feat(phase1): add image storage utilities

- Create backend/services/image_storage.py with 4 core functions:
  - sanitize_filename(): remove unsafe chars, limit to 255 chars, convert to lowercase
  - get_unique_filename(): handle collisions with UUID suffix (format: {name}_{uuid8}_{variant}.jpg)
  - ensure_image_directories(): create /images/ root and category subdirs on startup
  - save_image(): save bytes to /images/{category}/{filename}, returns relative path
- Create comprehensive test suite (22 tests) covering all functionality
- Integrate ensure_image_directories() into FastAPI startup event
- Directory structure: /images/{category}/{filename}
- Collision handling: auto-suffix with UUID if filename exists
- All tests passing, pathlib.Path for safe operations

venv/lib/python3.12/site-packages/deprecated-1.3.1.dist-info/INSTALLER

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+pip

venv/lib/python3.12/site-packages/deprecated-1.3.1.dist-info/METADATA

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+Metadata-Version: 2.4
+Name: Deprecated
+Version: 1.3.1
+Summary: Python @deprecated decorator to deprecate old python classes, functions or methods.
+Home-page: https://github.com/laurent-laporte-pro/deprecated
+Author: Laurent LAPORTE
+Author-email: laurent.laporte.pro@gmail.com
+License: MIT
+Project-URL: Documentation, https://deprecated.readthedocs.io/en/latest/
+Project-URL: Source, https://github.com/laurent-laporte-pro/deprecated
+Project-URL: Bug Tracker, https://github.com/laurent-laporte-pro/deprecated/issues
+Keywords: deprecate,deprecated,deprecation,warning,warn,decorator
+Platform: any
+Classifier: Development Status :: 5 - Production/Stable
+Classifier: Environment :: Web Environment
+Classifier: Intended Audience :: Developers
+Classifier: License :: OSI Approved :: MIT License
+Classifier: Operating System :: OS Independent
+Classifier: Programming Language :: Python
+Classifier: Programming Language :: Python :: 2
+Classifier: Programming Language :: Python :: 2.7
+Classifier: Programming Language :: Python :: 3
+Classifier: Programming Language :: Python :: 3.4
+Classifier: Programming Language :: Python :: 3.5
+Classifier: Programming Language :: Python :: 3.6
+Classifier: Programming Language :: Python :: 3.7
+Classifier: Programming Language :: Python :: 3.8
+Classifier: Programming Language :: Python :: 3.9
+Classifier: Programming Language :: Python :: 3.10
+Classifier: Programming Language :: Python :: 3.11
+Classifier: Programming Language :: Python :: 3.12
+Classifier: Programming Language :: Python :: 3.13
+Classifier: Programming Language :: Python :: 3.14
+Classifier: Topic :: Software Development :: Libraries :: Python Modules
+Requires-Python: >=2.7, !=3.0.*, !=3.1.*, !=3.2.*, !=3.3.*
+Description-Content-Type: text/x-rst
+License-File: LICENSE.rst
+Requires-Dist: wrapt<3,>=1.10
+Requires-Dist: inspect2; python_version < "3"
+Provides-Extra: dev
+Requires-Dist: tox; extra == "dev"
+Requires-Dist: PyTest; extra == "dev"
+Requires-Dist: PyTest-Cov; extra == "dev"
+Requires-Dist: bump2version<1; extra == "dev"
+Requires-Dist: setuptools; python_version >= "3.12" and extra == "dev"
+Dynamic: author
+Dynamic: author-email
+Dynamic: classifier
+Dynamic: description
+Dynamic: description-content-type
+Dynamic: home-page
+Dynamic: keywords
+Dynamic: license
+Dynamic: license-file
+Dynamic: platform
+Dynamic: project-url
+Dynamic: provides-extra
+Dynamic: requires-dist
+Dynamic: requires-python
+Dynamic: summary
+
+
+Deprecated Library
+------------------
+
+Deprecated is Easy to Use
+`````````````````````````
+
+If you need to mark a function or a method as deprecated,
+you can use the ``@deprecated`` decorator:
+
+Save in a hello.py:
+
+.. code:: python
+
+    from deprecated import deprecated
+
+
+    @deprecated(version='1.2.1', reason="You should use another function")
+    def some_old_function(x, y):
+        return x + y
+
+
+    class SomeClass(object):
+        @deprecated(version='1.3.0', reason="This method is deprecated")
+        def some_old_method(self, x, y):
+            return x + y
+
+
+    some_old_function(12, 34)
+    obj = SomeClass()
+    obj.some_old_method(5, 8)
+
+
+And Easy to Setup
+`````````````````
+
+And run it:
+
+.. code:: bash
+
+    $ pip install Deprecated
+    $ python hello.py
+    hello.py:15: DeprecationWarning: Call to deprecated function (or staticmethod) some_old_function.
+    (You should use another function) -- Deprecated since version 1.2.0.
+      some_old_function(12, 34)
+    hello.py:17: DeprecationWarning: Call to deprecated method some_old_method.
+    (This method is deprecated) -- Deprecated since version 1.3.0.
+      obj.some_old_method(5, 8)
+
+
+You can document your code
+``````````````````````````
+
+Have you ever wonder how to document that some functions, classes, methods, etc. are deprecated?
+This is now possible with the integrated Sphinx directives:
+
+For instance, in hello_sphinx.py:
+
+.. code:: python
+
+    from deprecated.sphinx import deprecated
+    from deprecated.sphinx import versionadded
+    from deprecated.sphinx import versionchanged
+
+
+    @versionadded(version='1.0', reason="This function is new")
+    def function_one():
+        '''This is the function one'''
+
+
+    @versionchanged(version='1.0', reason="This function is modified")
+    def function_two():
+        '''This is the function two'''
+
+
+    @deprecated(version='1.0', reason="This function will be removed soon")
+    def function_three():
+        '''This is the function three'''
+
+
+    function_one()
+    function_two()
+    function_three()  # warns
+
+    help(function_one)
+    help(function_two)
+    help(function_three)
+
+
+The result it immediate
+```````````````````````
+
+Run it:
+
+.. code:: bash
+
+    $ python hello_sphinx.py
+
+    hello_sphinx.py:23: DeprecationWarning: Call to deprecated function (or staticmethod) function_three.
+    (This function will be removed soon) -- Deprecated since version 1.0.
+      function_three()  # warns
+
+    Help on function function_one in module __main__:
+
+    function_one()
+        This is the function one
+
+        .. versionadded:: 1.0
+           This function is new
+
+    Help on function function_two in module __main__:
+
+    function_two()
+        This is the function two
+
+        .. versionchanged:: 1.0
+           This function is modified
+
+    Help on function function_three in module __main__:
+
+    function_three()
+        This is the function three
+
+        .. deprecated:: 1.0
+           This function will be removed soon
+
+
+Links
+`````
+
+* `Python package index (PyPi) <https://pypi.org/project/Deprecated/>`_
+* `GitHub website <https://github.com/laurent-laporte-pro/deprecated>`_
+* `Read The Docs <https://readthedocs.org/projects/deprecated>`_
+* `EBook on Lulu.com <http://www.lulu.com/commerce/index.php?fBuyContent=21305117>`_
+* `StackOverFlow Q&A <https://stackoverflow.com/a/40301488/1513933>`_
+* `Development version
+  <https://github.com/laurent-laporte-pro/deprecated/zipball/master#egg=Deprecated-dev>`_
+

