diff --git a/package-lock.json b/package-lock.json
index ece46e1c3..958bec733 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -9,6 +9,7 @@
       "version": "0.1.0",
       "dependencies": {
         "@tauri-apps/api": "^2",
+        "@tauri-apps/plugin-deep-link": "^2",
         "@tauri-apps/plugin-opener": "^2",
         "@types/react-router-dom": "^5.3.3",
         "react": "^19.1.0",
@@ -1464,6 +1465,15 @@
         "node": ">= 10"
       }
     },
+    "node_modules/@tauri-apps/plugin-deep-link": {
+      "version": "2.4.6",
+      "resolved": "https://registry.npmjs.org/@tauri-apps/plugin-deep-link/-/plugin-deep-link-2.4.6.tgz",
+      "integrity": "sha512-UUOSt0U5juK20uhO2MoHZX/IPblkrhUh+VPtIeu3RwtzI0R9Em3Auzfg/PwcZ9Pv8mLne3cQ4p9CFXD6WxqCZA==",
+      "license": "MIT OR Apache-2.0",
+      "dependencies": {
+        "@tauri-apps/api": "^2.8.0"
+      }
+    },
     "node_modules/@tauri-apps/plugin-opener": {
       "version": "2.5.3",
       "resolved": "https://registry.npmjs.org/@tauri-apps/plugin-opener/-/plugin-opener-2.5.3.tgz",
@@ -1876,18 +1886,6 @@
         }
       }
     },
-    "node_modules/detect-libc": {
-      "version": "2.1.2",
-      "resolved": "https://registry.npmjs.org/detect-libc/-/detect-libc-2.1.2.tgz",
-      "integrity": "sha512-Btj2BOOO83o3WyH59e8MgXsxEQVcarkUOpEYrubB0urwnN10yQ364rsiByU11nZlqWYZm05i/of7io4mzihBtQ==",
-      "dev": true,
-      "license": "Apache-2.0",
-      "optional": true,
-      "peer": true,
-      "engines": {
-        "node": ">=8"
-      }
-    },
     "node_modules/didyoumean": {
       "version": "1.2.2",
       "resolved": "https://registry.npmjs.org/didyoumean/-/didyoumean-1.2.2.tgz",
@@ -2169,18 +2167,6 @@
         "node": ">=0.12.0"
       }
     },
-    "node_modules/jiti": {
-      "version": "2.6.1",
-      "resolved": "https://registry.npmjs.org/jiti/-/jiti-2.6.1.tgz",
-      "integrity": "sha512-ekilCSN1jwRvIbgeg/57YFh8qQDNbwDb9xT/qu2DAHbFFZUicIl4ygVaAvzveMhMVr3LnpSKTNnwt8PoOfmKhQ==",
-      "dev": true,
-      "license": "MIT",
-      "optional": true,
-      "peer": true,
-      "bin": {
-        "jiti": "lib/jiti-cli.mjs"
-      }
-    },
     "node_modules/js-tokens": {
       "version": "4.0.0",
       "resolved": "https://registry.npmjs.org/js-tokens/-/js-tokens-4.0.0.tgz",
@@ -2214,280 +2200,6 @@
         "node": ">=6"
       }
     },
-    "node_modules/lightningcss": {
-      "version": "1.30.2",
-      "resolved": "https://registry.npmjs.org/lightningcss/-/lightningcss-1.30.2.tgz",
-      "integrity": "sha512-utfs7Pr5uJyyvDETitgsaqSyjCb2qNRAtuqUeWIAKztsOYdcACf2KtARYXg2pSvhkt+9NfoaNY7fxjl6nuMjIQ==",
-      "dev": true,
-      "license": "MPL-2.0",
-      "optional": true,
-      "peer": true,
-      "dependencies": {
-        "detect-libc": "^2.0.3"
-      },
-      "engines": {
-        "node": ">= 12.0.0"
-      },
-      "funding": {
-        "type": "opencollective",
-        "url": "https://opencollective.com/parcel"
-      },
-      "optionalDependencies": {
-        "lightningcss-android-arm64": "1.30.2",
-        "lightningcss-darwin-arm64": "1.30.2",
-        "lightningcss-darwin-x64": "1.30.2",
-        "lightningcss-freebsd-x64": "1.30.2",
-        "lightningcss-linux-arm-gnueabihf": "1.30.2",
-        "lightningcss-linux-arm64-gnu": "1.30.2",
-        "lightningcss-linux-arm64-musl": "1.30.2",
-        "lightningcss-linux-x64-gnu": "1.30.2",
-        "lightningcss-linux-x64-musl": "1.30.2",
-        "lightningcss-win32-arm64-msvc": "1.30.2",
-        "lightningcss-win32-x64-msvc": "1.30.2"
-      }
-    },
-    "node_modules/lightningcss-android-arm64": {
-      "version": "1.30.2",
-      "resolved": "https://registry.npmjs.org/lightningcss-android-arm64/-/lightningcss-android-arm64-1.30.2.tgz",
-      "integrity": "sha512-BH9sEdOCahSgmkVhBLeU7Hc9DWeZ1Eb6wNS6Da8igvUwAe0sqROHddIlvU06q3WyXVEOYDZ6ykBZQnjTbmo4+A==",
-      "cpu": [
-        "arm64"
