f9d4068e"
 dependencies = [
  "powerfmt",
 ]
@@ -580,9 +580,9 @@ checksum = "877a4ace8713b0bcf2a4e7eec82529c029f1d0619886d18145fea96c3ffe5c0f"
 
 [[package]]
 name = "errno"
-version = "0.3.10"
+version = "0.3.11"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "33d852cb9b869c2a9b3df2f71a3074817f01e1844f839a144f5fcef059a4eb5d"
+checksum = "976dd42dc7e85965fe702eb8164f21f450704bdde31faefd6471dba214cb594e"
 dependencies = [
  "libc",
  "windows-sys 0.59.0",
@@ -613,9 +613,9 @@ checksum = "37909eebbb50d72f9059c3b6d82c0463f2ff062c9e95845c43a6c9c0355411be"
 
 [[package]]
 name = "flate2"
-version = "1.1.0"
+version = "1.1.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "11faaf5a5236997af9848be0bef4db95824b1d534ebc64d0f0c6cf3e67bd38dc"
+checksum = "7ced92e76e966ca2fd84c8f7aa01a4aea65b0eb6648d72f7c8f3e2764a67fece"
 dependencies = [
  "crc32fast",
  "miniz_oxide",
@@ -1027,9 +1027,9 @@ dependencies = [
 
 [[package]]
 name = "hyper-util"
-version = "0.1.10"
+version = "0.1.11"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "df2dcfbe0677734ab2f3ffa7fa7bfd4706bfdc1ef393f2ee30184aed67e631b4"
+checksum = "497bbc33a26fdd4af9ed9c70d63f61cf56a938375fbb32df34db9b1cd6d643f2"
 dependencies = [
  "bytes",
  "futures-channel",
@@ -1037,6 +1037,7 @@ dependencies = [
  "http 1.3.1",
  "http-body 1.0.1",
  "hyper",
+ "libc",
  "pin-project-lite",
  "socket2",
  "tokio",
@@ -1046,9 +1047,9 @@ dependencies = [
 
 [[package]]
 name = "iana-time-zone"
-version = "0.1.62"
+version = "0.1.63"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "b2fd658b06e56721792c5df4475705b6cda790e9298d19d2f8af083457bcd127"
+checksum = "b0c919e5debc312ad217002b8048a17b7d83f80703865bbfcfebb0458b0b27d8"
 dependencies = [
  "android_system_properties",
  "core-foundation-sys",
@@ -1209,9 +1210,9 @@ dependencies = [
 
 [[package]]
 name = "indexmap"
-version = "2.8.0"
+version = "2.9.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "3954d50fe15b02142bf25d3b8bdadb634ec3948f103d04ffe3031bc8fe9d7058"
+checksum = "cea70ddb795996207ad57735b50c5982d8844f38ba9ee5f1aedcfb708a2aa11e"
 dependencies = [
  "equivalent",
  "hashbrown 0.15.2",
@@ -1307,9 +1308,9 @@ dependencies = [
 
 [[package]]
 name = "linux-raw-sys"
-version = "0.9.3"
+version = "0.9.4"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "fe7db12097d22ec582439daf8618b8fdd1a7bef6270e9af3b1ebcd30893cf413"
+checksum = "cd945864f07fe9f5371a27ad7b52a172b4b499999f1d97574c9fa68373937e12"
 
 [[package]]
 name = "litemap"
@@ -1415,9 +1416,9 @@ checksum = "68354c5c6bd36d73ff3feceb05efa59b6acb7626617f4962be322a825e61f79a"
 
 [[package]]
 name = "miniz_oxide"
-version = "0.8.5"
+version = "0.8.8"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "8e3e04debbb59698c15bacbb6d93584a8c0ca9cc3213cb423d31f760d8843ce5"
+checksum = "3be647b768db090acb35d5ec5db2b0e1f1de11133ca123b9eacf5137868f892a"
 dependencies = [
  "adler2",
 ]
@@ -1594,9 +1595,9 @@ checksum = "42f5e15c9953c5e4ccceeb2e7382a716482c34515315f7b03532b8b4e8393d2d"
 
 [[package]]
 name = "openssl"
-version = "0.10.71"
+version = "0.10.72"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "5e14130c6a98cd258fdcb0fb6d744152343ff729cbfcb28c656a9d12b999fbcd"
+checksum = "fedfea7d58a1f73118430a55da6a286e7b044961736ce96a16a17068ea25e5da"
 dependencies = [
  "bitflags",
  "cfg-if",
@@ -1625,13 +1626,23 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "d05e27ee213611ffe7d6348b942e8f942b37114c00cc03cec254295a4a17852e"
 
 [[package]]
-name = "openssl-sys"
-version = "0.9.106"
+name = "openssl-src"
+version = "300.5.0+3.5.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "8bb61ea9811cc39e3c2069f40b8b8e2e70d8569b361f879786cc7ed48b777cdd"
+checksum = "e8ce546f549326b0e6052b649198487d91320875da901e7bd11a06d1ee3f9c2f"
+dependencies = [
+ "cc",
+]
+
+[[package]]
+name = "openssl-sys"
+version = "0.9.107"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "8288979acd84749c744a9014b4382d42b8f7b2592847b5afb2ed29e5d16ede07"
 dependencies = [
  "cc",
  "libc",
+ "openssl-src",
  "pkg-config",
  "vcpkg",
 ]
@@ -1662,6 +1673,7 @@ dependencies = [
  "jsonwebtoken",
  "mime_guess",
  "mockall",
+ "openssl",
  "pin-project-lite",
  "quick-xml",
  "rand",
@@ -1925,9 +1937,9 @@ dependencies = [
 
