Build offline OpenPrestige release bundles

Rename the injector and package it with an embedded payload for Windows, Linux, and macOS x64/ARM64. Add a core-only ImGui native build, multi-platform CI and release packaging, and shared per-user storage with legacy config migration.

src/main/java/dev/zprestige/prestige/ui/LocalConfigs.java

@@ -3,6 +3,7 @@ package dev.zprestige.prestige.ui;
 import com.google.gson.Gson;
 import com.google.gson.GsonBuilder;
 import com.google.gson.JsonObject;
+import dev.zprestige.prestige.client.AppPaths;
 import dev.zprestige.prestige.client.Prestige;
 
 import java.io.IOException;
@@ -17,7 +18,7 @@ import java.util.Locale;
 import java.util.stream.Stream;
 
 /**
- * Local (offline) backend of the Configs page. Every config is one JSON file in {@code <gameDir>/prestige/configs/}:
+ * Local (offline) backend of the Configs page. Every config is one JSON file in the shared OpenPrestige data directory:
  * the card metadata plus the client's own snapshot ({@code ConfigManager.saveToJson()}), which is applied again with
  * {@code ConfigManager.loadFromJson(String)}. "Public configs" lists the configs saved with Public visibility, "Personal configs"
  * lists all of them; Create saves the current module/HUD state, Update overwrites it, Delete removes the file.
@@ -45,6 +46,10 @@ public final class LocalConfigs {
     private static String lastQuery = null;
 
     static Path dir() {
+        return AppPaths.configs().resolve("presets");
+    }
+
+    private static Path legacyDir() {
         Path base;
         try { base = net.fabricmc.loader.api.FabricLoader.getInstance().getGameDir(); } catch (Throwable t) { base = Path.of("."); }
         return base.resolve("prestige").resolve("configs");
@@ -86,21 +91,61 @@ public final class LocalConfigs {
                 for (Path p : (Iterable<Path>) s.filter(f -> f.getFileName().toString().endsWith(".json"))::iterator) {
                     try {
                         Entry e = GSON.fromJson(Files.readString(p, StandardCharsets.UTF_8), Entry.class);
-                        if (e == null || e.name == null || e.name.isBlank()) continue;
-                        if (e.tags == null) e.tags = new ArrayList<>();
-                        e.tags.removeIf(java.util.Objects::isNull);
-                        if (e.desc == null) e.desc = "";
-                        if (e.author == null) e.author = "";
-                        if (e.date == null) e.date = "";
-                        ALL.add(e);
+                        if (normalize(e)) ALL.add(e);
                     } catch (Throwable t) { System.out.println("[prestige-ui] config " + p.getFileName() + ": " + t); }
                 }
             }
+            importLegacy(d);
         } catch (IOException e) { System.out.println("[prestige-ui] configs dir: " + e); }
         ALL.sort(Comparator.comparingInt((Entry e) -> e.id).reversed());
         rebuild();
     }
 
+    private static boolean normalize(Entry entry) {
+        if (entry == null || entry.name == null || entry.name.isBlank()) return false;
+        if (entry.tags == null) entry.tags = new ArrayList<>();
+        entry.tags.removeIf(java.util.Objects::isNull);
+        if (entry.desc == null) entry.desc = "";
+        if (entry.author == null) entry.author = "";
+        if (entry.date == null) entry.date = "";
+        return true;
+    }
+
+    private static JsonObject configWithoutId(Entry entry) {
+        JsonObject config = GSON.toJsonTree(entry).getAsJsonObject();
+        config.remove("id");
+        return config;
+    }
+
+    private static void importLegacy(Path directory) throws IOException {
+        Path legacy = legacyDir().toAbsolutePath().normalize();
+        if (!Files.isDirectory(legacy)) return;
+        String key = java.util.UUID.nameUUIDFromBytes(legacy.toString().getBytes(StandardCharsets.UTF_8)).toString();
+        Path marker = directory.resolve(".imported-" + key);
+        if (Files.exists(marker)) return;
+        try (Stream<Path> files = Files.list(legacy)) {
+            for (Path path : files.filter(p -> p.getFileName().toString().endsWith(".json")).toList()) {
+                Entry entry;
+                try {
+                    entry = GSON.fromJson(Files.readString(path, StandardCharsets.UTF_8), Entry.class);
+                } catch (RuntimeException error) {
+                    System.out.println("[prestige-ui] could not import " + path.getFileName() + ": " + error);
+                    continue;
+                }
+                if (!normalize(entry)) continue;
+                JsonObject content = configWithoutId(entry);
+                if (ALL.stream().anyMatch(existing -> configWithoutId(existing).equals(content))) continue;
+                int originalId = entry.id;
+                if (ALL.stream().anyMatch(existing -> existing.id == originalId)) {
+                    entry.id = ALL.stream().mapToInt(existing -> existing.id).max().orElse(0) + 1;
+                }
+                Files.writeString(file(entry), GSON.toJson(entry), StandardCharsets.UTF_8, java.nio.file.StandardOpenOption.CREATE_NEW);
+                ALL.add(entry);
+            }
+        }
+        Files.writeString(marker, "");
+    }
+
     private static Path file(Entry e) { return dir().resolve(e.id + "_" + e.name.replaceAll("[^A-Za-z0-9_.-]", "_") + ".json"); }
 
     private static void write(Entry e) {