diff --git a/package-lock.json b/package-lock.json
index 3e2892f..e5881b2 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1,17 +1,22 @@
 {
-  "name": "cad",
+  "name": "dossier",
   "version": "0.0.0",
   "lockfileVersion": 3,
   "requires": true,
   "packages": {
     "": {
-      "name": "cad",
+      "name": "dossier",
       "version": "0.0.0",
+      "license": "AGPL-3.0-or-later",
       "dependencies": {
         "@mlightcad/libredwg-web": "^0.7.7",
         "@tauri-apps/api": "^2.11.1",
         "@tauri-apps/plugin-dialog": "^2.7.1",
         "@tauri-apps/plugin-fs": "^2.5.1",
+        "@tauri-apps/plugin-http": "^2.5.9",
+        "@tauri-apps/plugin-process": "^2.3.1",
+        "@tauri-apps/plugin-shell": "^2.3.5",
+        "@tauri-apps/plugin-updater": "^2.10.1",
         "delaunator": "^5.1.0",
         "dxf-parser": "^1.1.2",
         "jspdf": "^4.2.1",
@@ -1862,6 +1867,42 @@
         "@tauri-apps/api": "^2.11.0"
       }
     },
+    "node_modules/@tauri-apps/plugin-http": {
+      "version": "2.5.9",
+      "resolved": "https://registry.npmjs.org/@tauri-apps/plugin-http/-/plugin-http-2.5.9.tgz",
+      "integrity": "sha512-lCiY0+vs4HvIUSvZrBs8TC3TiCB0MOPRmiUjTq4prW7SlcJE2jdLeT6KBsJrT9Tlplufl7W1pY6SFAO3gCWxDA==",
+      "license": "MIT OR Apache-2.0",
+      "dependencies": {
+        "@tauri-apps/api": "^2.11.0"
+      }
+    },
+    "node_modules/@tauri-apps/plugin-process": {
+      "version": "2.3.1",
+      "resolved": "https://registry.npmjs.org/@tauri-apps/plugin-process/-/plugin-process-2.3.1.tgz",
+      "integrity": "sha512-nCa4fGVaDL/B9ai03VyPOjfAHRHSBz5v6F/ObsB73r/dA3MHHhZtldaDMIc0V/pnUw9ehzr2iEG+XkSEyC0JJA==",
+      "license": "MIT OR Apache-2.0",
+      "dependencies": {
+        "@tauri-apps/api": "^2.8.0"
+      }
+    },
+    "node_modules/@tauri-apps/plugin-shell": {
+      "version": "2.3.5",
+      "resolved": "https://registry.npmjs.org/@tauri-apps/plugin-shell/-/plugin-shell-2.3.5.tgz",
+      "integrity": "sha512-jewtULhiQ7lI7+owCKAjc8tYLJr92U16bPOeAa472LHJdgaibLP83NcfAF2e+wkEcA53FxKQAZ7byDzs2eeizg==",
+      "license": "MIT OR Apache-2.0",
+      "dependencies": {
+        "@tauri-apps/api": "^2.10.1"
+      }
+    },
+    "node_modules/@tauri-apps/plugin-updater": {
+      "version": "2.10.1",
+      "resolved": "https://registry.npmjs.org/@tauri-apps/plugin-updater/-/plugin-updater-2.10.1.tgz",
+      "integrity": "sha512-NFYMg+tWOZPJdzE/PpFj2qfqwAWwNS3kXrb1tm1gnBJ9mYzZ4WDRrwy8udzWoAnfGCHLuePNLY1WVCNHnh3eRA==",
+      "license": "MIT OR Apache-2.0",
+      "dependencies": {
+        "@tauri-apps/api": "^2.10.1"
+      }
+    },
     "node_modules/@tweenjs/tween.js": {
       "version": "23.1.3",
       "resolved": "https://registry.npmjs.org/@tweenjs/tween.js/-/tween.js-23.1.3.tgz",
diff --git a/package.json b/package.json
index 9ef7e72..581e50d 100644
--- a/package.json
+++ b/package.json
@@ -29,6 +29,10 @@
     "@tauri-apps/api": "^2.11.1",
     "@tauri-apps/plugin-dialog": "^2.7.1",
     "@tauri-apps/plugin-fs": "^2.5.1",
+    "@tauri-apps/plugin-http": "^2.5.9",
+    "@tauri-apps/plugin-process": "^2.3.1",
+    "@tauri-apps/plugin-shell": "^2.3.5",
+    "@tauri-apps/plugin-updater": "^2.10.1",
     "delaunator": "^5.1.0",
     "dxf-parser": "^1.1.2",
     "jspdf": "^4.2.1",
diff --git a/src-tauri/Cargo.lock b/src-tauri/Cargo.lock
index 59874da..4fcb92f 100644
--- a/src-tauri/Cargo.lock
+++ b/src-tauri/Cargo.lock
@@ -157,6 +157,15 @@ version = "1.0.103"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "2a4385e2e34eb35d6b3efe798b9eb88096925d87726c0798709bf56d9ed84af3"
 
+[[package]]
+name = "arbitrary"
+version = "1.4.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "c3d036a3c4ab069c7b410a2ce876bd74808d2d0888a82667669f8e783a898bf1"
+dependencies = [
+ "derive_arbitrary",
+]
+
 [[package]]
 name = "arrayref"
 version = "0.3.9"
@@ -395,6 +404,10 @@ dependencies = [
  "tauri-build",
  "tauri-plugin-dialog",
  "tauri-plugin-fs",
+ "tauri-plugin-http",
+ "tauri-plugin-process",
+ "tauri-plugin-shell",
+ "tauri-plugin-updater",
  "wgpu",
  "winit",
 ]
@@ -543,6 +556,17 @@ version = "0.2.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "613afe47fcd5fac7ccf1db93babcb082c5994d996f20b8b159f2ad1658eb5724"
 
+[[package]]
+name = "chacha20"
+version = "0.10.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "d524456ba66e72eb8b115ff89e01e497f8e6d11d78b70b1aa13c0fbd97540a81"
+dependencies = [
+ "cfg-if",
+ "cpufeatures 0.3.0",
+ "rand_core",
+]
+
 [[package]]
 name = "chrono"
 version = "0.4.45"
@@ -607,10 +631,29 @@ version = "0.18.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "4ddef33a339a91ea89fb53151bd0a4689cfce27055c291dfa69945475d22c747"
 dependencies = [
+ "percent-encoding",
  "time",
  "version_check",
 ]
 
+[[package]]
+name = "cookie_store"
+version = "0.22.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "15b2c103cf610ec6cae3da84a766285b42fd16aad564758459e6ecf128c75206"
+dependencies = [
+ "cookie",
+ "document-features",
+ "idna",
+ "log",
+ "publicsuffix",
+ "serde",
+ "serde_derive",
+ "serde_json",
+ "time",
+ "url",
+]
+
 [[package]]
 name = "core-foundation"
 version = "0.9.4"
@@ -727,6 +770,15 @@ dependencies = [
  "libc",
 ]
 
+[[package]]
+name = "cpufeatures"
+version = "0.3.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "8b2a41393f66f16b0823bb79094d54ac5fbd34ab292ddafb9a0456ac9f87d201"
+dependencies = [
+ "libc",
+]
+
 [[package]]
 name = "crc32fast"
 version = "1.5.0"
@@ -846,6 +898,12 @@ dependencies = [
  "syn 2.0.118",
 ]
 
+[[package]]
+name = "data-url"
+version = "0.3.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "be1e0bca6c3637f992fc1cc7cbc52a78c1ef6db076dbf1059c4323d6a2048376"
+
 [[package]]
 name = "dbus"
 version = "0.9.11"
@@ -898,6 +956,17 @@ dependencies = [
  "serde_core",
 ]
 
+[[package]]
+name = "derive_arbitrary"
+version = "1.4.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "1e567bd82dcff979e4b03460c307b3cdc9e96fde3d73bed1496d2bc75d9dd62a"
+dependencies = [
+ "proc-macro2",
+ "quote",
+ "syn 2.0.118",
+]
+
 [[package]]
 name = "derive_more"
 version = "2.1.1"
@@ -1112,6 +1181,15 @@ version = "1.2.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "4ef6b89e5b37196644d8796de5268852ff179b44e96276cf4290264843743bb7"
 
+[[package]]
+name = "encoding_rs"
+version = "0.8.35"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "75030f3c4f45dafd7586dd6780965a8c7e8e285a5ecb86713e63a79c5b2766f3"
+dependencies = [
+ "cfg-if",
+]
+
 [[package]]
 name = "env_filter"
 version = "2.0.0"
@@ -1205,6 +1283,16 @@ dependencies = [
  "rustc_version",
 ]
 
+[[package]]
+name = "filetime"
+version = "0.2.29"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "5c287a33c7f0a620c38e641e7f60827713987b3c0f26e8ddc9462cc69cf75759"
+dependencies = [
+ "cfg-if",
+ "libc",
+]
+
 [[package]]
 name = "find-msvc-tools"
 version = "0.1.9"
@@ -1524,8 +1612,10 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "ff2abc00be7fca6ebc474524697ae276ad847ad0a6b3faa4bcb027e9a4614ad0"
 dependencies = [
  "cfg-if",
+ "js-sys",
  "libc",
  "wasi",
+ "wasm-bindgen",
 ]
 
 [[package]]
@@ -1547,8 +1637,11 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "300e883d756b2e4ec94e02791f39b04b522276138852cfc41d9fb7e904106099"
 dependencies = [
  "cfg-if",
+ "js-sys",
  "libc",
  "r-efi 6.0.0",
+ "rand_core",
+ "wasm-bindgen",
 ]
 
 [[package]]
@@ -1778,6 +1871,25 @@ dependencies = [
  "syn 2.0.118",
 ]
 
