diff --git a/apps/backend/internal/task/gitinit/command_descriptor.go b/apps/backend/internal/task/gitinit/command_descriptor.go
new file mode 100644
index 0000000000..75d09daf0b
--- /dev/null
+++ b/apps/backend/internal/task/gitinit/command_descriptor.go
@@ -0,0 +1,64 @@
+//go:build linux || darwin
+
+package gitinit
+
+import (
+	"context"
+	"fmt"
+	"os"
+	"os/exec"
+	"path/filepath"
+
+	"golang.org/x/sys/unix"
+)
+
+const inheritedDirectoryFD = 3
+
+// init handles the explicitly marked helper subprocess before a test binary or
+// another Kandev entry point can interpret the private helper argument.
+func init() {
+	if os.Getenv(helperEnvironmentVariable) != "1" {
+		return
+	}
+	if code, handled := runHelper(os.Args[1:]); handled {
+		os.Exit(code)
+	}
+}
+
+// CommandContext creates a Git initialization command bound to targetDirectory.
+func CommandContext(ctx context.Context, _ string, targetDirectory *os.File) (*exec.Cmd, error) {
+	gitPath, err := exec.LookPath("git")
+	if err != nil {
+		return nil, fmt.Errorf("find git: %w", err)
+	}
+	if !filepath.IsAbs(gitPath) {
+		gitPath, err = filepath.Abs(gitPath)
+		if err != nil {
+			return nil, fmt.Errorf("resolve git executable: %w", err)
+		}
+	}
+	executable, err := os.Executable()
+	if err != nil {
+		return nil, fmt.Errorf("resolve kandev executable: %w", err)
+	}
+	command := exec.CommandContext(ctx, executable, helperArgument, gitPath)
+	command.ExtraFiles = []*os.File{targetDirectory}
+	command.Env = withHelperEnvironment(os.Environ())
+	return command, nil
+}
+
+func runInheritedDirectory(gitPath string) int {
+	if err := unix.Fchdir(inheritedDirectoryFD); err != nil {
+		fmt.Fprintf(os.Stderr, "git init helper: enter inherited directory: %v\n", err)
+		return 1
+	}
+	if err := unix.Exec(
+		gitPath,
+		[]string{"git", "init", "--initial-branch=main"},
+		withoutHelperEnvironment(os.Environ()),
+	); err != nil {
+		fmt.Fprintf(os.Stderr, "git init helper: execute git: %v\n", err)
+		return 1
+	}
+	return 0
+}
diff --git a/apps/backend/internal/task/gitinit/command_descriptor_test.go b/apps/backend/internal/task/gitinit/command_descriptor_test.go
new file mode 100644
index 0000000000..672e9f955e
--- /dev/null
+++ b/apps/backend/internal/task/gitinit/command_descriptor_test.go
@@ -0,0 +1,86 @@
+//go:build linux || darwin
+
+package gitinit
+
+import (
+	"context"
+	"os"
+	"os/exec"
+	"path/filepath"
+	"strings"
+	"testing"
+)
+
+func TestCommandContextInitializesInheritedDirectory(t *testing.T) {
+	parent := t.TempDir()
+	path := filepath.Join(parent, "staging")
+	if err := os.Mkdir(path, 0o700); err != nil {
+		t.Fatalf("Mkdir staging: %v", err)
+	}
+	directory, err := os.Open(path)
+	if err != nil {
+		t.Fatalf("Open staging: %v", err)
+	}
+	t.Cleanup(func() { _ = directory.Close() })
+
+	openedPath := filepath.Join(parent, "opened")
+	if err := os.Rename(path, openedPath); err != nil {
+		t.Fatalf("Rename staging: %v", err)
