Add cross-report comparison and fix delta/filter bugs

- Cross-report comparison: toggle panel to load fights from a second
  report code, select a fight to use as reference (mutually exclusive
  with same-report ref dropdown)
- Fix ref-row player filter: use hiddenPlayerNames (name-based) so
  ext-report targets with different actor IDs are correctly hidden
- Fix negative delta formatting: pass Math.abs(diff) to fmtDmg so
  negative values are abbreviated the same way as positive ones

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

css/analysis.css

@@ -65,6 +65,27 @@
   margin-left: auto;
 }
 
+/* ── External report panel ───────────────────────────────────────────────── */
+.ref-ext-row {
+  margin-top: 10px;
+  display:    flex;
+  flex-direction: column;
+  gap:        8px;
+}
+
+#ref-ext-panel {
+  display:     flex;
+  flex-wrap:   wrap;
+  align-items: center;
+  gap:         8px;
+}
+
+.ref-report-input {
+  width:     200px;
+  padding:   4px 9px;
+  font-size: 12px;
+}
+
 /* ── AoE Timeline ────────────────────────────────────────────────────────── */
 .aoe-event {
   display:               grid;

js/analysis.js

@@ -56,12 +56,15 @@
     }
 
     let hiddenPlayers      = new Set();
+    let hiddenPlayerNames  = new Set();
     let lastEvents     = [];
     let lastFightStart = 0;
     let playerFilter   = '';
     let phaseFilter    = { startTime: 0, endTime: Infinity };
     let refEvents      = [];
     let refFightStart  = 0;
+    let extFights      = [];
+    let extReportCode  = '';
 
     // ── Player grid ──────────────────────────────────────────────────────────
 
@@ -74,9 +77,10 @@
         });
 
         hiddenPlayers     = new Set(players.filter(p => p.role === 'tank').map(p => p.id));
+        hiddenPlayerNames = new Set(players.filter(p => p.role === 'tank').map(p => p.name));
 
         grid.innerHTML = players.map(p => `
-            <div class="player-card ${hiddenPlayers.has(p.id) ? 'player-hidden' : ''}" data-player-id="${p.id}">
+            <div class="player-card ${hiddenPlayers.has(p.id) ? 'player-hidden' : ''}" data-player-id="${p.id}" data-player-name="${p.name}">
                 <div class="player-job-icon role-${p.role}">${abbr(p.type)}</div>
                 <div>
                     <div class="player-name">${p.name}</div>
@@ -90,11 +94,14 @@
         const card = e.target.closest('.player-card');
         if (!card) return;
         const id   = parseInt(card.dataset.playerId, 10);
+        const name = card.dataset.playerName;
         if (hiddenPlayers.has(id)) {
             hiddenPlayers.delete(id);
+            hiddenPlayerNames.delete(name);
             card.classList.remove('player-hidden');
         } else {
             hiddenPlayers.add(id);
+            hiddenPlayerNames.add(name);
             card.classList.add('player-hidden');
         }
         renderTimeline(lastEvents, lastFightStart);
@@ -147,6 +154,9 @@
         const fight = (window.App?.fights ?? []).find(f => f.id === refId);
         if (!fight) return;
 
+        // Clear ext-report selection
+        refExtFightSelect.value = '';
+
         refFightSelect.disabled = true;
         try {
             const res  = await fetch('api/analysis.php', {
@@ -181,6 +191,91 @@
         refFightSelect.style.display = '';
     }
 
