feat: Update card skills, mission rosters, and enhance DeckBuilder UI

- **Data Updates**:
  - `cards.json`: Changed a skill from `rally` (preBattle) to `strike` (preAttack) with global effect.
  - `missions.json`: Swapped opponent cards in the raider mission roster (`raider_berserker_1` -> `raider_grunt_1`, `raider_reaver_1` -> `raider_scout_1`).

- **DeckBuilderScene.js Enhancements**:
  - **Visual Feedback**: Distinguishes between "unavailable" (greyed out) and "deck full" states. Cards remain visible when the deck is full, but the Add button turns red.
  - **Fusion Lab Integration**: Adds a pulsing "Fusion Available" overlay on assault cards where the player has 3+ spare copies, linking directly to the `FusionScene`.
  - **Button States**: Refined Add button logic to display specific messages for available, deck-full, and unavailable states with corresponding colors.

data/cards.json

@@ -1380,9 +1380,10 @@
         "delay": 2,
         "skills": [
           {
-            "name": "rally",
+            "name": "strike",
-            "value": 3,
+            "all": true,
-            "trigger": "preBattle"
+            "value": 2,
+            "trigger": "preAttack"
           }
         ]
       },

data/missions.json

@@ -119,12 +119,12 @@
     "opponent": {
       "commander": "raider_cmd_1",
       "cards": [
-        "raider_berserker_1",
+        "raider_grunt_1",
         "raider_berserker_1",
         "raider_cutthroat_1",
         "raider_warlord_1",
         "raider_marauder_1",
-        "raider_reaver_1"
+        "raider_scout_1"
       ]
     },
     "rewards": {

src/scenes/DeckBuilderScene.js

@@ -185,26 +185,94 @@ export class DeckBuilderScene extends Phaser.Scene {
     const remaining = Math.max(0, owned - used);
     const canAdd = this._canAdd(card);
 
+    // Deck-full block: assault card has available copies but the deck is at capacity.
+    // The card stays fully visible; only the button turns red.
+    const deckFull = card.type === 'assault' && this.workingDeck.cards.length >= 10;
+    const deckFullBlocked = deckFull && owned > 0 && remaining > 0;
+
     // Card instance for display
     const inst = this.cardManager.createInstance(card.id);
     const cardObj = new CardObject(this, cx, cy, inst, { width: this.CARD_W, height: this.CARD_H });
-    if (!canAdd) cardObj.setAlpha(0.4);
+    // Only dim cards that are genuinely unavailable (not owned / no copies left).
+    // When the deck is merely full, keep cards at full alpha so the player can browse.
+    if (!canAdd && !deckFullBlocked) cardObj.setAlpha(0.4);
     this.scrollContainer.add(cardObj);
 
+    // ── Fusion available overlay ──────────────────────────────────────────────
+    // Show when the player has 3+ spare copies of a fusible card (assault, non-legendary).
+    if (card.type === 'assault' && card.rarity !== 'legendary' && remaining >= 3) {
+      // Sits over the art area (~upper-centre of the card)
+      const ovY = cy - Math.round(this.CARD_H * 0.18);
+      const ovW = this.CARD_W - 8;
+      const ovH = 46;
+
+      const ovBg = this.add.rectangle(cx, ovY, ovW, ovH, 0x0d0022, 0.92)
+        .setStrokeStyle(1, 0xaa44ff)
+        .setInteractive({ useHandCursor: true });
+
+      const ovIcon = this.add.text(cx, ovY - 9, '⚗  FUSION AVAILABLE', {
+        fontSize: '11px', color: '#cc88ff', fontStyle: 'bold', fontFamily: 'Audiowide'
+      }).setOrigin(0.5);
+
+      const ovSub = this.add.text(cx, ovY + 9, 'Click to open Fusion Lab →', {
+        fontSize: '10px', color: '#7744aa', fontFamily: 'Audiowide'
+      }).setOrigin(0.5);
+
+      // Hover tint
+      ovBg.on('pointerover', () => {
+        ovBg.setFillStyle(0x220044);
+        ovBg.setStrokeStyle(2, 0xdd88ff);
+        ovIcon.setColor('#ee99ff');
+      });
+      ovBg.on('pointerout', () => {
+        ovBg.setFillStyle(0x0d0022);
+        ovBg.setStrokeStyle(1, 0xaa44ff);
+        ovIcon.setColor('#cc88ff');
+      });
+      ovBg.on('pointerdown', () => this.scene.start('FusionScene'));
+
+      // Pulsing glow
+      this.tweens.add({
+        targets: [ovBg, ovIcon, ovSub],
+        alpha: { from: 0.75, to: 1 },
+        duration: 1100,
+        yoyo: true,
+        repeat: -1,
+        ease: 'Sine.easeInOut'
+      });
+
+      this.scrollContainer.add([ovBg, ovIcon, ovSub]);
+    }
+
     // Owned/used count
     const countY = cy + this.CARD_H / 2 + 4;
+    const countColor = canAdd ? '#88cc88' : deckFullBlocked ? '#aaaaaa' : '#555555';
     const countText = this.add.text(cx, countY, `Owned: ${owned}  |  In Deck: ${used}`, {
-      fontSize: '11px', color: canAdd ? '#88cc88' : '#555555', fontFamily: 'Audiowide'
+      fontSize: '11px', color: countColor, fontFamily: 'Audiowide'
     }).setOrigin(0.5, 0);
     this.scrollContainer.add(countText);
 
-    // +ADD button with remaining count
+    // +ADD button — three visual states:
+    //   green  = can add (deck has room, copies available)
+    //   red    = copies available but deck is full
+    //   grey   = no copies available or not owned
     const btnY = countY + 16;
-    const btnLabel = canAdd ? `+ ADD  (remain: ${remaining})` : '+ ADD';
+    let btnBgColor, btnStroke, btnTextColor, btnLabel;
-    const btnBg = this.add.rectangle(cx, btnY, this.CARD_W - 10, this.BTN_H, canAdd ? 0x225522 : 0x222222)
+    if (canAdd) {
-      .setStrokeStyle(1, canAdd ? 0x44aa44 : 0x333333);
+      btnBgColor = 0x225522; btnStroke = 0x44aa44; btnTextColor = '#44ff44';
+      btnLabel = `+ ADD  (remain: ${remaining})`;
+    } else if (deckFullBlocked) {
+      btnBgColor = 0x552222; btnStroke = 0xaa4444; btnTextColor = '#ff4444';
+      btnLabel = `DECK FULL  (${remaining} avail)`;
+    } else {
+      btnBgColor = 0x222222; btnStroke = 0x333333; btnTextColor = '#444444';
+      btnLabel = '+ ADD';
+    }
+
+    const btnBg = this.add.rectangle(cx, btnY, this.CARD_W - 10, this.BTN_H, btnBgColor)
+      .setStrokeStyle(1, btnStroke);
     const btnTxt = this.add.text(cx, btnY, btnLabel, {
-      fontSize: '12px', color: canAdd ? '#44ff44' : '#444444', fontFamily: 'Audiowide'
+      fontSize: '12px', color: btnTextColor, fontFamily: 'Audiowide'
     }).setOrigin(0.5);
     this.scrollContainer.add(btnBg);
     this.scrollContainer.add(btnTxt);