From 2cce994535c65cb502dc4c5034a1d9cb5f84ac21 Mon Sep 17 00:00:00 2001
From: "copilot-swe-agent[bot]" <198982749+Copilot@users.noreply.github.com>
Date: Tue, 8 Sep 2026 22:48:37 +0000
Subject: [PATCH 1/2] Initial plan


From 56c6c06707c41e9e50d39150f09c782cb60e4008 Mon Sep 17 00:00:00 2001
From: "copilot-swe-agent[bot]" <198982749+Copilot@users.noreply.github.com>
Date: Tue, 8 Sep 2026 22:52:48 +0000
Subject: [PATCH 2/2] perf(web): add transcript no-filter fast path

Co-authored-by: groupthinking <154503486+groupthinking@users.noreply.github.com>
---
 apps/web/src/lib/__tests__/transcript-search.test.ts | 4 ++++
 apps/web/src/lib/transcript-search.ts                | 2 ++
 2 files changed, 6 insertions(+)

diff --git a/apps/web/src/lib/__tests__/transcript-search.test.ts b/apps/web/src/lib/__tests__/transcript-search.test.ts
index f94e35c22..105269a1c 100644
--- a/apps/web/src/lib/__tests__/transcript-search.test.ts
+++ b/apps/web/src/lib/__tests__/transcript-search.test.ts
@@ -54,6 +54,10 @@ describe('filterSegments — empty/null query behavior (#908)', () => {
       segments.length,
     );
   });
+
+  it('returns the original segment array when no filters are active', () => {
+    expect(filterSegments(segments, { search: '' })).toBe(segments);
+  });
 });
 
 describe('filterSegments — null-safe segment text (#908)', () => {
diff --git a/apps/web/src/lib/transcript-search.ts b/apps/web/src/lib/transcript-search.ts
index 7a22c05aa..0c1c12ab9 100644
--- a/apps/web/src/lib/transcript-search.ts
+++ b/apps/web/src/lib/transcript-search.ts
@@ -68,6 +68,8 @@ export function filterSegments(
   segments: readonly TranscriptSegment[],
   { search, speaker }: TranscriptFilter,
 ): TranscriptSegment[] {
+  if (!search && !speaker) return segments as TranscriptSegment[];
+
   // Hoisted out of the loop: removes N toLowerCase() allocations per keystroke
   // update on long transcripts. This is the optimization PR #972 shipped.
   const lowerSearchQuery = search ? search.toLowerCase() : '';