 [[package]]
 name = "redox_syscall"
-version = "0.5.10"
+version = "0.5.11"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "0b8c0c260b63a8219631167be35e6a988e9554dbd323f8bd08439c8ed1302bd1"
+checksum = "d2f103c6d277498fbceb16e84d317e2a400f160f46904d5f5410848c829511a3"
 dependencies = [
  "bitflags",
 ]
@@ -2063,9 +2075,9 @@ checksum = "719b953e2095829ee67db738b3bfa9fa368c94900df327b3f07fe6e794d2fe1f"
 
 [[package]]
 name = "rustix"
-version = "1.0.3"
+version = "1.0.5"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "e56a18552996ac8d29ecc3b190b4fdbb2d91ca4ec396de7bbffaf43f3d637e96"
+checksum = "d97817398dd4bb2e6da002002db259209759911da105da92bec29ccb12cf58bf"
 dependencies = [
  "bitflags",
  "errno",
@@ -2342,9 +2354,9 @@ dependencies = [
 
 [[package]]
 name = "smallvec"
-version = "1.14.0"
+version = "1.15.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "7fcf8323ef1faaee30a44a340193b1ac6814fd9b7b4e88e9d4519a3e4abe1cfd"
+checksum = "8917285742e9f3e1683f0a9c4e6b57960b7314d0b08d30d1ecd426713ee2eee9"
 
 [[package]]
 name = "socket2"
@@ -2803,9 +2815,9 @@ checksum = "1f3ccbac311fea05f86f61904b462b55fb3df8837a366dfc601a0161d0532f20"
 
 [[package]]
 name = "tokio"
-version = "1.44.1"
+version = "1.44.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "f382da615b842244d4b8738c82ed1275e6c5dd90c459a30941cd07080b06c91a"
+checksum = "e6b88822cbe49de4185e3a4cbf8321dd487cf5fe0c5c65695fef6346371e9c48"
 dependencies = [
  "backtrace",
  "bytes",
@@ -3278,11 +3290,37 @@ checksum = "712e227841d057c1ee1cd2fb22fa7e5a5461ae8e48fa2ca79ec42cfc1931183f"
 
 [[package]]
 name = "windows-core"
-version = "0.52.0"
+version = "0.61.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "33ab640c8d7e35bf8ba19b884ba838ceb4fba93a4e8c65a9059d08afcfc683d9"
+checksum = "4763c1de310c86d75a878046489e2e5ba02c649d185f21c67d4cf8a56d098980"
 dependencies = [
- "windows-targets 0.52.6",
+ "windows-implement",
+ "windows-interface",
+ "windows-link",
+ "windows-result",
+ "windows-strings 0.4.0",
+]
+
+[[package]]
+name = "windows-implement"
+version = "0.60.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "a47fddd13af08290e67f4acabf4b459f647552718f683a7b415d290ac744a836"
+dependencies = [
+ "proc-macro2",
+ "quote",
+ "syn 2.0.100",
+]
+
+[[package]]
+name = "windows-interface"
+version = "0.59.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "bd9211b69f8dcdfa817bfd14bf1c97c9188afa36f4750130fcdf3f400eca9fa8"
+dependencies = [
+ "proc-macro2",
+ "quote",
+ "syn 2.0.100",
 ]
 
 [[package]]
@@ -3298,7 +3336,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "4286ad90ddb45071efd1a66dfa43eb02dd0dfbae1545ad6cc3c51cf34d7e8ba3"
 dependencies = [
  "windows-result",
- "windows-strings",
+ "windows-strings 0.3.1",
  "windows-targets 0.53.0",
 ]
 
@@ -3320,6 +3358,15 @@ dependencies = [
  "windows-link",
 ]
 
+[[package]]
+name = "windows-strings"
+version = "0.4.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "7a2ba9642430ee452d5a7aa78d72907ebe8cfda358e8cb7918a2050581322f97"
+dependencies = [
+ "windows-link",
+]
+
 [[package]]
 name = "windows-sys"
 version = "0.48.0"
@@ -3691,9 +3738,9 @@ dependencies = [
 
 [[package]]
 name = "zip"
-version = "2.5.0"
+version = "2.6.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "27c03817464f64e23f6f37574b4fdc8cf65925b5bfd2b0f2aedf959791941f88"
+checksum = "1dcb24d0152526ae49b9b96c1dcf71850ca1e0b882e4e28ed898a93c41334744"
 dependencies = [
  "aes",
  "arbitrary",
diff --git a/Cargo.toml b/Cargo.toml
index 31e5bb4..8df90f6 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -5,16 +5,16 @@ edition = "2021"
 