+	}
+	if err := os.Mkdir(path, 0o700); err != nil {
+		t.Fatalf("Mkdir replacement: %v", err)
+	}
+
+	command, err := CommandContext(context.Background(), path, directory)
+	if err != nil {
+		t.Fatalf("CommandContext: %v", err)
+	}
+	if output, err := command.CombinedOutput(); err != nil {
+		t.Fatalf("git init: %v: %s", err, output)
+	}
+
+	if info, err := os.Stat(filepath.Join(openedPath, ".git")); err != nil || !info.IsDir() {
+		t.Fatalf("opened directory .git: info=%v error=%v", info, err)
+	}
+	entries, err := os.ReadDir(path)
+	if err != nil {
+		t.Fatalf("ReadDir replacement: %v", err)
+	}
+	if len(entries) != 0 {
+		t.Fatalf("replacement entries = %+v, want none", entries)
+	}
+}
+
+func TestCommandContextRejectsMissingGit(t *testing.T) {
+	t.Setenv("PATH", t.TempDir())
+	directory, err := os.Open(t.TempDir())
+	if err != nil {
+		t.Fatalf("Open directory: %v", err)
+	}
+	t.Cleanup(func() { _ = directory.Close() })
+
+	command, err := CommandContext(context.Background(), directory.Name(), directory)
+	if err == nil {
+		t.Fatalf("CommandContext command = %v, want missing Git error", command)
+	}
+}
+
+func TestRunHelperRejectsNonDirectoryDescriptor(t *testing.T) {
+	readPipe, writePipe, err := os.Pipe()
+	if err != nil {
+		t.Fatalf("Pipe: %v", err)
+	}
+	t.Cleanup(func() { _ = readPipe.Close() })
+	t.Cleanup(func() { _ = writePipe.Close() })
+
+	command := exec.Command(os.Args[0], helperArgument, os.Args[0])
+	command.ExtraFiles = []*os.File{readPipe}
+	command.Env = withHelperEnvironment(os.Environ())
+	output, err := command.CombinedOutput()
+	if err == nil {
+		t.Fatal("helper succeeded with a pipe as fd 3")
+	}
+	if !strings.Contains(string(output), "enter inherited directory") {
+		t.Fatalf("helper output = %q, want inherited directory error", output)
+	}
+}
diff --git a/apps/backend/internal/task/gitinit/command_path.go b/apps/backend/internal/task/gitinit/command_path.go
new file mode 100644
index 0000000000..0c5eb99289
--- /dev/null
+++ b/apps/backend/internal/task/gitinit/command_path.go
@@ -0,0 +1,22 @@
+//go:build !linux && !darwin
+
+package gitinit
+
+import (
+	"context"
+	"fmt"
+	"os"
+	"os/exec"
+)
+
+// CommandContext creates a Git initialization command for platforms without inherited fd support.
+func CommandContext(ctx context.Context, targetPath string, _ *os.File) (*exec.Cmd, error) {
+	command := exec.CommandContext(ctx, "git", "init", "--initial-branch=main")
+	command.Dir = targetPath
+	return command, nil
+}
+
+func runInheritedDirectory(string) int {
+	fmt.Fprintln(os.Stderr, "git init helper is unsupported on this platform")
+	return 2
+}
diff --git a/apps/backend/internal/task/gitinit/helper.go b/apps/backend/internal/task/gitinit/helper.go
new file mode 100644
index 0000000000..755cc3c0f5
--- /dev/null
+++ b/apps/backend/internal/task/gitinit/helper.go
@@ -0,0 +1,40 @@
+// Package gitinit runs Git initialization inside an inherited directory descriptor.
