diff --git a/SPEC.txt b/SPEC.txt
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+PROJECT: mini-todo
+AUTHOR: Rashid Buzurtanov 92414781214
+VERSION: v1
+DATE: 2026-05-22
+
+=== 1. Overview ===
+This is a command-line interface (CLI) task management application (mini-todo). 
+In version V1, the focus is to transition all user-facing outputs and error messages into Turkish, and enforce strict argument checks.
+
+=== 2. Commands and Behavior ===
+
+The application is executed via: `python solution_v1.py <command> [arguments]`
+
+* init
+  - Description: Initializes the storage directory.
+  - Behavior: Creates a hidden directory named `.minitodo` and an empty `tasks.dat` file inside it.
+  - Output (Success): "Bos minitodo sistemi '.minitodo/' altinda basariyla olusturuldu."
+  - Output (Error): If `.minitodo` already exists, prints:
+    "Hata: Sistem zaten baslatilmis!"
+
+* add <description>
+  - Description: Adds a new task to the system.
+  - Behavior: Appends the task with an auto-incremented ID, status (PENDING), and date to `tasks.dat`.
+  - Output (Success): "Gorev #<ID> eklendi: <description>"
+  - Output (Error - Missing Argument): If no description is provided, prints:
+    "Kullanim Hasi: Lutfen gorev aciklamasi yazin. Ornek: add 'Sut al'"
+
+* list / done / delete
+  - Description: These commands are placeholders for V1 and are not fully implemented yet.
+  - Output: "Komut '<command_name>' gelecek haftalarda yuklenecektir."
+
+=== 3. Global Error Handling ===
+
+* System Not Initialized:
+  - If any command (except init) is run before initialization, prints:
+    "Hata: Sistem henuz baslatilmamis. Once 'init' calistirin."
+
+* Unknown Command:
+  - If an invalid command is entered, prints:
+    "Hata: Bilinmeyen komut -> <command_name>"
+
+=== 4. V1 Constraints ===
+- No loops (`for` or `while`) are allowed in the source code.
+- No lists (`[]`) or dynamic structures can be used; arguments must be accessed via direct indices of `sys.argv`.
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diff --git a/solution_v1.py b/solution_v1.py
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+import sys
+import os
+
+# ==============================================================================
+# V1 GÖREV LİSTESİ (V1 TASK LIST)
+# 1. Hata mesajlarının tamamı kullanıcı dostu ve Türkçe hale getirilecek.
+# 2. 'add' komutunda argüman eksikliği kontrolü sıkılaştırılacak ve Türkçe kılavuz basılacak.
+# 3. 'init' komutunda halihazırda dizin varsa dönen hata mesajı netleştirilecek.
+# ==============================================================================
+
+def initialize():
+    if os.path.exists(".minitodo"):
+        return "Hata: Sistem zaten baslatilmis!"
+    
+    os.mkdir(".minitodo")
+    f = open(".minitodo/tasks.dat", "w")
+    f.close()
+    return "Bos minitodo sistemi '.minitodo/' altinda basariyla olusturuldu."
+
+def add_task(description):
+    if not os.path.exists(".minitodo"):
+        return "Hata: Sistem henuz baslatilmamis. Once 'init' calistirin."
+    
+    f = open(".minitodo/tasks.dat", "r")
+    content = f.read()
+    f.close()
+    
+    task_id = content.count("\n") + 1
+    
+    f = open(".minitodo/tasks.dat", "a")
+    f.write(str(task_id) + "|" + description + "|PENDING|2026-05-22\n")
+    f.close()
+    
+    return "Gorev #" + str(task_id) + " eklendi: " + description
+
+def show_not_implemented(command_name):
+    return "Komut '" + command_name + "' gelecek haftalarda yuklenecektir."
+
+# --- Ana Program ---
+if len(sys.argv) < 2:
+    print("Kullanim: python solution_v1.py <komut> [argumanlar]")
+else:
+    command = sys.argv[1]
+
+    if command == "init":
+        print(initialize())
+        
+    elif command == "add":
+        if len(sys.argv) < 3:
+            print("Kullanim Hasi: Lutfen gorev aciklamasi yazin. Ornek: add 'Sut al'")
+        else:
+            print(add_task(sys.argv[2]))
+            
+    elif command == "list" or command == "done" or command == "delete":
+        print(show_not_implemented(command))
+        
+    else:
+        print("Hata: Bilinmeyen komut -> " + command)
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diff --git a/test_spec.py b/test_spec.py
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+++ b/test_spec.py
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+import subprocess
+import os
+import shutil
+
+# --- Yardimci Fonksiyon ---
+def run_cmd(args):
+    result = subprocess.run(
+        ["python", "solution_v1.py"] + args,
+        capture_output=True,
+        text=True
+    )
+    return result.stdout.strip()
+
+# --- Setup ve Temizlik ---
+def setup_function():
+    if os.path.exists(".minitodo"):
+        shutil.rmtree(".minitodo")
+
+# --- V1 Testleri ---
+
+# 1. 'init' komutunun dizin olusturma testi
+def test_init_creates_directory():
+    output = run_cmd(["init"])
+    assert os.path.exists(".minitodo")
+    assert "basariyla olusturuldu" in output
+
+# 2. 'init' komutunun tekrar calistirilma hata testi
+def test_init_already_exists():
+    run_cmd(["init"])
+    output = run_cmd(["init"])
+    assert "Sistem zaten baslatilmis" in output
+
+# 3. 'add' komutu ile tek bir gorev ekleme testi
+def test_add_single_task():
+    run_cmd(["init"])
+    output = run_cmd(["add", "Sut al"])
+    assert "Gorev #1 eklendi" in output
+
+# 4. 'add' komutunda eksik arguman hata testi
+def test_missing_arguments_add():
+    run_cmd(["init"])
+    output = run_cmd(["add"])
+    assert "Kullanim Hasi" in output
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