Initial commit: @eol/graphiql v0.3

Svelte 5 GraphiQL alternative for JSR. Covers:
- HTTP fetcher with injectable fetch; SSE/WS stubs
- Session store with tabs, auto-titling, persistence, rename
- Operation detection via graphql parse(); Toolbar picker
- CodeMirror 6 editor via cm6-graphql with theme prop
- Light theme preset (hand-rolled EditorView.theme)
- Doc explorer with breadcrumb nav and type guards
- History panel with 100-entry cap, favorite pinning
- Deno tests for operations, storage, and history eviction

1 files changed, 187 insertions, 0 deletions

diff --git a/source/library/components/HistoryPanel.svelte b/source/library/components/HistoryPanel.svelte
new file mode 100644
index 0000000..b7f5c4c
--- /dev/null
+++ b/source/library/components/HistoryPanel.svelte
@@ -0,0 +1,187 @@
+<script lang="ts">
+  import type { HistoryEntry } from "../state/history.svelte.ts";
+
+  type Props = {
+    entries: HistoryEntry[];
+    onClear: () => void;
+    onFavorite: (id: string) => void;
+    onLoad: (id: string, inNewTab: boolean) => void;
+    onRemove: (id: string) => void;
+  };
+
+  let { entries, onClear, onFavorite, onLoad, onRemove }: Props = $props();
+
+  const sorted = $derived([...entries].sort((a, b) => {
+    if (a.favorite !== b.favorite)
+      return a.favorite ? -1 : 1;
+
+    return b.timestamp - a.timestamp;
+  }));
+
+  function formatTimestamp(ms: number): string {
+    const d = new Date(ms);
+    return d.toLocaleString();
+  }
+
+  function onEntryClick(event: MouseEvent, id: string) {
+    onLoad(id, event.shiftKey);
+  }
+
+  function onEntryKey(event: KeyboardEvent, id: string) {
+    if (event.key === "Enter" || event.key === " ") {
+      event.preventDefault();
+      onLoad(id, event.shiftKey);
+    }
+  }
+</script>
+
+<style lang="scss">
+  .panel {
+    background: var(--graphiql-panel, #252526);
+    border-right: 1px solid var(--graphiql-border, #333);
+    display: grid;
+    grid-template-rows: auto 1fr;
+    height: 100%;
+    min-height: 0;
+    overflow: hidden;
+  }
+
+  .header {
+    align-items: center;
+    border-bottom: 1px solid var(--graphiql-border, #333);
+    display: flex;
+    justify-content: space-between;
+    padding: 0.5rem 0.75rem;
+  }
+
+  .title {
+    font-size: 0.8125rem;
+    font-weight: 600;
+  }
+
+  .clear {
+    background: none;
+    border: none;
+    color: var(--graphiql-muted, #858585);
+    cursor: pointer;
+    font-family: inherit;
+    font-size: 0.75rem;
+    padding: 0;
+
+    &:hover {
+      color: var(--graphiql-fg, #d4d4d4);
+    }
+  }
+
+  .list {
+    display: grid;
+    gap: 0.125rem;
+    min-height: 0;
+    overflow-y: auto;
+    padding: 0.375rem 0;
+  }
+
+  .entry {
+    align-items: flex-start;
+    cursor: pointer;
+    display: grid;
+    gap: 0.125rem;
+    grid-template-columns: auto 1fr auto;
+    padding: 0.375rem 0.75rem;
+
+    &:hover {
+      background: var(--graphiql-bg, #1e1e1e);
+    }
+  }
+
+  .star {
+    background: none;
+    border: none;
+    color: var(--graphiql-muted, #858585);
+    cursor: pointer;
+    font-size: 0.875rem;
+    padding: 0 0.375rem 0 0;
+
+    &.active {
+      color: var(--graphiql-accent, #e3b341);
+    }
+  }
+
+  .meta {
+    align-self: center;
+    min-width: 0;
+  }
+
+  .entry-title {
+    font-size: 0.8125rem;
+    overflow: hidden;
+    text-overflow: ellipsis;
+    white-space: nowrap;
+  }
+
+  .entry-time {
+    color: var(--graphiql-muted, #858585);
+    font-size: 0.7rem;
+  }
+
+  .remove {
+    align-self: center;
+    background: none;
+    border: none;
+    color: var(--graphiql-muted, #858585);
+    cursor: pointer;
+    font-size: 1rem;
+    line-height: 1;
+    padding: 0 0.25rem;
+
+    &:hover {
+      color: var(--graphiql-fg, #d4d4d4);
+    }
+  }
+
+  .empty {
+    color: var(--graphiql-muted, #858585);
+    font-size: 0.8125rem;
+    padding: 0.75rem;
+  }
+</style>
+
+<div class="panel">
+  <div class="header">
+    <span class="title">History</span>
+    {#if entries.length > 0}
+      <button class="clear" onclick={onClear} type="button">Clear</button>
+    {/if}
+  </div>
+  <div class="list">
+    {#if sorted.length === 0}
+      <div class="empty">No history yet.</div>
+    {:else}
+      {#each sorted as entry (entry.id)}
+        <div
+          aria-label="Load history entry"
+          class="entry"
+          onclick={(e) => onEntryClick(e, entry.id)}
+          onkeydown={(e) => onEntryKey(e, entry.id)}
+          role="button"
+          tabindex="0">
+          <button
+            aria-label={entry.favorite ? "Unfavorite" : "Favorite"}
+            class="star"
+            class:active={entry.favorite}
+            onclick={(e) => { e.stopPropagation(); onFavorite(entry.id); }}
+            type="button">{entry.favorite ? "★" : "☆"}</button>
+          <div class="meta">
+            <div class="entry-title">{entry.title}</div>
+            <div class="entry-time">{formatTimestamp(entry.timestamp)}</div>
+          </div>
+          <button
+            aria-label="Remove entry"
+            class="remove"
+            onclick={(e) => { e.stopPropagation(); onRemove(entry.id); }}
+            type="button">×</button>
+        </div>
+      {/each}
+    {/if}
+  </div>
+</div>