fix: improve AI chat table rendering with CSS styling and narrow-panel formatting

- Add SCSS for AI chat tables: borders, padding, zebra striping, hover, dark mode
- Style headings, code, bold text, and lists in chat messages
- Update system prompt: enforce 3-column max tables for narrow chat panel
- Use key-value (2-column) tables for summaries, split wide data into sections
- Provide explicit correct/wrong format examples in prompt

fusion_claims/static/src/scss/fusion_claims.scss

@@ -928,3 +928,99 @@ html.dark, .o_dark {
 }
 
 
+
+// ========================================================================
+// AI CHAT: Table and response styling for Fusion Claims Intelligence
+// ========================================================================
+.o-mail-Message-body,
+.o-mail-Message-textContent,
+.o_mail_body_content {
+    table {
+        width: 100%;
+        border-collapse: collapse;
+        margin: 8px 0;
+        font-size: 12px;
+        line-height: 1.4;
+
+        th, td {
+            border: 1px solid rgba(150, 150, 150, 0.4);
+            padding: 5px 8px;
+            text-align: left;
+            vertical-align: top;
+        }
+
+        th {
+            background-color: rgba(100, 100, 100, 0.15);
+            font-weight: 600;
+            font-size: 11px;
+            text-transform: uppercase;
+            letter-spacing: 0.3px;
+            white-space: nowrap;
+        }
+
+        td {
+            white-space: nowrap;
+        }
+
+        tr:nth-child(even) td {
+            background-color: rgba(100, 100, 100, 0.05);
+        }
+
+        tr:hover td {
+            background-color: rgba(100, 100, 100, 0.1);
+        }
+    }
+
+    h3 {
+        font-size: 14px;
+        font-weight: 700;
+        margin: 12px 0 6px 0;
+        padding-bottom: 4px;
+        border-bottom: 1px solid rgba(150, 150, 150, 0.3);
+    }
+
+    h4 {
+        font-size: 13px;
+        font-weight: 600;
+        margin: 10px 0 4px 0;
+    }
+
+    strong {
+        font-weight: 600;
+    }
+
+    code {
+        background-color: rgba(100, 100, 100, 0.1);
+        padding: 1px 4px;
+        border-radius: 3px;
+        font-size: 11px;
+    }
+
+    ul, ol {
+        margin: 4px 0;
+        padding-left: 20px;
+    }
+
+    li {
+        margin-bottom: 2px;
+    }
+}
+
+html.dark .o-mail-Message-body,
+html.dark .o-mail-Message-textContent,
+html.dark .o_mail_body_content,
+.o_dark .o-mail-Message-body,
+.o_dark .o-mail-Message-textContent,
+.o_dark .o_mail_body_content {
+    table {
+        th, td {
+            border-color: rgba(200, 200, 200, 0.2);
+        }
+        th {
+            background-color: rgba(200, 200, 200, 0.1);
+        }
+        tr:nth-child(even) td {
+            background-color: rgba(200, 200, 200, 0.04);
+        }
+    }
+}