+[[package]]
+name = "h2"
+version = "0.4.15"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "6cb093c84e8bd9b188d4c4a8cb6579fc016968d14c99882163cd3ff402a4f155"
+dependencies = [
+ "atomic-waker",
+ "bytes",
+ "fnv",
+ "futures-core",
+ "futures-sink",
+ "http",
+ "indexmap 2.14.0",
+ "slab",
+ "tokio",
+ "tokio-util",
+ "tracing",
+]
+
 [[package]]
 name = "half"
 version = "2.7.1"
@@ -1924,6 +2036,7 @@ dependencies = [
  "bytes",
  "futures-channel",
  "futures-core",
+ "h2",
  "http",
  "http-body",
  "httparse",
@@ -1934,6 +2047,22 @@ dependencies = [
  "want",
 ]
 
+[[package]]
+name = "hyper-rustls"
+version = "0.27.9"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "33ca68d021ef39cf6463ab54c1d0f5daf03377b70561305bb89a8f83aab66e0f"
+dependencies = [
+ "http",
+ "hyper",
+ "hyper-util",
+ "rustls",
+ "tokio",
+ "tokio-rustls",
+ "tower-service",
+ "webpki-roots",
+]
+
 [[package]]
 name = "hyper-util"
 version = "0.1.20"
@@ -1952,9 +2081,11 @@ dependencies = [
  "percent-encoding",
  "pin-project-lite",
  "socket2",
+ "system-configuration",
  "tokio",
  "tower-service",
  "tracing",
+ "windows-registry",
 ]
 
 [[package]]
@@ -2151,6 +2282,25 @@ version = "2.12.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "d98f6fed1fde3f8c21bc40a1abb88dd75e67924f9cffc3ef95607bad8017f8e2"
 
+[[package]]
+name = "is-docker"
+version = "0.2.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "928bae27f42bc99b60d9ac7334e3a21d10ad8f1835a4e12ec3ec0464765ed1b3"
+dependencies = [
+ "once_cell",
+]
+
+[[package]]
+name = "is-wsl"
+version = "0.4.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "173609498df190136aa7dea1a91db051746d339e18476eed5ca40521f02d7aa5"
+dependencies = [
+ "is-docker",
+ "once_cell",
+]
+
 [[package]]
 name = "is_terminal_polyfill"
 version = "1.70.2"
@@ -2484,6 +2634,12 @@ version = "0.16.4"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "7f66e8d5d03f609abc3a39e6f08e4164ebf1447a732906d39eb9b99b7919ef39"
 
+[[package]]
+name = "lru-slab"
+version = "0.1.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "112b39cec0b298b6c1999fee3e31427f74f676e4cb9879ed1a121b43661a4154"
+
 [[package]]
 name = "markup5ever"
 version = "0.38.0"
@@ -2525,6 +2681,12 @@ version = "0.3.17"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "6877bb514081ee2a7ff5ef9de3281f14a4dd4bceac4c09388074a6b5df8a139a"
 
+[[package]]
+name = "minisign-verify"
+version = "0.2.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "22f9645cb765ea72b8111f36c522475d2daa0d22c957a9826437e97534bc4e9e"
+
 [[package]]
 name = "miniz_oxide"
 version = "0.8.9"
@@ -2957,6 +3119,18 @@ dependencies = [
  "objc2-foundation 0.3.2",
 ]
 
+[[package]]
+name = "objc2-osa-kit"
+version = "0.3.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "f112d1746737b0da274ef79a23aac283376f335f4095a083a267a082f21db0c0"
+dependencies = [
+ "bitflags 2.13.0",
+ "objc2 0.6.4",
+ "objc2-app-kit 0.3.2",
+ "objc2-foundation 0.3.2",
+]
+
 [[package]]
 name = "objc2-quartz-core"
 version = "0.2.2"
@@ -3095,6 +3269,23 @@ version = "1.70.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "384b8ab6d37215f3c5301a95a4accb5d64aa607f1fcb26a11b5303878451b4fe"
 
+[[package]]
+name = "open"
+version = "5.4.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "a0b3d059e795d52b8a72fef45658620edd4d9c359b338564aa14391ffa511ed5"
+dependencies = [
+ "dunce",
+ "is-wsl",
+ "libc",
+]
+
+[[package]]
+name = "openssl-probe"
+version = "0.2.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "7c87def4c32ab89d880effc9e097653c8da5d6ef28e6b539d313baaacfbafcbe"
+
 [[package]]
 name = "option-ext"
 version = "0.2.0"
@@ -3120,6 +3311,30 @@ dependencies = [
  "num-traits",
 ]
 
+[[package]]
+name = "os_pipe"
+version = "1.2.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "7d8fae84b431384b68627d0f9b3b1245fcf9f46f6c0e3dc902e9dce64edd1967"
+dependencies = [
+ "libc",
+ "windows-sys 0.61.2",
+]
+
+[[package]]
+name = "osakit"
+version = "0.3.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "732c71caeaa72c065bb69d7ea08717bd3f4863a4f451402fc9513e29dbd5261b"
+dependencies = [
+ "objc2 0.6.4",
+ "objc2-foundation 0.3.2",
+ "objc2-osa-kit",
+ "serde",
+ "serde_json",
+ "thiserror 2.0.18",
+]
+
 [[package]]
 name = "owned_ttf_parser"
 version = "0.25.1"
@@ -3465,6 +3680,22 @@ version = "1.0.18"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "3d595e54a326bc53c1c197b32d295e14b169e3cfeaa8dc82b529f947fba6bcf5"
 
+[[package]]
+name = "psl-types"
+version = "2.0.11"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "33cb294fe86a74cbcf50d4445b37da762029549ebeea341421c7c70370f86cac"
+
+[[package]]
+name = "publicsuffix"
+version = "2.3.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "6f42ea446cab60335f76979ec15e12619a2165b5ae2c12166bef27d283a9fadf"
+dependencies = [
+ "idna",
+ "psl-types",
+]
+
 [[package]]
 name = "pxfm"
 version = "0.1.29"
@@ -3480,6 +3711,62 @@ dependencies = [
  "memchr",
 ]
 
+[[package]]
+name = "quinn"
+version = "0.11.11"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "0c1a41e437b6bbd489372cd4971de128e85c855f56c57f283d20ff016cf7c0a8"
+dependencies = [
+ "bytes",
+ "cfg_aliases",
+ "pin-project-lite",
+ "quinn-proto",
+ "quinn-udp",
+ "rustc-hash 2.1.3",
+ "rustls",
+ "socket2",
+ "thiserror 2.0.18",
+ "tokio",
+ "tracing",
+ "web-time",
+]
+
+[[package]]
+name = "quinn-proto"
+version = "0.11.16"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "2f4bfc015262b9df63c8845072ce59068853ff5872180c2ce2f13038b970e560"
+dependencies = [
+ "bytes",
+ "getrandom 0.4.3",
+ "lru-slab",
+ "rand",
+ "rand_pcg",
+ "ring",
+ "rustc-hash 2.1.3",
+ "rustls",
+ "rustls-pki-types",
+ "slab",
+ "thiserror 2.0.18",
+ "tinyvec",
+ "tracing",
+ "web-time",
+]
+
+[[package]]
+name = "quinn-udp"
+version = "0.5.15"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "35a133f956daabe89a61a685c2649f13d82d5aa4bd5d12d1277e1072a21c0694"
+dependencies = [
+ "cfg_aliases",
+ "libc",
+ "once_cell",
+ "socket2",
+ "tracing",
+ "windows-sys 0.61.2",
+]
+
 [[package]]
 name = "quote"
 version = "1.0.46"
@@ -3501,6 +3788,32 @@ version = "6.0.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "f8dcc9c7d52a811697d2151c701e0d08956f92b0e24136cf4cf27b57a6a0d9bf"
 
+[[package]]
+name = "rand"
+version = "0.10.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "c7f5fa3a058cd35567ef9bfa5e75732bee0f9e4c55fa90477bef2dfcdbc4be80"
+dependencies = [
+ "chacha20",
+ "getrandom 0.4.3",
+ "rand_core",
+]
+
+[[package]]
+name = "rand_core"
+version = "0.10.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "63b8176103e19a2643978565ca18b50549f6101881c443590420e4dc998a3c69"
+
+[[package]]
+name = "rand_pcg"
+version = "0.10.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "caa0f4137e1c0a72f4c651489402276c8e8e1cf081f3b0ba156d2cbeef09e86a"
+dependencies = [
+ "rand_core",
+]
+
 [[package]]
 name = "range-alloc"
 version = "0.1.5"
@@ -3685,6 +3998,49 @@ version = "1.1.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "19b30a45b0cd0bcca8037f3d0dc3421eaf95327a17cad11964fb8179b4fc4832"
 
+[[package]]
+name = "reqwest"
+version = "0.12.28"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "eddd3ca559203180a307f12d114c268abf583f59b03cb906fd0b3ff8646c1147"
+dependencies = [
+ "base64 0.22.1",
+ "bytes",
+ "cookie",
+ "cookie_store",
+ "encoding_rs",
+ "futures-core",
+ "h2",
+ "http",
+ "http-body",
+ "http-body-util",
+ "hyper",
+ "hyper-rustls",
+ "hyper-util",
+ "js-sys",
+ "log",
+ "mime",
+ "percent-encoding",
+ "pin-project-lite",
+ "quinn",
+ "rustls",
+ "rustls-pki-types",
+ "serde",
+ "serde_json",
+ "serde_urlencoded",
+ "sync_wrapper",
+ "tokio",
+ "tokio-rustls",
+ "tower",
+ "tower-http",
+ "tower-service",
+ "url",
+ "wasm-bindgen",
+ "wasm-bindgen-futures",
+ "web-sys",
+ "webpki-roots",
+]
+
 [[package]]
 name = "reqwest"
 version = "0.13.4"
@@ -3699,15 +4055,20 @@ dependencies = [
  "http-body",
  "http-body-util",
  "hyper",
+ "hyper-rustls",
  "hyper-util",
  "js-sys",
  "log",
  "percent-encoding",
  "pin-project-lite",
+ "rustls",
+ "rustls-pki-types",
+ "rustls-platform-verifier",
  "serde",
  "serde_json",
  "sync_wrapper",
  "tokio",
+ "tokio-rustls",
  "tokio-util",
  "tower",
  "tower-http",
@@ -3743,6 +4104,20 @@ dependencies = [
  "windows-sys 0.60.2",
 ]
 