+package gitinit
+
+import (
+	"fmt"
+	"os"
+	"strings"
+)
+
+const (
+	helperArgument            = "__git-init-open-directory"
+	helperEnvironmentVariable = "KANDEV_INTERNAL_GIT_INIT_HELPER"
+)
+
+func runHelper(args []string) (int, bool) {
+	if len(args) == 0 || args[0] != helperArgument {
+		return 0, false
+	}
+	if len(args) != 2 {
+		fmt.Fprintln(os.Stderr, "git init helper requires the Git executable path")
+		return 2, true
+	}
+	return runInheritedDirectory(args[1]), true
+}
+
+func withHelperEnvironment(environment []string) []string {
+	filtered := withoutHelperEnvironment(environment)
+	return append(filtered, helperEnvironmentVariable+"=1")
+}
+
+func withoutHelperEnvironment(environment []string) []string {
+	prefix := helperEnvironmentVariable + "="
+	filtered := make([]string, 0, len(environment))
+	for _, entry := range environment {
+		if !strings.HasPrefix(entry, prefix) {
+			filtered = append(filtered, entry)
+		}
+	}
+	return filtered
+}
diff --git a/apps/backend/internal/task/gitinit/helper_test.go b/apps/backend/internal/task/gitinit/helper_test.go
new file mode 100644
index 0000000000..de06525ec5
--- /dev/null
+++ b/apps/backend/internal/task/gitinit/helper_test.go
@@ -0,0 +1,15 @@
+package gitinit
+
+import "testing"
+
+func TestRunHelperIgnoresPublicArguments(t *testing.T) {
+	if code, handled := runHelper([]string{"--help"}); handled || code != 0 {
+		t.Fatalf("runHelper = (%d, %t), want (0, false)", code, handled)
+	}
+}
+
+func TestRunHelperRejectsMissingGitPath(t *testing.T) {
+	if code, handled := runHelper([]string{helperArgument}); !handled || code != 2 {
+		t.Fatalf("runHelper = (%d, %t), want (2, true)", code, handled)
+	}
+}
diff --git a/apps/backend/internal/task/service/local_repository_initialization.go b/apps/backend/internal/task/service/local_repository_initialization.go
index 4e9112bc34..2c110af06a 100644
--- a/apps/backend/internal/task/service/local_repository_initialization.go
+++ b/apps/backend/internal/task/service/local_repository_initialization.go
@@ -9,12 +9,11 @@ import (
 	"io"
 	"io/fs"
 	"os"
-	"os/exec"
 	"path/filepath"
 	"runtime"
-	"strconv"
 	"strings"
 
+	"github.com/kandev/kandev/internal/task/gitinit"
 	"github.com/kandev/kandev/internal/task/models"
 	"go.uber.org/zap"
 )
@@ -201,14 +200,10 @@ func (s *Service) closeLocalRepositoryStaging(staging *localRepositoryStaging) {
 }
 
 func initializeGitRepository(ctx context.Context, targetPath string, targetDirectory *os.File) error {
-	gitTarget := targetPath
-	var extraFiles []*os.File
-	if inheritedPath := inheritedDirectoryPath(3); inheritedPath != "" {
-		gitTarget = inheritedPath
-		extraFiles = []*os.File{targetDirectory}
+	command, err := gitinit.CommandContext(ctx, targetPath, targetDirectory)
+	if err != nil {
+		return err
 	}
-	command := exec.CommandContext(ctx, "git", "init", "--initial-branch=main", gitTarget)
-	command.ExtraFiles = extraFiles
 	output, err := command.CombinedOutput()
 	if err != nil {
 		return fmt.Errorf("%w: %s", err, strings.TrimSpace(string(output)))
@@ -290,17 +285,6 @@ func removeLocalRepositoryRootTree(root *os.Root, name string) error {
 	return root.Remove(name)
 }
 
-func inheritedDirectoryPath(fd int) string {
-	switch runtime.GOOS {
-	case "linux":
-		return "/proc/self/fd/" + strconv.Itoa(fd)
-	case "darwin", "freebsd", "openbsd", "netbsd":
-		return "/dev/fd/" + strconv.Itoa(fd)
-	default:
-		return ""
-	}
-}
-
 func localRepositoryTargetMatches(targetPath string, createdTarget fs.FileInfo) bool {
 	currentTarget, err := lstatLocalRepositoryPath(targetPath)
