fix(mcp): reduce keywords to <=5 for crates.io publish (was causing 400)

Author: Tuntii

crates/rustapi-mcp/Cargo.toml

@@ -7,7 +7,7 @@ edition.workspace = true
 authors.workspace = true
 license.workspace = true
 repository.workspace = true
-keywords = ["web", "framework", "api", "mcp", "llm", "ai", "agents"]
+keywords = ["web", "framework", "api", "mcp", "llm"]
 categories = ["web-programming::http-server", "network-programming"]
 rust-version.workspace = true
 readme = "README.md"
@@ -45,3 +45,4 @@ tokio = { workspace = true, features = ["macros", "rt-multi-thread", "time"] }
 rustapi-rs = { workspace = true, features = ["protocol-mcp"] }
 reqwest = { version = "0.12", default-features = false, features = ["rustls-tls", "json"] }
 serde = { workspace = true, features = ["derive"] }
+