diff --git a/nsis/installer.nsh b/nsis/installer.nsh
new file mode 100644
index 0000000..36f5e68
--- /dev/null
+++ b/nsis/installer.nsh
@@ -0,0 +1,60 @@
+; Theseus Navigator NSIS include — bundles Ariadne's Thread as an opt-out.
+;
+; During install (Theseus 0.1.0+): if Ariadne's Thread is NOT already installed,
+; prompt with a Yes/No (default Yes) offering to also install the system-wide
+; resolver. On Yes, chain-invoke the bundled AriadneResolver-Setup silently
+; (its own UAC prompt fires because Inno Setup declares PrivilegesRequired=admin).
+;
+; During uninstall: if Ariadne's Thread IS installed, prompt with a Yes/No
+; (default Yes) offering to also uninstall it. On Yes, run its uninstaller
+; silently via the UninstallString we read from its Inno registry entry.
+;
+; Registry lookup: Inno Setup 6 registers per-machine 64-bit installs (which
+; Ariadne is — ArchitecturesInstallIn64BitMode=x64compatible) under the
+; 64-bit view of HKLM\Software\Microsoft\Windows\CurrentVersion\Uninstall\
+; with the AppId + "_is1" suffix. Ariadne's AppId is fixed at
+; {7E7A5F1C-3B4E-4C8A-9E1D-ARIADNERSLVR}.
+;
+; Silent flags used on the Ariadne installer:
+;   /VERYSILENT           no wizard UI (progress bar only via ExecWait blocking)
+;   /SUPPRESSMSGBOXES     suppresses all message boxes the Inno script might raise
+;   /NORESTART            never auto-reboot
+;
+; If the user cancels the Ariadne UAC prompt, ExecWait still returns cleanly
+; and Theseus install continues — Ariadne install is best-effort. The user
+; can always install it later from silentmode.st/tools.
+
+!define ARIADNE_INSTALLER "AriadneResolver-Setup-0.1.0.exe"
+!define ARIADNE_UNINST_KEY "Software\Microsoft\Windows\CurrentVersion\Uninstall\{7E7A5F1C-3B4E-4C8A-9E1D-ARIADNERSLVR}_is1"
+
+!macro customInstall
+  ; Skip the prompt if Ariadne is already installed — no point asking on upgrades.
+  SetRegView 64
+  ReadRegStr $R0 HKLM "${ARIADNE_UNINST_KEY}" "UninstallString"
+  SetRegView lastused
+  StrCmp $R0 "" ariadne_ask ariadne_skip_install
+
+  ariadne_ask:
+  MessageBox MB_YESNO|MB_ICONQUESTION|MB_DEFBUTTON1 \
+    "Install Ariadne's Thread now?$\r$\n$\r$\nAriadne's Thread is a small system-wide resolver that lets Bitcoin Cash names (.bch, .x, ...) work in Chrome, Edge, Firefox, and every other browser on this machine.$\r$\n$\r$\nRecommended. It runs a UAC prompt of its own." \
+    IDNO ariadne_skip_install
+  ; extraResources are unpacked under $INSTDIR/resources.
+  ExecWait '"$INSTDIR\resources\${ARIADNE_INSTALLER}" /VERYSILENT /SUPPRESSMSGBOXES /NORESTART'
+
+  ariadne_skip_install:
+!macroend
+
+!macro customUnInstall
+  ; Only offer to remove Ariadne if it's actually installed.
+  SetRegView 64
+  ReadRegStr $R0 HKLM "${ARIADNE_UNINST_KEY}" "UninstallString"
+  SetRegView lastused
+  StrCmp $R0 "" ariadne_skip_uninstall
+
+  MessageBox MB_YESNO|MB_ICONQUESTION|MB_DEFBUTTON1 \
+    "Also uninstall Ariadne's Thread?$\r$\n$\r$\nRemoving it makes Bitcoin Cash names stop resolving in Chrome, Edge, Firefox, and every other browser on this machine. (Theseus's own uninstall does not depend on this — say No to keep the system-wide resolver.)" \
+    IDNO ariadne_skip_uninstall
+  ExecWait '$R0 /VERYSILENT /SUPPRESSMSGBOXES /NORESTART'
+
+  ariadne_skip_uninstall:
+!macroend
diff --git a/package.json b/package.json
index e5048f3..515884a 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "theseus-navigator",
-  "version": "0.0.9",
+  "version": "0.1.0",
   "description": "Theseus Navigator — a browser that follows the thread. By Silent Mode, a Deviant project.",
   "author": "Silent Mode",
   "main": "main.js",
@@ -85,6 +85,10 @@
       {
         "from": "snapshots/bns-name-snapshot.json",
         "to": "bns-name-snapshot.json"
+      },
+      {
+        "from": "build/AriadneResolver-Setup-0.1.0.exe",
+        "to": "AriadneResolver-Setup-0.1.0.exe"
       }
     ],
     "win": {
@@ -97,7 +101,8 @@
       "oneClick": false,
       "perMachine": false,
       "allowToChangeInstallationDirectory": true,
-      "artifactName": "TheseusNavigator-Setup-${version}.${ext}"
+      "artifactName": "TheseusNavigator-Setup-${version}.${ext}",
+      "include": "nsis/installer.nsh"
     },
     "portable": {
       "artifactName": "TheseusNavigator-${version}-portable.${ext}"