Cleanup and security updates.

RELEASE_README.md

@@ -1,17 +1,25 @@
 # PristonTale EU for Linux
 
-Version 0.5.2 installs, updates, repairs, and launches PristonTale EU through a
+Version 0.6.0 installs, updates, repairs, and launches PristonTale EU through a
 native Linux dashboard. Game files come directly from the publisher and are not
 included in this archive.
 
 ## Install
 
-Keep the archive and checksum file together, then run:
+Keep the archive, detached signature, checksum, and
+`launcher-update-public.pem` together. First confirm the public-key fingerprint
+through an independent trusted channel; the expected DER SHA-256 fingerprint is
+`3ae6e8dc483b93796b32e3ca270c367d247caf8d047eb796826c8e558a4a9e34`.
+Then run:
 
 ```text
-sha256sum -c pristontale-eu-linux-installer-v0-5-2.tar.gz.sha256
-tar -xzf pristontale-eu-linux-installer-v0-5-2.tar.gz
-cd pristontale-eu-linux-installer-v0-5-2
+openssl pkey -pubin -in launcher-update-public.pem -outform DER | sha256sum
+openssl dgst -sha256 -verify launcher-update-public.pem \
+  -signature pristontale-eu-linux-installer-v0-6-0.tar.gz.sig \
+  pristontale-eu-linux-installer-v0-6-0.tar.gz
+sha256sum -c pristontale-eu-linux-installer-v0-6-0.tar.gz.sha256
+tar -xzf pristontale-eu-linux-installer-v0-6-0.tar.gz
+cd pristontale-eu-linux-installer-v0-6-0
 ./install.sh
 ```
 
@@ -37,11 +45,6 @@ pristontale-eu gui
 The main launcher button automatically shows **Install**, **Update**, or
 **Play** according to the managed game's state.
 
-Version 0.5.0 is the self-update bootstrap. Future signed launcher releases are
-checked in the background and appear as an **Update Launcher** action. Launcher
-updates are staged separately from game files and retain the previous version
-for rollback.
-
 ## Commands
 
 ```text
@@ -49,16 +52,22 @@ pristontale-eu --help                         Show all commands and options
 pristontale-eu gui                            Open the native dashboard
 pristontale-eu doctor                         Check required host components
 pristontale-eu login-diagnostics              Check the login route without credentials
+pristontale-eu login-diagnostics --runtime proton7
+                                               Compare the direct-Proton prefix read-only
+pristontale-eu login-trace                    Retired; refuses without starting the game
 pristontale-eu update                         Install or update official files
 pristontale-eu update --repair                Verify and repair every game file
 pristontale-eu update --dry-run               Preview an update
 pristontale-eu import-game "/path/to/game"    Import an existing installation
 pristontale-eu prepare                        Build the safe runtime view
-pristontale-eu play                           Launch through Gamescope/Proton
-pristontale-eu play --no-box                  Launch without Gamescope
+pristontale-eu play                           Launch through the managed Proton window
+pristontale-eu play --no-box                  Launch without X11 window styling
+pristontale-eu play --no-world-fix            Compatibility alias for the pristine launch
 pristontale-eu settings                       Show current settings
-pristontale-eu settings --init                Write default settings
+pristontale-eu settings --init                Create/migrate settings without resetting choices
+pristontale-eu settings --reset               Explicitly restore every launcher default
 pristontale-eu launcher-update --check        Check the signed launcher channel
+pristontale-eu launcher-update --verify       Validate the full release without installing it
 pristontale-eu launcher-update                Install and activate an update
 pristontale-eu launcher-update --rollback     Restore the previous launcher
 pristontale-eu sync                           Sync without import discovery
@@ -66,7 +75,6 @@ pristontale-eu wine-update                    Run the legacy WPF updater
 pristontale-eu fetch                          Fetch the publisher launcher
 pristontale-eu setup                          Prepare its Wine environment
 pristontale-eu cache-compatibility PATH       Cache a verified compatibility pair
-pristontale-eu cache-runtime-patch PATH       Cache a verified runtime patch
 ```
 
 Use `./install.sh --dry-run` to preview dependency installation or