release(v2.1.0): add header zoom controls, preview tags & modal/dock polish

public/js/zoom.js

@@ -0,0 +1,92 @@
+// /js/zoom.js
+(function () {
+    const MIN_PERCENT  = 60;   // 60%
+    const MAX_PERCENT  = 140;  // 140%
+    const STEP_PERCENT = 5;    // 5%
+    const STORAGE_KEY  = 'filerise.appZoomPercent';
+  
+    function clampPercent(p) {
+      return Math.max(MIN_PERCENT, Math.min(MAX_PERCENT, p));
+    }
+  
+    function updateDisplay(p) {
+      const el = document.getElementById('zoomDisplay');
+      if (el) el.textContent = `${p}%`;
+    }
+  
+    function applyZoomPercent(p) {
+      const clamped = clampPercent(p);
+      const scale   = clamped / 100;
+  
+      document.documentElement.style.setProperty('--app-zoom', String(scale));
+      try { localStorage.setItem(STORAGE_KEY, String(clamped)); } catch {}
+  
+      updateDisplay(clamped);
+      return clamped;
+    }
+  
+    function getCurrentPercent() {
+      try {
+        const raw = localStorage.getItem(STORAGE_KEY);
+        if (raw) {
+          const n = parseInt(raw, 10);
+          if (Number.isFinite(n) && n > 0) return clampPercent(n);
+        }
+      } catch {}
+  
+      const v = getComputedStyle(document.documentElement)
+        .getPropertyValue('--app-zoom')
+        .trim();
+      const n = parseFloat(v);
+      if (Number.isFinite(n) && n > 0) {
+        return clampPercent(Math.round(n * 100));
+      }
+      return 100;
+    }
+  
+    // Public-ish API (percent-based)
+    window.fileriseZoom = {
+      in() {
+        const next = getCurrentPercent() + STEP_PERCENT;
+        return applyZoomPercent(next);
+      },
+      out() {
+        const next = getCurrentPercent() - STEP_PERCENT;
+        return applyZoomPercent(next);
+      },
+      reset() {
+        return applyZoomPercent(100);
+      },
+      setPercent(p) {
+        return applyZoomPercent(p);
+      },
+      currentPercent: getCurrentPercent
+    };
+  
+    function initZoomUI() {
+      // bind buttons
+      const btns = document.querySelectorAll('.zoom-btn[data-zoom]');
+      btns.forEach(btn => {
+        if (btn.__zoomBound) return;
+        btn.__zoomBound = true;
+  
+        btn.addEventListener('click', () => {
+          const mode = btn.dataset.zoom;
+          if (mode === 'in')      window.fileriseZoom.in();
+          else if (mode === 'out')   window.fileriseZoom.out();
+          else if (mode === 'reset') window.fileriseZoom.reset();
+        });
+      });
+  
+      // apply initial zoom + update display
+      const initial = getCurrentPercent();
+      applyZoomPercent(initial);
+    }
+  
+    // Run immediately if DOM is ready, otherwise wait
+    if (document.readyState === 'loading') {
+      document.addEventListener('DOMContentLoaded', initZoomUI, { once: true });
+    } else {
+      initZoomUI();
+    }
+  })();