 	return err == nil && currentTarget.IsDir() && os.SameFile(createdTarget, currentTarget)
diff --git a/apps/backend/internal/task/service/local_repository_initialization_descriptor_test.go b/apps/backend/internal/task/service/local_repository_initialization_descriptor_test.go
new file mode 100644
index 0000000000..f4bd96c6ad
--- /dev/null
+++ b/apps/backend/internal/task/service/local_repository_initialization_descriptor_test.go
@@ -0,0 +1,46 @@
+//go:build linux || darwin
+
+package service
+
+import (
+	"context"
+	"os"
+	"path/filepath"
+	"testing"
+)
+
+func TestInitializeGitRepositoryDoesNotFollowReplacedDirectoryPath(t *testing.T) {
+	parent := t.TempDir()
+	staging := filepath.Join(parent, "staging")
+	if err := os.Mkdir(staging, 0o700); err != nil {
+		t.Fatalf("Mkdir staging: %v", err)
+	}
+	directory, err := openLocalRepositoryDirectory(staging)
+	if err != nil {
+		t.Fatalf("openLocalRepositoryDirectory: %v", err)
+	}
+	t.Cleanup(func() { _ = directory.Close() })
+
+	openedDirectory := filepath.Join(parent, "opened-directory")
+	if err := os.Rename(staging, openedDirectory); err != nil {
+		t.Fatalf("Rename staging: %v", err)
+	}
+	if err := os.Mkdir(staging, 0o700); err != nil {
+		t.Fatalf("Mkdir replacement: %v", err)
+	}
+
+	if initErr := initializeGitRepository(context.Background(), staging, directory); initErr != nil {
+		t.Fatalf("initializeGitRepository: %v", initErr)
+	}
+
+	if info, err := os.Stat(filepath.Join(openedDirectory, ".git")); err != nil || !info.IsDir() {
+		t.Fatalf("opened directory .git: info=%v error=%v", info, err)
+	}
+	entries, err := os.ReadDir(staging)
+	if err != nil {
+		t.Fatalf("ReadDir replacement: %v", err)
+	}
+	if len(entries) != 0 {
+		t.Fatalf("replacement entries = %+v, want none", entries)
+	}
+}
diff --git a/apps/backend/internal/task/service/local_repository_initialization_test.go b/apps/backend/internal/task/service/local_repository_initialization_test.go
index bf24e0f0f8..862affed53 100644
--- a/apps/backend/internal/task/service/local_repository_initialization_test.go
+++ b/apps/backend/internal/task/service/local_repository_initialization_test.go
@@ -20,7 +20,9 @@ func TestServiceInitializeLocalRepositoryCreatesCommitlessMainRepository(t *test
 	if err := repo.CreateWorkspace(ctx, &models.Workspace{ID: "ws-1", Name: "Workspace"}); err != nil {
 		t.Fatalf("CreateWorkspace: %v", err)
 	}
-	realParent := t.TempDir()
+	// canonicalTempDir, not t.TempDir: the service stores a symlink-resolved path,
+	// and on macOS TMPDIR itself sits behind /var -> /private/var.
+	realParent := canonicalTempDir(t)
 	parentLink := filepath.Join(t.TempDir(), "projects")
 	if err := os.Symlink(realParent, parentLink); err != nil {
 		t.Fatalf("Symlink parent: %v", err)
@@ -71,7 +73,7 @@ func TestServiceInitializeLocalRepositoryCreatesMissingParentDirectories(t *test
 	if err := repo.CreateWorkspace(ctx, &models.Workspace{ID: "ws-1", Name: "Workspace"}); err != nil {
 		t.Fatalf("CreateWorkspace: %v", err)
 	}
-	parent := filepath.Join(t.TempDir(), "projects", "team")
+	parent := filepath.Join(canonicalTempDir(t), "projects", "team")
 
 	created, err := svc.InitializeLocalRepository(ctx, &InitializeLocalRepositoryRequest{
 		WorkspaceID: "ws-1",
@@ -171,6 +173,40 @@ func TestOpenLocalRepositoryDirectoryDoesNotFollowSymlink(t *testing.T) {
 	}
 }
 
+// TestInitializeGitRepositoryInitializesTheOpenDirectory pins the platform
+// contract of initializeGitRepository directly, rather than only through the
+// service happy path: whichever route it takes for this GOOS, the repository
+// must land in the directory it was handed.
