From ae64a684600f83f24eaa98e94c302063db7a7fd1 Mon Sep 17 00:00:00 2001
From: Guillermo Casanova <guillermo.casanova.b@gmail.com>
Date: Thu, 1 Oct 2026 09:35:52 -0300
Subject: [PATCH] fix(ssh): record the archive lock owner's real PID

String.replaceAll treats $$ in a string replacement as an escaped $, so the runner embedded in the SSH launch script wrote a literal $ as the archive lock owner. A replacer function keeps the value literal.
---
 packages/ssh/src/tunnel.test.ts | 6 ++++++
 packages/ssh/src/tunnel.ts      | 3 ++-
 2 files changed, 8 insertions(+), 1 deletion(-)

diff --git a/packages/ssh/src/tunnel.test.ts b/packages/ssh/src/tunnel.test.ts
index a3c049323bce..99be6ea80c2b 100644
--- a/packages/ssh/src/tunnel.test.ts
+++ b/packages/ssh/src/tunnel.test.ts
@@ -242,6 +242,12 @@ describe("ssh tunnel scripts", () => {
     assert.notInclude(script, "npx");
   });
 
+  it("embeds the runner in the launch script byte for byte", () => {
+    const runner = buildRemoteT3RunnerScript(ARCHIVE);
+    assert.include(runner, 'printf \'%s\\n\' "$$" > "$T3_LOCK/pid.tmp"');
+    assert.include(buildRemoteLaunchScript(ARCHIVE), runner);
+  });
+
   it("uses the remote t3 runner for launch and pairing scripts", () => {
     const target = {
       alias: "devbox",
diff --git a/packages/ssh/src/tunnel.ts b/packages/ssh/src/tunnel.ts
index 0473ffeceae2..b055df438d33 100644
--- a/packages/ssh/src/tunnel.ts
+++ b/packages/ssh/src/tunnel.ts
@@ -243,7 +243,8 @@ function applyScriptPlaceholders(
 ): string {
   let result = template;
   for (const [token, value] of Object.entries(replacements)) {
-    result = result.replaceAll(`@@${token}@@`, value);
+    // A replacer function keeps `$$` and other `$` patterns in the value literal.
+    result = result.replaceAll(`@@${token}@@`, () => value);
   }
   return result;
 }