 
 [dependencies]
-axum = { version = "0.8.1", features = ["multipart", "http1", "tokio", "macros"] }
-tokio = { version = "1.44.1", features = ["full"] }
+axum = { version = "0.8.3", features = ["multipart", "http1", "tokio", "macros"] }
+tokio = { version = "1.44.2", features = ["full"] }
 tokio-util = { version = "0.7.14", features = ["io", "codec"] }
 tokio-stream = { version = "0.1.17", features = ["fs"] }
 bytes = "1.10.1"
 tempfile = "3.19.1"
 tower = "0.5.2"
 tower-http = { version = "0.6.2", features = ["fs", "compression-gzip", "trace", "cors", "add-extension", "request-id"] }
-flate2 = "1.1.0"
-zip = "2.5.0"
+flate2 = "1.1.1"
+zip = "2.6.1"
 tracing = "0.1.41"
 tracing-subscriber = { version = "0.3.19", features = ["env-filter"] }
 chrono = { version = "0.4.40", features = ["serde"] }
@@ -39,9 +39,10 @@ rand_core = { version = "0.6.4", features = ["std"] }
 time = "0.3.41"
 axum-server = "0.6.0"
 hyper = { version = "1.6.0", features = ["full"] }
-url = "2.5.0"
+url = "2.5.4"
 quick-xml = "0.30.0"
 http-body-util = "0.1.3"
+openssl = { version = "0.10.72", features = ["vendored"] }
 
 [features]
 default = []
diff --git a/Dockerfile b/Dockerfile
index b4e6a9b..68bbe5d 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -2,7 +2,7 @@
 FROM rust:1.85-alpine AS cacher
 WORKDIR /app
 RUN apk --no-cache upgrade && \
-    apk add --no-cache musl-dev openssl-dev pkgconfig postgresql-dev
+    apk add --no-cache musl-dev pkgconfig postgresql-dev gcc perl make
 COPY Cargo.toml Cargo.lock ./
 # Create a minimal project to download and cache dependencies
 RUN mkdir -p src && \
@@ -14,7 +14,7 @@ RUN mkdir -p src && \
 FROM rust:1.85-alpine AS builder
 WORKDIR /app
 RUN apk --no-cache upgrade && \
-    apk add --no-cache musl-dev openssl-dev pkgconfig postgresql-dev
+    apk add --no-cache musl-dev pkgconfig postgresql-dev gcc perl make
 # Copy cached dependencies
 COPY --from=cacher /app/target target
 COPY --from=cacher /usr/local/cargo /usr/local/cargo
@@ -30,7 +30,7 @@ RUN cargo build --release
 FROM alpine:3.21.3
 # Install only necessary runtime dependencies and update packages
 RUN apk --no-cache upgrade && \
-    apk add --no-cache libgcc openssl ca-certificates libpq tzdata
+    apk add --no-cache libgcc ca-certificates libpq tzdata
 
 # Copy only the compiled binary
 COPY --from=builder /app/target/release/oxicloud /usr/local/bin/
diff --git a/ISSUE_45_SOLUTION.md b/ISSUE_45_SOLUTION.md
new file mode 100644
index 0000000..a24c02f
--- /dev/null
+++ b/ISSUE_45_SOLUTION.md
@@ -0,0 +1,89 @@
+# Solución para el issue #45: [BUG] Admin already exists?
+
+## Descripción del problema
+
+Al intentar configurar un usuario administrador, algunos usuarios reciben el error:
+
+```
+2025-04-09T14:01:26.733566Z ERROR oxicloud::interfaces::api::handlers::auth_handler: Registration failed for user admin: Already Exists: El usuario 'admin' ya existe
+```
+
+## Causa raíz
+
+Este problema ocurre debido a cómo está implementada la migración de datos inicial. En el archivo `migrations/20250408000001_default_users.sql`, el sistema intenta crear un usuario admin por defecto durante la migración inicial, pero:
+
+1. Si luego el usuario intenta crear manualmente otro usuario con nombre "admin", el sistema detecta el conflicto.
+2. La cláusula `ON CONFLICT (id) DO NOTHING` solo previene conflictos en el ID, no en el nombre de usuario.
+
+## Solución implementada
+
+Hemos realizado los siguientes cambios:
+
+1. Modificado `migrations/20250408000001_default_users.sql` para comprobar primero si el usuario "admin" ya existe:
+
+```sql
+-- Check if admin user already exists before creating it
+DO $$$
+BEGIN
+    IF NOT EXISTS (SELECT 1 FROM auth.users WHERE username = 'admin') THEN
+        -- Create admin user (password: Admin123!)
+        INSERT INTO auth.users (
+            id, 
+            username, 
+            ...
+        ) VALUES (...);
+    END IF;
+END;
+$$$;
+```
+
+2. Creado un script `scripts/reset_admin.sql` que puede ejecutarse para eliminar el usuario admin existente:
+
+```sql
+-- Set the correct schema
+SET search_path TO auth;
+
+-- Delete the admin user if it exists
+DELETE FROM auth.users WHERE username = 'admin';
+
+-- Output remaining users for verification
+SELECT username, email, role FROM auth.users ORDER BY role, username;
+```
+
+3. Actualizado la documentación en `doc/DATABASE-MIGRATIONS.md` con instrucciones detalladas para resolver este problema.
+
+## Instrucciones para usuarios afectados
+
+Si encuentras el error "Admin already exists", tienes dos opciones:
+
+### Opción 1: Usar el script proporcionado
+```bash
+cat scripts/reset_admin.sql | docker exec -i oxicloud-postgres-1 psql -U postgres -d oxicloud
+```
+
+### Opción 2: Hacerlo manualmente
+1. Conéctate al contenedor de PostgreSQL:
+```bash
+# Encuentra el contenedor
+docker ps
+# Ejemplo: oxicloud-postgres-1
+docker exec -it oxicloud-postgres-1 bash
+```
+
+2. Conéctate a la base de datos:
+```bash
+psql -U postgres -d oxicloud
+```
+
+3. Borra el usuario admin existente:
+```sql
+SET search_path TO auth;
+DELETE FROM auth.users WHERE username = 'admin';
+```
+
+4. Verifica que se eliminó correctamente:
+```sql
+SELECT username, email, role FROM auth.users;
+```
+
+5. Sal y registra un nuevo usuario admin a través de la interfaz web.
diff --git a/TODO-LIST.md b/TODO-LIST.md
index bb8ed7c..8d9867a 100644
--- a/TODO-LIST.md
+++ b/TODO-LIST.md
@@ -104,6 +104,8 @@ This document contains the task list for the development of OxiCloud, a minimali
 - [ ] Add support for locking
 - [ ] Test compatibility with standard clients
 - [ ] Optimize WebDAV performance
+- [ ] Implement Range Requests (RFC 7233) for resumable transfers
+- [ ] Support partial file updates with HTTP PATCH for bandwidth efficiency
 
