Initial Renamr scaffold: Tauri (Rust core + React/TS UI), naming-expression engine ported+tested

src-tauri/Cargo.toml

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+[package]
+name = "renamr"
+version.workspace = true
+edition.workspace = true
+license.workspace = true
+
+[lib]
+name = "renamr_lib"
+crate-type = ["staticlib", "cdylib", "rlib"]
+
+[build-dependencies]
+tauri-build = { version = "2", features = [] }
+
+[dependencies]
+renamr-core = { path = "../crates/renamr-core" }
+tauri = { version = "2", features = [] }
+serde = { version = "1", features = ["derive"] }
+serde_json = "1"

src-tauri/build.rs

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+fn main() {
+    tauri_build::build()
+}

src-tauri/src/lib.rs

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+use renamr_core::format::ExpressionFormat;
+use renamr_core::string_bindings;
+use std::collections::HashMap;
+
+/// Renders a naming-scheme expression against a set of binding values.
+/// This is the Tauri-facing entry point into the core format engine, used by the
+/// rename-preview panel in the UI so users see live results as they edit a pattern.
+#[tauri::command]
+fn render_expression(expression: String, bindings: HashMap<String, String>) -> Result<String, String> {
+    let compiled = ExpressionFormat::compile(&expression).map_err(|e| e.to_string())?;
+    compiled
+        .format(&string_bindings(bindings))
+        .map_err(|e| e.to_string())
+}
+
+#[cfg_attr(mobile, tauri::mobile_entry_point)]
+pub fn run() {
+    tauri::Builder::default()
+        .invoke_handler(tauri::generate_handler![render_expression])
+        .run(tauri::generate_context!())
+        .expect("error while running Renamr");
+}

src-tauri/src/main.rs

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+// Prevents an additional console window on Windows in release builds.
+#![cfg_attr(not(debug_assertions), windows_subsystem = "windows")]
+
+fn main() {
+    renamr_lib::run();
+}

src-tauri/tauri.conf.json

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+{
+  "$schema": "https://schema.tauri.app/config/2",
+  "productName": "Renamr",
+  "version": "0.1.0",
+  "identifier": "com.renamr.app",
+  "build": {
+    "beforeDevCommand": "npm run dev",
+    "beforeBuildCommand": "npm run build",
+    "devUrl": "http://localhost:5173",
+    "frontendDist": "../dist"
+  },
+  "app": {
+    "windows": [
+      {
+        "title": "Renamr",
+        "width": 1100,
+        "height": 720,
+        "minWidth": 720,
+        "minHeight": 480
+      }
+    ],
+    "security": {
+      "csp": null
+    }
+  },
+  "bundle": {
+    "active": true,
+    "targets": "all",
+    "icon": [
+      "icons/32x32.png",
+      "icons/128x128.png",
+      "icons/[email protected]",
+      "icons/icon.icns",
+      "icons/icon.ico"
+    ]
+  }
+}