-      ],
-      "dev": true,
-      "license": "MPL-2.0",
-      "optional": true,
-      "os": [
-        "android"
-      ],
-      "peer": true,
-      "engines": {
-        "node": ">= 12.0.0"
-      },
-      "funding": {
-        "type": "opencollective",
-        "url": "https://opencollective.com/parcel"
-      }
-    },
-    "node_modules/lightningcss-darwin-arm64": {
-      "version": "1.30.2",
-      "resolved": "https://registry.npmjs.org/lightningcss-darwin-arm64/-/lightningcss-darwin-arm64-1.30.2.tgz",
-      "integrity": "sha512-ylTcDJBN3Hp21TdhRT5zBOIi73P6/W0qwvlFEk22fkdXchtNTOU4Qc37SkzV+EKYxLouZ6M4LG9NfZ1qkhhBWA==",
-      "cpu": [
-        "arm64"
-      ],
-      "dev": true,
-      "license": "MPL-2.0",
-      "optional": true,
-      "os": [
-        "darwin"
-      ],
-      "peer": true,
-      "engines": {
-        "node": ">= 12.0.0"
-      },
-      "funding": {
-        "type": "opencollective",
-        "url": "https://opencollective.com/parcel"
-      }
-    },
-    "node_modules/lightningcss-darwin-x64": {
-      "version": "1.30.2",
-      "resolved": "https://registry.npmjs.org/lightningcss-darwin-x64/-/lightningcss-darwin-x64-1.30.2.tgz",
-      "integrity": "sha512-oBZgKchomuDYxr7ilwLcyms6BCyLn0z8J0+ZZmfpjwg9fRVZIR5/GMXd7r9RH94iDhld3UmSjBM6nXWM2TfZTQ==",
-      "cpu": [
-        "x64"
-      ],
-      "dev": true,
-      "license": "MPL-2.0",
-      "optional": true,
-      "os": [
-        "darwin"
-      ],
-      "peer": true,
-      "engines": {
-        "node": ">= 12.0.0"
-      },
-      "funding": {
-        "type": "opencollective",
-        "url": "https://opencollective.com/parcel"
-      }
-    },
-    "node_modules/lightningcss-freebsd-x64": {
-      "version": "1.30.2",
-      "resolved": "https://registry.npmjs.org/lightningcss-freebsd-x64/-/lightningcss-freebsd-x64-1.30.2.tgz",
-      "integrity": "sha512-c2bH6xTrf4BDpK8MoGG4Bd6zAMZDAXS569UxCAGcA7IKbHNMlhGQ89eRmvpIUGfKWNVdbhSbkQaWhEoMGmGslA==",
-      "cpu": [
-        "x64"
-      ],
-      "dev": true,
-      "license": "MPL-2.0",
-      "optional": true,
-      "os": [
-        "freebsd"
-      ],
-      "peer": true,
-      "engines": {
-        "node": ">= 12.0.0"
-      },
-      "funding": {
-        "type": "opencollective",
-        "url": "https://opencollective.com/parcel"
-      }
-    },
-    "node_modules/lightningcss-linux-arm-gnueabihf": {
-      "version": "1.30.2",
-      "resolved": "https://registry.npmjs.org/lightningcss-linux-arm-gnueabihf/-/lightningcss-linux-arm-gnueabihf-1.30.2.tgz",
-      "integrity": "sha512-eVdpxh4wYcm0PofJIZVuYuLiqBIakQ9uFZmipf6LF/HRj5Bgm0eb3qL/mr1smyXIS1twwOxNWndd8z0E374hiA==",
-      "cpu": [
-        "arm"
-      ],
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-      "license": "MPL-2.0",
-      "optional": true,
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-        "linux"
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-      },
-      "funding": {
-        "type": "opencollective",
-        "url": "https://opencollective.com/parcel"
-      }
-    },
-    "node_modules/lightningcss-linux-arm64-gnu": {
-      "version": "1.30.2",
-      "resolved": "https://registry.npmjs.org/lightningcss-linux-arm64-gnu/-/lightningcss-linux-arm64-gnu-1.30.2.tgz",
-      "integrity": "sha512-UK65WJAbwIJbiBFXpxrbTNArtfuznvxAJw4Q2ZGlU8kPeDIWEX1dg3rn2veBVUylA2Ezg89ktszWbaQnxD/e3A==",
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-        "arm64"
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-        "linux"
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-      },
-      "funding": {
-        "type": "opencollective",
-        "url": "https://opencollective.com/parcel"
-      }
-    },
-    "node_modules/lightningcss-linux-arm64-musl": {
-      "version": "1.30.2",
-      "resolved": "https://registry.npmjs.org/lightningcss-linux-arm64-musl/-/lightningcss-linux-arm64-musl-1.30.2.tgz",
