fix: resolve pip dependency conflicts for HF Spaces build

- requirements.txt: fully pinned compatible versions, no loose bounds
- pyproject.toml: cleared dependencies[] to prevent pip installing
torch/openenv-core/openai during Docker build (these caused resolution-too-deep)
- .dockerignore: exclude uv.lock, test venvs, scratch files from Docker image

Root cause of 'resolution-too-deep':
pyproject.toml was being read by pip during build and its dependencies
(torch>=2.11.0, openenv-core, openai, fastapi==0.110.0) conflicted with
gradio[oauth,mcp]==6.13.0's requirements, creating an unsolvable graph.

.dockerignore

@@ -2,6 +2,7 @@
 .gitignore
 .DS_Store
 .venv
+.env
 .pytest_cache
 __pycache__
 *.pyc
@@ -23,3 +24,17 @@ build
 .cursor
 .vscode
 
+# uv lock file (not needed in Docker, causes confusion)
+uv.lock
+
+# Test venvs created during debugging
+venv_test*
+.tmp_venv
+
+# Scratch test scripts
+test_pip*.sh
+req_test*.txt
+get_logs.py
+
+# Large temp dirs
+scratch/

pyproject.toml

@@ -8,19 +8,9 @@ version = "1.0.0"
 description = "An OpenEnv-compliant debugging environment for AI agents"
 readme = "README.md"
 requires-python = ">=3.10"
-dependencies = [
-    "fastapi==0.110.0",
-    "uvicorn==0.29.0",
-    "pydantic>=2.9.0",
-    "openai==2.7.2",
-    "openenv-core>=0.2.0",
-    "requests==2.31.0",
-    "python-dotenv==1.0.1",
-    "pytest==8.1.0",
-    "httpx==0.27.0",
-    "RestrictedPython==7.0",
-    "torch>=2.11.0",
-]
+# Dependencies are managed via requirements.txt to avoid pip resolution conflicts
+# during HF Spaces Docker builds. Keep this list empty.
+dependencies = []
 
 [tool.setuptools.packages.find]
 include = ["env*", "server*"]

requirements.txt

@@ -1,10 +1,14 @@
-gradio[oauth,mcp]==6.13.0
-pydantic>=2.0.0
-wandb>=0.18.0
-datasets>=3.0.0
-transformers>=4.46.0
-accelerate>=1.0.0
+# ── Training dependencies ──────────────────────────────────────────────────────
+# Fully pinned to a pre-validated compatible set.
+# DO NOT add loose deps here — they cause pip backtracking (resolution-too-deep).
+# gradio is intentionally omitted: HF Spaces injects gradio[oauth,mcp]==6.13.0 itself.
+
+wandb==0.18.7
+datasets==3.0.2
+transformers==4.46.3
+accelerate==1.0.1
 trl==0.14.0
-mergekit
-bitsandbytes>=0.43.0
 peft==0.13.2
+bitsandbytes==0.43.3
+mergekit==0.1.4
+pydantic==2.10.6