feat(rhema-code): add the colors setting with four palettes

The stored `colors` key names a palette — rhema (the default,
Jadeite), aquamarine, black-and-white, or dracula — and the
Appearance page of /settings cycles it live, like the theme and
icon toggles beside it. Each palette carries a dark and a light
appearance under the existing `theme` key; dracula's light side is
derived, the official palette ships only dark.

The appearance decision moves off token comparison: Theme now
answers is_dark() from the ground/text luminance, so palettes
beyond the original two get the right per-profile fallback tones.

web/claw/app/components/TurnEntries.vue

@@ -0,0 +1,43 @@
+<script setup lang="ts">
+// A turn's stream-ordered middle: tool rows, the agent's asks, its
+// handovers — each at the position the stream delivered it, so an ask
+// sits at the tool call that raised it rather than at the turn's top.
+import type { TurnEntry } from '~/composables/useTranscript'
+import type { ConsentAnswer } from '~/composables/useClaw'
+
+defineProps<{ entries: TurnEntry[] }>()
+
+const emit = defineEmits<{
+  consentAnswer: [id: string, answer: ConsentAnswer]
+  consentDeny: [id: string]
+  downloadAttachment: [id: string, name: string]
+}>()
+</script>
+
+<template>
+  <div v-if="entries.length > 0" class="entries">
+    <template v-for="(entry, index) in entries" :key="index">
+      <TurnToolRow v-if="entry.kind === 'tool'" :row="entry.row" />
+      <TurnConsentCard
+        v-else-if="entry.kind === 'consent'"
+        :consent="entry.consent"
+        @answer="(id, answer) => emit('consentAnswer', id, answer)"
+        @deny="(id) => emit('consentDeny', id)"
+      />
+      <TurnAttachmentCard
+        v-else
+        :attachment="entry.attachment"
+        @download="(id, name) => emit('downloadAttachment', id, name)"
+      />
+    </template>
+  </div>
+</template>
+
+<style scoped>
+.entries {
+  display: flex;
+  flex-direction: column;
+  gap: 4px;
+  margin-bottom: 10px;
+}
+</style>