feat: sunbeam reindex-code CLI verb + ReindexCode proto

Proto: ReindexCode RPC with org/repo/branch filters.
CLI: sunbeam reindex-code [--org studio] [--repo owner/name] [--endpoint ...]
Calls Sol's gRPC ReindexCode endpoint, prints indexed symbol count.

sunbeam-proto/proto/code.proto

@@ -5,6 +5,19 @@ package sunbeam.code.v1;
 // the `sunbeam code` TUI client and Sol's server-side agent loop.
 service CodeAgent {
   rpc Session(stream ClientMessage) returns (stream ServerMessage);
+  rpc ReindexCode(ReindexCodeRequest) returns (ReindexCodeResponse);
+}
+
+message ReindexCodeRequest {
+  string org = 1;           // optional: filter to an org (empty = all)
+  string repo = 2;          // optional: specific repo (empty = all)
+  string branch = 3;        // optional: specific branch (empty = default)
+}
+
+message ReindexCodeResponse {
+  uint32 repos_indexed = 1;
+  uint32 symbols_indexed = 2;
+  string error = 3;         // empty on success
 }
 
 // ── Client → Sol ───────────────────────────────────────────────

sunbeam/src/cli.rs

@@ -145,6 +145,23 @@ pub enum Verb {
         action: Option<crate::code::CodeCommand>,
     },
 
+    /// Reindex Gitea repos into Sol's code search index.
+    #[command(name = "reindex-code")]
+    ReindexCode {
+        /// Filter to a specific org.
+        #[arg(long)]
+        org: Option<String>,
+        /// Index a specific repo (owner/name format).
+        #[arg(long)]
+        repo: Option<String>,
+        /// Index a specific branch (default: repo's default branch).
+        #[arg(long)]
+        branch: Option<String>,
+        /// Sol gRPC endpoint.
+        #[arg(long, default_value = "http://127.0.0.1:50051")]
+        endpoint: String,
+    },
+
     /// Self-update from latest mainline commit.
     Update,
 
@@ -1060,6 +1077,33 @@ pub async fn dispatch() -> Result<()> {
         },
 
         Some(Verb::Code { action }) => crate::code::cmd_code(action).await,
+        Some(Verb::ReindexCode { org, repo, branch, endpoint }) => {
+            use sunbeam_proto::sunbeam_code_v1::code_agent_client::CodeAgentClient;
+            use sunbeam_proto::sunbeam_code_v1::ReindexCodeRequest;
+
+            tracing::info!(endpoint = endpoint.as_str(), "Connecting to Sol for reindex");
+            let mut client = CodeAgentClient::connect(endpoint)
+                .await
+                .map_err(|e| sunbeam_sdk::error::SunbeamError::Other(format!("Failed to connect: {e}")))?;
+
+            let request = ReindexCodeRequest {
+                org: org.unwrap_or_default(),
+                repo: repo.unwrap_or_default(),
+                branch: branch.unwrap_or_default(),
+            };
+
+            let response = client.reindex_code(request)
+                .await
+                .map_err(|e| sunbeam_sdk::error::SunbeamError::Other(format!("Reindex failed: {e}")))?;
+
+            let resp = response.into_inner();
+            if resp.error.is_empty() {
+                println!("Indexed {} symbols across {} repos", resp.symbols_indexed, resp.repos_indexed);
+            } else {
+                eprintln!("Error: {}", resp.error);
+            }
+            Ok(())
+        }
 
         Some(Verb::Update) => sunbeam_sdk::update::cmd_update().await,
 

sunbeam/tests/code_integration.rs

@@ -72,6 +72,10 @@ impl CodeAgent for MockCodeAgent {
 
         Ok(Response::new(Box::pin(ReceiverStream::new(rx))))
     }
+
+    async fn reindex_code(&self, _req: Request<ReindexCodeRequest>) -> Result<Response<ReindexCodeResponse>, Status> {
+        Ok(Response::new(ReindexCodeResponse { repos_indexed: 0, symbols_indexed: 0, error: "mock".into() }))
+    }
 }
 
 #[tokio::test]