fix: repair broken multi-stage Dockerfile.sg_only for 3 protonmail tasks

The generator didn't handle multi-stage builds (FROM ... AS source / FROM
node:...) or multi-line RUN continuations. Manually rebuild sg_only
Dockerfiles preserving the multi-stage pattern and complete apt-get
install command.

Affected tasks:
- protonmail-dropdown-sizing-fix-001
- protonmail-holiday-calendar-fix-001
- protonmail-conv-testhooks-fix-001

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

Author: sjarmak

benchmarks/ccb_fix/protonmail-conv-testhooks-fix-001/environment/Dockerfile.sg_only

@@ -1,13 +1,22 @@
 # protonmail-conv-testhooks-fix-001 — sg_only_env variant (v2: clone-at-verify)
 # Source files truncated — agent uses Sourcegraph MCP for code access.
 # Verifier clones mirror at verification time to restore source.
+#
+# Multi-stage rebuild: sweap-images for protonmail have corrupted system
+# binaries. Copy /app into a fresh Node.js base, then truncate source.
 
-FROM jefzda/sweap-images:protonmail.webclients-protonmail__webclients-c6f65d205c401350a226bb005f42fac1754b0b5b
+FROM jefzda/sweap-images:protonmail.webclients-protonmail__webclients-c6f65d205c401350a226bb005f42fac1754b0b5b AS source
 
-ENV SOURCEGRAPH_REPO_NAME=sg-benchmarks/webclients--c6f65d20
+FROM node:16.20.2-bullseye
 
+ENV SOURCEGRAPH_REPO_NAME=sg-benchmarks/webclients--c6f65d20
 
 RUN apt-get update && apt-get install -y --no-install-recommends \
+    git jq python3 curl ca-certificates \
+    && rm -rf /var/lib/apt/lists/*
+
+COPY --from=source /app /app
+
 RUN curl -LsSf https://astral.sh/uv/0.7.13/install.sh | sh || true
 RUN mkdir -p /logs /workspace
 

benchmarks/ccb_fix/protonmail-dropdown-sizing-fix-001/environment/Dockerfile.sg_only

@@ -1,13 +1,22 @@
 # protonmail-dropdown-sizing-fix-001 — sg_only_env variant (v2: clone-at-verify)
 # Source files truncated — agent uses Sourcegraph MCP for code access.
 # Verifier clones mirror at verification time to restore source.
+#
+# Multi-stage rebuild: sweap-images for protonmail have corrupted system
+# binaries. Copy /app into a fresh Node.js base, then truncate source.
 
-FROM jefzda/sweap-images:protonmail.webclients-protonmail__webclients-8be4f6cb9380fcd2e67bcb18cef931ae0d4b869c
+FROM jefzda/sweap-images:protonmail.webclients-protonmail__webclients-8be4f6cb9380fcd2e67bcb18cef931ae0d4b869c AS source
 
-ENV SOURCEGRAPH_REPO_NAME=sg-benchmarks/webclients--8be4f6cb
+FROM node:16.20.2-bullseye
 
+ENV SOURCEGRAPH_REPO_NAME=sg-benchmarks/webclients--8be4f6cb
 
 RUN apt-get update && apt-get install -y --no-install-recommends \
+    git jq python3 curl ca-certificates \
+    && rm -rf /var/lib/apt/lists/*
+
+COPY --from=source /app /app
+
 RUN curl -LsSf https://astral.sh/uv/0.7.13/install.sh | sh || true
 RUN mkdir -p /logs /workspace
 

benchmarks/ccb_fix/protonmail-holiday-calendar-fix-001/environment/Dockerfile.sg_only

@@ -1,13 +1,22 @@
 # protonmail-holiday-calendar-fix-001 — sg_only_env variant (v2: clone-at-verify)
 # Source files truncated — agent uses Sourcegraph MCP for code access.
 # Verifier clones mirror at verification time to restore source.
+#
+# Multi-stage rebuild: sweap-images for protonmail have corrupted system
+# binaries. Copy /app into a fresh Node.js base, then truncate source.
 
-FROM jefzda/sweap-images:protonmail.webclients-protonmail__webclients-369fd37de29c14c690cb3b1c09a949189734026f
+FROM jefzda/sweap-images:protonmail.webclients-protonmail__webclients-369fd37de29c14c690cb3b1c09a949189734026f AS source
 
-ENV SOURCEGRAPH_REPO_NAME=sg-benchmarks/webclients--369fd37d
+FROM node:16.20.2-bullseye
 
+ENV SOURCEGRAPH_REPO_NAME=sg-benchmarks/webclients--369fd37d
 
 RUN apt-get update && apt-get install -y --no-install-recommends \
+    git jq python3 curl ca-certificates \
+    && rm -rf /var/lib/apt/lists/*
+
+COPY --from=source /app /app
+
 RUN curl -LsSf https://astral.sh/uv/0.7.13/install.sh | sh || true
 RUN mkdir -p /logs /workspace