+[[package]]
+name = "ring"
+version = "0.17.14"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "a4689e6c2294d81e88dc6261c768b63bc4fcdb852be6d1352498b114f61383b7"
+dependencies = [
+ "cc",
+ "cfg-if",
+ "getrandom 0.2.17",
+ "libc",
+ "untrusted",
+ "windows-sys 0.52.0",
+]
+
 [[package]]
 name = "roxmltree"
 version = "0.20.0"
@@ -3796,12 +4171,92 @@ dependencies = [
  "windows-sys 0.61.2",
 ]
 
+[[package]]
+name = "rustls"
+version = "0.23.43"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "0283386ce02abc0151e1761d08802dfe86c173b0b494af5cbc086574e453da06"
+dependencies = [
+ "once_cell",
+ "ring",
+ "rustls-pki-types",
+ "rustls-webpki",
+ "subtle",
+ "zeroize",
+]
+
+[[package]]
+name = "rustls-native-certs"
+version = "0.8.4"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "dab5152771c58876a2146916e53e35057e1a4dfa2b9df0f0305b07f611fdea4d"
+dependencies = [
+ "openssl-probe",
+ "rustls-pki-types",
+ "schannel",
+ "security-framework",
+]
+
+[[package]]
+name = "rustls-pki-types"
+version = "1.15.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "2f4925028c7eb5d1fcdaf196971378ed9d2c1c4efc7dc5d011256f76c99c0a96"
+dependencies = [
+ "web-time",
+ "zeroize",
+]
+
+[[package]]
+name = "rustls-platform-verifier"
+version = "0.7.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "26d1e2536ce4f35f4846aa13bff16bd0ff40157cdb14cc056c7b14ba41233ba0"
+dependencies = [
+ "core-foundation 0.10.1",
+ "core-foundation-sys",
+ "jni 0.22.4",
+ "log",
+ "once_cell",
+ "rustls",
+ "rustls-native-certs",
+ "rustls-platform-verifier-android",
+ "rustls-webpki",
+ "security-framework",
+ "security-framework-sys",
+ "webpki-root-certs",
+ "windows-sys 0.61.2",
+]
+
+[[package]]
+name = "rustls-platform-verifier-android"
+version = "0.1.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "f87165f0995f63a9fbeea62b64d10b4d9d8e78ec6d7d51fb2125fda7bb36788f"
+
+[[package]]
+name = "rustls-webpki"
+version = "0.103.13"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "61c429a8649f110dddef65e2a5ad240f747e85f7758a6bccc7e5777bd33f756e"
+dependencies = [
+ "ring",
+ "rustls-pki-types",
+ "untrusted",
+]
+
 [[package]]
 name = "rustversion"
 version = "1.0.22"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "b39cdef0fa800fc44525c84ccb54a029961a8215f9619753635a9c0d2538d46d"
 
+[[package]]
+name = "ryu"
+version = "1.0.23"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "9774ba4a74de5f7b1c1451ed6cd5285a32eddb5cccb8cc655a4e50009e06477f"
+
 [[package]]
 name = "same-file"
 version = "1.0.6"
@@ -3811,6 +4266,15 @@ dependencies = [
  "winapi-util",
 ]
 
+[[package]]
+name = "schannel"
+version = "0.1.29"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "91c1b7e4904c873ef0710c1f407dde2e6287de2bebc1bbbf7d430bb7cbffd939"
+dependencies = [
+ "windows-sys 0.61.2",
+]
+
 [[package]]
 name = "schemars"
 version = "0.8.22"
@@ -3887,6 +4351,29 @@ dependencies = [
  "tiny-skia",
 ]
 
+[[package]]
+name = "security-framework"
+version = "3.7.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "b7f4bc775c73d9a02cde8bf7b2ec4c9d12743edf609006c7facc23998404cd1d"
+dependencies = [
+ "bitflags 2.13.0",
+ "core-foundation 0.10.1",
+ "core-foundation-sys",
+ "libc",
+ "security-framework-sys",
+]
+
+[[package]]
+name = "security-framework-sys"
+version = "2.17.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "6ce2691df843ecc5d231c0b14ece2acc3efb62c0a398c7e1d875f3983ce020e3"
+dependencies = [
+ "core-foundation-sys",
+ "libc",
+]
+
 [[package]]
 name = "selectors"
 version = "0.36.1"
@@ -4017,6 +4504,18 @@ dependencies = [
  "serde_core",
 ]
 
+[[package]]
+name = "serde_urlencoded"
+version = "0.7.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "d3491c14715ca2294c4d6a88f15e84739788c1d030eed8c110436aafdaa2f3fd"
+dependencies = [
+ "form_urlencoded",
+ "itoa",
+ "ryu",
+ "serde",
+]
+
 [[package]]
 name = "serde_with"
 version = "3.21.0"
@@ -4087,16 +4586,58 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "a7507d819769d01a365ab707794a4084392c824f54a7a6a7862f8c3d0892b283"
 dependencies = [
  "cfg-if",
- "cpufeatures",
+ "cpufeatures 0.2.17",
  "digest",
 ]
 
+[[package]]
+name = "shared_child"
+version = "1.1.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "1e362d9935bc50f019969e2f9ecd66786612daae13e8f277be7bfb66e8bed3f7"
+dependencies = [
+ "libc",
+ "sigchld",
+ "windows-sys 0.60.2",
+]
+
 [[package]]
 name = "shlex"
 version = "2.0.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "f8fadd59c855ef2080decdef8ff161eb6661b86933c9d82e5ba29dc602a55aba"
 
+[[package]]
+name = "sigchld"
+version = "0.2.4"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "47106eded3c154e70176fc83df9737335c94ce22f821c32d17ed1db1f83badb1"
+dependencies = [
+ "libc",
+ "os_pipe",
+ "signal-hook",
+]
+
+[[package]]
+name = "signal-hook"
+version = "0.3.18"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "d881a16cf4426aa584979d30bd82cb33429027e42122b169753d6ef1085ed6e2"
+dependencies = [
+ "libc",
+ "signal-hook-registry",
+]
+
+[[package]]
+name = "signal-hook-registry"
+version = "1.4.8"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "c4db69cba1110affc0e9f7bcd48bbf87b3f4fc7c61fc9155afd4c469eb3d6c1b"
+dependencies = [
+ "errno",
+ "libc",
+]
+
 [[package]]
 name = "simd-adler32"
 version = "0.3.9"
@@ -4321,6 +4862,12 @@ version = "0.11.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "7da8b5736845d9f2fcb837ea5d9e2628564b3b043a70948a3f0b778838c5fb4f"
 
+[[package]]
+name = "subtle"
+version = "2.6.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "13c2bddecc57b384dee18652358fb23172facb8a2c51ccc10d74c157bdea3292"
+
 [[package]]
 name = "swash"
 version = "0.2.9"
@@ -4364,6 +4911,17 @@ dependencies = [
  "unicode-ident",
 ]
 
+[[package]]
+name = "syn"
+version = "3.0.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "53e9bae58849f64dfa4f5d5ae372c8341f7305f82a3868709269343628b659a3"
+dependencies = [
+ "proc-macro2",
+ "quote",
+ "unicode-ident",
+]
+
 [[package]]
 name = "sync_wrapper"
 version = "1.0.2"
@@ -4393,6 +4951,27 @@ dependencies = [
  "libc",
 ]
 
+[[package]]
+name = "system-configuration"
+version = "0.7.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "a13f3d0daba03132c0aa9767f98351b3488edc2c100cda2d2ec2b04f3d8d3c8b"
+dependencies = [
+ "bitflags 2.13.0",
+ "core-foundation 0.9.4",
+ "system-configuration-sys",
+]
+
+[[package]]
+name = "system-configuration-sys"
+version = "0.6.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "8e1d1b10ced5ca923a1fcb8d03e96b8d3268065d724548c0211415ff6ac6bac4"
+dependencies = [
+ "core-foundation-sys",
+ "libc",
+]
+
 [[package]]
 name = "system-deps"
 version = "6.2.2"
@@ -4457,6 +5036,17 @@ dependencies = [
  "syn 2.0.118",
 ]
 
+[[package]]
+name = "tar"
+version = "0.4.46"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "3f6221d9a6003c78398e3b239969f352578258df48c8eb051caadae0015bc840"
+dependencies = [
+ "filetime",
+ "libc",
+ "xattr",
+]
+
 [[package]]
 name = "target-lexicon"
 version = "0.12.16"
@@ -4493,7 +5083,7 @@ dependencies = [
  "percent-encoding",
  "plist",
  "raw-window-handle",
- "reqwest",
+ "reqwest 0.13.4",
  "serde",
  "serde_json",
  "serde_repr",
@@ -4634,6 +5224,94 @@ dependencies = [
  "url",
 ]
 
