feat: implement branch-aware context switching and integrate tantivy fuzzy search index

server/Cargo.toml

@@ -16,6 +16,7 @@ rust-mcp-sdk = "2.0.0"
 serde = { version = "1.0.229", features = ["derive"] }
 serde_json = "1.0.151"
 strsim = "0.11.1"
+tantivy = "0.26.1"
 tokio = { version = "1.53.1", features = ["full"] }
 tokio-util = { version = "0.7.19", features = ["io"] }
 uuid = { version = "1.26.0", features = ["v4"] }