-      "integrity": "sha512-5Vh9dGeblpTxWHpOx8iauV02popZDsCYMPIgiuw97OJ5uaDsL86cnqSFs5LZkG3ghHoX5isLgWzMs+eD1YzrnA==",
-      "cpu": [
-        "arm64"
-      ],
-      "dev": true,
-      "license": "MPL-2.0",
-      "optional": true,
-      "os": [
-        "linux"
-      ],
-      "peer": true,
-      "engines": {
-        "node": ">= 12.0.0"
-      },
-      "funding": {
-        "type": "opencollective",
-        "url": "https://opencollective.com/parcel"
-      }
-    },
-    "node_modules/lightningcss-linux-x64-gnu": {
-      "version": "1.30.2",
-      "resolved": "https://registry.npmjs.org/lightningcss-linux-x64-gnu/-/lightningcss-linux-x64-gnu-1.30.2.tgz",
-      "integrity": "sha512-Cfd46gdmj1vQ+lR6VRTTadNHu6ALuw2pKR9lYq4FnhvgBc4zWY1EtZcAc6EffShbb1MFrIPfLDXD6Xprbnni4w==",
-      "cpu": [
-        "x64"
-      ],
-      "dev": true,
-      "license": "MPL-2.0",
-      "optional": true,
-      "os": [
-        "linux"
-      ],
-      "peer": true,
-      "engines": {
-        "node": ">= 12.0.0"
-      },
-      "funding": {
-        "type": "opencollective",
-        "url": "https://opencollective.com/parcel"
-      }
-    },
-    "node_modules/lightningcss-linux-x64-musl": {
-      "version": "1.30.2",
-      "resolved": "https://registry.npmjs.org/lightningcss-linux-x64-musl/-/lightningcss-linux-x64-musl-1.30.2.tgz",
-      "integrity": "sha512-XJaLUUFXb6/QG2lGIW6aIk6jKdtjtcffUT0NKvIqhSBY3hh9Ch+1LCeH80dR9q9LBjG3ewbDjnumefsLsP6aiA==",
-      "cpu": [
-        "x64"
-      ],
-      "dev": true,
-      "license": "MPL-2.0",
-      "optional": true,
-      "os": [
-        "linux"
-      ],
-      "peer": true,
-      "engines": {
-        "node": ">= 12.0.0"
-      },
-      "funding": {
-        "type": "opencollective",
-        "url": "https://opencollective.com/parcel"
-      }
-    },
-    "node_modules/lightningcss-win32-arm64-msvc": {
-      "version": "1.30.2",
-      "resolved": "https://registry.npmjs.org/lightningcss-win32-arm64-msvc/-/lightningcss-win32-arm64-msvc-1.30.2.tgz",
-      "integrity": "sha512-FZn+vaj7zLv//D/192WFFVA0RgHawIcHqLX9xuWiQt7P0PtdFEVaxgF9rjM/IRYHQXNnk61/H/gb2Ei+kUQ4xQ==",
-      "cpu": [
-        "arm64"
-      ],
-      "dev": true,
-      "license": "MPL-2.0",
-      "optional": true,
-      "os": [
-        "win32"
-      ],
-      "peer": true,
-      "engines": {
-        "node": ">= 12.0.0"
-      },
-      "funding": {
-        "type": "opencollective",
-        "url": "https://opencollective.com/parcel"
-      }
-    },
-    "node_modules/lightningcss-win32-x64-msvc": {
-      "version": "1.30.2",
-      "resolved": "https://registry.npmjs.org/lightningcss-win32-x64-msvc/-/lightningcss-win32-x64-msvc-1.30.2.tgz",
-      "integrity": "sha512-5g1yc73p+iAkid5phb4oVFMB45417DkRevRbt/El/gKXJk4jid+vPFF/AXbxn05Aky8PapwzZrdJShv5C0avjw==",
-      "cpu": [
-        "x64"
-      ],
-      "dev": true,
-      "license": "MPL-2.0",
-      "optional": true,
-      "os": [
-        "win32"
-      ],
-      "peer": true,
-      "engines": {
-        "node": ">= 12.0.0"
-      },
-      "funding": {
-        "type": "opencollective",
-        "url": "https://opencollective.com/parcel"
-      }
-    },
     "node_modules/lilconfig": {
       "version": "3.1.3",
       "resolved": "https://registry.npmjs.org/lilconfig/-/lilconfig-3.1.3.tgz",
diff --git a/package.json b/package.json
index cce3b4b78..fc14022dc 100644
--- a/package.json
+++ b/package.json
@@ -12,6 +12,7 @@
   "dependencies": {
     "@tauri-apps/api": "^2",
     "@tauri-apps/plugin-opener": "^2",
+    "@tauri-apps/plugin-deep-link": "^2",
     "@types/react-router-dom": "^5.3.3",
     "react": "^19.1.0",
     "react-dom": "^19.1.0",
diff --git a/src-tauri/Cargo.lock b/src-tauri/Cargo.lock
index 760d4b66d..188399b65 100644
--- a/src-tauri/Cargo.lock
+++ b/src-tauri/Cargo.lock
@@ -460,6 +460,26 @@ dependencies = [
  "crossbeam-utils",
 ]
 
