refactor: replace Fomantic search module with first-party code (#37443)

- Replace fomantic `search` code with minimal first-party code
- Added a small fix to vertically align search box and search button
- Manually tested all search forms.
- Add `errorName` helper, similar to `errorMessage`.

Signed-off-by: silverwind <me@silverwind.io>
Co-authored-by: Claude (Opus 4.7) <noreply@anthropic.com>

tests/e2e/org.test.ts

@@ -1,5 +1,5 @@
 import {test, expect} from '@playwright/test';
-import {login, apiDeleteOrg, randomString} from './utils.ts';
+import {login, apiCreateOrg, apiCreateTeam, apiCreateUser, apiDeleteOrg, randomString} from './utils.ts';
 
 test('create an organization', async ({page}) => {
   const orgName = `e2e-org-${randomString(8)}`;
@@ -11,3 +11,24 @@ test('create an organization', async ({page}) => {
   // delete via API because of issues related to form-fetch-action
   await apiDeleteOrg(page.request, orgName);
 });
+
+test('add team member search', async ({page, request}) => {
+  const orgName = `team-add-${randomString(8)}`;
+  const teamName = `team-add-${randomString(8)}`;
+  const userName = `team-add-${randomString(8)}`;
+
+  await Promise.all([
+    (async () => {
+      await apiCreateOrg(request, orgName);
+      await apiCreateTeam(request, orgName, teamName);
+    })(),
+    apiCreateUser(request, userName),
+    login(page),
+  ]);
+
+  await page.goto(`/org/${orgName}/teams/${teamName}`);
+  const input = page.locator('#search-user-box input.prompt');
+  await input.fill(userName.slice(-6));
+  const result = page.locator('#search-user-box .results .result').first();
+  await expect(result).toContainText(userName);
+});

tests/e2e/repo-collab.test.ts

@@ -0,0 +1,24 @@
+import {env} from 'node:process';
+import {test, expect} from '@playwright/test';
+import {apiCreateRepo, apiCreateUser, login, randomString} from './utils.ts';
+
+test('add collaborator search', async ({page, request}) => {
+  const userName = `repo-collab-${randomString(8)}`;
+  const repoName = `repo-collab-${randomString(8)}`;
+
+  await Promise.all([
+    apiCreateUser(request, userName),
+    apiCreateRepo(request, {name: repoName, autoInit: false}),
+    login(page),
+  ]);
+
+  await page.goto(`/${env.GITEA_TEST_E2E_USER}/${repoName}/settings/collaboration`);
+  const input = page.locator('#search-user-box input.prompt');
+  await input.fill(userName.slice(-6));
+  const result = page.locator('#search-user-box .results .result').first();
+  await expect(result).toContainText(userName);
+  await result.click();
+  await expect(input).toHaveValue(userName);
+  await page.getByRole('button', {name: 'Add Collaborator'}).click();
+  await expect(page.locator('body')).toContainText(userName);
+});

tests/e2e/utils.ts

@@ -47,6 +47,20 @@ export async function apiCreateRepo(requestContext: APIRequestContext, {name, au
   }), 'apiCreateRepo');
 }
 
+export async function apiCreateOrg(requestContext: APIRequestContext, name: string, {headers}: {headers?: Record<string, string>} = {}) {
+  await apiRetry(() => requestContext.post(`${baseUrl()}/api/v1/orgs`, {
+    headers: headers || apiHeaders(),
+    data: {username: name},
+  }), 'apiCreateOrg');
+}
+
+export async function apiCreateTeam(requestContext: APIRequestContext, org: string, name: string, {permission = 'read', units = ['repo.code'], headers}: {permission?: string; units?: Array<string>; headers?: Record<string, string>} = {}) {
+  await apiRetry(() => requestContext.post(`${baseUrl()}/api/v1/orgs/${org}/teams`, {
+    headers: headers || apiHeaders(),
+    data: {name, permission, units},
+  }), 'apiCreateTeam');
+}
+
 export async function apiStartStopwatch(requestContext: APIRequestContext, owner: string, repo: string, issueIndex: number, {headers}: {headers?: Record<string, string>} = {}) {
   await apiRetry(() => requestContext.post(`${baseUrl()}/api/v1/repos/${owner}/${repo}/issues/${issueIndex}/stopwatch/start`, {
     headers: headers || apiHeaders(),