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/jiter-0.14.0.dist-info/INSTALLER

@@ -0,0 +1 @@
+pip

venv/lib/python3.12/site-packages/jiter-0.14.0.dist-info/METADATA

@@ -0,0 +1,148 @@
+Metadata-Version: 2.4
+Name: jiter
+Version: 0.14.0
+Classifier: Development Status :: 4 - Beta
+Classifier: Programming Language :: Python
+Classifier: Programming Language :: Python :: 3
+Classifier: Programming Language :: Python :: 3 :: Only
+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: Programming Language :: Python :: Implementation :: CPython
+Classifier: Programming Language :: Python :: Implementation :: GraalPy
+Classifier: Intended Audience :: Developers
+Classifier: Intended Audience :: Information Technology
+Classifier: Intended Audience :: System Administrators
+Classifier: Operating System :: Unix
+Classifier: Operating System :: POSIX :: Linux
+Classifier: Environment :: Console
+Classifier: Environment :: MacOS X
+Classifier: Topic :: File Formats :: JSON
+Classifier: Framework :: Pydantic :: 2
+License-File: LICENSE
+Summary: Fast iterable JSON parser.
+Home-Page: https://github.com/pydantic/jiter/
+Author-email: Samuel Colvin <s@muelcolvin.com>
+License-Expression: MIT
+Requires-Python: >=3.9
+Description-Content-Type: text/markdown; charset=UTF-8; variant=GFM
+
+# jiter
+
+[![CI](https://github.com/pydantic/jiter/workflows/CI/badge.svg?event=push)](https://github.com/pydantic/jiter/actions?query=event%3Apush+branch%3Amain+workflow%3ACI)
+[![pypi](https://img.shields.io/pypi/v/jiter.svg)](https://pypi.python.org/pypi/jiter)
+[![versions](https://img.shields.io/pypi/pyversions/jiter.svg)](https://github.com/pydantic/jiter)
+[![license](https://img.shields.io/github/license/pydantic/jiter.svg)](https://github.com/pydantic/jiter/blob/main/LICENSE)
+
+This is a standalone version of the JSON parser used in `pydantic-core`. The recommendation is to only use this package directly if you do not use `pydantic`.
+
+The API is extremely minimal:
+
+```python
+def from_json(
+    json_data: bytes,
+    /,
+    *,
+    allow_inf_nan: bool = True,
+    cache_mode: Literal[True, False, 'all', 'keys', 'none'] = 'all',
+    partial_mode: Literal[True, False, 'off', 'on', 'trailing-strings'] = False,
+    catch_duplicate_keys: bool = False,
+    float_mode: Literal['float', 'decimal', 'lossless-float'] = 'float',
+) -> Any:
+    """
+    Parse input bytes into a JSON object.
+
+    Arguments:
+        json_data: The JSON data to parse
+        allow_inf_nan: Whether to allow infinity (`Infinity` an `-Infinity`) and `NaN` values to float fields.
+            Defaults to True.
+        cache_mode: cache Python strings to improve performance at the cost of some memory usage
+            - True / 'all' - cache all strings
+            - 'keys' - cache only object keys
+            - False / 'none' - cache nothing
+        partial_mode: How to handle incomplete strings:
+            - False / 'off' - raise an exception if the input is incomplete
+            - True / 'on' - allow incomplete JSON but discard the last string if it is incomplete
+            - 'trailing-strings' - allow incomplete JSON, and include the last incomplete string in the output
+        catch_duplicate_keys: if True, raise an exception if objects contain the same key multiple times
+        float_mode: How to return floats: as a `float`, `Decimal` or `LosslessFloat`
+
+    Returns:
+        Python object built from the JSON input.
+    """
+
+
+def cache_clear() -> None:
+    """
+    Reset the string cache.
+    """
+
+
+def cache_usage() -> int:
+    """
+    get the size of the string cache.
+
+    Returns:
+        Size of the string cache in bytes.
+    """
+
+```
+## Examples
+
+The main function provided by Jiter is `from_json()`, which accepts a bytes object containing JSON and returns a Python dictionary, list or other value.
+
+```python
+import jiter
+
+json_data = b'{"name": "John", "age": 30}'
+parsed_data = jiter.from_json(json_data)
+print(parsed_data)  # Output: {'name': 'John', 'age': 30}
+```
+
+### Handling Partial JSON
+
+Incomplete JSON objects can be parsed using the `partial_mode=` parameter.
+
+```python
+import jiter
+
+partial_json = b'{"name": "John", "age": 30, "city": "New Yor'
+
+# Raise error on incomplete JSON
+try:
+    jiter.from_json(partial_json, partial_mode=False)
+except ValueError as e:
+    print(f'Error: {e}')
+
+# Parse incomplete JSON, discarding incomplete last field
+result = jiter.from_json(partial_json, partial_mode=True)
+print(result)  # Output: {'name': 'John', 'age': 30}
+
+# Parse incomplete JSON, including incomplete last field
+result = jiter.from_json(partial_json, partial_mode='trailing-strings')
+print(result)  # Output: {'name': 'John', 'age': 30, 'city': 'New Yor'}
+```
+
+### Catching Duplicate Keys
+
+The `catch_duplicate_keys=True` option can be used to raise a `ValueError` if an object contains duplicate keys.
+
+```python
+import jiter
+
+json_with_dupes = b'{"foo": 1, "foo": 2}'
+
+# Default behavior (last value wins)
+result = jiter.from_json(json_with_dupes)
+print(result)  # Output: {'foo': 2}
+
+# Catch duplicate keys
+try:
+    jiter.from_json(json_with_dupes, catch_duplicate_keys=True)
+except ValueError as e:
+    print(f'Error: {e}')
+```
+