+[[package]]
+name = "tauri-plugin-http"
+version = "2.5.9"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "b5bd512048e1985b7ec78f96d99083e2ddaf7e0d906b2b63c44ce5bb8b894067"
+dependencies = [
+ "bytes",
+ "cookie_store",
+ "data-url",
+ "http",
+ "regex",
+ "reqwest 0.12.28",
+ "schemars 0.8.22",
+ "serde",
+ "serde_json",
+ "tauri",
+ "tauri-plugin",
+ "tauri-plugin-fs",
+ "thiserror 2.0.18",
+ "tokio",
+ "url",
+ "urlpattern",
+]
+
+[[package]]
+name = "tauri-plugin-process"
+version = "2.3.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "d55511a7bf6cd70c8767b02c97bf8134fa434daf3926cfc1be0a0f94132d165a"
+dependencies = [
+ "tauri",
+ "tauri-plugin",
+]
+
+[[package]]
+name = "tauri-plugin-shell"
+version = "2.3.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "8457dbf9e2bab1edd8df22bb2c20857a59a9868e79cb3eac5ed639eec4d0c73b"
+dependencies = [
+ "encoding_rs",
+ "log",
+ "open",
+ "os_pipe",
+ "regex",
+ "schemars 0.8.22",
+ "serde",
+ "serde_json",
+ "shared_child",
+ "tauri",
+ "tauri-plugin",
+ "thiserror 2.0.18",
+ "tokio",
+]
+
+[[package]]
+name = "tauri-plugin-updater"
+version = "2.10.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "806d9dac662c2e4594ff03c647a552f2c9bd544e7d0f683ec58f872f952ce4af"
+dependencies = [
+ "base64 0.22.1",
+ "dirs",
+ "flate2",
+ "futures-util",
+ "http",
+ "infer",
+ "log",
+ "minisign-verify",
+ "osakit",
+ "percent-encoding",
+ "reqwest 0.13.4",
+ "rustls",
+ "semver",
+ "serde",
+ "serde_json",
+ "tar",
+ "tauri",
+ "tauri-plugin",
+ "tempfile",
+ "thiserror 2.0.18",
+ "time",
+ "tokio",
+ "url",
+ "windows-sys 0.60.2",
+ "zip",
+]
+
 [[package]]
 name = "tauri-runtime"
 version = "2.11.3"
@@ -4734,6 +5412,19 @@ dependencies = [
  "toml 1.1.2+spec-1.1.0",
 ]
 
+[[package]]
+name = "tempfile"
+version = "3.27.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "32497e9a4c7b38532efcdebeef879707aa9f794296a4f0244f6f69e9bc8574bd"
+dependencies = [
+ "fastrand",
+ "getrandom 0.4.3",
+ "once_cell",
+ "rustix 1.1.4",
+ "windows-sys 0.61.2",
+]
+
 [[package]]
 name = "tendril"
 version = "0.5.0"
@@ -4884,9 +5575,31 @@ dependencies = [
  "mio",
  "pin-project-lite",
  "socket2",
+ "tokio-macros",
  "windows-sys 0.61.2",
 ]
 
+[[package]]
+name = "tokio-macros"
+version = "2.7.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "78773a2a397f451582ce068015985c33193cf6dea8b74d2a639fe457b2f07b0e"
+dependencies = [
+ "proc-macro2",
+ "quote",
+ "syn 3.0.3",
+]
+
+[[package]]
+name = "tokio-rustls"
+version = "0.26.4"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "1729aa945f29d91ba541258c8df89027d5792d85a8841fb65e8bf0f4ede4ef61"
+dependencies = [
+ "rustls",
+ "tokio",
+]
+
 [[package]]
 name = "tokio-util"
 version = "0.7.18"
@@ -5210,6 +5923,12 @@ version = "0.2.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "b4ac048d71ede7ee76d585517add45da530660ef4390e49b098733c6e897f254"
 
+[[package]]
+name = "untrusted"
+version = "0.9.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "8ecb6da28b8a351d773b68d5825ac39017e680750f980f3a1a85cd8dd28a47c1"
+
 [[package]]
 name = "url"
 version = "2.5.8"
@@ -5584,6 +6303,24 @@ dependencies = [
  "system-deps",
 ]
 
+[[package]]
+name = "webpki-root-certs"
+version = "1.0.9"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "b96554aa2acc8ccdb7e1c9a58a7a68dd5d13bccc69cd124cb09406db612a1c9b"
+dependencies = [
+ "rustls-pki-types",
+]
+
+[[package]]
+name = "webpki-roots"
+version = "1.0.9"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "7dcd9d09a39985f5344844e66b0c530a33843579125f23e21e9f0f220850f22a"
+dependencies = [
+ "rustls-pki-types",
+]
+
 [[package]]
 name = "webview2-com"
 version = "0.38.2"
@@ -5979,6 +6716,17 @@ dependencies = [
  "windows-link 0.2.1",
 ]
 
+[[package]]
+name = "windows-registry"
+version = "0.6.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "02752bf7fbdcce7f2a27a742f798510f3e5ad88dbe84871e5168e2120c3d5720"
+dependencies = [
+ "windows-link 0.2.1",
+ "windows-result 0.4.1",
+ "windows-strings 0.5.1",
+]
+
 [[package]]
 name = "windows-result"
 version = "0.3.4"
@@ -6457,6 +7205,16 @@ version = "0.13.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "ea6fc2961e4ef194dcbfe56bb845534d0dc8098940c7e5c012a258bfec6701bd"
 
+[[package]]
+name = "xattr"
+version = "1.6.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "32e45ad4206f6d2479085147f02bc2ef834ac85886624a23575ae137c8aa8156"
+dependencies = [
+ "libc",
+ "rustix 1.1.4",
+]
+
 [[package]]
 name = "xcursor"
 version = "0.3.10"
@@ -6564,6 +7322,12 @@ dependencies = [
  "synstructure",
 ]
 
+[[package]]
+name = "zeroize"
+version = "1.9.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "e13c156562582aa81c60cb29407084cdb54c4164760106ab78e6c5b0858cf64e"
+
 [[package]]
 name = "zerotrie"
 version = "0.2.4"
@@ -6597,6 +7361,18 @@ dependencies = [
  "syn 2.0.118",
 ]
 
