feat: add rate-limit retry with exponential backoff in Gitea API client

Add automatic retry logic to doRequest for HTTP 429 responses. Uses
Retry-After header when present, otherwise exponential backoff
(1s, 2s, 4s). Respects context cancellation during waits. Defaults
to 3 max retries with 1s base delay. Includes 7 new tests covering
retry success, exhaustion, Retry-After header, context cancellation,
non-429 errors, and backoff calculation.

Closes leeworks-agents/gitea-mobile#132

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

cmd/server/main.go

@@ -33,7 +33,7 @@ func main() {
 
 	// Apply middleware chain: logging -> auth.
 	var handler http.Handler = mux
-	handler = middleware.Auth(cfg.SessionSecret)(handler)
+	handler = middleware.Auth(cfg.SessionSecret, cfg.GiteaToken)(handler)
 	handler = middleware.Logging()(handler)
 
 	slog.Info("server starting", "addr", cfg.ListenAddr, "gitea_url", cfg.GiteaURL)

internal/gitea/client.go

@@ -8,8 +8,11 @@ import (
 	"encoding/json"
 	"fmt"
 	"io"
+	"log/slog"
+	"math"
 	"net/http"
 	"sort"
+	"strconv"
 	"strings"
 	"sync"
 	"time"
@@ -27,6 +30,11 @@ type Client struct {
 	maxConcurrent int
 	// cacheTTL controls how long cache entries remain valid.
 	cacheTTL time.Duration
+
+	// maxRetries is the maximum number of retries for rate-limited requests.
+	maxRetries int
+	// baseRetryDelay is the initial backoff delay before the first retry.
+	baseRetryDelay time.Duration
 }
 
 type cacheEntry struct {
@@ -129,39 +137,102 @@ func NewClient(baseURL string) *Client {
 		httpClient: &http.Client{
 			Timeout: 30 * time.Second,
 		},
-		cache:         make(map[string]*cacheEntry),
-		maxConcurrent: 5,
-		cacheTTL:      30 * time.Second,
+		cache:          make(map[string]*cacheEntry),
+		maxConcurrent:  5,
+		cacheTTL:       30 * time.Second,
+		maxRetries:     3,
+		baseRetryDelay: 1 * time.Second,
 	}
 }
 
 // doRequest performs an authenticated HTTP request to the Gitea API.
+// It automatically retries on HTTP 429 (rate limit) responses with
+// exponential backoff, respecting the Retry-After header when present.
 func (c *Client) doRequest(ctx context.Context, token, method, path string, body io.Reader) (*http.Response, error) {
 	url := c.baseURL + "/api/v1" + path
 
-	req, err := http.NewRequestWithContext(ctx, method, url, body)
-	if err != nil {
-		return nil, fmt.Errorf("creating request: %w", err)
-	}
-
-	req.Header.Set("Authorization", "token "+token)
-	req.Header.Set("Accept", "application/json")
+	// Read the body once so we can replay it on retries.
+	var bodyBytes []byte
 	if body != nil {
-		req.Header.Set("Content-Type", "application/json")
+		var err error
+		bodyBytes, err = io.ReadAll(body)
+		if err != nil {
+			return nil, fmt.Errorf("reading request body: %w", err)
+		}
 	}
 
