Turbo edits v2 (#1653)

Fixes #1222 #1646 

TODOs
- [x] description?
- [x] collect errors across all files for turbo edits
- [x] be forgiving around whitespaces
- [x] write e2e tests
- [x] do more manual testing across different models



<!-- CURSOR_SUMMARY -->
---

> [!NOTE]
> Adds Turbo Edits v2 search-replace flow with settings/UI selector,
parser/renderer, dry-run validation + fallback, proposal integration,
and comprehensive tests; updates licensing.
> 
> - **Engine/Processing**:
> - Add `dyad-search-replace` end-to-end: parsing
(`getDyadSearchReplaceTags`), markdown rendering (`DyadSearchReplace`),
and application (`applySearchReplace`) with dry-run validation and
fallback to `dyad-write`.
> - Inject Turbo Edits v2 system prompt; toggle via
`isTurboEditsV2Enabled`; disable classic lazy edits when v2 is on.
> - Include search-replace edits in proposals and full-response
processing.
> - **Settings/UI**:
> - Introduce `proLazyEditsMode` (`off`|`v1`|`v2`) and helper selectors;
update `ProModeSelector` with Turbo Edits and Smart Context selectors
(`data-testid`s).
> - **LLM/token flow**:
> - Construct system prompt conditionally; update token counting and
chat stream to validate and repair search-replace responses.
> - **Tests**:
> - Add unit tests for search-replace processor; e2e tests for Turbo
Edits v2 and options; fixtures and snapshots.
> - **Licensing/Docs**:
> - Add `src/pro/LICENSE` (FSL 1.1 ALv2 future), update root `LICENSE`
and README license section.
> - **Tooling**:
> - Update `.prettierignore`; enhance test helpers (selectors, path
normalization, snapshot filtering).
> 
> <sup>Written by [Cursor
Bugbot](https://cursor.com/dashboard?tab=bugbot) for commit
7aefa02bfae2fe22a25c7d87f3c4c326f820f1e6. This will update automatically
on new commits. Configure
[here](https://cursor.com/dashboard?tab=bugbot).</sup>
<!-- /CURSOR_SUMMARY -->

src/ipc/utils/dyad_tag_parser.ts

@@ -137,3 +137,48 @@ export function getDyadCommandTags(fullResponse: string): string[] {
 
   return commands;
 }
+
+export function getDyadSearchReplaceTags(fullResponse: string): {
+  path: string;
+  content: string;
+  description?: string;
+}[] {
+  const dyadSearchReplaceRegex =
+    /<dyad-search-replace([^>]*)>([\s\S]*?)<\/dyad-search-replace>/gi;
+  const pathRegex = /path="([^"]+)"/;
+  const descriptionRegex = /description="([^"]+)"/;
+
+  let match;
+  const tags: { path: string; content: string; description?: string }[] = [];
+
+  while ((match = dyadSearchReplaceRegex.exec(fullResponse)) !== null) {
+    const attributesString = match[1] || "";
+    let content = match[2].trim();
+
+    const pathMatch = pathRegex.exec(attributesString);
+    const descriptionMatch = descriptionRegex.exec(attributesString);
+
+    if (pathMatch && pathMatch[1]) {
+      const path = pathMatch[1];
+      const description = descriptionMatch?.[1];
+
+      // Handle markdown code fences if present
+      const contentLines = content.split("\n");
+      if (contentLines[0]?.startsWith("```")) {
+        contentLines.shift();
+      }
+      if (contentLines[contentLines.length - 1]?.startsWith("```")) {
+        contentLines.pop();
+      }
+      content = contentLines.join("\n");
+
+      tags.push({ path: normalizePath(path), content, description });
+    } else {
+      logger.warn(
+        "Found <dyad-search-replace> tag without a valid 'path' attribute:",
+        match[0],
+      );
+    }
+  }
+  return tags;
+}

src/ipc/utils/get_model_client.ts

@@ -89,7 +89,8 @@ export async function getModelClient(
           enableLazyEdits:
             settings.selectedChatMode === "ask"
               ? false
-              : settings.enableProLazyEditsMode,
+              : settings.enableProLazyEditsMode &&
+                settings.proLazyEditsMode !== "v2",
           enableSmartFilesContext,
           // Keep in sync with getCurrentValue in ProModeSelector.tsx
           smartContextMode: settings.proSmartContextOption ?? "balanced",