+//
+// Regression test. The inherited-descriptor route used to be taken on darwin and
+// the BSDs via /dev/fd/N, where fdescfs presents a read-only synthetic entry and
+// `git init` dies with "cannot mkdir /dev/fd/3: File exists" — which made this
+// package's own happy-path tests, and "create new local repository" in the
+// product, fail on every mac.
+func TestInitializeGitRepositoryInitializesTheOpenDirectory(t *testing.T) {
+	staging := t.TempDir()
+	directory, err := openLocalRepositoryDirectory(staging)
+	if err != nil {
+		t.Fatalf("openLocalRepositoryDirectory: %v", err)
+	}
+	defer func() { _ = directory.Close() }()
+
+	if initErr := initializeGitRepository(context.Background(), staging, directory); initErr != nil {
+		t.Fatalf("initializeGitRepository: %v", initErr)
+	}
+
+	entries, err := os.ReadDir(staging)
+	if err != nil {
+		t.Fatalf("ReadDir staging: %v", err)
+	}
+	if len(entries) != 1 || entries[0].Name() != ".git" || !entries[0].IsDir() {
+		t.Fatalf("staging entries = %+v, want only a .git directory", entries)
+	}
+	if branch := runGitOutput(t, staging, "symbolic-ref", "--short", "HEAD"); branch != "main" {
+		t.Fatalf("unborn branch = %q, want main", branch)
+	}
+}
+
 func TestServiceInitializeLocalRepositoryRejectsExistingTargetWithoutMutation(t *testing.T) {
 	for _, existingContent := range []string{"", "keep me"} {
 		name := "empty"
diff --git a/docs/plans/fix-local-repository-darwin-init/plan.md b/docs/plans/fix-local-repository-darwin-init/plan.md
new file mode 100644
index 0000000000..38c8cdcf21
--- /dev/null
+++ b/docs/plans/fix-local-repository-darwin-init/plan.md
@@ -0,0 +1,80 @@
+---
+spec: docs/specs/create-local-repository/spec.md
+created: 2026-07-30
+status: completed
+---
+
+# Implementation Plan: Descriptor-Bound Local Repository Initialization
+
+## Overview
+
+`git init /dev/fd/3` cannot enter an inherited directory descriptor on macOS because fdescfs
+presents the descriptor without directory search permission. PR #2052 avoids that failure by
+setting `exec.Cmd.Dir` to the staging pathname, but doing so lets a pathname replacement redirect
+Git before the post-initialization identity check. Replace the platform-specific descriptor path
+with a small inherited-fd helper process so Linux and macOS initialize the verified directory
+identity without changing the backend process's working directory.
+
+## Backend
+
+### Inherited-descriptor Git helper
+
+- Add `apps/backend/internal/task/gitinit/` with a narrow command boundary for local repository
+  initialization.
+- On Linux and macOS, start the current executable with a private helper argument, an explicit
+  internal environment marker, and the verified directory inherited as fd 3. Package initialization
+  intercepts only that marked subprocess before any application or test entry point. The helper
+  calls `fchdir(3)` and replaces itself with `git init --initial-branch=main`, preserving context
+  cancellation because Git keeps the helper process identity.
+- Windows retains its existing pathname/current-directory behavior. Other compiled Unix targets
+  keep a compatibility fallback, but remain outside the supported product scope because they do not
+  implement the required ownership and exclusive-publication guarantees.
+- Keep the helper out of public `cmd/kandev` dispatch and CLI help.
+
+### Task service
+
+- Update `initializeGitRepository` in
+  `apps/backend/internal/task/service/local_repository_initialization.go` to request the command
+  from the helper boundary and remove the `/proc/self/fd` versus `/dev/fd` runtime path selection.