 ### Sync Client
 - [ ] Design client architecture in Rust
@@ -112,6 +114,9 @@ This document contains the task list for the development of OxiCloud, a minimali
 - [ ] Implement conflict detection
 - [ ] Add configuration options
 - [ ] Create minimal client version for Windows/macOS/Linux
+- [ ] Implement bandwidth throttling controls
+- [ ] Add delta synchronization for large files
+- [ ] Support synchronization pausing and resuming
 
 ## Phase 5: Advanced Features
 
@@ -146,6 +151,9 @@ This document contains the task list for the development of OxiCloud, a minimali
 - [x] Implement asynchronous processing for heavy tasks
 - [ ] Optimize database queries
 - [ ] Implement scaling strategies
+- [ ] Implement transfer acceleration with multipart chunking
+- [ ] Implement differential sync algorithm (similar to rsync)
+- [ ] Add strong ETag support for more efficient caching
 
 ### Frontend
 - [ ] Optimize initial asset loading
@@ -154,6 +162,9 @@ This document contains the task list for the development of OxiCloud, a minimali
 - [ ] Optimize UI rendering
 - [ ] Implement intelligent prefetching
 - [ ] Add basic offline support
+- [ ] Implement client-side image resizing before upload
+- [ ] Add HTTP/2 support for multiplexing requests
+- [ ] Implement progressive image loading
 
 ### Storage
 - [ ] Research deduplication options
@@ -162,6 +173,9 @@ This document contains the task list for the development of OxiCloud, a minimali
 - [ ] Implement log rotation and archiving
 - [ ] Create automated backup system
 - [ ] Add support for distributed storage
+- [ ] Implement media transcoding for optimized delivery
+- [ ] Add content-aware compression by file format
+- [ ] Implement dynamic thumbnail resizing based on viewport
 
 ## Infrastructure and Deployment
 
diff --git a/doc/DATABASE-MIGRATIONS.md b/doc/DATABASE-MIGRATIONS.md
index 9f93c3a..d656604 100644
--- a/doc/DATABASE-MIGRATIONS.md
+++ b/doc/DATABASE-MIGRATIONS.md
@@ -136,6 +136,45 @@ match migration_check {
 
 3. **Permisos insuficientes**: Asegúrate de que el usuario de la base de datos tenga permisos suficientes para crear esquemas, tablas e índices.
 
+4. **Error "Admin already exists"**: Si al intentar registrar un usuario admin recibes el error "El usuario 'admin' ya existe", sigue estos pasos:
+
+   a. Conéctate al contenedor de PostgreSQL:
+   ```bash
+   # Encuentra el contenedor
+   docker ps
+   # Ejemplo: oxicloud-postgres-1
+   docker exec -it oxicloud-postgres-1 bash
+   ```
+
+   b. Conéctate a la base de datos:
+   ```bash
+   psql -U postgres -d oxicloud
+   ```
+
+   c. Establece el esquema y borra el usuario admin existente:
+   ```sql
+   SET search_path TO auth;
+   DELETE FROM auth.users WHERE username = 'admin';
+   ```
+
+   d. Verifica la eliminación:
+   ```sql
+   SELECT username, email, role FROM auth.users;
+   ```
+
+   e. Sal de PostgreSQL:
+   ```sql
+   \q
+   exit
+   ```
+
+   f. Ahora puedes registrar un nuevo usuario admin a través de la interfaz de OxiCloud.
+
+   Alternativamente, utiliza el script proporcionado:
+   ```bash
+   cat scripts/reset_admin.sql | docker exec -i oxicloud-postgres-1 psql -U postgres -d oxicloud
+   ```
+
 ## Beneficios del Enfoque Basado en Migraciones
 
