perf improvements + /login fix

src/components/Messages.tsx

@@ -377,7 +377,13 @@ const MessagesImpl = ({
     columns
   } = useTerminalSize();
   const toggleShowAllShortcut = useShortcutDisplay('transcript:toggleShowAll', 'Transcript', 'Ctrl+E');
-  const normalizedMessages = useMemo(() => normalizeMessages(messages).filter(isNotEmptyMessage), [messages]);
+  // In the main-screen renderer, pre-compact history already lives in native
+  // terminal scrollback, so normalizing it again just adds O(n) work on every
+  // render. Fullscreen/transcript modes still need the full in-memory history.
+  const normalizationSourceMessages = useMemo(() => verbose || isFullscreenEnvEnabled() ? messages : getMessagesAfterCompactBoundary(messages, {
+    includeSnipped: true
+  }), [messages, verbose]);
+  const normalizedMessages = useMemo(() => normalizeMessages(normalizationSourceMessages).filter(isNotEmptyMessage), [normalizationSourceMessages]);
 
   // Check if streaming thinking should be visible (streaming or within 30s timeout)
   const isStreamingThinkingVisible = useMemo(() => {
@@ -485,18 +491,7 @@ const MessagesImpl = ({
     hasTruncatedMessages: hasTruncatedMessages_0,
     hiddenMessageCount: hiddenMessageCount_0
   } = useMemo(() => {
-    // In fullscreen mode the alt buffer has no native scrollback, so the
-    // compact-boundary filter just hides history the ScrollBox could
-    // otherwise scroll to. Main-screen mode keeps the filter — pre-compact
-    // rows live above the viewport in native scrollback there, and
-    // re-rendering them triggers full resets.
-    // includeSnipped: UI rendering keeps snipped messages for scrollback
-    // (this PR's core goal — full history in UI, filter only for the model).
-    // Also avoids a UUID mismatch: normalizeMessages derives new UUIDs, so
-    // projectSnippedView's check against original removedUuids would fail.
-    const compactAwareMessages = verbose || isFullscreenEnvEnabled() ? normalizedMessages : getMessagesAfterCompactBoundary(normalizedMessages, {
-      includeSnipped: true
-    });
+    const compactAwareMessages = normalizedMessages;
     const messagesToShowNotTruncated = reorderMessagesInUI(compactAwareMessages.filter((msg_2): msg_2 is Exclude<NormalizedMessage, ProgressMessageType> => msg_2.type !== 'progress')
     // CC-724: drop attachment messages that AttachmentMessage renders as
     // null (hook_success, hook_additional_context, hook_cancelled, etc.)

src/components/OpenRouterLoginFlow.tsx

@@ -0,0 +1,88 @@
+import * as React from 'react'
+import { useState } from 'react'
+import { Box, Text } from '../ink.js'
+import { saveOpenRouterApiKey } from '../utils/auth.js'
+import { Spinner } from './Spinner.js'
+import TextInput from './TextInput.js'
+
+type OpenRouterLoginFlowProps = {
+  onDone: () => void
+  startingMessage?: string
+}
+
+export function OpenRouterLoginFlow({
+  onDone,
+  startingMessage,
+}: OpenRouterLoginFlowProps): React.ReactNode {
+  const [isBusy, setIsBusy] = useState(false)
+  const [status, setStatus] = useState<string | null>(null)
+  const [inputValue, setInputValue] = useState('')
+  const [cursorOffset, setCursorOffset] = useState(0)
+
+  async function handleSubmit(value: string): Promise<void> {
+    const trimmed = value.trim()
+    if (!trimmed) {
+      return
+    }
+
+    setIsBusy(true)
+    setStatus(null)
+    try {
+      await saveOpenRouterApiKey(trimmed)
+      onDone()
+    } catch (error) {
+      setStatus(error instanceof Error ? error.message : String(error))
+    } finally {
+      setIsBusy(false)
+    }
+  }
+
+  if (isBusy) {
+    return (
+      <Box flexDirection="column" gap={1}>
+        <Box>
+          <Spinner />
+          <Text>Configuring OpenRouter login for Better-Clawd...</Text>
+        </Box>
+        <Text dimColor={true}>
+          OpenRouter support uses your OpenRouter API key with the Responses API
+          endpoint.
+        </Text>
+      </Box>
+    )
+  }
+
+  return (
+    <Box flexDirection="column" gap={1}>
+      <Text>
+        {startingMessage ??
+          'Better-Clawd can use OpenRouter with your OpenRouter API key.'}
+      </Text>
+      <Text dimColor={true}>
+        Paste your OpenRouter key to use `https://openrouter.ai/api/v1` and the
+        Responses API compatibility layer.
+      </Text>
+      <Box>
+        <Text>Paste your OpenRouter API key:</Text>
+        <TextInput
+          value={inputValue}
+          onChange={setInputValue}
+          onSubmit={handleSubmit}
+          onExit={() => {
+            setInputValue('')
+            setCursorOffset(0)
+          }}
+          cursorOffset={cursorOffset}
+          onChangeCursorOffset={setCursorOffset}
+          columns={72}
+          mask="*"
+        />
+      </Box>
+      {status ? <Text color="error">{status}</Text> : null}
+      <Text dimColor={true}>
+        Press <Text bold={true}>Enter</Text> to save, or <Text bold={true}>Esc</Text>{' '}
+        to cancel.
+      </Text>
+    </Box>
+  )
+}