Replace custom markdown renderer with react-markdown

- Add react-markdown and remark-gfm dependencies
- Remove hacky regex-based renderMarkdown function
- Full GFM support: tables, task lists, strikethrough, autolinks
- Update CSS for react-markdown output (task lists, blockquotes, hr)
- Cleaner, more maintainable code

1 files changed, 34 insertions, 16 deletions

diff --git a/renderer/src/styles/globals.css b/renderer/src/styles/globals.css
index 380a744..384ebc5 100644
--- a/renderer/src/styles/globals.css
+++ b/renderer/src/styles/globals.css
@@ -171,12 +171,14 @@ body {
 }
 .document-content.rendered p {
   margin: 8px 0;
+  line-height: 1.6;
 }
 .document-content.rendered code {
   background: var(--bg-tertiary);
   padding: 2px 6px;
   border-radius: 4px;
   font-size: 13px;
+  font-family: "SF Mono", Monaco, "Cascadia Code", monospace;
 }
 .document-content.rendered pre {
   background: var(--bg-tertiary);
@@ -189,16 +191,26 @@ body {
   background: none;
   padding: 0;
 }
+.document-content.rendered ul,
+.document-content.rendered ol {
+  margin: 12px 0;
+  padding-left: 24px;
+}
 .document-content.rendered li {
-  margin-left: 24px;
-  margin-bottom: 4px;
+  margin-bottom: 6px;
+  line-height: 1.5;
 }
-.document-content.rendered li.task {
+.document-content.rendered ul.contains-task-list {
   list-style: none;
-  margin-left: 0;
+  padding-left: 0;
 }
-.document-content.rendered li.task.done {
-  color: var(--success);
+.document-content.rendered li.task-list-item {
+  display: flex;
+  align-items: flex-start;
+  gap: 8px;
+}
+.document-content.rendered li.task-list-item input[type="checkbox"] {
+  margin-top: 4px;
 }
 .document-content.rendered table {
   width: 100%;
@@ -219,17 +231,23 @@ body {
 .document-content.rendered tr:nth-child(even) td {
   background: var(--bg-secondary);
 }
-.document-content.rendered mark.review {
-  background: var(--warning);
-  color: black;
-  padding: 2px 4px;
-  border-radius: 2px;
+.document-content.rendered blockquote {
+  border-left: 3px solid var(--accent);
+  margin: 16px 0;
+  padding-left: 16px;
+  color: var(--text-secondary);
 }
-.document-content.rendered mark.note {
-  background: var(--accent);
-  color: white;
-  padding: 2px 4px;
-  border-radius: 2px;
+.document-content.rendered hr {
+  border: none;
+  border-top: 1px solid var(--border);
+  margin: 24px 0;
+}
+.document-content.rendered a {
+  color: var(--accent);
+  text-decoration: none;
+}
+.document-content.rendered a:hover {
+  text-decoration: underline;
 }
 .document-content.rendered .empty {
   color: var(--text-secondary);