diff --git a/scripts/coil/desktop-bundle-size.test.ts b/scripts/coil/desktop-bundle-size.test.ts
index f5671914dfa..a55c73ce940 100644
--- a/scripts/coil/desktop-bundle-size.test.ts
+++ b/scripts/coil/desktop-bundle-size.test.ts
@@ -635,6 +635,20 @@ describe("verifyPackagedApp over a real asar", () => {
     });
   });
 
+  // The Bun-runtime variants are imported behind runtime detection the shipped app (always Node,
+  // via ELECTRON_RUN_AS_NODE) can never satisfy, and upstream's Windows sidecar deliberately omits
+  // them — their absence is not a break. Release run 31839839479 failed on exactly this.
+  it("does not require Bun-runtime-only packages the shipped app cannot load", () => {
+    withTempDir((dir) => {
+      const asarPath = writeAsar(dir, {
+        "apps/server/dist/bin.mjs":
+          'import("@effect/platform-bun/BunHttpServer");import("@effect/sql-sqlite-bun/SqliteClient");',
+        "apps/desktop/dist-electron/main.cjs": "const x = 1;",
+      });
+      assert.ok(verifyPackagedApp(asarPath).ok, "unreachable Bun-runtime imports are not breaks");
+    });
+  });
+
   // A packaging-topology change that hides a whole bundle directory must be an error, not an empty
   // green result — the pre-#102 gate verified only the Electron bundle on Windows and passed.
   it("fails when a first-party bundle directory is invisible to the checker", () => {
diff --git a/scripts/coil/verify-desktop-bundle.mjs b/scripts/coil/verify-desktop-bundle.mjs
index ee5bbfafa23..eec6298000a 100644
--- a/scripts/coil/verify-desktop-bundle.mjs
+++ b/scripts/coil/verify-desktop-bundle.mjs
@@ -72,6 +72,22 @@ export const FIRST_PARTY_BUNDLE_DIRS = ["apps/desktop/dist-electron", "apps/serv
 const RUNTIME_PROVIDED = new Set(["electron"]);
 const BUNDLED_WORKSPACE_PREFIXES = ["@t3tools/"];
 
+/*
+ * Imports the shipped app can never reach, so their absence is not a break.
+ *
+ * The server bundle imports these behind Bun-runtime detection (`typeof Bun !== "undefined"` in
+ * server.ts's HttpServerLive, `process.versions.bun !== undefined` in persistence/Layers/Sqlite.ts),
+ * and the shipped desktop app always runs the server under Node via ELECTRON_RUN_AS_NODE — the Bun
+ * branch cannot execute. Upstream agrees by construction: its Windows server.asar sidecar stages
+ * only the CLI's runtime external dependencies, which exclude both (that omission is what surfaced
+ * this list — release run 31839839479). The macOS artifact carries them incidentally, because its
+ * staging installs the full production dependency set.
+ *
+ * If the shipped server ever runs under Bun, this list is wrong and the failure is a MODULE_NOT_FOUND
+ * at startup on the Bun path — re-check both guard sites before growing or trusting it.
+ */
+const UNREACHABLE_IN_SHIPPED_RUNTIME = new Set(["@effect/platform-bun", "@effect/sql-sqlite-bun"]);
+
 /**
  * @typedef {object} PackagedFile
  * @property {number} size
@@ -219,6 +235,7 @@ export function isPackagedSpecifier(specifier) {
   const name = packageNameFromSpecifier(specifier);
   if (name === undefined) return false;
   if (RUNTIME_PROVIDED.has(name)) return false;
+  if (UNREACHABLE_IN_SHIPPED_RUNTIME.has(name)) return false;
   return !BUNDLED_WORKSPACE_PREFIXES.some((prefix) => name.startsWith(prefix));
 }