 - **Separación de Responsabilidades**: Las migraciones están separadas del código de la aplicación.
diff --git a/migrations/20250408000001_default_users.sql b/migrations/20250408000001_default_users.sql
index 5daac3a..ccd520e 100644
--- a/migrations/20250408000001_default_users.sql
+++ b/migrations/20250408000001_default_users.sql
@@ -1,35 +1,49 @@
 -- Migration 002: Default Users
 
--- Create admin user (password: Admin123!)
-INSERT INTO auth.users (
-    id, 
-    username, 
-    email, 
-    password_hash, 
-    role, 
-    storage_quota_bytes
-) VALUES (
-    '00000000-0000-0000-0000-000000000000',
-    'admin',
-    'admin@oxicloud.local',
-    '$argon2id$v=19$m=65536,t=3,p=4$c2FsdHNhbHRzYWx0c2FsdA$H3VxE8LL2qPT31DM3loTg6D+O4MSc2sD7GjlQ5h7Jkw', -- Admin123!
-    'admin',
-    107374182400  -- 100GB for admin
-) ON CONFLICT (id) DO NOTHING;
+-- Check if admin user already exists before creating it
+DO $$
+BEGIN
+    IF NOT EXISTS (SELECT 1 FROM auth.users WHERE username = 'admin') THEN
+        -- Create admin user (password: Admin123!)
+        INSERT INTO auth.users (
+            id, 
+            username, 
+            email, 
+            password_hash, 
+            role, 
+            storage_quota_bytes
+        ) VALUES (
+            '00000000-0000-0000-0000-000000000000',
+            'admin',
+            'admin@oxicloud.local',
+            '$argon2id$v=19$m=65536,t=3,p=4$c2FsdHNhbHRzYWx0c2FsdA$H3VxE8LL2qPT31DM3loTg6D+O4MSc2sD7GjlQ5h7Jkw', -- Admin123!
+            'admin',
+            107374182400  -- 100GB for admin
+        );
+    END IF;
+END;
+$$;
 
--- Create test user (password: test123)
-INSERT INTO auth.users (
-    id, 
-    username, 
-    email, 
-    password_hash, 
-    role, 
-    storage_quota_bytes
-) VALUES (
-    '11111111-1111-1111-1111-111111111111',
-    'test',
-    'test@oxicloud.local',
-    '$argon2id$v=19$m=65536,t=3,p=4$c2FsdHNhbHRzYWx0c2FsdA$ZG17Z7SFKhs9zWYbuk08CkHpyiznnZapYnxN5Vi62R4', -- test123
-    'user',
-    10737418240  -- 10GB for test user
-) ON CONFLICT (id) DO NOTHING;
\ No newline at end of file
+-- Check if test user already exists before creating it
+DO $$
+BEGIN
+    IF NOT EXISTS (SELECT 1 FROM auth.users WHERE username = 'test') THEN
+        -- Create test user (password: test123)
+        INSERT INTO auth.users (
+            id, 
+            username, 
+            email, 
+            password_hash, 
+            role, 
+            storage_quota_bytes
+        ) VALUES (
+            '11111111-1111-1111-1111-111111111111',
+            'test',
+            'test@oxicloud.local',
+            '$argon2id$v=19$m=65536,t=3,p=4$c2FsdHNhbHRzYWx0c2FsdA$ZG17Z7SFKhs9zWYbuk08CkHpyiznnZapYnxN5Vi62R4', -- test123
+            'user',
+            10737418240  -- 10GB for test user
+        );
+    END IF;
+END;
+$$;
\ No newline at end of file
diff --git a/scripts/reset_admin.sql b/scripts/reset_admin.sql
new file mode 100644
index 0000000..1d795cb
--- /dev/null
+++ b/scripts/reset_admin.sql
@@ -0,0 +1,19 @@
+-- Script to safely reset the admin user in OxiCloud
+-- Run this script to delete the existing admin user if you're having issues creating one
+
+-- Set the correct schema
+SET search_path TO auth;
+
+-- Delete the admin user if it exists
+DELETE FROM auth.users WHERE username = 'admin';
+
+-- Check if the user was deleted
+SELECT 'Admin user has been removed successfully. You can now create a new admin user.' AS message 
+WHERE NOT EXISTS (SELECT 1 FROM auth.users WHERE username = 'admin');
+
+-- Check if there are still users in the system
+SELECT 'Warning: No users remain in the system. You should register a new admin user.' AS warning 
+WHERE NOT EXISTS (SELECT 1 FROM auth.users LIMIT 1);
+
+-- Output remaining users for verification
+SELECT username, email, role FROM auth.users ORDER BY role, username;
\ No newline at end of file
diff --git a/src/application/adapters/webdav_adapter.rs b/src/application/adapters/webdav_adapter.rs
index 8794792..47a7ef2 100644
--- a/src/application/adapters/webdav_adapter.rs
+++ b/src/application/adapters/webdav_adapter.rs
@@ -210,7 +210,7 @@ impl WebDavAdapter {
         files: &[FileDto],
         subfolders: &[FolderDto],
         request: &PropFindRequest,
-        depth: &str,
+        _depth: &str,
         base_href: &str,
     ) -> Result<()> {
         let mut xml_writer = Writer::new(writer);
@@ -226,7 +226,7 @@ impl WebDavAdapter {
         }
         
