feat: add refresh button with loading state

Add a manual refresh button to the functions list that
re-fetches repos from GitHub on click. The button uses the
PF Button isLoading prop for a native spinner and is
disabled while a fetch is in flight.

Place create and refresh buttons in a PF Toolbar above the
table, separated by a vertical divider.

Fix a caching bug in GithubService where deleted repos
persisted after refresh. Replace the stale merge logic with
a pendingRepos buffer that only keeps locally created repos
until GitHub's search index catches up.

Signed-off-by: Matej Vašek <matejvasek@gmail.com>
Co-Authored-By: Claude <noreply@anthropic.com>

Author: matejvasek

docs/claude-progress.txt

@@ -37,6 +37,18 @@ Completed:
 Left off: Three follow-up items for next day.
 Blockers: oc login not accessible from agent sandbox (permission denied on ~/.kube/config)
 
+---
+## 2026-05-20 | Session: Refresh button and list page toolbar (PR #26)
+Worked on: Add refresh button to functions list, address review feedback
+- Added manual refresh button (SyncAltIcon) that re-fetches function repos from GitHub on click
+- Refresh uses PF Button isLoading prop for native spinner (no custom CSS animation)
+- Refresh button disabled while fetch is in flight (prevents queued refreshes)
+- Fixed caching bug in GithubService where deleted repos persisted after refresh (replaced stale merge logic with pendingRepos buffer)
+- Moved create and refresh buttons into a PF Toolbar above the table with ToolbarItem variant="separator"
+- 13 suites, 117 tests, all passing, zero lint errors
+Left off: PR #26 ready for re-review. Visual verification pending (could not authenticate to GitHub from sandbox).
+Blockers: None
+
 ---
 ## 2026-05-18 | Session: Error server and JSON error responses
 Worked on: Errserver for failed Go compilation, JSON error responses for backend

src/common/services/source-control/GithubService.test.ts

@@ -116,6 +116,36 @@ describe('GithubService', () => {
       expect(repos).toEqual([expectedRepo1, expectedRepo2]);
     });
 
+    it('removes a deleted repo from the list on next fetch', async () => {
+      // GIVEN: initial search returns two repos
+      const repo1 = {
+        owner: 'twoGiants',
+        name: 'my-func',
+        url: 'https://github.com/twoGiants/my-func',
+        defaultBranch: 'main',
+      };
+      const repo2 = {
+        owner: 'twoGiants',
+        name: 'my-func-2',
+        url: 'https://github.com/twoGiants/my-func-2',
+        defaultBranch: 'main',
+      };
+      setupGithubSearchReposResponse({ secondItem: repo2 });
+
+      const svc = new GithubService(() => 'pat');
+      let repos = await svc.listFunctionRepos();
+      expect(repos).toEqual([repo1, repo2]);
+
+      // GIVEN: repo2 is deleted, search now returns only repo1
+      setupGithubSearchReposResponse();
+
+      // WHEN
+      repos = await svc.listFunctionRepos();
+
+      // THEN: deleted repo is gone
+      expect(repos).toEqual([repo1]);
+    });
+
     function setupGithubSearchReposResponse({
       secondItem,
     }: {

src/common/services/source-control/GithubService.ts

@@ -7,7 +7,7 @@ export class GithubService implements SourceControlService {
   #cachedOctokit: Octokit | null = null;
   #cachedToken: string = '';
   #lastCommitSha = new Map<string, string>();
-  #cachedFunctionRepos: RepoMetadata[] = [];
+  #pendingRepos: RepoMetadata[] = [];
 
   constructor(getToken: () => string) {
     this.#getToken = getToken;
@@ -18,7 +18,7 @@ export class GithubService implements SourceControlService {
     if (token !== this.#cachedToken) {
       this.#cachedToken = token;
       this.#cachedOctokit = new Octokit({ auth: token });
-      this.#cachedFunctionRepos = [];
+      this.#pendingRepos = [];
       this.#lastCommitSha.clear();
     }
     return this.#cachedOctokit!;
@@ -44,9 +44,8 @@ export class GithubService implements SourceControlService {
       defaultBranch: item.default_branch,
     }));
     const fetchedNames = new Set(fetchedFunctionRepos.map((r) => r.name));
-    const unfetched = this.#cachedFunctionRepos.filter((r) => !fetchedNames.has(r.name));
-    this.#cachedFunctionRepos = [...fetchedFunctionRepos, ...unfetched];
-    return this.#cachedFunctionRepos;
+    this.#pendingRepos = this.#pendingRepos.filter((r) => !fetchedNames.has(r.name));
+    return [...fetchedFunctionRepos, ...this.#pendingRepos];
   }
 
   async createRepoWithSecret(
@@ -132,7 +131,7 @@ export class GithubService implements SourceControlService {
       sha: commit.sha,
     });
 
