feat(gitea): add Gitea/Forgejo as a git provider

Full parity with the existing GitLab provider:
- Server module packages/web/server/lib/gitea (auth/client/repo/routes + docs + tests)
  with Gitea REST v1 API, PAT + base URL auth, multi-account storage
- Shared GiteaAPI types and web API client
- Provider detection generalized with user-configurable custom domains
  per provider (github/gitlab/gitea), additive with built-in defaults
  (github.com, gitlab.com) and connected-account hosts; precedence
  github -> gitlab -> gitea
- Gitea PR view, issues section, pickers, integration dialog, branch
  PR status helper, settings UI (PAT + base URL + custom domains)
- Magic prompts (gitea.pr.review, gitea.issue.review) and full 11-locale
  i18n parity

packages/ui/src/components/views/GitView.tsx

@@ -60,6 +60,7 @@ import { BranchIntegrationSection, type OperationLogEntry } from './git/BranchIn
 import { deriveBaseBranch } from './git/baseBranch';
 import { getFreshestPrStatusForBranch, useGitHubPrStatusStore } from '@/stores/useGitHubPrStatusStore';
 import { useGitLabMrForBranch } from '@/lib/gitlabMrStatus';
+import { useGiteaPrForBranch } from '@/lib/giteaPrStatus';
 import { createGitIndexMutationQueue, type GitIndexMutationDirection, type GitIndexMutationQueue } from './git/gitIndexMutationQueue';
 import type { GitRemote } from '@/lib/gitApi';
 import { getRootBranch } from '@/lib/worktrees/worktreeStatus';
@@ -306,6 +307,7 @@ export const GitView: React.FC<GitViewProps> = ({ isActive }) => {
 
   const prStatusBranch = status?.current ?? null;
   const { mr: gitLabMr } = useGitLabMrForBranch(currentDirectory, prStatusBranch);
+  const { pr: giteaPr } = useGiteaPrForBranch(currentDirectory, prStatusBranch);
   const prChipStatus = useGitHubPrStatusStore((state) => {
     if (!currentDirectory || !prStatusBranch) {
       return null;
@@ -2367,6 +2369,10 @@ export const GitView: React.FC<GitViewProps> = ({ isActive }) => {
             onOpenGitLabMr={
               currentDirectory ? () => openContextSurface(currentDirectory, 'pr') : undefined
             }
+            giteaPr={giteaPr}
+            onOpenGiteaPr={
+              currentDirectory ? () => openContextSurface(currentDirectory, 'pr') : undefined
+            }
           />
 
       {/* In-progress operation banner */}