+[[package]]
+name = "zip"
+version = "4.6.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "caa8cd6af31c3b31c6631b8f483848b91589021b28fffe50adada48d4f4d2ed1"
+dependencies = [
+ "arbitrary",
+ "crc32fast",
+ "indexmap 2.14.0",
+ "memchr",
+]
+
 [[package]]
 name = "zmij"
 version = "1.0.21"
diff --git a/src-tauri/Cargo.toml b/src-tauri/Cargo.toml
index fc9d8c3..749fe60 100644
--- a/src-tauri/Cargo.toml
+++ b/src-tauri/Cargo.toml
@@ -39,6 +39,10 @@ tauri-build = { version = "2", features = [] }
 tauri = { version = "2", features = [] }
 tauri-plugin-dialog = "2"
 tauri-plugin-fs = "2"
+tauri-plugin-updater = "2"
+tauri-plugin-process = "2"
+tauri-plugin-http = "2"
+tauri-plugin-shell = "2"
 serde = { version = "1", features = ["derive"] }
 serde_json = "1"
 geometry = { path = "geometry" }
diff --git a/src-tauri/capabilities/default.json b/src-tauri/capabilities/default.json
index b403288..ee359b0 100644
--- a/src-tauri/capabilities/default.json
+++ b/src-tauri/capabilities/default.json
@@ -1,7 +1,7 @@
 {
   "$schema": "../gen/schemas/desktop-schema.json",
   "identifier": "default",
-  "description": "Basis-Permissions + Fenstersteuerung fuer die randlose (decorations:false) Titelleiste: Minimieren/Maximieren/Schliessen + Ziehen der eigenen Titelleiste (data-tauri-drag-region). Menu: fuer die native macOS-Systemmenueleiste (src/native/appMenu.ts). Webview/Event: fuer die nativen Ressourcen-/Einstellungs-/Zeichnungsebenen-/Ebeneneinstellungs-Fenster + ihre Sync-Bruecken (src/native/*Window.ts) - gilt fuer alle Fensterlabels, da jedes Events senden/empfangen muss.",
+  "description": "Basis-Permissions + Fenstersteuerung fuer die randlose (decorations:false) Titelleiste: Minimieren/Maximieren/Schliessen + Ziehen der eigenen Titelleiste (data-tauri-drag-region). Menu: fuer die native macOS-Systemmenueleiste (src/native/appMenu.ts). Webview/Event: fuer die nativen Ressourcen-/Einstellungs-/Zeichnungsebenen-/Ebeneneinstellungs-Fenster + ihre Sync-Bruecken (src/native/*Window.ts) - gilt fuer alle Fensterlabels, da jedes Events senden/empfangen muss. Dialog/Fs: nativer Oeffnen- UND Speichern-Dialog fuer Projektdateien (.obp/.json) plus Lesen/Schreiben der gewaehlten Datei (io/projectFile.ts, io/saveFile.ts) - open+read fuer Projekt laden, save+write fuer Projekt/Export speichern. Updater/Process: Selbst-Update-Check beim Start (src/update/checkForUpdate.ts) + Neustart nach Installation. Http: Versionsverlauf (versions.json vom Gitea-Release) ohne Browser-CORS, Scope auf den eigenen Gitea-Host begrenzt. Shell:allow-open: oeffnet den DMG-Download einer aelteren Version im System-Browser (Rollback).",
   "windows": ["main", "resources", "settings", "drawing-levels", "layer-settings", "context-import"],
   "permissions": [
     "core:default",
@@ -16,7 +16,16 @@
     "core:webview:allow-create-webview-window",
     "core:menu:default",
     "core:event:default",
+    "dialog:allow-open",
     "dialog:allow-save",
-    "fs:allow-write-text-file"
+    "fs:allow-read-text-file",
+    "fs:allow-write-text-file",
+    "updater:default",
+    "process:allow-restart",
+    {
+      "identifier": "http:default",
+      "allow": [{ "url": "https://git.openbureau.ch/*" }]
+    },
+    "shell:allow-open"
   ]
 }
diff --git a/src-tauri/icons/128x128.png b/src-tauri/icons/128x128.png
new file mode 100644
index 0000000..460af3f
Binary files /dev/null and b/src-tauri/icons/128x128.png differ
diff --git a/src-tauri/icons/128x128@2x.png b/src-tauri/icons/128x128@2x.png
new file mode 100644
index 0000000..399326d
Binary files /dev/null and b/src-tauri/icons/128x128@2x.png differ
diff --git a/src-tauri/icons/32x32.png b/src-tauri/icons/32x32.png
new file mode 100644
index 0000000..6b6020d
Binary files /dev/null and b/src-tauri/icons/32x32.png differ
diff --git a/src-tauri/icons/64x64.png b/src-tauri/icons/64x64.png
new file mode 100644
index 0000000..0bcc96a
Binary files /dev/null and b/src-tauri/icons/64x64.png differ
diff --git a/src-tauri/icons/Square107x107Logo.png b/src-tauri/icons/Square107x107Logo.png
new file mode 100644
index 0000000..8a641dc
Binary files /dev/null and b/src-tauri/icons/Square107x107Logo.png differ
diff --git a/src-tauri/icons/Square142x142Logo.png b/src-tauri/icons/Square142x142Logo.png
new file mode 100644
index 0000000..1f4f88c
Binary files /dev/null and b/src-tauri/icons/Square142x142Logo.png differ
diff --git a/src-tauri/icons/Square150x150Logo.png b/src-tauri/icons/Square150x150Logo.png
new file mode 100644
index 0000000..ad5c701
Binary files /dev/null and b/src-tauri/icons/Square150x150Logo.png differ
diff --git a/src-tauri/icons/Square284x284Logo.png b/src-tauri/icons/Square284x284Logo.png
new file mode 100644
index 0000000..154221b
Binary files /dev/null and b/src-tauri/icons/Square284x284Logo.png differ
diff --git a/src-tauri/icons/Square30x30Logo.png b/src-tauri/icons/Square30x30Logo.png
new file mode 100644
index 0000000..fd10029
Binary files /dev/null and b/src-tauri/icons/Square30x30Logo.png differ
diff --git a/src-tauri/icons/Square310x310Logo.png b/src-tauri/icons/Square310x310Logo.png
new file mode 100644
index 0000000..7ffa8e6
Binary files /dev/null and b/src-tauri/icons/Square310x310Logo.png differ
diff --git a/src-tauri/icons/Square44x44Logo.png b/src-tauri/icons/Square44x44Logo.png
new file mode 100644
index 0000000..925bd05
Binary files /dev/null and b/src-tauri/icons/Square44x44Logo.png differ
diff --git a/src-tauri/icons/Square71x71Logo.png b/src-tauri/icons/Square71x71Logo.png
new file mode 100644
index 0000000..194ca00
Binary files /dev/null and b/src-tauri/icons/Square71x71Logo.png differ
diff --git a/src-tauri/icons/Square89x89Logo.png b/src-tauri/icons/Square89x89Logo.png
new file mode 100644
index 0000000..341696b
Binary files /dev/null and b/src-tauri/icons/Square89x89Logo.png differ
diff --git a/src-tauri/icons/StoreLogo.png b/src-tauri/icons/StoreLogo.png
new file mode 100644
index 0000000..dc12aad
Binary files /dev/null and b/src-tauri/icons/StoreLogo.png differ
diff --git a/src-tauri/icons/icon.icns b/src-tauri/icons/icon.icns
new file mode 100644
index 0000000..1acbf66
Binary files /dev/null and b/src-tauri/icons/icon.icns differ
diff --git a/src-tauri/icons/icon.ico b/src-tauri/icons/icon.ico
new file mode 100644
index 0000000..7ea8e8f
Binary files /dev/null and b/src-tauri/icons/icon.ico differ
diff --git a/src-tauri/src/lib.rs b/src-tauri/src/lib.rs
index 6599b5f..ecfe5be 100644
--- a/src-tauri/src/lib.rs
+++ b/src-tauri/src/lib.rs
@@ -72,6 +72,18 @@ pub fn run() {
         // im Tauri-Fenster einen echten Save-Dialog zeigen statt still zu laden.
         .plugin(tauri_plugin_dialog::init())
         .plugin(tauri_plugin_fs::init())
+        // Selbst-Update: prueft beim Start gegen `endpoints` aus tauri.conf.json
+        // (Gitea-Release-Asset `latest.json`), Installation via JS-Seite
+        // (@tauri-apps/plugin-updater). `tauri_plugin_process` liefert `relaunch()`
+        // fuer den Neustart nach der Installation.
+        .plugin(tauri_plugin_updater::Builder::new().build())
+        .plugin(tauri_plugin_process::init())
+        // HTTP-Requests aus der Webview (Versionsverlauf, versions.json vom
+        // selben Gitea-Release) ohne Browser-CORS-Einschraenkung; Shell: oeffnet
+        // den DMG-Download einer aelteren Version im System-Browser (Rollback,
+        // s. src/update/checkForUpdate.ts).
+        .plugin(tauri_plugin_http::init())
+        .plugin(tauri_plugin_shell::init())
         // Haelt die pro Instanz offen gelockten Projektdatei-Handles (lock.rs).
         .manage(lock::LockState::default())
         .setup(|_app| {
diff --git a/src-tauri/tauri.conf.json b/src-tauri/tauri.conf.json
index d1308db..daeed46 100644
--- a/src-tauri/tauri.conf.json
+++ b/src-tauri/tauri.conf.json
@@ -1,6 +1,6 @@
 {
   "$schema": "https://schema.tauri.app/config/2",
-  "productName": "Dossier",
+  "productName": "dossier",
   "version": "0.1.0",
   "identifier": "ch.dossier.cad",
   "build": {
@@ -11,7 +11,7 @@
     "windows": [
       {
         "label": "main",
-        "title": "Dossier",
+        "title": "dossier",
         "width": 1400,
         "height": 900,
         "dragDropEnabled": false,
@@ -27,6 +27,21 @@
   "bundle": {
     "active": true,
     "targets": "all",
-    "icon": ["icons/icon.png"]
+    "createUpdaterArtifacts": true,
+    "icon": [
+      "icons/32x32.png",
+      "icons/128x128.png",
+      "icons/128x128@2x.png",
+      "icons/icon.icns",
+      "icons/icon.ico"
+    ]
+  },
+  "plugins": {
+    "updater": {
+      "pubkey": "dW50cnVzdGVkIGNvbW1lbnQ6IG1pbmlzaWduIHB1YmxpYyBrZXk6IEYyRDk3NkZGODQwRUJBNTQKUldSVXVnNkUvM2JaOHV2QWp0L05qZnpEUmt2TkN3ZWJBeFQwb1I0cExWNEpuZWU0UjZiazdQNU0K",
+      "endpoints": [
+        "https://git.openbureau.ch/karim/DOSSIER-STANDALONE/releases/download/latest/latest.json"
+      ]
+    }
   }
 }
diff --git a/src/App.tsx b/src/App.tsx
index d343ec8..83df1f6 100644
--- a/src/App.tsx
+++ b/src/App.tsx
@@ -74,6 +74,7 @@ import {
   isTauriRuntime,
 } from "./io/projectFile";
 import type { LockInfo } from "./io/projectFile";
+import { checkForUpdate } from "./update/checkForUpdate";
 import type {
   PlanViewHandle,
   PlanSelection,
@@ -541,6 +542,13 @@ export default function App() {
     return () => setDxfImportTrigger(null);
   }, []);
 
+  // Selbst-Update: einmalig beim Start prüfen (still — meldet sich nur bei
+  // einem gefundenen Update oder einem echten Fehler, s. checkForUpdate.ts).
+  // No-op ausserhalb von Tauri (Vite-Dev-Server im Browser).
+  useEffect(() => {
+    checkForUpdate(true);
+  }, []);
+
   // Panel-Layout (Docks/Tabs/Größen) — aus dem Store-Slice (Init lädt aus
   // localStorage + reconcile). Bei jeder Änderung zurückspeichern.
   const layout = useStore((s) => s.layout);
diff --git a/src/i18n/de.ts b/src/i18n/de.ts
index aad961e..a7912bc 100644
--- a/src/i18n/de.ts
+++ b/src/i18n/de.ts
@@ -140,7 +140,7 @@ export const de = {
   "menu.native.view": "Ansicht",
   "menu.native.window": "Fenster",
   "menu.native.panels": "Panels",
-  "menu.native.about": "Über Dossier",
+  "menu.native.about": "Über dossier",
   "menu.native.quit": "Beenden",
 
   // ── Layout-Menü (Topbar) ─────────────────────────────────────────────────
@@ -1318,12 +1318,22 @@ export const de = {
   "exportSave.fmt.stl": "STL (3D-Mesh)",
   "about.title": "Über dossier",
   "about.version": "Version",
-  "about.desc": "Open-Source-CAAD (Computer Aided Architecture Design) — schöne, normgerechte Pläne aus einem semantischen Gebäudemodell. Als Desktop-App (vollständige Fassung) und im Browser zugänglich.",
+  "about.desc": "Open Source Computer Aided Architecture Design — 2D-Vektordesign sowie normgerechte Pläne aus einem semantischen Gebäudemodell.",
   "about.copyright": "© 2026 Karim Gabriele Varano",
   "about.license": "Lizenz: AGPL-3.0-or-later",
-  "about.suite": "Teil der openbureau-Suite",
+  "about.suite": "Teil von openbureau",
   "about.licenses": "Open-Source-Lizenzen (Drittkomponenten)",
   "about.close": "Schließen",
+  "about.checkUpdate": "Nach Updates suchen",
+  "about.checkingUpdate": "Suche nach Updates …",
+
+  "update.title": "Update",
+  "update.upToDate": "Du hast bereits die aktuellste Version.",
+  "update.availableBody": "Version {version} ist verfügbar. Jetzt herunterladen und installieren? Die App startet danach neu.",
+  "update.installNow": "Installieren",
+  "update.installLater": "Später",
+  "update.checkFailed": "Update-Prüfung fehlgeschlagen: {error}",
+  "update.installFailed": "Installation fehlgeschlagen: {error}",
 