         // If depth allows, add responses for files and subfolders
-        if depth != "0" {
+        if _depth != "0" {
             // Add responses for files
             for file in files {
                 Self::write_file_response(&mut xml_writer, file, request, &format!("{}{}", base_href, file.name))?;
@@ -249,7 +249,7 @@ impl WebDavAdapter {
         writer: W,
         file: &FileDto,
         request: &PropFindRequest,
-        depth: &str,
+        _depth: &str,
         href: &str,
     ) -> Result<()> {
         let mut xml_writer = Writer::new(writer);
diff --git a/src/application/services/favorites_service.rs b/src/application/services/favorites_service.rs
index 1f5b671..9b1e203 100644
--- a/src/application/services/favorites_service.rs
+++ b/src/application/services/favorites_service.rs
@@ -38,7 +38,7 @@ impl FavoritesUseCase for FavoritesService {
                 item_type as "item_type", 
                 created_at as "created_at"
             FROM auth.user_favorites 
-            WHERE user_id = $1
+            WHERE user_id = $1::TEXT
             ORDER BY created_at DESC
             "#
         )
@@ -90,7 +90,7 @@ impl FavoritesUseCase for FavoritesService {
         sqlx::query(
             r#"
             INSERT INTO auth.user_favorites (user_id, item_id, item_type)
-            VALUES ($1, $2, $3)
+            VALUES ($1::TEXT, $2, $3)
             ON CONFLICT (user_id, item_id, item_type) DO NOTHING
             "#
         )
@@ -123,7 +123,7 @@ impl FavoritesUseCase for FavoritesService {
         let result = sqlx::query(
             r#"
             DELETE FROM auth.user_favorites
-            WHERE user_id = $1 AND item_id = $2 AND item_type = $3
+            WHERE user_id = $1::TEXT AND item_id = $2 AND item_type = $3
             "#
         )
         .bind(user_uuid)
@@ -164,7 +164,7 @@ impl FavoritesUseCase for FavoritesService {
             r#"
             SELECT EXISTS (
                 SELECT 1 FROM auth.user_favorites
-                WHERE user_id = $1 AND item_id = $2 AND item_type = $3
+                WHERE user_id = $1::TEXT AND item_id = $2 AND item_type = $3
             ) AS "is_favorite"
             "#
         )
diff --git a/src/application/services/recent_service.rs b/src/application/services/recent_service.rs
index ed61f3d..dda0585 100644
--- a/src/application/services/recent_service.rs
+++ b/src/application/services/recent_service.rs
@@ -45,7 +45,7 @@ impl RecentItemsUseCase for RecentService {
                 item_type as "item_type", 
                 accessed_at as "accessed_at"
             FROM auth.user_recent_files 
-            WHERE user_id = $1
+            WHERE user_id = $1::TEXT
             ORDER BY accessed_at DESC
             LIMIT $2
             "#
@@ -99,7 +99,7 @@ impl RecentItemsUseCase for RecentService {
         sqlx::query(
             r#"
             INSERT INTO auth.user_recent_files (user_id, item_id, item_type, accessed_at)
-            VALUES ($1, $2, $3, CURRENT_TIMESTAMP)
+            VALUES ($1::TEXT, $2, $3, CURRENT_TIMESTAMP)
             ON CONFLICT (user_id, item_id, item_type) 
             DO UPDATE SET accessed_at = CURRENT_TIMESTAMP
             "#
@@ -136,7 +136,7 @@ impl RecentItemsUseCase for RecentService {
         let result = sqlx::query(
             r#"
             DELETE FROM auth.user_recent_files
-            WHERE user_id = $1 AND item_id = $2 AND item_type = $3
+            WHERE user_id = $1::TEXT AND item_id = $2 AND item_type = $3
             "#
         )
         .bind(user_uuid)
@@ -176,7 +176,7 @@ impl RecentItemsUseCase for RecentService {
         sqlx::query(
             r#"
             DELETE FROM auth.user_recent_files
-            WHERE user_id = $1
+            WHERE user_id = $1::TEXT
             "#
         )
         .bind(user_uuid)
@@ -208,7 +208,7 @@ impl RecentService {
             DELETE FROM auth.user_recent_files
             WHERE id IN (
                 SELECT id FROM auth.user_recent_files
-                WHERE user_id = $1
+                WHERE user_id = $1::TEXT
                 ORDER BY accessed_at DESC
                 OFFSET $2
             )
diff --git a/src/infrastructure/repositories/file_fs_repository.rs b/src/infrastructure/repositories/file_fs_repository.rs
index ae8838e..f0539d7 100644
--- a/src/infrastructure/repositories/file_fs_repository.rs
+++ b/src/infrastructure/repositories/file_fs_repository.rs
@@ -19,7 +19,7 @@ use crate::domain::repositories::file_repository::{
     FileRepository, FileRepositoryError, FileRepositoryResult
 };
 use crate::application::services::storage_mediator::StorageMediator;
-use crate::application::ports::outbound::IdMappingPort;
+// use crate::application::ports::outbound::IdMappingPort;
 use crate::infrastructure::services::id_mapping_service::IdMappingError;
 use crate::infrastructure::services::file_metadata_cache::{FileMetadataCache, CacheEntryType};
 use crate::domain::services::path_service::{StoragePath, PathService};
diff --git a/src/infrastructure/repositories/file_path_resolver.rs b/src/infrastructure/repositories/file_path_resolver.rs
index 24b783b..c55bb12 100644
--- a/src/infrastructure/repositories/file_path_resolver.rs
+++ b/src/infrastructure/repositories/file_path_resolver.rs
@@ -4,7 +4,7 @@ use async_trait::async_trait;
 
