ui: improve respawn controller layout and filter action log noise

- Stack timers row vertically (timers on top, action log below)
- Reduce action log height to 60px since it's now full width
- Filter action log to show only important entries:
  - Commands sent to console
  - Plan-check with action taken
  - Step completions
- Skip timer starts/cancels, detection updates, ai-check status

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

src/web/public/styles.css

@@ -470,8 +470,8 @@ body {
 
 .respawn-timers-row {
   display: flex;
-  align-items: flex-start;
-  gap: 1rem;
+  flex-direction: column;
+  gap: 0.35rem;
   padding-top: 0.35rem;
   border-top: 1px solid rgba(34, 197, 94, 0.15);
   margin-top: 0.35rem;
@@ -479,7 +479,7 @@ body {
 
 .respawn-countdown-timers {
   display: flex;
-  gap: 0.5rem;
+  gap: 0.4rem;
   flex-wrap: wrap;
 }
 
@@ -520,8 +520,8 @@ body {
 }
 
 .respawn-action-log {
-  flex: 1;
-  max-height: 100px;
+  width: 100%;
+  max-height: 60px;
   overflow-y: auto;
   font-size: 0.7rem;
   opacity: 0.9;