   // ── Einstellungs-Fenster ──────────────────────────────────────────────────
   "topbar.settings": "Einstellungen",
@@ -1344,6 +1354,19 @@ export const de = {
   "settings.referenceElevation": "Referenzhöhe EG (m ü. M.)",
   "settings.referenceElevation.hint":
     "Nur gespeichert — wird noch nicht verwendet. Folgt für Terrain-Draping/reale Höhen relativ zum Erdgeschoss.",
+  "settings.section.update": "Update",
+  "settings.update.autoCheck": "Automatisch nach Updates suchen",
+  "settings.update.snooze.active": "Aktiv",
+  "settings.update.snooze.1day": "1 Tag pausieren",
+  "settings.update.snooze.1week": "1 Woche pausieren",
+  "settings.update.snooze.1month": "1 Monat pausieren",
+  "settings.update.snoozedUntil": "Pausiert bis {date}. Manuelles Suchen funktioniert weiterhin.",
+  "settings.update.versionHistory": "Frühere Versionen",
+  "settings.update.versionHistory.hint":
+    "Öffnet den Download im Browser — Installation bleibt manuell (ersetzt die aktuelle Version, wie beim ersten Installieren).",
+  "settings.update.loadingHistory": "Lade Versionsliste …",
+  "settings.update.noHistory": "Keine früheren Versionen verfügbar.",
+  "settings.update.download": "Herunterladen",
 
   // ── Drag & Drop (App-weiter Datei-Drop) ──────────────────────────────────
   "drop.hint": "DXF/DWG-Datei hier ablegen",
diff --git a/src/i18n/en.ts b/src/i18n/en.ts
index 98ee5eb..4c0a476 100644
--- a/src/i18n/en.ts
+++ b/src/i18n/en.ts
@@ -138,7 +138,7 @@ export const en: Record<TranslationKey, string> = {
   "menu.native.view": "View",
   "menu.native.window": "Window",
   "menu.native.panels": "Panels",
-  "menu.native.about": "About Dossier",
+  "menu.native.about": "About dossier",
   "menu.native.quit": "Quit",
 
   // Layout menu.
@@ -1305,12 +1305,22 @@ export const en: Record<TranslationKey, string> = {
   "exportSave.fmt.stl": "STL (3D mesh)",
   "about.title": "About dossier",
   "about.version": "Version",
-  "about.desc": "Open-source CAAD (Computer Aided Architecture Design) — beautiful, standard-compliant drawings from a semantic building model. Available as a desktop app (full version) and in the browser.",
+  "about.desc": "Open Source Computer Aided Architecture Design — 2D vector design plus standards-compliant drawings from a semantic building model.",
   "about.copyright": "© 2026 Karim Gabriele Varano",
   "about.license": "License: AGPL-3.0-or-later",
-  "about.suite": "Part of the openbureau suite",
+  "about.suite": "Part of openbureau",
   "about.licenses": "Open-source licenses (third-party)",
   "about.close": "Close",
+  "about.checkUpdate": "Check for updates",
+  "about.checkingUpdate": "Checking for updates …",
+
+  "update.title": "Update",
+  "update.upToDate": "You already have the latest version.",
+  "update.availableBody": "Version {version} is available. Download and install now? The app will restart afterwards.",
+  "update.installNow": "Install",
+  "update.installLater": "Later",
+  "update.checkFailed": "Update check failed: {error}",
+  "update.installFailed": "Installation failed: {error}",
 
   // Settings dialog.
   "topbar.settings": "Settings",
@@ -1331,6 +1341,19 @@ export const en: Record<TranslationKey, string> = {
   "settings.referenceElevation": "Ground floor reference elevation (m a.s.l.)",
   "settings.referenceElevation.hint":
     "Stored only — not used yet. Terrain draping / real-world elevations relative to the ground floor will follow.",
+  "settings.section.update": "Update",
+  "settings.update.autoCheck": "Check for updates automatically",
+  "settings.update.snooze.active": "Active",
+  "settings.update.snooze.1day": "Pause for 1 day",
+  "settings.update.snooze.1week": "Pause for 1 week",
+  "settings.update.snooze.1month": "Pause for 1 month",
+  "settings.update.snoozedUntil": "Paused until {date}. Manual checks still work.",
+  "settings.update.versionHistory": "Earlier versions",
+  "settings.update.versionHistory.hint":
+    "Opens the download in your browser — installation stays manual (replaces the current version, same as the first install).",
+  "settings.update.loadingHistory": "Loading version list …",
+  "settings.update.noHistory": "No earlier versions available.",
+  "settings.update.download": "Download",
 
   // Drag & drop (app-wide file drop).
   "drop.hint": "Drop a DXF/DWG file here",
diff --git a/src/native/appMenu.ts b/src/native/appMenu.ts
index ab68d0e..a0288e2 100644
--- a/src/native/appMenu.ts
+++ b/src/native/appMenu.ts
@@ -319,14 +319,27 @@ export function useNativeAppMenu(
 
       // macOS: der allererste Eintrag ist das App-Menü (Über/Beenden). Ohne ihn
       // rutscht „Datei" an die Stelle, an der macOS sonst den App-Namen zeigt.
-      // „Über Dossier" nutzt das NATIVE macOS-Info-Fenster (PredefinedMenuItem
+      // „Über dossier" nutzt das NATIVE macOS-Info-Fenster (PredefinedMenuItem
       // „About") statt des eigenen In-App-Dialogs (AboutDialog in TopBar.tsx) —
       // an dieser Stelle erwartet macOS exakt diesen Eintrag, kein Custom-Dialog.
+      // Metadaten spiegeln den In-App-Dialog: kleingeschriebener Name „dossier",
+      // Beschreibung + Lizenz/Suite als `credits` (macOS zeigt sie als Textblock
+      // unter der Version), Copyright unten. Das Icon zieht macOS aus dem Bundle
+      // (tauri.conf.json bundle.icon → icon.icns). Auf macOS NICHT unterstützt
+      // und daher weggelassen: authors/comments/license/website.
       const appMenu = await Submenu.new({
-        text: "Dossier",
+        text: "dossier",
         items: [
           await PredefinedMenuItem.new({
-            item: { About: { name: "Dossier", version: APP_VERSION } },
+            item: {
+              About: {
+                name: "dossier",
+                version: APP_VERSION,
+                shortVersion: APP_VERSION,
+                copyright: t("about.copyright"),
+                credits: `${t("about.desc")}\n\n${t("about.license")} · ${t("about.suite")}`,
+              },
+            },
             text: t("menu.native.about"),
           }),
           await PredefinedMenuItem.new({ item: "Separator" }),
diff --git a/src/native/contextImportWindow.ts b/src/native/contextImportWindow.ts
index 7b7627d..c051100 100644
--- a/src/native/contextImportWindow.ts
+++ b/src/native/contextImportWindow.ts
@@ -41,7 +41,7 @@ export async function openContextImportWindowNative(): Promise<void> {
   }
   new WebviewWindow(CONTEXT_IMPORT_WINDOW_LABEL, {
     url: "index.html?window=context-import",
-    title: "Standort importieren — Dossier",
+    title: "Standort importieren — dossier",
     width: 480,
     height: 680,
     minWidth: 400,
diff --git a/src/native/drawingLevelsWindow.ts b/src/native/drawingLevelsWindow.ts
index 770a2c8..6438a32 100644
--- a/src/native/drawingLevelsWindow.ts
+++ b/src/native/drawingLevelsWindow.ts
@@ -51,7 +51,7 @@ export async function openDrawingLevelsWindowNative(): Promise<void> {
   }
   new WebviewWindow(DRAWING_LEVELS_WINDOW_LABEL, {
     url: "index.html?window=drawing-levels",
-    title: "Zeichnungsebenen — Dossier",
+    title: "Zeichnungsebenen — dossier",
     width: 340,
     height: 560,
     minWidth: 260,
diff --git a/src/native/layerSettingsWindow.ts b/src/native/layerSettingsWindow.ts
index 5727ca2..4f3ca3b 100644
--- a/src/native/layerSettingsWindow.ts
+++ b/src/native/layerSettingsWindow.ts
@@ -54,7 +54,7 @@ export async function openLayerSettingsWindowNative(code: string): Promise<void>
   }
   new WebviewWindow(LAYER_SETTINGS_WINDOW_LABEL, {
     url: `index.html?window=layer-settings&code=${encodeURIComponent(code)}`,
-    title: "Ebeneneinstellungen — Dossier",
+    title: "Ebeneneinstellungen — dossier",
     width: 360,
     height: 420,
     minWidth: 300,
diff --git a/src/native/resourceWindow.ts b/src/native/resourceWindow.ts
index 1c79bd6..40d6c0b 100644
--- a/src/native/resourceWindow.ts
+++ b/src/native/resourceWindow.ts
@@ -47,7 +47,7 @@ export async function openResourceWindowNative(initialTab?: TabId): Promise<void
     "index.html?window=resources" + (initialTab ? `&tab=${encodeURIComponent(initialTab)}` : "");
   new WebviewWindow(RESOURCE_WINDOW_LABEL, {
     url,
-    title: "Ressourcen — Dossier",
+    title: "Ressourcen — dossier",
     width: 780,
     height: 660,
     minWidth: 480,
diff --git a/src/native/settingsWindow.ts b/src/native/settingsWindow.ts
index a7c8eb0..bb6d760 100644
--- a/src/native/settingsWindow.ts
+++ b/src/native/settingsWindow.ts
@@ -52,7 +52,7 @@ export async function openSettingsWindowNative(): Promise<void> {
   }
   new WebviewWindow(SETTINGS_WINDOW_LABEL, {
     url: "index.html?window=settings",
-    title: "Einstellungen — Dossier",
+    title: "Einstellungen — dossier",
     width: 520,
     height: 640,
     minWidth: 420,
diff --git a/src/styles.css b/src/styles.css
index 0513f4f..f370816 100644
--- a/src/styles.css
+++ b/src/styles.css
@@ -630,9 +630,9 @@ body {
   border: 1px solid var(--border, #3a3f47);
   box-shadow: 0 12px 40px rgba(0, 0, 0, 0.5);
   color: var(--ink, #e6e8ea);
-  /* Der Dialog ist ein DOM-Kind der `.topbar` (white-space: nowrap) — ohne
-     dieses Reset liefe der mehrzeilige Beschreibungstext einzeilig aus dem
-     Dialog heraus. Hier wieder normalen Zeilenumbruch erzwingen. */
+  /* Defensiv gesetzt (unabhängig davon, ob ein Vorfahre white-space: nowrap
+     setzt) — ohne dieses Reset liefe der mehrzeilige Beschreibungstext
+     einzeilig aus dem Dialog heraus. */
   white-space: normal;
 }
 .about-brand {
@@ -676,9 +676,15 @@ body {
   line-height: 1.6;
   color: var(--label, #c4c8cd);
 }
-.about-close {
-  appearance: none;
+.about-actions {
+  display: flex;
+  justify-content: flex-end;
+  gap: 8px;
   margin-top: 18px;
+}
+.about-close,
+.about-check-update {
+  appearance: none;
   padding: 6px 14px;
   border-radius: 6px;
   border: 1px solid var(--border, #3a3f47);
@@ -687,9 +693,14 @@ body {
   cursor: pointer;
   font-size: 12px;
 }
-.about-close:hover {
+.about-close:hover,
+.about-check-update:hover:not(:disabled) {
   background: var(--accent-dim, #33383f);
 }
+.about-check-update:disabled {
+  opacity: 0.6;
+  cursor: default;
+}
 