 use crate::domain::services::path_service::{PathService, StoragePath};
 use crate::application::services::storage_mediator::StorageMediator;
-use crate::application::ports::outbound::IdMappingPort;
+// use crate::application::ports::outbound::IdMappingPort;
 use crate::domain::repositories::file_repository::FileRepositoryError;
 use crate::common::errors::DomainError;
 use crate::application::ports::storage_ports::FilePathResolutionPort;
diff --git a/src/infrastructure/repositories/folder_fs_repository.rs b/src/infrastructure/repositories/folder_fs_repository.rs
index 5ae1e31..ba61a68 100644
--- a/src/infrastructure/repositories/folder_fs_repository.rs
+++ b/src/infrastructure/repositories/folder_fs_repository.rs
@@ -11,7 +11,7 @@ use crate::domain::repositories::folder_repository::{
     FolderRepository, FolderRepositoryError, FolderRepositoryResult
 };
 use crate::domain::services::path_service::{StoragePath, PathService};
-use crate::application::ports::outbound::IdMappingPort;
+// use crate::application::ports::outbound::IdMappingPort;
 use crate::infrastructure::services::id_mapping_service::{IdMappingService, IdMappingError};
 use crate::application::services::storage_mediator::StorageMediator;
 use crate::application::ports::outbound::FolderStoragePort;
diff --git a/src/infrastructure/repositories/pg/session_pg_repository.rs b/src/infrastructure/repositories/pg/session_pg_repository.rs
index becb4cc..78f564c 100644
--- a/src/infrastructure/repositories/pg/session_pg_repository.rs
+++ b/src/infrastructure/repositories/pg/session_pg_repository.rs
@@ -1,5 +1,5 @@
 use async_trait::async_trait;
-use sqlx::{PgPool, Row, Executor};
+use sqlx::{PgPool, Row};
 use std::sync::Arc;
 use chrono::Utc;
 use futures::future::BoxFuture;
diff --git a/src/infrastructure/repositories/pg/user_pg_repository.rs b/src/infrastructure/repositories/pg/user_pg_repository.rs
index 6257166..de322f4 100644
--- a/src/infrastructure/repositories/pg/user_pg_repository.rs
+++ b/src/infrastructure/repositories/pg/user_pg_repository.rs
@@ -1,5 +1,5 @@
 use async_trait::async_trait;
-use sqlx::{PgPool, Row, Executor};
+use sqlx::{PgPool, Row};
 use std::sync::Arc;
 use futures::future::BoxFuture;
 
diff --git a/src/interfaces/api/handlers/file_handler.rs b/src/interfaces/api/handlers/file_handler.rs
index 4cfda62..47ce98d 100644
--- a/src/interfaces/api/handlers/file_handler.rs
+++ b/src/interfaces/api/handlers/file_handler.rs
@@ -8,7 +8,7 @@ use axum::{
 use serde::Deserialize;
 use std::collections::HashMap;
 use futures::Stream;
-use futures::StreamExt;
+// use futures::StreamExt;
 use std::task::{Context, Poll};
 use std::pin::Pin;
 
diff --git a/src/interfaces/api/handlers/trash_handler.rs b/src/interfaces/api/handlers/trash_handler.rs
index 1b52f90..a685168 100644
--- a/src/interfaces/api/handlers/trash_handler.rs
+++ b/src/interfaces/api/handlers/trash_handler.rs
@@ -4,7 +4,7 @@ use axum::Json;
 use serde_json::json;
 use tracing::{debug, error, instrument};
 
-use crate::application::ports::trash_ports::TrashUseCase;
+// use crate::application::ports::trash_ports::TrashUseCase;
 use crate::common::di::AppState;
 use crate::interfaces::middleware::auth::AuthUser;
 
diff --git a/src/interfaces/api/handlers/webdav_handler.rs b/src/interfaces/api/handlers/webdav_handler.rs
index f7f68d6..98bf8bf 100644
--- a/src/interfaces/api/handlers/webdav_handler.rs
+++ b/src/interfaces/api/handlers/webdav_handler.rs
@@ -15,7 +15,6 @@ use axum::{
 };
 use std::sync::Arc;
 use uuid::Uuid;
-use http_body_util::BodyExt;
 use chrono::Utc;
 use bytes::Buf;
 
@@ -28,7 +27,7 @@ use crate::common::errors::AppError;
 // Create a custom DAV header since it's not in the standard headers
 const HEADER_DAV: HeaderName = HeaderName::from_static("dav");
 const HEADER_LOCK_TOKEN: HeaderName = HeaderName::from_static("lock-token");
-const HEADER_IF: HeaderName = HeaderName::from_static("if");
+// const HEADER_IF: HeaderName = HeaderName::from_static("if");
 
 /**
  * Creates and returns the WebDAV router with all required endpoints.
@@ -81,7 +80,7 @@ async fn handle_options(
 ) -> Result<Response<Body>, AppError> {
     // Extract State and Path from request
     let parts = req.uri().path().split('/').collect::<Vec<&str>>();
-    let path = if parts.len() > 2 {
+    let _path = if parts.len() > 2 {
         parts[2..].join("/")
     } else {
         "".to_string()
@@ -313,10 +312,10 @@ async fn handle_proppatch(
         "".to_string()
     };
     