venv/lib/python3.12/site-packages/deprecated-1.3.1.dist-info/RECORD

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+deprecated-1.3.1.dist-info/top_level.txt,sha256=nHbOYawKPQQE5lQl-toUB1JBRJjUyn_m_Mb8RVJ0RjA,11
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+deprecated/__pycache__/__init__.cpython-312.pyc,,
+deprecated/__pycache__/classic.cpython-312.pyc,,
+deprecated/__pycache__/params.cpython-312.pyc,,
+deprecated/__pycache__/sphinx.cpython-312.pyc,,
+deprecated/classic.py,sha256=vWW-8nVvEejx4P9sf75vleE9JWbETaha_Sa-Bf9Beyo,10649
+deprecated/params.py,sha256=_bWRXLZGi2qF-EmZfgWjGe2G15WZabhOH_9Ntvt42cc,2870
+deprecated/sphinx.py,sha256=cOKnXbDyFAwDr5O7HBEpgQrx-J-qfp57sfdK_LabDxs,11109

venv/lib/python3.12/site-packages/deprecated-1.3.1.dist-info/WHEEL

@@ -0,0 +1,6 @@
+Wheel-Version: 1.0
+Generator: setuptools (80.9.0)
+Root-Is-Purelib: true
+Tag: py2-none-any
+Tag: py3-none-any
+

venv/lib/python3.12/site-packages/deprecated-1.3.1.dist-info/licenses/LICENSE.rst

@@ -0,0 +1,21 @@
+The MIT License (MIT)
+
+Copyright (c) 2017 Laurent LAPORTE
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.

venv/lib/python3.12/site-packages/deprecated-1.3.1.dist-info/top_level.txt

@@ -0,0 +1 @@
+deprecated