+[[package]]
+name = "const-random"
+version = "0.1.18"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "87e00182fe74b066627d63b85fd550ac2998d4b0bd86bfed477a0ae4c7c71359"
+dependencies = [
+ "const-random-macro",
+]
+
+[[package]]
+name = "const-random-macro"
+version = "0.1.16"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "f9d839f2a20b0aee515dc581a6172f2321f96cab76c1a38a4c584a194955390e"
+dependencies = [
+ "getrandom 0.2.17",
+ "once_cell",
+ "tiny-keccak",
+]
+
 [[package]]
 name = "convert_case"
 version = "0.4.0"
@@ -549,6 +569,12 @@ version = "0.8.21"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "d0a5c400df2834b80a4c3327b3aad3a4c4cd4de0629063962b03235697506a28"
 
+[[package]]
+name = "crunchy"
+version = "0.2.4"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "460fbee9c2c2f33933d720630a6a0bac33ba7053db5344fac858d4b8952d77d5"
+
 [[package]]
 name = "crypto-common"
 version = "0.1.7"
@@ -735,6 +761,15 @@ dependencies = [
  "syn 2.0.114",
 ]
 
+[[package]]
+name = "dlv-list"
+version = "0.5.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "442039f5147480ba31067cb00ada1adae6892028e40e45fc5de7b7df6dcc1b5f"
+dependencies = [
+ "const-random",
+]
+
 [[package]]
 name = "dpi"
 version = "0.1.2"
@@ -1350,6 +1385,12 @@ version = "0.12.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "8a9ee70c43aaf417c914396645a0fa852624801b24ebb7ae78fe8272889ac888"
 
