refactor: simplify respawn controller display and improve CLAUDE.md

Respawn banner changes:
- Human-friendly state labels (e.g., "Kickstarting..." vs "waiting_kickstart")
- Removed redundant "→ waiting for" text
- Simplified AI check display (only shows when actively checking)
- Shorter cycle counter (#1 vs "Cycle 1")
- Fixed NaN timer bug with validation
- Flatter HTML structure

CLAUDE.md improvements:
- Reorganized Commands section into clear subsections
- Test port allocation in table format
- Simplified TypeScript config section
- Removed duplicate keyboard shortcuts (already in README)

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

src/web/public/styles.css

@@ -568,20 +568,16 @@ body {
 .respawn-state {
   color: var(--green);
   font-weight: 500;
-  text-transform: capitalize;
+}
+
+.respawn-spacer {
+  flex: 1;
 }
 
 .respawn-cycles {
-  color: var(--text-dim);
-}
-
-.respawn-step {
-  flex: 1;
   color: var(--text-muted);
-  font-family: monospace;
-  overflow: hidden;
-  text-overflow: ellipsis;
-  white-space: nowrap;
+  font-family: 'SF Mono', Monaco, monospace;
+  font-size: 0.7rem;
 }
 
 .respawn-timer {
@@ -599,23 +595,14 @@ body {
   font-size: 0.7rem;
 }
 
-.respawn-detection {
-  display: flex;
-  align-items: center;
-  gap: 0.5rem;
-  padding: 0 0.5rem;
-  border-left: 1px solid rgba(34, 197, 94, 0.2);
-}
-
 .detection-status {
   color: var(--text-muted);
   font-size: 0.7rem;
 }
 
-.detection-waiting {
+.detection-ai-check {
   color: var(--accent);
   font-size: 0.7rem;
-  font-style: italic;
 }
 
 .detection-confidence {