Add native Settings and complete live configuration reload

Add compact branded Settings with safe atomic edits, external config refresh and a draggable sidebar. Reconcile services, update connected displays and input devices, apply live layout policy and window rules, and resolve initial floating placement before tiled insertion. Package the Settings launcher and shared Ferese icon.

docs/installation.md

@@ -6,7 +6,7 @@ From the checkout, run the installer as your normal user:
 ./scripts/install.sh
 ```
 
-It builds all three release binaries with the locked dependencies, then uses
+It builds all four release binaries with the locked dependencies, then uses
 `sudo` (or `pkexec`) for installation. Install the Rust toolchain, native build
 dependencies, `desktop-file-utils`, and D-Bus first. Cargo reports missing native
 libraries during the build. The shell requires Rust 1.93 or newer.
@@ -23,8 +23,8 @@ The script works from any directory and preserves your user configuration.
 Use `--help` for all options. To test and install manually:
 
 ```sh
-cargo test -p ferese -p feresectl -p ferese-animation -p ferese-core -p ferese-layout -p ferese-shell --locked
-cargo build --release --locked -p ferese -p ferese-shell -p feresectl
+cargo test -p ferese -p feresectl -p ferese-animation -p ferese-core -p ferese-layout -p ferese-shell -p ferese-settings --locked
+cargo build --release --locked -p ferese -p ferese-shell -p ferese-settings -p feresectl
 sudo bash scripts/install-session.sh YOUR_RELEASE_ID
 ```