feat: per-repo issue tracker, Gitea support, PR review pipeline (#10)

compliance-agent/src/agent.rs

@@ -43,4 +43,35 @@ impl ComplianceAgent {
         );
         orchestrator.run(repo_id, trigger).await
     }
+
+    /// Run a PR review: scan the diff and post review comments.
+    pub async fn run_pr_review(
+        &self,
+        repo_id: &str,
+        pr_number: u64,
+        base_sha: &str,
+        head_sha: &str,
+    ) -> Result<(), crate::error::AgentError> {
+        let repo = self
+            .db
+            .repositories()
+            .find_one(mongodb::bson::doc! {
+                "_id": mongodb::bson::oid::ObjectId::parse_str(repo_id)
+                    .map_err(|e| crate::error::AgentError::Other(e.to_string()))?
+            })
+            .await?
+            .ok_or_else(|| {
+                crate::error::AgentError::Other(format!("Repository {repo_id} not found"))
+            })?;
+
+        let orchestrator = PipelineOrchestrator::new(
+            self.config.clone(),
+            self.db.clone(),
+            self.llm.clone(),
+            self.http.clone(),
+        );
+        orchestrator
+            .run_pr_review(&repo, repo_id, pr_number, base_sha, head_sha)
+            .await
+    }
 }