+- Preserve combined-output error reporting, unborn `main`, cancellation, post-initialization
+  identity validation, exclusive publication, and fail-closed cleanup.
+- Correct implementation comments so they describe supported Linux/macOS behavior without claiming
+  that the user-facing feature works on BSD.
+
+## Tests
+
+- **Descriptor identity after pathname replacement**
+  - **Files:** `apps/backend/internal/task/gitinit/command_descriptor_test.go`,
+    `apps/backend/internal/task/service/local_repository_initialization_descriptor_test.go`
+  - **How:** open staging directory A, rename it, install replacement B at the old pathname, invoke
+    the real helper subprocess, and assert `.git` is created only in A while B remains empty.
+- **Helper dispatch and failure propagation**
+  - **Files:** `apps/backend/internal/task/gitinit/*_test.go`,
+    `apps/backend/internal/task/handlers/repository_handlers_test.go`
+  - **How:** use a helper-process test to exercise inherited fd 3, verify hidden dispatch, and assert
+    invalid descriptors or missing Git return a non-zero result with useful stderr. Exercise the
+    HTTP handler from its own test binary to prove dispatch is not tied to a package-specific
+    `TestMain`.
+- **Existing initialization behavior**
+  - **File:** `apps/backend/internal/task/service/local_repository_initialization_test.go`
+  - **How:** retain real-Git coverage for the commitless unborn `main` repository, persistence
+    rollback, and pathname canonicalization.
+
+## Implementation Waves
+
+Wave 1:
+
+- [x] [task-01-descriptor-bound-git-init](task-01-descriptor-bound-git-init.md) - completed
+
+The repair is one sequential task because the helper command, process-init trampoline, service
+wiring, and identity regression test form one process boundary and touch shared behavior.
+
+## Risks
+
+- The helper must never change the long-running backend's process-wide working directory.
+- The helper must activate only for a subprocess carrying both the private argument and internal
+  environment marker, regardless of which application or test binary links the package.
+- `fchdir` and descriptor inheritance are supported on Linux and macOS; Windows must keep its
+  existing non-`ExtraFiles` path.
+- A replaced request-owned inode may be impossible to clean up after an attacker moves it, but the
+  replacement path must remain untouched and no repository row may be persisted.
diff --git a/docs/plans/fix-local-repository-darwin-init/task-01-descriptor-bound-git-init.md b/docs/plans/fix-local-repository-darwin-init/task-01-descriptor-bound-git-init.md
new file mode 100644
index 0000000000..a92f813efc
--- /dev/null
+++ b/docs/plans/fix-local-repository-darwin-init/task-01-descriptor-bound-git-init.md
@@ -0,0 +1,110 @@
+---
+id: "01-descriptor-bound-git-init"
+title: "Descriptor-bound Git initialization"
+status: completed
+wave: 1
+depends_on: []
+plan: "plan.md"
+spec: "../../specs/create-local-repository/spec.md"
+---
+
+# Task 01: Descriptor-Bound Git Initialization
+
+## Acceptance
+
+- Linux and macOS initialize the exact verified directory inherited as fd 3; replacing its pathname
+  cannot redirect Git into the replacement.
+- Successful initialization still creates only `.git`, uses unborn branch `main`, and preserves the
+  service's identity check, exclusive publication, rollback, and error reporting.
+- Windows retains its existing pathname-compatible behavior. Other Unix/BSD compatibility builds
+  remain outside the supported product scope until they provide the same ownership and
+  exclusive-publication guarantees.
+
+## Verification
+
+```bash
+make -C apps/backend test
+make -C apps/backend lint
+make -C apps/backend build
+
+# Direct Go commands are approved exceptions: the backend Makefile has no target
+# for package/test filters, the race detector, or CGO-free Darwin test binaries.