-    let state = req.extensions().get::<Arc<AppState>>().ok_or_else(|| {
+    let _state = req.extensions().get::<Arc<AppState>>().ok_or_else(|| {
         AppError::internal_error("Missing AppState extension")
     })?;
-    let user = req.extensions().get::<CurrentUser>().ok_or_else(|| {
+    let _user = req.extensions().get::<CurrentUser>().ok_or_else(|| {
         AppError::unauthorized("Authentication required")
     })?;
     
@@ -391,7 +390,7 @@ async fn handle_get(
     let state = req.extensions().get::<Arc<AppState>>().ok_or_else(|| {
         AppError::internal_error("Missing AppState extension")
     })?;
-    let user = req.extensions().get::<CurrentUser>().ok_or_else(|| {
+    let _user = req.extensions().get::<CurrentUser>().ok_or_else(|| {
         AppError::unauthorized("Authentication required")
     })?;
     
@@ -405,7 +404,7 @@ async fn handle_get(
     }
     
     // Get file metadata
-    let file = file_service.get_file_by_path(&path).await.map_err(|e| {
+    let file = file_service.get_file_by_path(&path).await.map_err(|_e| {
         AppError::not_found(format!("File not found: {}", path))
     })?;
     
@@ -654,7 +653,7 @@ async fn handle_delete(
     let state = req.extensions().get::<Arc<AppState>>().ok_or_else(|| {
         AppError::internal_error("Missing AppState extension")
     })?;
-    let user = req.extensions().get::<CurrentUser>().ok_or_else(|| {
+    let _user = req.extensions().get::<CurrentUser>().ok_or_else(|| {
         AppError::unauthorized("Authentication required")
     })?;
     
@@ -677,7 +676,7 @@ async fn handle_delete(
         })?;
     } else {
         // Try to delete file
-        let file = file_service.get_file_by_path(&path).await.map_err(|e| {
+        let file = file_service.get_file_by_path(&path).await.map_err(|_e| {
             AppError::not_found(format!("Resource not found: {}", path))
         })?;
         
@@ -718,7 +717,7 @@ async fn handle_move(
     let state = req.extensions().get::<Arc<AppState>>().ok_or_else(|| {
         AppError::internal_error("Missing AppState extension")
     })?;
-    let user = req.extensions().get::<CurrentUser>().ok_or_else(|| {
+    let _user = req.extensions().get::<CurrentUser>().ok_or_else(|| {
         AppError::unauthorized("Authentication required")
     })?;
     
@@ -779,7 +778,7 @@ async fn handle_move(
         }
     } else {
         // Try to move file
-        let file = file_service.get_file_by_path(&source_path).await.map_err(|e| {
+        let file = file_service.get_file_by_path(&source_path).await.map_err(|_e| {
             AppError::not_found(format!("Resource not found: {}", source_path))
         })?;
         
@@ -826,7 +825,7 @@ async fn handle_copy(
     let state = req.extensions().get::<Arc<AppState>>().ok_or_else(|| {
         AppError::internal_error("Missing AppState extension")
     })?;
-    let user = req.extensions().get::<CurrentUser>().ok_or_else(|| {
+    let _user = req.extensions().get::<CurrentUser>().ok_or_else(|| {
         AppError::unauthorized("Authentication required")
     })?;
     
@@ -884,7 +883,7 @@ async fn handle_copy(
             }
         };
         
-        let new_folder = folder_service.create_folder(create_dto).await.map_err(|e| {
+        let _new_folder = folder_service.create_folder(create_dto).await.map_err(|e| {
             AppError::internal_error(format!("Failed to create destination folder: {}", e))
         })?;
         
@@ -908,7 +907,7 @@ async fn handle_copy(
         }
     } else {
         // Try to copy file
-        let file = file_service.get_file_by_path(&source_path).await.map_err(|e| {
+        let file = file_service.get_file_by_path(&source_path).await.map_err(|_e| {
             AppError::not_found(format!("Resource not found: {}", source_path))
         })?;
         
@@ -964,7 +963,7 @@ async fn handle_lock(
     };
     
     // Get the state and user in a way that doesn't keep req borrowed
-    let state = {
+    let _state = {
         let state_ref = req.extensions().get::<Arc<AppState>>().ok_or_else(|| {
             AppError::internal_error("Missing AppState extension")
         })?;
@@ -1104,7 +1103,7 @@ async fn handle_unlock(
 ) -> Result<Response<Body>, AppError> {
     // Clone all necessary data first to avoid borrow issues
     let uri = req.uri().clone();
-    let path = {
+    let _path = {
         let parts = uri.path().split('/').collect::<Vec<&str>>();
         if parts.len() > 2 {
             parts[2..].join("/")
@@ -1135,7 +1134,7 @@ async fn handle_unlock(
         .ok_or_else(|| AppError::bad_request("Lock-Token header required"))?;
     
     // Extract token from header value (format: <token>)
-    let token = lock_token
+    let _token = lock_token
         .trim()
         .trim_start_matches('<')
         .trim_end_matches('>')