+[[package]]
+name = "hashbrown"
+version = "0.14.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "e5274423e17b7c9fc20b6e7e208532f9b19825d82dfd615708b70edd83df41f1"
+
 [[package]]
 name = "hashbrown"
 version = "0.16.1"
@@ -2289,6 +2330,16 @@ version = "0.2.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "04744f49eae99ab78e0d5c0b603ab218f515ea8cfe5a456d7629ad883a3b6e7d"
 
+[[package]]
+name = "ordered-multimap"
+version = "0.7.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "49203cdcae0030493bad186b28da2fa25645fa276a51b6fec8010d281e02ef79"
+dependencies = [
+ "dlv-list",
+ "hashbrown 0.14.5",
+]
+
 [[package]]
 name = "ordered-stream"
 version = "0.2.0"
@@ -2881,6 +2932,16 @@ dependencies = [
  "web-sys",
 ]
 
+[[package]]
+name = "rust-ini"
+version = "0.21.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "796e8d2b6696392a43bea58116b667fb4c29727dc5abd27d6acf338bb4f688c7"
+dependencies = [
+ "cfg-if",
+ "ordered-multimap",
+]
+
 [[package]]
 name = "rustc_version"
 version = "0.4.1"
@@ -3513,6 +3574,7 @@ dependencies = [
  "serde_json",
  "tauri",
  "tauri-build",
+ "tauri-plugin-deep-link",
  "tauri-plugin-opener",
 ]
 
@@ -3596,6 +3658,27 @@ dependencies = [
  "walkdir",
 ]
 
+[[package]]
+name = "tauri-plugin-deep-link"
+version = "2.4.6"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "444b091f24f2f6bdb4a305b54d3961f629c11861c685aceeea9a1972f89e43d5"
+dependencies = [
+ "dunce",
+ "plist",
+ "rust-ini",
+ "serde",
+ "serde_json",
+ "tauri",
+ "tauri-plugin",
+ "tauri-utils",
+ "thiserror 2.0.18",
+ "tracing",
+ "url",
+ "windows-registry",
+ "windows-result 0.3.4",
+]
+
 [[package]]
 name = "tauri-plugin-opener"
 version = "2.5.3"
@@ -3814,6 +3897,15 @@ dependencies = [
  "time-core",
 ]
 
+[[package]]
+name = "tiny-keccak"
+version = "2.0.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "2c9d3793400a45f954c52e73d068316d76b6f4e36977e3fcebb13a2721e80237"
+dependencies = [
+ "crunchy",
+]
+
 [[package]]
 name = "tinystr"
 version = "0.8.2"
@@ -4559,6 +4651,17 @@ dependencies = [
  "windows-link 0.1.3",
 ]
 
+[[package]]
+name = "windows-registry"
+version = "0.5.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "5b8a9ed28765efc97bbc954883f4e6796c33a06546ebafacbabee9696967499e"
+dependencies = [
+ "windows-link 0.1.3",
+ "windows-result 0.3.4",
+ "windows-strings 0.4.2",
+]
+
 [[package]]
 name = "windows-result"
 version = "0.3.4"
diff --git a/src-tauri/Cargo.toml b/src-tauri/Cargo.toml
index 6875383ea..22074cbd8 100644
--- a/src-tauri/Cargo.toml
+++ b/src-tauri/Cargo.toml
@@ -20,6 +20,7 @@ tauri-build = { version = "2", features = [] }
 [dependencies]
 tauri = { version = "2", features = [] }
 tauri-plugin-opener = "2"
+tauri-plugin-deep-link = "2.0.0"
 serde = { version = "1", features = ["derive"] }
 serde_json = "1"
 
diff --git a/src-tauri/capabilities/default.json b/src-tauri/capabilities/default.json
index 4cdbf49a7..ec2e275b3 100644
--- a/src-tauri/capabilities/default.json
+++ b/src-tauri/capabilities/default.json
@@ -5,6 +5,7 @@
   "windows": ["main"],
   "permissions": [
     "core:default",
-    "opener:default"
+    "opener:default",
+    "deep-link:default"
   ]
 }
diff --git a/src-tauri/src/lib.rs b/src-tauri/src/lib.rs
index 4a277ef35..bc85cc65a 100644
--- a/src-tauri/src/lib.rs
+++ b/src-tauri/src/lib.rs
@@ -4,10 +4,23 @@ fn greet(name: &str) -> String {
     format!("Hello, {}! You've been greeted from Rust!", name)
 }
 
