chore(lints): apply strict workspace Clippy policy

Cargo.toml

@@ -116,6 +116,9 @@ webbrowser = "1"
 unsafe_code = "deny"
 
 [workspace.lints.clippy]
+cognitive_complexity = "deny"
+too_many_arguments = "deny"
+wildcard_imports = "deny"
 dbg_macro = "warn"
 # VectorCraft never crashes: shipped code returns `Result`/`Option` instead of panicking (see
 # AGENTS.md › Robustness). Tests may unwrap (clippy.toml).

clippy.toml

@@ -6,3 +6,4 @@ allow-panic-in-tests = true
 disallowed-types = [
     { path = "egui::ComboBox", reason = "use craft_ui::ComboBox: egui's combo box menu can't grow back while open (egui#5225)" },
 ]
+cognitive-complexity-threshold = 30