fix(server): turn checkpoints keep LF files when core.safecrlf is true

apps/server/src/vcs/GitVcsDriver.test.ts

@@ -323,6 +323,26 @@ it.effect("checkpoint capture still fails when a clean filter rejects a file", (
   }).pipe(Effect.scoped, Effect.provide(layerGitContract)),
 );
 
+it.effect("checkpoint capture keeps LF files that core.safecrlf would refuse to commit", () =>
+  Effect.gen(function* () {
+    const fileSystem = yield* FileSystem.FileSystem;
+    const path = yield* Path.Path;
+    const driver = yield* GitVcsDriver.makeVcsDriverShape();
+    const cwd = yield* fileSystem.makeTempDirectoryScoped({ prefix: "t3-checkpoint-safecrlf-" });
+    const { git, checkpointRef } = yield* makeCheckpointFixture(driver, cwd);
+    yield* fileSystem.writeFileString(path.join(cwd, ".gitattributes"), "*.txt text eol=crlf\n");
+    yield* git(["config", "core.safecrlf", "true"]);
+    yield* fileSystem.writeFileString(path.join(cwd, "untracked.txt"), "new\n");
+    const originalIndex = yield* fileSystem.readFile(path.join(cwd, ".git", "index"));
+
+    yield* driver.checkpoints.captureCheckpoint({ cwd, checkpointRef });
+
+    assert.strictEqual((yield* git(["show", `${checkpointRef}:file.txt`])).stdout, "unstaged\n");
+    assert.strictEqual((yield* git(["show", `${checkpointRef}:untracked.txt`])).stdout, "new\n");
+    assert.deepEqual(yield* fileSystem.readFile(path.join(cwd, ".git", "index")), originalIndex);
+  }).pipe(Effect.scoped, Effect.provide(layerGitContract)),
+);
+
 it.effect("checkpoint capture refuses a truncated nested repository listing", () =>
   Effect.gen(function* () {
     const fs = yield* FileSystem.FileSystem;

apps/server/src/vcs/GitVcsDriver.ts

@@ -1124,6 +1124,9 @@ export const makeVcsDriverShape = Effect.fn("makeGitVcsDriverShape")(function* (
               ...indexConfig,
               ...durableWrite,
               ...longPaths,
+              // safecrlf=true refuses LF files under CRLF conversion; capture them as Git's default does.
+              "-c",
+              "core.safecrlf=false",
               "add",
               ...(sparseCheckout ? ["--sparse"] : []),
               // add -A rejects ignored directories even when they contain tracked files.