+use tauri_plugin_deep_link::DeepLinkExt;
+
 #[cfg_attr(mobile, tauri::mobile_entry_point)]
 pub fn run() {
     tauri::Builder::default()
         .plugin(tauri_plugin_opener::init())
+        .plugin(tauri_plugin_deep_link::init())
+        .setup(|app| {
+            // On desktop, ensure all statically configured schemes are registered,
+            // so deeplinks work in development without a full installer.
+            #[cfg(any(windows, target_os = "linux"))]
+            {
+                app.deep_link().register_all()?;
+            }
+
+            Ok(())
+        })
         .invoke_handler(tauri::generate_handler![greet])
         .run(tauri::generate_context!())
         .expect("error while running tauri application");
diff --git a/src-tauri/tauri.conf.json b/src-tauri/tauri.conf.json
index 44a3c3fab..d42e8e455 100644
--- a/src-tauri/tauri.conf.json
+++ b/src-tauri/tauri.conf.json
@@ -31,5 +31,12 @@
       "icons/icon.icns",
       "icons/icon.ico"
     ]
+  },
+  "plugins": {
+    "deep-link": {
+      "desktop": {
+        "schemes": ["outsourced"]
+      }
+    }
   }
 }
diff --git a/src/main.tsx b/src/main.tsx
index 8b1ddb971..a05a0292c 100644
--- a/src/main.tsx
+++ b/src/main.tsx
@@ -2,6 +2,10 @@ import React from "react";
 import ReactDOM from "react-dom/client";
 import App from "./App";
 import "./index.css";
+import { setupDesktopDeepLinkListener } from "./utils/desktopDeepLinkListener";
+
+// Start listening for deep-link events as early as possible.
+void setupDesktopDeepLinkListener();
 
 ReactDOM.createRoot(document.getElementById("root") as HTMLElement).render(
   <React.StrictMode>
diff --git a/src/pages/Login.tsx b/src/pages/Login.tsx
index c2eca553c..bbc74a653 100644
--- a/src/pages/Login.tsx
+++ b/src/pages/Login.tsx
@@ -1,6 +1,8 @@
 import { useState } from 'react';
 import { useNavigate } from 'react-router-dom';
+import { openUrl } from '@tauri-apps/plugin-opener';
 import { countries } from '../data/countries';
+import { BACKEND_URL } from '../utils/config';
 
 const Login = () => {
   const navigate = useNavigate();
@@ -35,9 +37,12 @@ const Login = () => {
     }
   };
 
-  const handleTelegramAuth = () => {
-    // In a real app, this would handle Telegram OAuth
-    navigate('/onboarding/step1');
+  const handleTelegramAuth = async () => {
+    try {
+      await openUrl(`${BACKEND_URL}/auth/telegram?platform=desktop`);
+    } catch (error) {
+      console.error('Failed to open Telegram auth page:', error);
+    }
   };
 
