feat: general-purpose Daytona runner, GHCR base images, and task registry

Add scripts/daytona_runner.py — a complete benchmark runner that creates
Daytona sandboxes dynamically from task Dockerfiles, runs Claude Code,
verifies results, and cleans up. Supports all 4 config modes, parallel
execution, OAuth/API key auth, dry-run validation, and suite selection.

Supporting changes:
- scripts/build_daytona_registry.py: generates daytona_task_registry.json
  (283 tasks, 249 Daytona-ready across 19 suites)
- scripts/push_base_images_ghcr.sh: build-push-clean script for 22
  ccb-repo base images to ghcr.io/sjarmak/
- base_images/Dockerfile.*: fix 8 Dockerfiles to use git clone instead
  of COPY from nonexistent _clone_cache directory
- base_images/update_task_dockerfiles.py: use GHCR prefix for rewrites
- 108 task Dockerfiles: FROM ccb-repo-* → FROM ghcr.io/sjarmak/ccb-repo-*
- docs/DAYTONA.md: setup guide covering credentials, configs, and usage

Author: sjarmak

base_images/Dockerfile.containerd-317286ac

@@ -8,8 +8,6 @@ RUN apt-get update && apt-get install -y --no-install-recommends \
     curl \
     && rm -rf /var/lib/apt/lists/*
 
-COPY _clone_cache/containerd-317286ac/ /workspace/
-
-RUN cd /workspace && \
+RUN git clone --depth 1 https://github.com/sg-evals/containerd--317286ac.git . && \
     git config user.email "agent@example.com" && \
     git config user.name "Agent"

base_images/Dockerfile.etcd-d89978e8

@@ -8,8 +8,6 @@ RUN apt-get update && apt-get install -y --no-install-recommends \
     curl \
     && rm -rf /var/lib/apt/lists/*
 
-COPY _clone_cache/etcd-d89978e8/ /workspace/
-
-RUN cd /workspace && \
+RUN git clone --depth 1 https://github.com/sg-evals/etcd--d89978e8.git . && \
     git config user.email "agent@example.com" && \
     git config user.name "Agent"

base_images/Dockerfile.flask-798e006f

@@ -8,8 +8,6 @@ RUN apt-get update && apt-get install -y --no-install-recommends \
     curl \
     && rm -rf /var/lib/apt/lists/*
 
-COPY _clone_cache/flask-798e006f/ /workspace/
-
-RUN cd /workspace && \
+RUN git clone --depth 1 https://github.com/sg-evals/flask--798e006f.git . && \
     git config user.email "agent@example.com" && \
     git config user.name "Agent"

base_images/Dockerfile.numpy-a639fbf5

@@ -8,8 +8,6 @@ RUN apt-get update && apt-get install -y --no-install-recommends \
     curl \
     && rm -rf /var/lib/apt/lists/*
 
-COPY _clone_cache/numpy-a639fbf5/ /workspace/
-
-RUN cd /workspace && \
+RUN git clone --depth 1 https://github.com/sg-evals/numpy--a639fbf5.git . && \
     git config user.email "agent@example.com" && \
     git config user.name "Agent"

base_images/Dockerfile.pandas-41968da5

@@ -8,8 +8,6 @@ RUN apt-get update && apt-get install -y --no-install-recommends \
     curl \
     && rm -rf /var/lib/apt/lists/*
 
-COPY _clone_cache/pandas-41968da5/ /workspace/
-
-RUN cd /workspace && \
+RUN git clone --depth 1 https://github.com/sg-evals/pandas--41968da5.git . && \
     git config user.email "agent@example.com" && \
     git config user.name "Agent"

base_images/Dockerfile.requests-421b8733

@@ -8,8 +8,6 @@ RUN apt-get update && apt-get install -y --no-install-recommends \
     curl \
     && rm -rf /var/lib/apt/lists/*
 
-COPY _clone_cache/requests-421b8733/ /workspace/
-
-RUN cd /workspace && \
+RUN git clone --depth 1 https://github.com/sg-evals/requests--421b8733.git . && \
     git config user.email "agent@example.com" && \
     git config user.name "Agent"

base_images/Dockerfile.rust-01f6ddf7

@@ -8,8 +8,6 @@ RUN apt-get update && apt-get install -y --no-install-recommends \
     curl \
     && rm -rf /var/lib/apt/lists/*
 
-COPY _clone_cache/rust-01f6ddf7/ /workspace/
-
-RUN cd /workspace && \
+RUN git clone --depth 1 https://github.com/sg-evals/rust--01f6ddf7.git . && \
     git config user.email "agent@example.com" && \
     git config user.name "Agent"

base_images/Dockerfile.scikit-learn-cb7e82dd

@@ -8,8 +8,6 @@ RUN apt-get update && apt-get install -y --no-install-recommends \
     curl \
     && rm -rf /var/lib/apt/lists/*
 
-COPY _clone_cache/scikit-learn-cb7e82dd/ /workspace/
-
-RUN cd /workspace && \
+RUN git clone --depth 1 https://github.com/sg-evals/scikit-learn--cb7e82dd.git . && \
     git config user.email "agent@example.com" && \
     git config user.name "Agent"

base_images/update_task_dockerfiles.py

@@ -213,9 +213,12 @@ def extract_task_specific_lines(lines: list[str], base: dict) -> list[str]:
     return result
 
 
+GHCR_PREFIX = "ghcr.io/sjarmak"
+
+
 def rewrite_dockerfile(path: Path, base: dict, task_lines: list[str], dry_run: bool) -> bool:
-    """Rewrite a task Dockerfile to use a base image."""
-    new_lines = [f"FROM {base['tag']}"]
+    """Rewrite a task Dockerfile to use a base image from GHCR."""
+    new_lines = [f"FROM {GHCR_PREFIX}/{base['tag']}"]
 
     if task_lines:
         new_lines.append("")

benchmarks/ccb_build/camel-fix-protocol-feat-001/environment/Dockerfile

@@ -1 +1 @@
-FROM ccb-repo-camel-1006f047
+FROM ghcr.io/sjarmak/ccb-repo-camel-1006f047