docs(install): mention FreeBSD support (#1010)

Co-authored-by: factory-droid[bot] <138933559+factory-droid[bot]@users.noreply.github.com>

website/docs/getting-started/installation.md

@@ -30,7 +30,7 @@ curl -fsSL https://raw.githubusercontent.com/steveyegge/beads/main/scripts/insta
 ```
 
 The installer will:
-- Detect your platform (macOS/Linux, amd64/arm64)
+- Detect your platform (macOS/Linux/FreeBSD, amd64/arm64)
 - Install via `go install` if Go is available
 - Fall back to building from source if needed
 - Guide you through PATH setup if necessary
@@ -79,6 +79,18 @@ paru -S beads-git
 go install github.com/steveyegge/beads/cmd/bd@latest
 ```
 
+### FreeBSD
+
+**Via quick install script**:
+```bash
+curl -fsSL https://raw.githubusercontent.com/steveyegge/beads/main/scripts/install.sh | bash
+```
+
+**Via go install**:
+```bash
+go install github.com/steveyegge/beads/cmd/bd@latest
+```
+
 ### Windows 11
 
 Beads ships with native Windows support—no MSYS or MinGW required.