fix: skip diff mode when search string is provided in snapshot/markdown/html

When both showDiffSinceLastCall and search were set, the diff block
returned early and the search filter was silently ignored. Now all
three functions (snapshot, getPageMarkdown, getCleanHTML) skip diffing
when a search string is present, ensuring the agent always gets
filtered results.

playwriter/src/clean-html.ts

@@ -76,8 +76,8 @@ export async function getCleanHTML(options: GetCleanHTMLOptions): Promise<string
   const previousSnapshot = pageSnapshots.get(snapshotKey)
   pageSnapshots.set(snapshotKey, htmlStr)
 
-  // Return diff if we have a previous snapshot and diff mode is enabled
-  if (showDiffSinceLastCall && previousSnapshot) {
+  // Never diff when agent is searching — search should always filter the full content
+  if (showDiffSinceLastCall && previousSnapshot && !search) {
     const diffResult = createSmartDiff({
       oldContent: previousSnapshot,
       newContent: htmlStr,

playwriter/src/executor.ts

@@ -772,8 +772,8 @@ export class PlaywrightExecutor {
           this.lastSnapshots.set(resolvedPage, snapshotStr)
         }
 
-        // Return diff if we have a previous snapshot and diff mode is enabled
-        if (showDiffSinceLastCall && previousSnapshot && shouldCacheSnapshot) {
+        // Never diff when agent is searching — search should always filter the full snapshot
+        if (showDiffSinceLastCall && previousSnapshot && shouldCacheSnapshot && !search) {
           const diffResult = createSmartDiff({
             oldContent: previousSnapshot,
             newContent: snapshotStr,

playwriter/src/page-markdown.ts

@@ -172,8 +172,8 @@ export async function getPageMarkdown(options: GetPageMarkdownOptions): Promise<
   const previousSnapshot = lastMarkdownSnapshots.get(page)
   lastMarkdownSnapshots.set(page, markdown)
 
-  // Return diff if we have a previous snapshot and diff mode is enabled
-  if (showDiffSinceLastCall && previousSnapshot) {
+  // Never diff when agent is searching — search should always filter the full content
+  if (showDiffSinceLastCall && previousSnapshot && !search) {
     const diffResult = createSmartDiff({
       oldContent: previousSnapshot,
       newContent: markdown,