feat(git): add multi-remote push with remote selection and fork-aware PR creation (#365)

* fix: Usage drop down should be scrollable

* fix: When there are multiple remotes, provide the user with an option of which branch to push to

* feat(gitview): add remote-push selection and auto checkout on create

* feat: enable selecting remote when creating PR

* fix: show PR icon in create button when not creating

* fix(pullrequest): drop remote picker and use explicit remote

* feat: add remote selection for PR status and creation

* fix: improve PR creation with selected remote and fork head

* chore(ui): simplify PR remote link UI

* fix(web): handle cross-repo PRs and branch validation

* feat: add remote selection for commit and push

* feat(git): delegate PR head source resolution to server

* chore(web): remove noisy PR creation logs

packages/ui/src/components/views/git/GitHeader.tsx

@@ -40,7 +40,7 @@ interface GitHeaderProps {
   onPull: (remote: GitRemote) => void;
   onPush: (remote: GitRemote) => void;
   onCheckoutBranch: (branch: string) => void;
-  onCreateBranch: (name: string) => Promise<void>;
+  onCreateBranch: (name: string, remote?: GitRemote) => Promise<void>;
   onRenameBranch?: (oldName: string, newName: string) => Promise<void>;
   activeIdentityProfile: GitIdentityProfile | null;
   availableIdentities: GitIdentityProfile[];
@@ -301,6 +301,7 @@ export const GitHeader: React.FC<GitHeaderProps> = ({
                 branchInfo={branchInfo}
                 onCheckout={onCheckoutBranch}
                 onCreate={onCreateBranch}
+                remotes={remotes}
                 tooltipDelayMs={useTwoRowHeader ? 300 : 1000}
               />
             )}
@@ -334,6 +335,7 @@ export const GitHeader: React.FC<GitHeaderProps> = ({
             branchInfo={branchInfo}
             onCheckout={onCheckoutBranch}
             onCreate={onCreateBranch}
+            remotes={remotes}
           />
         )}