feat(markdown): render local-path images inline via backend image route

1 files changed, 16 insertions, 3 deletions

diff --git a/src/features/markdown/ui/Markdown.svelte b/src/features/markdown/ui/Markdown.svelte
index da2c9ba..0adbbea 100644
--- a/src/features/markdown/ui/Markdown.svelte
+++ b/src/features/markdown/ui/Markdown.svelte
@@ -1,16 +1,29 @@
 <script lang="ts">
-  import { renderMarkdown } from "../logic/markdown";
+  import { type MarkdownImageOptions, renderMarkdown } from "../logic/markdown";
   import { advance, createStreamingMarkdown } from "../logic/streaming-markdown";
 
   let {
     text,
     streaming = false,
+    image = undefined,
   }: {
     text: string;
     /** Balance dangling delimiters while the message is still generating. */
     streaming?: boolean;
+    /**
+     * Per-conversation local-image context: the backend HTTP base and the
+     * conversation cwd. Markdown image srcs that are local paths are rewritten
+     * through `${apiBase}/local-image?path=…` (relative paths resolve against
+     * `cwd`); remote/data URLs are untouched. Omit it to render srcs as-is.
+     */
+    image?: MarkdownImageOptions;
   } = $props();
 
+  // Keep the optional `image` out of the options object when absent
+  // (exactOptionalPropertyTypes). Identity is irrelevant: the streaming cache
+  // keys on apiBase/cwd values.
+  const renderOpts = $derived(image === undefined ? undefined : { image });
+
   // Checkpoint streaming state: one per component instance (per streaming
   // message). It caches the settled blocks' HTML so each delta re-renders only
   // the live tail — never the settled prefix (see logic/streaming-markdown).
@@ -22,8 +35,8 @@
   // chunk): ONE full authoritative render — today's exact behavior, so the
   // final/persisted output is byte-identical by construction.
   const rendered = $derived.by(() => {
-    if (!streaming) return { prefixHtml: "", tailHtml: renderMarkdown(text) };
-    return advance(streamingState, text);
+    if (!streaming) return { prefixHtml: "", tailHtml: renderMarkdown(text, renderOpts) };
+    return advance(streamingState, text, renderOpts);
   });
 
   let container: HTMLElement;