Implement workspace-aware folder browser

packages/ui/src/styles/components/directory-browser.css

@@ -0,0 +1,166 @@
+.directory-browser-modal {
+  width: min(960px, 90vw);
+  height: min(85vh, 900px);
+  max-height: 90vh;
+  border-radius: var(--radius-xl);
+}
+
+.directory-browser-panel {
+  display: flex;
+  flex-direction: column;
+  height: 100%;
+}
+
+.directory-browser-header {
+  display: flex;
+  align-items: flex-start;
+  justify-content: space-between;
+  gap: var(--space-xl);
+  padding: 1.5rem;
+  border-bottom: 1px solid var(--border-base);
+  background-color: var(--surface-secondary);
+}
+
+.directory-browser-heading {
+  display: flex;
+  flex-direction: column;
+  gap: var(--space-sm);
+}
+
+.directory-browser-title {
+  font-size: var(--font-size-2xl);
+  line-height: var(--line-height-tight);
+  font-weight: var(--font-weight-semibold);
+  color: var(--text-primary);
+}
+
+.directory-browser-description {
+  font-size: var(--font-size-xl);
+  line-height: var(--line-height-relaxed);
+  color: var(--text-secondary);
+}
+
+.directory-browser-body {
+  flex: 1;
+  min-height: 0;
+  padding: 1.5rem;
+  display: flex;
+  flex-direction: column;
+  gap: var(--space-lg);
+  background-color: var(--surface-base);
+}
+
+.directory-browser-current {
+  display: flex;
+  align-items: center;
+  justify-content: space-between;
+  gap: var(--space-md);
+  width: 100%;
+}
+
+.directory-browser-current-meta {
+  display: flex;
+  flex-direction: column;
+  gap: var(--space-2xs);
+}
+
+.directory-browser-current-label {
+  font-size: var(--font-size-sm);
+  text-transform: uppercase;
+  letter-spacing: 0.04em;
+  color: var(--text-secondary);
+}
+
+.directory-browser-current-path {
+  font-family: var(--font-family-mono);
+  font-size: var(--font-size-base);
+  color: var(--text-primary);
+}
+
+.directory-browser-current-select {
+  width: auto;
+}
+
+.directory-browser-close {
+
+  display: inline-flex;
+  align-items: center;
+  justify-content: center;
+  width: 40px;
+  height: 40px;
+  border-radius: var(--radius-full);
+  border: 1px solid var(--border-base);
+  background-color: var(--surface-base);
+  color: var(--text-primary);
+  transition: background-color 0.15s ease;
+}
+
+.directory-browser-close:hover {
+  background-color: var(--surface-hover);
+}
+
+.directory-browser-list {
+
+  flex: 1;
+  min-height: 0;
+}
+
+.directory-browser-row {
+  display: flex;
+  align-items: center;
+  gap: var(--space-md);
+}
+
+.directory-browser-row-main {
+  flex: 1;
+  display: flex;
+  align-items: center;
+  gap: var(--space-md);
+  text-align: left;
+  background: transparent;
+  border: none;
+  color: var(--text-primary);
+  padding: 0;
+  cursor: pointer;
+}
+
+.directory-browser-row-icon {
+  width: 36px;
+  height: 36px;
+  border-radius: var(--radius-lg);
+  background-color: var(--surface-secondary);
+  display: inline-flex;
+  align-items: center;
+  justify-content: center;
+  color: var(--text-muted);
+}
+
+.directory-browser-row-name {
+  font-size: var(--font-size-lg);
+  font-weight: var(--font-weight-medium);
+}
+
+.directory-browser-row-spinner {
+  width: 18px;
+  height: 18px;
+  color: var(--text-muted);
+}
+
+.directory-browser-select {
+  width: auto;
+  min-width: 90px;
+}
+
+
+.directory-browser-select:hover {
+  background-color: var(--selection-highlight-bg);
+  border-color: var(--accent-primary);
+  color: var(--accent-primary);
+}
+
+.directory-browser-loading {
+  display: inline-flex;
+  align-items: center;
+  gap: var(--space-sm);
+  color: var(--text-secondary);
+}

packages/ui/src/styles/components/selector.css

@@ -224,12 +224,15 @@
 }
 
 .selector-button-secondary {
-  background-color: var(--surface-secondary);
+  background-color: var(--surface-base);
   color: var(--text-primary);
+  border-color: var(--border-base);
 }
 
 .selector-button-secondary:hover:not(:disabled) {
-  background-color: var(--surface-hover);
+  background-color: var(--surface-secondary);
+  border-color: var(--border-base);
+  color: var(--text-primary);
 }
 
 .selector-button-secondary:disabled {

packages/ui/src/styles/controls.css

@@ -4,3 +4,4 @@
 @import "./components/dropdown.css";
 @import "./components/selector.css";
 @import "./components/env-vars.css";
+@import "./components/directory-browser.css";