-    this.#cachedFunctionRepos.push({
+    this.#pendingRepos.push({
       owner,
       name: repoName,
       url: `https://github.com/${owner}/${repoName}`,

src/pages/function-list/FunctionsListPage.test.tsx

@@ -1,4 +1,5 @@
-import { render, screen } from '@testing-library/react';
+import { render, screen, waitFor } from '@testing-library/react';
+import userEvent from '@testing-library/user-event';
 import { MemoryRouter } from 'react-router-dom-v5-compat';
 import FunctionsListPage from './FunctionsListPage';
 import { PAT_KEY } from '../../common/services/types';
@@ -435,4 +436,126 @@ describe('FunctionsListPage', () => {
 
     expect(mockUseClusterService).toHaveBeenLastCalledWith(['fn-a']);
   });
+
+  it('re-fetches repos when refresh button is clicked', async () => {
+    renderAuthenticated();
+    const mockListRepos = vi.fn().mockResolvedValue([repoFixture('fn-a')]);
+    mockUseSourceControl.mockReturnValue({
+      listFunctionRepos: mockListRepos,
+      fetchFileContent: vi.fn().mockResolvedValue('name: fn-a\nruntime: go\nnamespace: demo\n'),
+    });
+    mockUseClusterService.mockReturnValue(clusterData());
+
+    render(
+      <MemoryRouter>
+        <FunctionsListPage />
+      </MemoryRouter>,
+    );
+
+    await screen.findByTestId('fn-name');
+    expect(mockListRepos).toHaveBeenCalledTimes(1);
+
+    await userEvent.click(screen.getByRole('button', { name: 'Refresh' }));
+
+    await waitFor(() => {
+      expect(mockListRepos).toHaveBeenCalledTimes(2);
+    });
+  });
+
+  it('does not show spinner on refresh button during initial page load', async () => {
+    renderAuthenticated();
+    mockUseSourceControl.mockReturnValue({
+      listFunctionRepos: vi.fn().mockResolvedValue([repoFixture('fn-a')]),
+      fetchFileContent: vi.fn().mockResolvedValue('name: fn-a\nruntime: go\nnamespace: demo\n'),
+    });
+    mockUseClusterService.mockReturnValue(clusterData());
+
+    render(
+      <MemoryRouter>
+        <FunctionsListPage />
+      </MemoryRouter>,
+    );
+
+    await screen.findByTestId('fn-name');
+
+    const refreshBtn = screen.getByRole('button', { name: 'Refresh' });
+    expect(refreshBtn.querySelector('[role="progressbar"]')).not.toBeInTheDocument();
+  });
+
+  it('shows spinner on refresh button only while a button-triggered refresh is in flight', async () => {
+    renderAuthenticated();
+    let resolveRepos: (value: unknown[]) => void;
+    const mockListRepos = vi.fn().mockImplementation(
+      () =>
+        new Promise((resolve) => {
+          resolveRepos = resolve;
+        }),
+    );
+    mockUseSourceControl.mockReturnValue({
+      listFunctionRepos: mockListRepos,
+      fetchFileContent: vi.fn().mockResolvedValue('name: fn-a\nruntime: go\nnamespace: demo\n'),
+    });
+    mockUseClusterService.mockReturnValue(clusterData());
+
+    render(
+      <MemoryRouter>
+        <FunctionsListPage />
+      </MemoryRouter>,
+    );
+
+    // Complete initial load
+    resolveRepos!([repoFixture('fn-a')]);
+    await screen.findByTestId('fn-name');
+
+    const refreshBtn = screen.getByRole('button', { name: 'Refresh' });
+
+    // Click refresh -- should show spinner
+    await userEvent.click(refreshBtn);
+    expect(refreshBtn.querySelector('[role="progressbar"]')).toBeInTheDocument();
+
+    // Resolve the refresh fetch -- spinner should disappear
+    resolveRepos!([repoFixture('fn-a')]);
+    await waitFor(() => {
+      expect(refreshBtn.querySelector('[role="progressbar"]')).not.toBeInTheDocument();
+    });
+  });
+
+  it('removes a deleted repo from the list after refresh', async () => {
+    renderAuthenticated();
+    const mockListRepos = vi
+      .fn()
+      .mockResolvedValueOnce([repoFixture('fn-a'), repoFixture('fn-b')])
+      .mockResolvedValueOnce([repoFixture('fn-a')]);
+    const mockFetchFile = vi
+      .fn()
+      .mockImplementation(
+        (repo: { name: string }) => `name: ${repo.name}\nruntime: go\nnamespace: demo\n`,
+      );
+    mockUseSourceControl.mockReturnValue({
+      listFunctionRepos: mockListRepos,
+      fetchFileContent: mockFetchFile,
+    });
+    mockUseClusterService.mockReturnValue(clusterData());
+
+    render(
+      <MemoryRouter>
+        <FunctionsListPage />
+      </MemoryRouter>,
+    );
+
+    // Initial load: both repos visible
+    const names = await screen.findAllByTestId('fn-name');
+    expect(names).toHaveLength(2);
+    expect(names[0]).toHaveTextContent('fn-a');
+    expect(names[1]).toHaveTextContent('fn-b');
+
+    // Click refresh (second call returns only fn-a)
+    await userEvent.click(screen.getByRole('button', { name: 'Refresh' }));
+
+    await waitFor(() => {
+      const refreshedNames = screen.getAllByTestId('fn-name');
+      expect(refreshedNames).toHaveLength(1);
+      expect(refreshedNames[0]).toHaveTextContent('fn-a');
+    });
+  });
 });