 .tag {
   font-weight: 500;
@@ -5392,6 +5403,35 @@ body {
   outline: none;
   box-shadow: 0 0 0 2px var(--accent-border);
 }
+.settings-subsection {
+  display: flex;
+  flex-direction: column;
+  gap: 6px;
+  margin-top: 14px;
+  padding-top: 12px;
+  border-top: 1px solid var(--line);
+}
+.settings-select {
+  font-family: inherit;
+  font-size: 13px;
+  padding: 6px 9px;
+  border: none;
+  border-radius: 7px;
+  background: var(--field-bg);
+  color: var(--ink);
+}
+.settings-select:focus {
+  outline: none;
+  box-shadow: 0 0 0 2px var(--accent-border);
+}
+.settings-history-row {
+  display: flex;
+  align-items: center;
+  gap: 8px;
+}
+.settings-history-row .settings-select {
+  flex: 1;
+}
 
 /* ── App-weites Drop-Feedback ──────────────────────────────────────────────
    Dezenter Rahmen + Hinweis, solange eine Datei über die App gezogen wird. */
diff --git a/src/ui/SettingsDialog.tsx b/src/ui/SettingsDialog.tsx
index 028d459..06f531a 100644
--- a/src/ui/SettingsDialog.tsx
+++ b/src/ui/SettingsDialog.tsx
@@ -14,9 +14,25 @@ import { t } from "../i18n";
 import { ACCENT_SWATCHES } from "../theme/accents";
 import { ColorHexField } from "./ColorHexField";
 import { LayoutMenu } from "./LayoutMenu";
+import { APP_VERSION } from "./TopBar";
 import type { RendererMode } from "./StatusBar";
 import type { LayoutState } from "../panels/types";
 import type { ThemeMode } from "../theme/themeMode";
+import { checkForUpdate, getUpdateSnoozeUntil, setUpdateSnooze } from "../update/checkForUpdate";
+import { getRunningVersion } from "../update/version";
+import {
+  fetchVersionHistory,
+  openVersionDownload,
+  type VersionEntry,
+} from "../update/versionHistory";
+
+/** Pausier-Optionen fuer den stillen Start-Check (s. checkForUpdate.ts). */
+const SNOOZE_OPTIONS = [
+  { id: "active", ms: null },
+  { id: "1day", ms: 24 * 60 * 60 * 1000 },
+  { id: "1week", ms: 7 * 24 * 60 * 60 * 1000 },
+  { id: "1month", ms: 30 * 24 * 60 * 60 * 1000 },
+] as const;
 
 export interface SettingsDialogProps {
   /** Hell/Dunkel — Standard ist Hell (siehe theme/themeMode.ts). */
@@ -71,6 +87,22 @@ export function SettingsDialog({
   onClose,
   windowed = false,
 }: SettingsDialogProps) {
+  const [checkingUpdate, setCheckingUpdate] = useState(false);
+  const [runningVersion, setRunningVersion] = useState<string | null>(null);
+  const [snoozeUntil, setSnoozeUntilState] = useState<number | null>(() => getUpdateSnoozeUntil());
+  const [versionHistory, setVersionHistory] = useState<VersionEntry[] | null>(null);
+  const [selectedTag, setSelectedTag] = useState<string>("");
+
+  useEffect(() => {
+    void getRunningVersion().then(setRunningVersion);
+  }, []);
+  useEffect(() => {
+    void fetchVersionHistory().then((entries) => {
+      setVersionHistory(entries);
+      if (entries.length > 0) setSelectedTag(entries[0].tag);
+    });
+  }, []);
+
   useEffect(() => {
     const onKey = (e: KeyboardEvent) => {
       if (e.key === "Escape") onClose();
@@ -208,6 +240,97 @@ export function SettingsDialog({
             />
             <div className="imp-note">{t("settings.referenceElevation.hint")}</div>
           </section>
+
+          <section className="imp-section">
+            <div className="imp-section-title">{t("settings.section.update")}</div>
+            <div className="imp-note">
+              {t("about.version")} {runningVersion ?? APP_VERSION}
+            </div>
+            <button
+              type="button"
+              className="imp-btn"
+              disabled={checkingUpdate}
+              onClick={async () => {
+                setCheckingUpdate(true);
+                try {
+                  await checkForUpdate(false);
+                } finally {
+                  setCheckingUpdate(false);
+                }
+              }}
+            >
+              {checkingUpdate ? t("about.checkingUpdate") : t("about.checkUpdate")}
+            </button>
+
+            <div className="settings-subsection">
+              <label className="settings-field-label" htmlFor="settings-update-snooze">
+                {t("settings.update.autoCheck")}
+              </label>
+              <select
+                id="settings-update-snooze"
+                className="settings-select"
+                value={snoozeUntil == null ? "active" : String(snoozeUntil)}
+                onChange={(e) => {
+                  const opt = SNOOZE_OPTIONS.find((o) => o.id === e.target.value);
+                  const until = opt?.ms == null ? null : Date.now() + opt.ms;
+                  setUpdateSnooze(until);
+                  setSnoozeUntilState(until);
+                }}
+              >
+                {SNOOZE_OPTIONS.map((o) => (
+                  <option key={o.id} value={o.id}>
+                    {t(`settings.update.snooze.${o.id}` as const)}
+                  </option>
+                ))}
+              </select>
+              {snoozeUntil != null && (
+                <div className="imp-note">
+                  {t("settings.update.snoozedUntil", {
+                    date: new Date(snoozeUntil).toLocaleDateString(),
+                  })}
+                </div>
+              )}
+            </div>
+
+            <div className="settings-subsection">
+              <label className="settings-field-label" htmlFor="settings-update-history">
+                {t("settings.update.versionHistory")}
+              </label>
+              {versionHistory == null ? (
+                <div className="imp-note">{t("settings.update.loadingHistory")}</div>
+              ) : versionHistory.length === 0 ? (
+                <div className="imp-note">{t("settings.update.noHistory")}</div>
+              ) : (
+                <>
+                  <div className="settings-history-row">
+                    <select
+                      id="settings-update-history"
+                      className="settings-select"
+                      value={selectedTag}
+                      onChange={(e) => setSelectedTag(e.target.value)}
+                    >
+                      {versionHistory.map((v) => (
+                        <option key={v.tag} value={v.tag}>
+                          {v.version} — {v.pub_date.slice(0, 10)}
+                        </option>
+                      ))}
+                    </select>
+                    <button
+                      type="button"
+                      className="imp-btn"
+                      onClick={() => {
+                        const entry = versionHistory.find((v) => v.tag === selectedTag);
+                        if (entry) void openVersionDownload(entry);
+                      }}
+                    >
+                      {t("settings.update.download")}
+                    </button>
+                  </div>
+                  <div className="imp-note">{t("settings.update.versionHistory.hint")}</div>
+                </>
+              )}
+            </div>
+          </section>
         </div>
 
         {!windowed && (
diff --git a/src/ui/TopBar.tsx b/src/ui/TopBar.tsx
index a6957af..d7afb09 100644
--- a/src/ui/TopBar.tsx
+++ b/src/ui/TopBar.tsx
@@ -10,6 +10,8 @@
 
 import type { Project } from "../model/types";
 import { t } from "../i18n";
+import { checkForUpdate } from "../update/checkForUpdate";
+import { getRunningVersion } from "../update/version";
 import { useEffect, useRef, useState } from "react";
 import { createPortal } from "react-dom";
 import { Dropdown } from "./Dropdown";
@@ -1020,6 +1022,11 @@ export const APP_VERSION = "0.1.0";
  * Wortmarke. Klick ausserhalb / Esc schliesst.
  */
 function AboutDialog({ onClose }: { onClose: () => void }) {
+  const [checkingUpdate, setCheckingUpdate] = useState(false);
+  const [runningVersion, setRunningVersion] = useState<string | null>(null);
+  useEffect(() => {
+    void getRunningVersion().then(setRunningVersion);
+  }, []);
   useEffect(() => {
     const onKey = (e: KeyboardEvent) => {
       if (e.key === "Escape") onClose();
@@ -1028,7 +1035,14 @@ function AboutDialog({ onClose }: { onClose: () => void }) {
     return () => document.removeEventListener("keydown", onKey);
   }, [onClose]);
 
