docs: http_request tool broken by three zero-value config defaults

.cargo/config.toml

@@ -2,4 +2,8 @@
 rustflags = ["-C", "link-arg=-static"]
 
 [target.aarch64-unknown-linux-musl]
+linker = "aarch64-linux-musl-gcc"
 rustflags = ["-C", "link-arg=-static"]
+
+[target.aarch64-unknown-linux-gnu]
+linker = "aarch64-linux-gnu-gcc"

Cargo.toml

@@ -13,7 +13,7 @@ repository = "https://github.com/zeroclaw-labs/zeroclaw"
 readme = "README.md"
 keywords = ["ai", "agent", "cli", "assistant", "chatbot"]
 categories = ["command-line-utilities", "api-bindings"]
-rust-version = "1.87"
+rust-version = "1.91"
 
 [dependencies]
 # CLI - minimal and fast
@@ -111,7 +111,7 @@ which = "7.0"
 
 # WebSocket client channels (Discord/Lark/DingTalk)
 tokio-tungstenite = { version = "0.28", features = ["rustls-tls-webpki-roots"] }
-futures-util = { version = "0.3", default-features = false, features = ["sink"] }
+futures-util = { version = "0.3", default-features = false, features = ["sink", "alloc"] }
 regex = "1.10"
 hostname = "0.4.2"
 rustls = "0.23"
@@ -164,7 +164,7 @@ wa-rs-tokio-transport = { version = "0.2", optional = true, default-features = f
 # Raspberry Pi GPIO / Landlock (Linux only) — target-specific to avoid compile failure on macOS
 [target.'cfg(target_os = "linux")'.dependencies]
 rppal = { version = "0.22", optional = true }
-landlock = { version = "0.4", optional = true }
+landlock = { version = "0.4" }
 
 # Unix-specific dependencies (for root check, etc.)
 [target.'cfg(unix)'.dependencies]
@@ -183,7 +183,10 @@ browser-native = ["dep:fantoccini"]
 # Backward-compatible alias for older invocations
 fantoccini = ["browser-native"]
 # Sandbox feature aliases used by cfg(feature = "sandbox-*")
-sandbox-landlock = ["dep:landlock"]
+# sandbox-landlock is now a no-op: landlock compiles automatically on Linux
+# (via [target.'cfg(target_os = "linux")'.dependencies]) without requiring a flag.
+# Keep for backward compatibility with build scripts that pass --features sandbox-landlock.
+sandbox-landlock = []
 sandbox-bubblewrap = []
 # Backward-compatible alias for older invocations
 landlock = ["sandbox-landlock"]