Add CI/CD pipelines, NSIS installer, ES module bundling, and ruff linting

- Add Gitea Actions workflows: test.yml (lint + test on push/PR) and
  release.yml (build + NSIS installer + upload on v* tags)
- Add NSIS installer with optional desktop shortcut and auto-start
- Add esbuild bundler: ES module migration with IIFE bundle output
- Add build-dist-windows.sh for cross-building Windows distribution
- Fix all ruff lint errors (import sorting, unused imports, line length)
- Remove redundant scripts (start-server.bat, stop-server.bat,
  start-server-background.vbs)
- Update CLAUDE.md with CI/CD and release documentation

media_server/static/js/scripts.js

@@ -2,9 +2,16 @@
 // Scripts: CRUD, quick access, execution dialog
 // ============================================================
 
-let scriptFormDirty = false;
+import {
+    t, showToast, escapeHtml, closeDialog, showConfirm,
+    resolveMdiIcons, fetchMdiIcon,
+    scripts, setScripts,
+} from './core.js';
 
-async function loadScripts() {
+export let scriptFormDirty = false;
+export function setScriptFormDirty(value) { scriptFormDirty = value; }
+
+export async function loadScripts() {
     const token = localStorage.getItem('media_server_token');
 
     try {
@@ -15,7 +22,7 @@ async function loadScripts() {
         });
 
         if (response.ok) {
-            scripts = await response.json();
+            setScripts(await response.json());
             displayQuickAccess();
         }
     } catch (error) {
@@ -24,7 +31,7 @@ async function loadScripts() {
 }
 
 let _quickAccessGen = 0;
-async function displayQuickAccess() {
+export async function displayQuickAccess() {
     const gen = ++_quickAccessGen;
     const grid = document.getElementById('scripts-grid');
 
@@ -150,7 +157,7 @@ async function executeScript(scriptName, buttonElement) {
 // ============================================================
 
 let _loadScriptsPromise = null;
-async function loadScriptsTable() {
+export async function loadScriptsTable() {
     if (_loadScriptsPromise) return _loadScriptsPromise;
     _loadScriptsPromise = _loadScriptsTableImpl();
     _loadScriptsPromise.finally(() => { _loadScriptsPromise = null; });
@@ -206,7 +213,7 @@ async function _loadScriptsTableImpl() {
     }
 }
 
-function showAddScriptDialog() {
+export function showAddScriptDialog() {
     const dialog = document.getElementById('scriptDialog');
     const form = document.getElementById('scriptForm');
     const title = document.getElementById('dialogTitle');
@@ -224,7 +231,7 @@ function showAddScriptDialog() {
     dialog.showModal();
 }
 
-async function showEditScriptDialog(scriptName) {
+export async function showEditScriptDialog(scriptName) {
     const token = localStorage.getItem('media_server_token');
     const dialog = document.getElementById('scriptDialog');
     const title = document.getElementById('dialogTitle');
@@ -274,7 +281,7 @@ async function showEditScriptDialog(scriptName) {
     }
 }
 
-async function closeScriptDialog() {
+export async function closeScriptDialog() {
     if (scriptFormDirty) {
         if (!await showConfirm(t('scripts.confirm.unsaved'))) {
             return;
@@ -287,7 +294,7 @@ async function closeScriptDialog() {
     document.body.classList.remove('dialog-open');
 }
 
-async function saveScript(event) {
+export async function saveScript(event) {
     event.preventDefault();
 
     const submitBtn = event.target.querySelector('button[type="submit"]');
@@ -341,7 +348,7 @@ async function saveScript(event) {
     }
 }
 
-async function deleteScriptConfirm(scriptName) {
+export async function deleteScriptConfirm(scriptName) {
     if (!await showConfirm(t('scripts.confirm.delete').replace('{name}', scriptName))) {
         return;
     }
@@ -373,7 +380,7 @@ async function deleteScriptConfirm(scriptName) {
 // Execution Result Dialog (shared by scripts and callbacks)
 // ============================================================
 
-function closeExecutionDialog() {
+export function closeExecutionDialog() {
     const dialog = document.getElementById('executionDialog');
     closeDialog(dialog);
     document.body.classList.remove('dialog-open');
@@ -435,7 +442,7 @@ function showExecutionResult(name, result, type = 'script') {
     dialog.showModal();
 }
 
-async function executeScriptDebug(scriptName) {
+export async function executeScriptDebug(scriptName) {
     const token = localStorage.getItem('media_server_token');
     const dialog = document.getElementById('executionDialog');
     const title = document.getElementById('executionDialogTitle');
@@ -486,7 +493,7 @@ async function executeScriptDebug(scriptName) {
     }
 }
 
-async function executeCallbackDebug(callbackName) {
+export async function executeCallbackDebug(callbackName) {
     const token = localStorage.getItem('media_server_token');
     const dialog = document.getElementById('executionDialog');
     const title = document.getElementById('executionDialogTitle');