From aee131dfe69fccb4149d1249638df17db5784477 Mon Sep 17 00:00:00 2001
From: imabdulazeez <abdulazeez44@gmail.com>
Date: Fri, 1 May 2026 16:55:57 +0530
Subject: [PATCH 1/3] fix(server): walk parent dirs in isGitRepository so
 subdirectories of a git repo are detected

Previously isGitRepository only checked cwd/.git, so opening t3code at a
sub-package of a monorepo (e.g. apps/server) was treated as non-git,
silently disabling checkpoints and the diff panel. Walk up to the
filesystem root to match git's own behavior.

Fixes #2441
---
 apps/server/src/git/Utils.ts | 18 ++++++++++++++++--
 1 file changed, 16 insertions(+), 2 deletions(-)

diff --git a/apps/server/src/git/Utils.ts b/apps/server/src/git/Utils.ts
index 15015e8cda..4b428851fb 100644
--- a/apps/server/src/git/Utils.ts
+++ b/apps/server/src/git/Utils.ts
@@ -8,10 +8,24 @@ import { Schema } from "effect";
 import { TextGenerationError } from "@t3tools/contracts";
 
 import { existsSync } from "node:fs";
-import { join } from "node:path";
+import { dirname, join, parse } from "node:path";
 
 export function isGitRepository(cwd: string): boolean {
-  return existsSync(join(cwd, ".git"));
+  const root = parse(cwd).root;
+  let current = cwd;
+  while (true) {
+    if (existsSync(join(current, ".git"))) {
+      return true;
+    }
+    if (current === root) {
+      return false;
+    }
+    const parent = dirname(current);
+    if (parent === current) {
+      return false;
+    }
+    current = parent;
+  }
 }
 
 /** Convert an Effect Schema to a flat JSON Schema object, inlining `$defs` when present. */

From 352a5043c135948449180c350877d7e76c2715d0 Mon Sep 17 00:00:00 2001
From: imabdulazeez <abdulazeez44@gmail.com>
Date: Fri, 1 May 2026 17:53:19 +0530
Subject: [PATCH 2/3] refactor(server): simplify isGitRepository per review

Apply review suggestion: collapse the parent-walk into a single while
loop using the dirname-equals-self termination check, and drop the
redundant parse(cwd).root guard. Behavior is unchanged for every cwd the
codebase actually passes in (always a sub-path of the repo).
---
 apps/server/src/git/Utils.ts | 23 ++++++-----------------
 1 file changed, 6 insertions(+), 17 deletions(-)

diff --git a/apps/server/src/git/Utils.ts b/apps/server/src/git/Utils.ts
index 4b428851fb..012ab0d266 100644
--- a/apps/server/src/git/Utils.ts
+++ b/apps/server/src/git/Utils.ts
@@ -8,24 +8,13 @@ import { Schema } from "effect";
 import { TextGenerationError } from "@t3tools/contracts";
 
 import { existsSync } from "node:fs";
-import { dirname, join, parse } from "node:path";
-
-export function isGitRepository(cwd: string): boolean {
-  const root = parse(cwd).root;
-  let current = cwd;
-  while (true) {
-    if (existsSync(join(current, ".git"))) {
-      return true;
-    }
-    if (current === root) {
-      return false;
-    }
-    const parent = dirname(current);
-    if (parent === current) {
-      return false;
-    }
-    current = parent;
+import { dirname, join } from "node:path";
+
+export function isGitRepository(current: string): boolean {
+  while (current !== (current = dirname(current))) {
+    if (existsSync(join(current, ".git"))) return true;
   }
+  return false;
 }
 
 /** Convert an Effect Schema to a flat JSON Schema object, inlining `$defs` when present. */

From 594fc8dd4cdbf177a07c6e91730eeae3b959497c Mon Sep 17 00:00:00 2001
From: imabdulazeez <abdulazeez44@gmail.com>
Date: Fri, 1 May 2026 17:57:50 +0530
Subject: [PATCH 3/3] fix(server): check input dir in isGitRepository before
 walking parents

The previous while-loop form advanced current to its parent in the loop
condition before the existsSync check ran, so the input directory was
never tested. Calling isGitRepository on a path that itself contains
.git returned false. Switch to do...while so the check runs before the
advance, without duplicating the existsSync call.
---
 apps/server/src/git/Utils.ts | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/apps/server/src/git/Utils.ts b/apps/server/src/git/Utils.ts
index 012ab0d266..139229a48e 100644
--- a/apps/server/src/git/Utils.ts
+++ b/apps/server/src/git/Utils.ts
@@ -11,9 +11,9 @@ import { existsSync } from "node:fs";
 import { dirname, join } from "node:path";
 
 export function isGitRepository(current: string): boolean {
-  while (current !== (current = dirname(current))) {
+  do {
     if (existsSync(join(current, ".git"))) return true;
-  }
+  } while (current !== (current = dirname(current)));
   return false;
 }