refactor: UI consistency — shared CSS, design system colors, no inline styles

Phase 1: Extract 6 shared CSS modules (table-section, log-panel,
rate-colors, refresh-indicator, chart-card, section-card) eliminating
~135 duplicate class definitions across 11 files.

Phase 2: Replace all hardcoded hex colors in CSS modules with design
system variables. Strip ~55 hex fallbacks from var() patterns. Fix 4
undefined variable names (--accent, --bg-base, --surface, --bg-surface-raised).

Phase 3: Replace ~45 hardcoded hex values in ProcessDiagram SVG
components with var() CSS custom properties. Fix Dashboard.tsx color prop.

Phase 4: Create CSS modules for AdminLayout, DatabaseAdminPage,
OidcCallback (previously 100% inline). Extract shared PageLoader
component (replaces 3 copy-pasted spinner patterns). Move AppsTab
static inline styles to CSS classes. Extract LayoutShell StarredList styles.

58 files changed, net -219 lines.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

ui/src/styles/log-panel.module.css

@@ -0,0 +1,112 @@
+.logCard {
+  background: var(--bg-surface);
+  border: 1px solid var(--border-subtle);
+  border-radius: var(--radius-lg);
+  box-shadow: var(--shadow-card);
+  overflow: hidden;
+  display: flex;
+  flex-direction: column;
+  max-height: 420px;
+}
+
+.logHeader {
+  display: flex;
+  align-items: center;
+  justify-content: space-between;
+  padding: 12px 16px;
+  border-bottom: 1px solid var(--border-subtle);
+}
+
+.logToolbar {
+  display: flex;
+  align-items: center;
+  gap: 8px;
+  padding: 8px 12px;
+  border-bottom: 1px solid var(--border-subtle);
+  background: var(--bg-surface);
+}
+
+.logSearchWrap {
+  position: relative;
+  flex: 1;
+  min-width: 0;
+}
+
+.logSearchInput {
+  width: 100%;
+  padding: 5px 28px 5px 10px;
+  border: 1px solid var(--border-subtle);
+  border-radius: var(--radius-sm);
+  background: var(--bg-body);
+  color: var(--text-primary);
+  font-size: 12px;
+  font-family: var(--font-body);
+  outline: none;
+}
+
+.logSearchInput:focus {
+  border-color: var(--amber);
+}
+
+.logSearchInput::placeholder {
+  color: var(--text-faint);
+}
+
+.logSearchClear {
+  position: absolute;
+  right: 4px;
+  top: 50%;
+  transform: translateY(-50%);
+  background: none;
+  border: none;
+  color: var(--text-muted);
+  cursor: pointer;
+  font-size: 14px;
+  padding: 0 4px;
+  line-height: 1;
+}
+
+.logClearFilters {
+  background: none;
+  border: none;
+  color: var(--text-muted);
+  font-size: 12px;
+  cursor: pointer;
+  padding: 2px 6px;
+  white-space: nowrap;
+}
+
+.logClearFilters:hover {
+  color: var(--text-primary);
+}
+
+.logEmpty {
+  padding: 24px;
+  text-align: center;
+  color: var(--text-faint);
+  font-size: 12px;
+}
+
+.sortBtn,
+.refreshBtn {
+  background: none;
+  border: 1px solid var(--border-subtle);
+  border-radius: var(--radius-sm);
+  color: var(--text-muted);
+  cursor: pointer;
+  font-size: 13px;
+  padding: 2px 6px;
+  line-height: 1;
+}
+
+.sortBtn:hover,
+.refreshBtn:hover {
+  color: var(--text-primary);
+  border-color: var(--amber);
+}
+
+.headerActions {
+  display: flex;
+  align-items: center;
+  gap: 6px;
+}