   return (
diff --git a/src/utils/config.ts b/src/utils/config.ts
new file mode 100644
index 000000000..f8ebc49b2
--- /dev/null
+++ b/src/utils/config.ts
@@ -0,0 +1,2 @@
+export const BACKEND_URL =
+  import.meta.env.VITE_BACKEND_URL || 'https://api.yourapp.com';
diff --git a/src/utils/deeplink.ts b/src/utils/deeplink.ts
new file mode 100644
index 000000000..96ef6216e
--- /dev/null
+++ b/src/utils/deeplink.ts
@@ -0,0 +1,56 @@
+export type WebLoginMethod = 'phone' | 'telegram';
+
+export interface PhoneLoginContext {
+  method: 'phone';
+  phoneNumber: string;
+  countryCode: string;
+}
+
+// The shape of the Telegram user object is defined by Telegram.
+// We keep it as unknown here and let the backend interpret it.
+export interface TelegramLoginContext {
+  method: 'telegram';
+  telegramUser: unknown;
+}
+
+export type WebLoginContext = PhoneLoginContext | TelegramLoginContext;
+
+const DESKTOP_SCHEME = 'outsourced';
+
+export const buildDesktopDeeplink = (token: string): string => {
+  const encoded = encodeURIComponent(token);
+  return `${DESKTOP_SCHEME}://auth?token=${encoded}`;
+};
+
+/**
+ * Call the backend to complete the web login and obtain a short-lived token
+ * that can be handed off to the desktop app via deeplink.
+ *
+ * This expects a backend endpoint at POST /api/auth/web-complete that
+ * validates the current web session and returns `{ loginToken: string }`.
+ */
+export const completeWebLoginAndOpenDesktop = async (
+  context: WebLoginContext,
+): Promise<void> => {
+  const response = await fetch('/api/auth/web-complete', {
+    method: 'POST',
+    headers: {
+      'Content-Type': 'application/json',
+    },
+    body: JSON.stringify(context),
+    credentials: 'include',
+  });
+
+  if (!response.ok) {
+    throw new Error('Failed to complete web login for desktop handoff');
+  }
+
+  const data = (await response.json()) as { loginToken?: string };
+  if (!data.loginToken) {
+    throw new Error('Backend response did not include a loginToken');
+  }
+
+  const deeplink = buildDesktopDeeplink(data.loginToken);
+  window.location.href = deeplink;
+};
+
diff --git a/src/utils/desktopDeepLinkListener.ts b/src/utils/desktopDeepLinkListener.ts
new file mode 100644
index 000000000..61b306506
--- /dev/null
+++ b/src/utils/desktopDeepLinkListener.ts
@@ -0,0 +1,82 @@
+import { getCurrent, onOpenUrl } from '@tauri-apps/plugin-deep-link';
+import { BACKEND_URL } from './config';
+
+/**
+ * Handle a list of deep link URLs delivered by the Tauri deep-link plugin.
+ * Parses `outsourced://auth?token=...` URLs and exchanges the token for a
+ * desktop session via the backend.
+ */
+const handleDeepLinkUrls = async (urls: string[] | null | undefined) => {
+  if (!urls || urls.length === 0) {
+    return;
+  }
+
+  const url = urls[0];
+
+  try {
+    const parsed = new URL(url);
+    if (parsed.protocol !== 'outsourced:') {
+      return;
+    }
+
+    const token = parsed.searchParams.get('token');
+    if (!token) {
+      console.warn('Deep link URL did not contain a token query parameter');
+      return;
+    }
+
+    const response = await fetch(`${BACKEND_URL}/api/auth/desktop-exchange`, {
+      method: 'POST',
+      headers: { 'Content-Type': 'application/json' },
+      body: JSON.stringify({ token }),
+    });
+
+    if (!response.ok) {
+      console.error('Token exchange failed:', response.status);
+      return;
+    }
+
+    const data = (await response.json()) as {
+      sessionToken?: string;
+      user?: { id: string; username: string; firstName?: string };
+    };
+
+    if (!data.sessionToken) {
+      console.error('Backend did not return a sessionToken');
+      return;
+    }
+
+    // Persist session so the app can use it after navigation.
+    localStorage.setItem('sessionToken', data.sessionToken);
+    if (data.user) {
+      localStorage.setItem('user', JSON.stringify(data.user));
+    }
+
+    // Navigate to post-login flow. This listener runs outside the React
+    // router context, so we assign the path directly and reload.
+    window.location.replace('/onboarding/step1');
+  } catch (error) {
+    console.error('Failed to handle deep link URL:', url, error);
+  }
+};
+
+/**
+ * Set up listeners for deep links so that when the desktop app is opened
+ * via a URL like `outsourced://auth?token=...`, we can react to it.
+ */
+export const setupDesktopDeepLinkListener = async () => {
+  // Guard against running in plain web browser without Tauri.
+  if (!(window as any).__TAURI__) {
+    return;
+  }
+
+  const startUrls = await getCurrent();
+  if (startUrls) {
+    await handleDeepLinkUrls(startUrls);
+  }
+
+  await onOpenUrl(event => {
+    void handleDeepLinkUrls(event);
+  });
+};
+