Accumulate config engine, build metadata, and doc updates

Remaining files from the backlog: Lua config engine
additions (general/register/support/window), workspace Cargo.toml/
Cargo.lock churn from the new dependencies added elsewhere in this
sweep, srdwm/main.rs wiring, and docs (DEFAULTS.md plus a new
SESSION_HANDOFF.md written mid-session for continuity across a restart
- see that file's own header for what it is and isn't).

1 files changed, 2 insertions, 0 deletions

diff --git a/crates/config/src/engine/support.rs b/crates/config/src/engine/support.rs
index 9346499..0f83885 100644
--- a/crates/config/src/engine/support.rs
+++ b/crates/config/src/engine/support.rs
@@ -82,6 +82,7 @@ pub(super) fn validate(s: &SharedState) -> Vec<String> {
     check_range("layout.floating.gaps.outer", 0.0, 100.0);
     check_range("general.border_width", 0.0, 20.0);
     check_range("theme.decorations.border.width", 0.0, 20.0);
+    check_range("theme.decorations.border.radius", 0.0, 100.0);
     check_range("general.animation_duration", 0.0, 1000.0);
     check_range("general.resize_margin", 1.0, 50.0);
     check_range("performance.max_fps", 30.0, 240.0);
@@ -242,6 +243,7 @@ pub(super) fn default_config() -> HashMap<String, ConfigValue> {
     set("theme.colors.success", String("#a3be8c".into()));
 
     set("theme.decorations.border.width", Number(2.0));
+    set("theme.decorations.border.radius", Number(6.0));
     set("theme.decorations.border.active_color", String("#88c0d0".into()));
     set("theme.decorations.border.inactive_color", String("#2e3440".into()));
     set("theme.decorations.border.focused_style", String("solid".into()));