+cd apps/backend && go test ./internal/task/gitinit ./internal/task/service \
+  ./internal/task/handlers -run 'GitInit|InitializeLocalRepository' -count=1
+cd apps/backend && go test -race ./internal/task/gitinit ./internal/task/service \
+  -run 'GitInit|InitializeLocalRepository' -count=1
+cd apps/backend && tmpdir=$(mktemp -d) && \
+  GOOS=darwin GOARCH=arm64 CGO_ENABLED=0 go test -c \
+    -o "$tmpdir/local-repository-service.test" ./internal/task/service && \
+  GOOS=darwin GOARCH=arm64 CGO_ENABLED=0 go build \
+    -o "$tmpdir/kandev" ./cmd/kandev
+```
+
+## Files Likely Touched
+
+- `apps/backend/internal/task/gitinit/*.go`
+- `apps/backend/internal/task/gitinit/*_test.go`
+- `apps/backend/internal/task/service/local_repository_initialization.go`
+- `apps/backend/internal/task/service/local_repository_initialization_test.go`
+- `apps/backend/internal/task/handlers/repository_handlers_test.go`
+- `docs/specs/create-local-repository/spec.md`
+- `docs/plans/fix-local-repository-darwin-init/plan.md`
+- `docs/plans/fix-local-repository-darwin-init/task-01-descriptor-bound-git-init.md`
+
+## Dependencies
+
+None.
+
+## Parallelism
+
+Sequential. The helper and service changes share one subprocess contract and one regression test.
+
+## Inputs
+
+- Spec: exact-directory identity requirement, staging replacement failure mode, and regression
+  scenario.
+- Go package initialization, used only by a marked helper subprocess before application/test entry.
+- Existing `ExtraFiles` and identity checks in
+  `apps/backend/internal/task/service/local_repository_initialization.go`.
+- Explicit local repository trust boundary in
+  `docs/decisions/2026-07-20-explicit-local-repository-trust.md`.
+
+## Output Contract
+
+Report the red test evidence, helper boundary, files changed, exact command results, residual cleanup
+risk, commit and push receipt, and updated task/plan status.
+
+## Verification Results
+
+- RED: `go test ./internal/task/gitinit -run TestCommandContextRejectsMissingGit -count=1 -v`
+  failed before parent-side Git resolution because command construction incorrectly succeeded.
+- RED (CI remediation): the handler integration test timed out because the helper recursively
+  launched a test binary that had no package-specific helper dispatch; reproduced locally with a
+  15-second timeout.
+- GREEN: focused helper/service/handler/CLI coverage passed, 35 tests in 4 packages, after moving
+  the marked subprocess trampoline into the private package.
+- Race-focused helper/service/handler coverage passed, 30 tests in 3 packages.
+- The CI-shaped full race-and-coverage run completed every actual test package successfully,
+  including handlers in 12.884 seconds. Its local command exit remained non-zero only because this
+  environment's Go installation lacks `go tool covdata` for packages with no tests.
+- Darwin arm64 cross-compilation passed for service and handler test binaries and `cmd/kandev`.
+- `make -C apps/backend test` passed across the full backend.
+- `make -C apps/backend build` passed for the unified binary and bundled helper binaries.
+- `make -C apps/backend lint` passed with 0 issues after CI remediation.
+- Full affected packages passed, 776 tests in 3 packages.
+- Race-focused helper and service coverage passed, 22 tests in 2 packages.
+- Darwin arm64 cross-compilation passed for the service test binary and `cmd/kandev`.
+- `make -C apps/backend lint` passed with 0 issues.
+
+## Delivery Record
+
+- **Helper boundary:** Linux/macOS inherit the verified directory as fd 3; a subprocess carrying the
+  private argument and environment marker calls `fchdir(3)` and execs Git before normal entry.
+- **Changed files:** `internal/task/gitinit`, local-repository service/tests, handler integration
+  coverage, the feature spec, and this plan/task record.