venv/lib/python3.12/site-packages/jiter-0.14.0.dist-info/RECORD

@@ -0,0 +1,11 @@
+jiter-0.14.0.dist-info/INSTALLER,sha256=zuuue4knoyJ-UwPPXg8fezS7VCrXJQrAP7zeNuwvFQg,4
+jiter-0.14.0.dist-info/METADATA,sha256=0lyKL1x9Gu78v5TYL6MguN-TXK0fdIzKLSC8mmIQvZI,5212
+jiter-0.14.0.dist-info/RECORD,,
+jiter-0.14.0.dist-info/WHEEL,sha256=F6wS_EyyTApAlVDO0HV37reS5C0BQB3Ecd85S9pKlHg,147
+jiter-0.14.0.dist-info/licenses/LICENSE,sha256=fHE0ufe5eMA_yodVF885jbkfGbu4EJtmhedCqj9XRo4,1091
+jiter-0.14.0.dist-info/sboms/jiter-python.cyclonedx.json,sha256=5v3DyzZZFCeM9MBgsso1__bJxSIge_ZkB6V4bZIBxSU,83375
+jiter/__init__.py,sha256=Fp9HkOixiYYDSiC_80vmiJ_sCoCGT8OAh48yltm0lP0,103
+jiter/__init__.pyi,sha256=UJVBfIIdO79ycPzZZ7wqL6SLBgFmzCMOZv0J6kybmpM,2378
+jiter/__pycache__/__init__.cpython-312.pyc,,
+jiter/jiter.cpython-312-x86_64-linux-gnu.so,sha256=03oVGh4i1xUB3K4K996I9XTOtBSVOAiFu1hoz91Z_js,826152
+jiter/py.typed,sha256=47DEQpj8HBSa-_TImW-5JCeuQeRkm5NMpJWZG3hSuFU,0

venv/lib/python3.12/site-packages/jiter-0.14.0.dist-info/WHEEL

@@ -0,0 +1,5 @@
+Wheel-Version: 1.0
+Generator: maturin (1.13.1)
+Root-Is-Purelib: false
+Tag: cp312-cp312-manylinux_2_17_x86_64
+Tag: cp312-cp312-manylinux2014_x86_64

venv/lib/python3.12/site-packages/jiter-0.14.0.dist-info/licenses/LICENSE

@@ -0,0 +1,21 @@
+The MIT License (MIT)
+
+Copyright (c) 2022 to present Samuel Colvin
+
+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.