Switch from requirements.txt to uv for reproducible dependency management

- Add pyproject.toml with project metadata and uv source overrides for
accelerate, diffusers, and peft (pinned to git HEAD commits via uv lock)
- Add uv.lock (95 packages, including pinned git commits for git deps)
- Remove requirements.txt and pre-requirements.txt (uv replaces both)

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

pre-requirements.txt

@@ -1 +0,0 @@
-pip>=23.0.0

pyproject.toml

@@ -0,0 +1,29 @@
+[project]
+name = "firered-image-edit"
+version = "1.0.0"
+requires-python = ">=3.13"
+dependencies = [
+    "transformers>=5.0.0",
+    "huggingface_hub",
+    "sentencepiece",
+    "torchvision",
+    "kernels",
+    "spaces",
+    "hf_xet",
+    "gradio>=5.0.0",
+    "torch",
+    "numpy",
+    "av",
+    # git deps — pinned to exact commits by uv lock
+    "accelerate",
+    "diffusers",
+    "peft",
+]
+
+[tool.uv]
+package = false
+
+[tool.uv.sources]
+accelerate = { git = "https://github.com/huggingface/accelerate.git" }
+diffusers  = { git = "https://github.com/huggingface/diffusers.git" }
+peft       = { git = "https://github.com/huggingface/peft.git" }

requirements.txt

@@ -1,14 +0,0 @@
-git+https://github.com/huggingface/accelerate.git
-git+https://github.com/huggingface/diffusers.git
-git+https://github.com/huggingface/peft.git
-transformers>=5.0.0
-huggingface_hub
-sentencepiece
-torchvision
-kernels
-spaces
-hf_xet
-gradio>=5.0.0
-torch
-numpy
-av