+- **Residual cleanup risk:** if another process renames the request-owned inode, its new pathname may
+  be unknowable; Kandev still leaves the replacement untouched and persists no repository row.
+- **Initial delivery:** commit `46258170913b49ad40749ea4538134b6e4c393cf` was pushed to
+  `nova28:fix/local-repo-init-darwin` with active pre-commit and commit-message hooks and no bypass.
+- **Status:** task and plan completed; CI follow-up replaces package-specific dispatch after the
+  handler integration test exposed recursive test-binary startup.
diff --git a/docs/specs/create-local-repository/spec.md b/docs/specs/create-local-repository/spec.md
index 2b41bbf67d..3078c666ee 100644
--- a/docs/specs/create-local-repository/spec.md
+++ b/docs/specs/create-local-repository/spec.md
@@ -26,6 +26,9 @@ repository on the machine running Kandev, select it, and continue composing the
   the user create and enter one new child folder in the currently displayed directory.
 - Confirmation creates `<parent>/<name>` only when that target does not already exist, initializes a
   local Git repository with unborn default branch `main`, and does not create files or commits.
+- Git initialization remains bound to the exact request-owned directory identity that the backend
+  opened and verified. Replacing its pathname before or during initialization must not cause Git to
+  modify the replacement path.
 - A successfully initialized repository is persisted as a local repository in the active workspace,
   added to the in-memory workspace repository list, selected in the originating row, and displays
   `main` as that row's branch. Other task fields and repository rows are unchanged.
@@ -121,6 +124,7 @@ to the created canonical target path and the active workspace.
 | Name is empty, `.`/`..`, or contains a host path separator | Confirmation is disabled client-side and the backend rejects a forged request. |
 | The nearest existing parent ancestor cannot be trusted, read, or written | The form stays open, shows an error, and no repository is selected or persisted. |
 | Target already exists, including an empty directory | The request returns conflict and does not modify the target. |
+| The request-owned staging pathname is replaced during Git initialization | The operation fails without modifying the replacement path. Cleanup remains limited to a request-owned directory whose identity can still be verified. |
 | `git` is unavailable or initialization fails | The request fails, no repository row is persisted, and Kandev removes only the target directory created by this request when cleanup is safe. A cleanup failure is logged and the error remains visible. |
 | Repository persistence fails after Git initialization | The request fails and performs the same best-effort cleanup of the request-owned target; no repository row is returned. |
 | Frontend state refresh fails after a successful response | The returned repository is still selected directly and merged into the active workspace cache without waiting for a second list request. |
@@ -168,6 +172,10 @@ deleting the task does not delete the repository or its workspace registration.
 - **GIVEN** `/work/projects/alpha` already exists, **WHEN** the user tries to create `alpha` under
   `/work/projects`, **THEN** the UI reports the conflict and Kandev does not modify or register the
   existing path.
+- **GIVEN** the backend has opened its request-owned staging directory, **WHEN** that directory is
+  renamed and another directory is installed at the staging pathname before Git starts, **THEN**
+  Git operates only on the originally opened directory, the replacement remains unchanged, and the
+  request fails because the original identity is no longer publishable at that pathname.
 - **GIVEN** `/work` exists but `/work/team/projects` does not, **WHEN** the user enters
   `/work/team/projects` as the parent and creates `alpha`, **THEN** Kandev creates both missing
   parent directories and initializes `/work/team/projects/alpha`.
@@ -198,7 +206,12 @@ deleting the task does not delete the repository or its workspace registration.
   tools in this iteration.
 - Automatically deleting a successfully created repository when its originating task is canceled or
   deleted.
+- Adding local-repository initialization support to BSD platforms that do not currently implement
+  trusted directory ownership checks and exclusive publication.
 
 ## Implementation Plan
 
 See [Create Local Repository plan](../../plans/create-local-repository/plan.md).
+
+The descriptor-bound macOS repair is tracked in the
+[local repository descriptor initialization plan](../../plans/fix-local-repository-darwin-init/plan.md).