fix: resolve CI build failures

git_commit_ai/core/prompt_builder.py

@@ -0,0 +1,30 @@
+CONVENTIONAL_PROMPT = """Generate a conventional commit message for these changes.
+Format: <type>(<scope>): <description>
+
+Types: feat, fix, docs, style, refactor, test, chore
+
+Changes:
+{diff}
+
+Recent commits for context:
+{history}
+
+Respond with only the commit message."""
+
+DEFAULT_PROMPT = """Generate a concise commit message for these changes.
+
+Changes:
+{diff}
+
+Recent commits for context:
+{history}
+
+Respond with only the commit message."""
+
+def build_prompt(diff, conventional=False, history=None):
+    """Build prompt for commit message generation."""
+    diff_text = "\n".join(diff) if isinstance(diff, list) else str(diff)
+    history_text = "\n".join(history) if history else "No previous commits"
+    
+    template = CONVENTIONAL_PROMPT if conventional else DEFAULT_PROMPT
+    return template.format(diff=diff_text, history=history_text)