fix: use current branch when creating new chat instead of hardcoding main (#2411)

## Summary - **Fixes #2396**: When creating a new chat (including "summarize to new chat"), the system was hardcoding `ref: "main"` when getting the `initialCommitHash`, causing issues when users work on feature branches - Changed to use the default `"HEAD"` ref instead, so the chat correctly tracks the currently checked-out branch's commit - This prevents merge conflicts and ensures changes are applied to the correct branch ## Test plan 1. Create a feature branch from main 2. Create a new chat while on the feature branch 3. Verify the new chat tracks the feature branch's commit, not main's commit 4. Test "summarize to new chat" functionality while on a feature branch 🤖 Generated with [Claude Code](https://claude.com/claude-code)  --- <a href="https://app.devin.ai/review/dyad-sh/dyad/pull/2411"> <picture> <source media="(prefers-color-scheme: dark)" srcset="https://static.devin.ai/assets/gh-open-in-devin-review-dark.svg?v=1"> <img src="https://static.devin.ai/assets/gh-open-in-devin-review-light.svg?v=1" alt="Open with Devin"> </picture> </a>   --- > [!NOTE] > **Low Risk** > Low risk: a small, localized change that only affects which git ref is used to capture `initialCommitHash` during chat creation. > > **Overview** > When creating a new chat, the `initialCommitHash` is now resolved from the repo’s current `HEAD` rather than forcing `ref: "main"`, so chats created on feature branches track the correct starting commit. > > <sup>Written by [Cursor Bugbot](https://cursor.com/dashboard?tab=bugbot) for commit 541b373218a04781d63dfdb05474b4f110d38ab0. This will update automatically on new commits. Configure [here](https://cursor.com/dashboard?tab=bugbot).</sup>   --- ## Summary by cubic New chats now use the currently checked-out branch (HEAD) to resolve initialCommitHash instead of hardcoding main. This ensures chats track the correct branch and prevents merge conflicts. Fixes #2396. <sup>Written for commit 541b373218a04781d63dfdb05474b4f110d38ab0. Summary will update on new commits.</sup>  Co-authored-by: Claude Opus 4.5 <noreply@anthropic.com>

fix: use current branch when creating new chat instead of hardcoding main (#2411)
51c810ec · Will Chen · GitHub · c1c2ef68 · 51c810ec
--- a/src/ipc/handlers/chat_handlers.ts
+++ b/src/ipc/handlers/chat_handlers.ts
@@ -27,10 +27,9 @@ export function registerChatHandlers() {

    let initialCommitHash = null;
    try {
-      // Get the current git revision of main branch
+      // Get the current git revision of the currently checked-out branch
      initialCommitHash = await getCurrentCommitHash({
        path: getDyadAppPath(app.path),
-        ref: "main",
      });
    } catch (error) {
      logger.error("Error getting git revision:", error);