+    // ── External report comparison ────────────────────────────────────────────
+
+    const refExtToggle      = document.getElementById('ref-ext-toggle');
+    const refExtPanel       = document.getElementById('ref-ext-panel');
+    const refReportInput    = document.getElementById('ref-report-input');
+    const refReportLoad     = document.getElementById('ref-report-load');
+    const refExtFightSelect = document.getElementById('ref-ext-fight-select');
+
+    refExtToggle.addEventListener('click', () => {
+        const hidden = refExtPanel.style.display === 'none';
+        refExtPanel.style.display = hidden ? '' : 'none';
+    });
+
+    refReportLoad.addEventListener('click', async () => {
+        const code = refReportInput.value.trim();
+        if (!code) return;
+
+        refReportLoad.disabled    = true;
+        refReportLoad.textContent = 'Lädt…';
+
+        try {
+            const res  = await fetch('api/fight.php', {
+                method:  'POST',
+                headers: { 'Content-Type': 'application/x-www-form-urlencoded' },
+                body:    new URLSearchParams({ report_code: code }),
+            });
+            const json = await res.json();
+            if (json.reauth) { window.location.href = 'auth/start.php'; return; }
+
+            const fights = json?.data?.reportData?.report?.fights ?? [];
+            extFights      = fights;
+            extReportCode  = code;
+
+            refExtFightSelect.innerHTML = '<option value="">— Fight auswählen —</option>';
+            fights.forEach(f => {
+                const hp  = f.kill ? 'Kill' : (f.fightPercentage != null ? f.fightPercentage.toFixed(2) + '%' : '?');
+                const opt = document.createElement('option');
+                opt.value       = f.id;
+                opt.textContent = `${f.name} — ${fmtDur(f.endTime - f.startTime)} — ${hp}`;
+                refExtFightSelect.appendChild(opt);
+            });
+            refExtFightSelect.style.display = fights.length ? '' : 'none';
+        } catch { }
+
+        refReportLoad.disabled    = false;
+        refReportLoad.textContent = 'Laden';
+    });
+
+    refExtFightSelect.addEventListener('change', async () => {
+        const refId = parseInt(refExtFightSelect.value, 10);
+        if (!refId) {
+            refEvents     = [];
+            refFightStart = 0;
+            renderTimeline(lastEvents, lastFightStart);
+            return;
+        }
+
+        const fight = extFights.find(f => f.id === refId);
+        if (!fight) return;
+
+        // Clear same-report selection
+        refFightSelect.value = '';
+
+        refExtFightSelect.disabled = true;
+        try {
+            const res  = await fetch('api/analysis.php', {
+                method:  'POST',
+                headers: { 'Content-Type': 'application/x-www-form-urlencoded' },
+                body:    new URLSearchParams({
+                    report_code: extReportCode,
+                    fight_id:    refId,
+                    start_time:  fight.startTime,
+                    end_time:    fight.endTime,
+                }),
+            });
+            const json = await res.json();
+            if (!json.error && !json.reauth) {
+                refEvents     = json.aoe_events ?? [];
+                refFightStart = json.fight_start ?? fight.startTime;
+            }
+        } catch { }
+        refExtFightSelect.disabled = false;
+        renderTimeline(lastEvents, lastFightStart);
+    });
+
     // ── Timeline rendering ────────────────────────────────────────────────────
 
     function renderTimeline(events, fightStart) {
@@ -271,7 +366,7 @@
             let refHtml = '';
             if (refEv) {
                 const refVisible = refEv.targets.filter(t =>
-                    !hiddenPlayers.has(t.id) &&
+                    !hiddenPlayerNames.has(t.name) &&
                     (!playerFilter || t.name.toLowerCase().includes(playerFilter))
                 );
                 if (refVisible.length) {
@@ -284,7 +379,7 @@
                         const dead = t.hp === 0 && t.maxHp > 0;
 
                         const deltaHtml = diff !== 0
-                            ? `<span class="${diff > 0 ? 'aoe-delta-worse' : 'aoe-delta-better'}">${diff > 0 ? '+' : ''}${fmtDmg(diff)}</span>`
+                            ? `<span class="${diff > 0 ? 'aoe-delta-worse' : 'aoe-delta-better'}">${diff > 0 ? '+' : '-'}${fmtDmg(Math.abs(diff))}</span>`
                             : '';
 
                         const refMitigIcons = (t.mitigations ?? []).map(m => {
@@ -390,8 +485,13 @@
             lastFightId   = null;
             refEvents     = [];
             refFightStart = 0;
+            extFights     = [];
+            extReportCode = '';
             refFightSelect.value        = '';
             refFightSelect.style.display = 'none';
+            refExtFightSelect.value        = '';
+            refExtFightSelect.style.display = 'none';
+            refExtPanel.style.display = 'none';
         },
     };
 })();

templates/tab-analysis.php

@@ -18,6 +18,16 @@
       </select>
     </div>
     <div id="player-grid" class="player-grid"></div>
+    <div class="ref-ext-row">
+      <button id="ref-ext-toggle" class="btn btn-sm">+ Anderer Report</button>
+      <div id="ref-ext-panel" style="display:none">
+        <input type="text" id="ref-report-input" class="ref-report-input" placeholder="Report-Code">
+        <button id="ref-report-load" class="btn btn-sm">Laden</button>
+        <select id="ref-ext-fight-select" class="filter-input" style="display:none">
+          <option value="">— Fight auswählen —</option>
+        </select>
+      </div>
+    </div>
   </div>
 
   <div class="card">