-  return (
+  // Per Portal an document.body statt als DOM-Kind der .topbar rendern: die
+  // .topbar bildet (position:relative + z-index) einen eigenen Stacking-
+  // Context, der das hohe z-index:1000 von .about-overlay einsperrt — andere
+  // z-index:2-Elemente ausserhalb (z. B. das Lineal-Overlay im Grundriss)
+  // konnten dadurch trotzdem durch den abgedunkelten Hintergrund "durch-
+  // scheinen". Als Portal-Kind von body liegt der Dialog in keinem fremden
+  // Stacking-Context mehr.
+  return createPortal(
     <div className="about-overlay" onMouseDown={onClose}>
       <div
         className="about-dialog"
@@ -1041,7 +1055,7 @@ function AboutDialog({ onClose }: { onClose: () => void }) {
           dossier<span className="brand-dot">.</span>
         </div>
         <div className="about-version">
-          {t("about.version")} {APP_VERSION}
+          {t("about.version")} {runningVersion ?? APP_VERSION}
         </div>
         <p className="about-desc">{t("about.desc")}</p>
         <div className="about-meta">
@@ -1059,11 +1073,29 @@ function AboutDialog({ onClose }: { onClose: () => void }) {
           <li>LibreDWG — GPL-3.0</li>
           <li>acadrust — MPL-2.0</li>
         </ul>
-        <button type="button" className="about-close" onClick={onClose}>
-          {t("about.close")}
-        </button>
+        <div className="about-actions">
+          <button
+            type="button"
+            className="about-check-update"
+            disabled={checkingUpdate}
+            onClick={async () => {
+              setCheckingUpdate(true);
+              try {
+                await checkForUpdate(false);
+              } finally {
+                setCheckingUpdate(false);
+              }
+            }}
+          >
+            {checkingUpdate ? t("about.checkingUpdate") : t("about.checkUpdate")}
+          </button>
+          <button type="button" className="about-close" onClick={onClose}>
+            {t("about.close")}
+          </button>
+        </div>
       </div>
-    </div>
+    </div>,
+    document.body,
   );
 }
 
diff --git a/src/update/checkForUpdate.ts b/src/update/checkForUpdate.ts
new file mode 100644
index 0000000..7716054
--- /dev/null
+++ b/src/update/checkForUpdate.ts
@@ -0,0 +1,81 @@
+// Selbst-Update: fragt `endpoints` aus tauri.conf.json ab (Gitea-Release-Asset
+// `latest.json`, per `/releases/latest/download/` immer der aktuellste Release
+// dieses Repos — die URL selbst muss bei neuen Versionen nicht angepasst
+// werden). Nur unter Tauri aktiv; im reinen Browser/Vite-Dev-Server gibt es
+// weder die Plugins noch etwas zu aktualisieren.
+import { ask, message } from "@tauri-apps/plugin-dialog";
+import { t } from "../i18n";
+import { isTauriRuntime } from "../io/projectFile";
+
+/** localStorage-Key fuer die Update-Pause (s. `getUpdateSnoozeUntil`). */
+const SNOOZE_KEY = "dossier.updateSnoozeUntil";
+
+/** Ende der aktuellen Update-Pause (ms epoch), `null` wenn keine aktiv/abgelaufen. */
+export function getUpdateSnoozeUntil(): number | null {
+  const raw = localStorage.getItem(SNOOZE_KEY);
+  if (!raw) return null;
+  const n = Number(raw);
+  if (!Number.isFinite(n) || n <= Date.now()) return null;
+  return n;
+}
+
+/** Pausiert den STILLEN Start-Check bis `untilMs` (epoch); `null` hebt die Pause auf.
+ * Der manuelle Check (Button in Settings/About) ignoriert die Pause immer —
+ * das ist eine explizite Nutzeraktion. */
+export function setUpdateSnooze(untilMs: number | null): void {
+  if (untilMs == null) localStorage.removeItem(SNOOZE_KEY);
+  else localStorage.setItem(SNOOZE_KEY, String(untilMs));
+}
+
+/**
+ * Prueft auf eine neue Version. `silent=true` (Start-Check) meldet sich nur
+ * bei einem GEFUNDENEN Update oder einem echten Fehler — nicht bei „aktuell",
+ * damit der App-Start nicht bei jedem Start einen Dialog zeigt. Respektiert
+ * ausserdem eine aktive Update-Pause (s. `setUpdateSnooze`). Der manuelle
+ * Aufruf (About-/Settings-Dialog, `silent=false`) meldet in jedem Fall ein
+ * Ergebnis und ignoriert die Pause.
+ */
+export async function checkForUpdate(silent: boolean): Promise<void> {
+  if (!isTauriRuntime()) return;
+  if (silent && getUpdateSnoozeUntil() != null) return;
+  const { check } = await import("@tauri-apps/plugin-updater");
+  let update: Awaited<ReturnType<typeof check>>;
+  try {
+    update = await check();
+  } catch (err) {
+    if (!silent) {
+      await message(t("update.checkFailed", { error: String(err) }), {
+        title: t("update.title"),
+        kind: "error",
+      });
+    }
+    return;
+  }
+  if (!update) {
+    if (!silent) {
+      await message(t("update.upToDate"), {
+        title: t("update.title"),
+        kind: "info",
+      });
+    }
+    return;
+  }
+  const install = await ask(t("update.availableBody", { version: update.version }), {
+    title: t("update.title"),
+    kind: "info",
+    okLabel: t("update.installNow"),
+    cancelLabel: t("update.installLater"),
+  });
+  if (!install) return;
+  try {
+    await update.downloadAndInstall();
+  } catch (err) {
+    await message(t("update.installFailed", { error: String(err) }), {
+      title: t("update.title"),
+      kind: "error",
+    });
+    return;
+  }
+  const { relaunch } = await import("@tauri-apps/plugin-process");
+  await relaunch();
+}
diff --git a/src/update/version.ts b/src/update/version.ts
new file mode 100644
index 0000000..599d6cf
--- /dev/null
+++ b/src/update/version.ts
@@ -0,0 +1,12 @@
+// Tatsaechlich laufende App-Version (aus Tauris eigenen Metadaten, NICHT der
+// manuell gepflegte `APP_VERSION`-String in ui/TopBar.tsx) — vermeidet, dass
+// die Anzeige von der echten Installation abweicht, falls jemand beim
+// Versionsbump eine der beiden Stellen vergisst.
+import { isTauriRuntime } from "../io/projectFile";
+
+/** `null` ausserhalb von Tauri (Vite-Dev-Server im Browser, keine Installation). */
+export async function getRunningVersion(): Promise<string | null> {
+  if (!isTauriRuntime()) return null;
+  const { getVersion } = await import("@tauri-apps/api/app");
+  return getVersion();
+}
diff --git a/src/update/versionHistory.ts b/src/update/versionHistory.ts
new file mode 100644
index 0000000..f55afa4
--- /dev/null
+++ b/src/update/versionHistory.ts
@@ -0,0 +1,48 @@
+// Versionsverlauf fuer den manuellen Rollback (Settings → Update): Tauris
+// Updater-Plugin kennt nur „neuere Version installieren", kein Downgrade-
+// Manifest mit Auswahl. Statt das Plugin zu verbiegen, pflegen wir einen
+// eigenen, schlanken Index `versions.json` (liegt auf demselben Gitea-
+// Release „latest" wie `latest.json`, s. checkForUpdate.ts) und bieten pro
+// Eintrag nur den DMG-Download im System-Browser an — Installation bleibt
+// der gewohnte manuelle Schritt (DMG oeffnen, App in Applications ersetzen).
+import { isTauriRuntime } from "../io/projectFile";
+
+export interface VersionEntry {
+  version: string;
+  /** Git-Tag des Releases, z. B. "v0.1.0". */
+  tag: string;
+  /** ISO-Datum. */
+  pub_date: string;
+  notes: string;
+  /** Dateiname der DMG innerhalb dieses Release-Tags. */
+  dmg: string;
+}
+
+const VERSIONS_URL =
+  "https://git.openbureau.ch/karim/DOSSIER-STANDALONE/releases/download/latest/versions.json";
+
+/** Leeres Array ausserhalb von Tauri oder bei Netzwerk-/Parsefehlern (keine
+ * Wurf-Semantik hier — der Aufrufer zeigt einfach eine leere Liste). */
+export async function fetchVersionHistory(): Promise<VersionEntry[]> {
+  if (!isTauriRuntime()) return [];
+  try {
+    const { fetch: tauriFetch } = await import("@tauri-apps/plugin-http");
+    const res = await tauriFetch(VERSIONS_URL);
+    if (!res.ok) return [];
+    const data = (await res.json()) as VersionEntry[];
+    return Array.isArray(data) ? data : [];
+  } catch {
+    return [];
+  }
+}
+
+export function downloadUrlFor(entry: VersionEntry): string {
+  return `https://git.openbureau.ch/karim/DOSSIER-STANDALONE/releases/download/${entry.tag}/${entry.dmg}`;
+}
+
+/** Oeffnet den DMG-Download im System-Standardbrowser (kein In-App-Download —
+ * Installation bleibt manuell). */
+export async function openVersionDownload(entry: VersionEntry): Promise<void> {
+  const { open } = await import("@tauri-apps/plugin-shell");
+  await open(downloadUrlFor(entry));
+}