revert(app): "STUPID SEXY TIMELINE (#16420)" (#16745)

1 files changed, 11 insertions, 116 deletions

diff --git a/packages/ui/src/components/session-turn.css b/packages/ui/src/components/session-turn.css
index 56e060633..eea9a13e4 100644
--- a/packages/ui/src/components/session-turn.css
+++ b/packages/ui/src/components/session-turn.css
@@ -1,4 +1,5 @@
 [data-component="session-turn"] {
+  --sticky-header-height: calc(var(--session-title-height, 0px) + 24px);
   height: 100%;
   min-height: 0;
   min-width: 0;
@@ -25,7 +26,7 @@
     align-items: flex-start;
     align-self: stretch;
     min-width: 0;
-    gap: 0px;
+    gap: 18px;
     overflow-anchor: none;
   }
 
@@ -42,127 +43,30 @@
     align-self: stretch;
   }
 
-  [data-slot="session-turn-assistant-lane"] {
-    width: 100%;
-    min-width: 0;
-    display: flex;
-    flex-direction: column;
-    align-self: stretch;
-  }
-
   [data-slot="session-turn-thinking"] {
     display: flex;
-    flex-wrap: nowrap;
     align-items: center;
     gap: 8px;
     width: 100%;
     min-width: 0;
-    white-space: nowrap;
     color: var(--text-weak);
     font-family: var(--font-family-sans);
     font-size: var(--font-size-base);
     font-weight: var(--font-weight-medium);
-    line-height: var(--line-height-large);
-    height: 36px;
+    line-height: 20px;
+    min-height: 20px;
 
     [data-component="spinner"] {
       width: 16px;
       height: 16px;
     }
-
-    > [data-component="text-shimmer"] {
-      flex: 0 0 auto;
-      white-space: nowrap;
-    }
-  }
-
-  [data-slot="session-turn-handoff-wrap"] {
-    width: 100%;
-    min-width: 0;
-    overflow: visible;
-  }
-
-  [data-slot="session-turn-handoff"] {
-    width: 100%;
-    min-width: 0;
-    min-height: 37px;
-    position: relative;
-  }
-
-  [data-slot="session-turn-thinking"] {
-    position: absolute;
-    inset: 0;
-    will-change: opacity, filter;
-    transition:
-      opacity 180ms ease-out,
-      filter 180ms ease-out,
-      transform 180ms ease-out;
-  }
-
-  [data-slot="session-turn-thinking"][data-visible="false"] {
-    opacity: 0;
-    filter: blur(2px);
-    transform: translateY(1px);
-    pointer-events: none;
-  }
-
-  [data-slot="session-turn-thinking"][data-visible="true"] {
-    opacity: 1;
-    filter: blur(0px);
-    transform: translateY(0px);
-  }
-
-  [data-slot="session-turn-meta"] {
-    position: absolute;
-    inset: 0;
-    min-height: 37px;
-    display: flex;
-    align-items: center;
-    justify-content: flex-start;
-    gap: 10px;
-    opacity: 0;
-    pointer-events: none;
-    transition: opacity 0.15s ease;
-  }
-
-  [data-slot="session-turn-meta"][data-interrupted] {
-    gap: 12px;
-  }
-
-  [data-slot="session-turn-meta"] [data-component="tooltip-trigger"] {
-    display: inline-flex;
-    width: fit-content;
-  }
-
-  [data-slot="session-turn-message-container"]:hover [data-slot="session-turn-meta"][data-visible="true"],
-  [data-slot="session-turn-message-container"]:focus-within [data-slot="session-turn-meta"][data-visible="true"] {
-    opacity: 1;
-    pointer-events: auto;
-  }
-
-  [data-slot="session-turn-meta-label"] {
-    user-select: none;
-    min-width: 0;
-    overflow: clip;
-    white-space: nowrap;
-    text-overflow: ellipsis;
   }
 
   [data-component="text-reveal"].session-turn-thinking-heading {
     flex: 1 1 auto;
     min-width: 0;
-    overflow: clip;
-    white-space: nowrap;
-    line-height: inherit;
     color: var(--text-weaker);
     font-weight: var(--font-weight-regular);
-
-    [data-slot="text-reveal-track"],
-    [data-slot="text-reveal-entering"],
-    [data-slot="text-reveal-leaving"] {
-      min-height: 0;
-      line-height: inherit;
-    }
   }
 
   .error-card {
@@ -180,7 +84,7 @@
     display: flex;
     flex-direction: column;
     align-self: stretch;
-    gap: 0px;
+    gap: 12px;
 
     > :first-child > [data-component="markdown"]:first-child {
       margin-top: 0;
@@ -205,7 +109,6 @@
 
   [data-component="session-turn-diffs-trigger"] {
     width: 100%;
-    height: 36px;
     display: flex;
     align-items: center;
     justify-content: flex-start;
@@ -215,7 +118,7 @@
 
   [data-slot="session-turn-diffs-title"] {
     display: inline-flex;
-    align-items: center;
+    align-items: baseline;
     gap: 8px;
   }
 
@@ -233,7 +136,7 @@
     font-variant-numeric: tabular-nums;
     font-size: var(--font-size-base);
     font-weight: var(--font-weight-regular);
-    line-height: var(--line-height-large);
+    line-height: var(--line-height-x-large);
   }
 
   [data-slot="session-turn-diffs-meta"] {
@@ -269,10 +172,8 @@
 
   [data-slot="session-turn-diff-path"] {
     display: flex;
+    flex-grow: 1;
     min-width: 0;
-    align-items: baseline;
-    overflow: clip;
-    white-space: nowrap;
 
     font-family: var(--font-family-sans);
     font-size: var(--font-size-small);
@@ -280,22 +181,16 @@
   }
 
   [data-slot="session-turn-diff-directory"] {
-    flex: 1 1 auto;
-    color: var(--text-weak);
-    min-width: 0;
-    overflow: clip;
+    color: var(--text-base);
+    overflow: hidden;
+    text-overflow: ellipsis;
     white-space: nowrap;
     direction: rtl;
-    unicode-bidi: plaintext;
     text-align: left;
   }
 
   [data-slot="session-turn-diff-filename"] {
     flex-shrink: 0;
-    max-width: 100%;
-    min-width: 0;
-    overflow: clip;
-    white-space: nowrap;
     color: var(--text-strong);
     font-weight: var(--font-weight-medium);
   }