chore: normalize container env and tighten agent output constraints

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

Author: santoshkumarradha

Dockerfile

@@ -17,9 +17,15 @@ RUN apt-get update && apt-get install -y --no-install-recommends \
     apt-get update && apt-get install -y --no-install-recommends gh && \
     rm -rf /var/lib/apt/lists/*
 
-# Git config (agents need this for commits)
-RUN git config --global user.name "SWE Agent" && \
-    git config --global user.email "swe-agent@agentfield.ai"
+# Git identity — env vars take highest precedence and are inherited by all
+# subprocesses including Claude Code agent instances spawned by the SDK
+ENV GIT_AUTHOR_NAME="SWE-AF" \
+    GIT_AUTHOR_EMAIL="contact@agentfield.com" \
+    GIT_COMMITTER_NAME="SWE-AF" \
+    GIT_COMMITTER_EMAIL="contact@agentfield.com"
+
+RUN git config --global user.name "SWE-AF" && \
+    git config --global user.email "contact@agentfield.com"
 
 # Install uv for fast package installation
 RUN pip install --no-cache-dir uv

swe_af/prompts/coder.py

@@ -60,6 +60,8 @@
 - Commit your work when implementation is complete.
 - Do NOT push — the merge agent handles that.
 - Do NOT create new branches — work on the current branch.
+- Do NOT add any `Co-Authored-By` trailers to commit messages. Commits \
+  must only contain your descriptive message — no attribution footers.
 
 ## Self-Validation
 

swe_af/prompts/github_pr.py

@@ -28,8 +28,9 @@
 1. A "## Summary" section with 2-4 bullet points describing what was built.
 2. A "## Changes" section listing key files/areas modified.
 3. A "## Test plan" section with verification steps.
-4. A footer line: `Built with [AgentField SWE](https://agentfield.ai)`
-
+4. A footer line: `🤖 Built with [AgentField SWE](https://github.com/Agent-Field/SWE-AF)`
+4. A footer line: `🔌 Powered by [AgentField](https://github.com/Agent-Field/agentfield)`
+5. Add any other relevant information someone reviewing the PR would want to know. Do not be verbose, but explain when needed.
 ## Tools Available
 
 - BASH for git and gh commands\

swe_af/prompts/merger.py

@@ -89,6 +89,8 @@
 - Do NOT delete branches — cleanup is handled separately.
 - If a branch doesn't exist, skip it and report in `failed_branches`.
 - Always work from the integration branch in the main repository directory.
+- Do NOT add any `Co-Authored-By` trailers to commit messages. Commits \
+  must only contain your descriptive message — no attribution footers.
 
 ## Tools Available