Fix italic-text contrast, response truncation, and tab label color

- #insights-output em/i inherited Gradio's dim default the same way
b/strong did before; force it to --ice.
- max_tokens=1400 was cutting off the last section (usually STUDY
PROMPT) on longer responses; raised to 2400.
- [role="tab"] labels (Graph/Swarm/AI Insights) had no explicit
color at all, so inactive tabs used Gradio's own muted default;
now driven by --fog/--cyan via aria-selected.

app.py

@@ -607,7 +607,7 @@ def generate_insights(notes, graph_state, algo_state, swarm_state):
     try:
         with client.messages.stream(
             model="claude-opus-4-8",
-            max_tokens=1400,
+            max_tokens=2400,
             messages=[{"role": "user", "content": prompt}],
         ) as stream:
             for text in stream.text_stream:
@@ -889,6 +889,11 @@ gradio-app, .gradio-container, body {
   box-shadow: none !important;
 }
 .gradio-container label span, .gradio-container .label-wrap span { color: var(--fog) !important; }
+.gradio-container [role="tab"] {
+  color: var(--fog) !important; font-family: var(--font-mono) !important;
+  text-transform: uppercase; letter-spacing: 0.05em; font-size: 12px !important;
+}
+.gradio-container [role="tab"][aria-selected="true"] { color: var(--cyan) !important; }
 
 #skg-header {
   display: flex; align-items: center; justify-content: space-between;
@@ -1037,6 +1042,7 @@ gradio-app, .gradio-container, body {
   color: var(--ice) !important;
 }
 #insights-output strong, #insights-output b { color: var(--cyan) !important; }
+#insights-output em, #insights-output i { color: var(--ice) !important; opacity: 0.92; font-style: italic; }
 #insights-output h2 {
   font-family: var(--font-head) !important; font-size: 12px !important; letter-spacing: 0.07em;
   text-transform: uppercase; color: var(--plasma) !important; border-bottom: 1px solid var(--border);