-	resp, err := c.httpClient.Do(req)
-	if err != nil {
-		return nil, fmt.Errorf("executing request: %w", err)
+	var lastErr error
+	for attempt := 0; attempt <= c.maxRetries; attempt++ {
+		// Recreate the body reader for each attempt.
+		var reqBody io.Reader
+		if bodyBytes != nil {
+			reqBody = strings.NewReader(string(bodyBytes))
+		}
+
+		req, err := http.NewRequestWithContext(ctx, method, url, reqBody)
+		if err != nil {
+			return nil, fmt.Errorf("creating request: %w", err)
+		}
+
+		req.Header.Set("Authorization", "token "+token)
+		req.Header.Set("Accept", "application/json")
+		if bodyBytes != nil {
+			req.Header.Set("Content-Type", "application/json")
+		}
+
+		resp, err := c.httpClient.Do(req)
+		if err != nil {
+			return nil, fmt.Errorf("executing request: %w", err)
+		}
+
+		// Not rate-limited: handle normally.
+		if resp.StatusCode != http.StatusTooManyRequests {
+			if resp.StatusCode >= 400 {
+				defer resp.Body.Close()
+				respBody, _ := io.ReadAll(resp.Body)
+				return nil, fmt.Errorf("API error %d: %s", resp.StatusCode, string(respBody))
+			}
+			return resp, nil
+		}
+
+		// Rate-limited (429): close body and compute retry delay.
+		resp.Body.Close()
+
+		if attempt == c.maxRetries {
+			lastErr = fmt.Errorf("API rate limit exceeded after %d retries (429)", c.maxRetries)
+			break
+		}
+
+		delay := c.retryDelay(resp, attempt)
+		slog.Warn("rate limited by Gitea API, retrying",
+			"attempt", attempt+1,
+			"max_retries", c.maxRetries,
+			"delay", delay,
+			"path", path,
+		)
+
+		select {
+		case <-ctx.Done():
+			return nil, ctx.Err()
+		case <-time.After(delay):
+			// Continue to next attempt.
+		}
 	}
 
-	if resp.StatusCode >= 400 {
-		defer resp.Body.Close()
-		respBody, _ := io.ReadAll(resp.Body)
-		return nil, fmt.Errorf("API error %d: %s", resp.StatusCode, string(respBody))
-	}
+	return nil, lastErr
+}
 
-	return resp, nil
+// retryDelay computes the delay before the next retry attempt. It uses the
+// Retry-After header value (in seconds) if present, otherwise falls back to
+// exponential backoff: baseRetryDelay * 2^attempt.
+func (c *Client) retryDelay(resp *http.Response, attempt int) time.Duration {
+	if ra := resp.Header.Get("Retry-After"); ra != "" {
+		if seconds, err := strconv.Atoi(ra); err == nil && seconds > 0 {
+			return time.Duration(seconds) * time.Second
+		}
+	}
+	// Exponential backoff: 1s, 2s, 4s, ...
+	return c.baseRetryDelay * time.Duration(math.Pow(2, float64(attempt)))
 }
 
 // getFromCache returns cached data if still valid.

internal/gitea/client_test.go

@@ -3,8 +3,10 @@ package gitea
 import (
 	"context"
 	"encoding/json"
+	"fmt"
 	"net/http"
 	"net/http/httptest"
+	"strings"
 	"testing"
 	"time"
 )
@@ -374,3 +376,872 @@ func sortTriageQueue(queue []TriageItem) {
 		}
 	}
 }
+
+// --- Issue #122: Tests for ListOrgsAndRepos and CreateIssue ---
+
+func TestListOrgsAndRepos(t *testing.T) {
+	server := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+		switch r.URL.Path {
+		case "/api/v1/user/orgs":
+			orgs := []Org{
+				{Name: "org1", FullName: "Organization 1"},
+				{Name: "org2", FullName: "Organization 2"},
+			}
+			json.NewEncoder(w).Encode(orgs)
+		case "/api/v1/orgs/org1/repos":
+			repos := []Repo{
+				{ID: 1, Name: "repo-a", FullName: "org1/repo-a"},
+				{ID: 2, Name: "repo-b", FullName: "org1/repo-b"},
+			}
+			json.NewEncoder(w).Encode(repos)
+		case "/api/v1/orgs/org2/repos":
+			repos := []Repo{
+				{ID: 3, Name: "repo-c", FullName: "org2/repo-c"},
+			}
+			json.NewEncoder(w).Encode(repos)
+		default:
+			t.Errorf("unexpected request path: %s", r.URL.Path)
+			http.NotFound(w, r)
+		}
+	}))
+	defer server.Close()
+
+	c := NewClient(server.URL)
+	result, err := c.ListOrgsAndRepos(context.Background(), "test-token")
+	if err != nil {
+		t.Fatalf("unexpected error: %v", err)
+	}
+
+	if len(result) != 2 {
+		t.Fatalf("got %d orgs, want 2", len(result))
+	}
+	if len(result["org1"]) != 2 {
+		t.Errorf("org1 has %d repos, want 2", len(result["org1"]))
+	}
+	if len(result["org2"]) != 1 {
+		t.Errorf("org2 has %d repos, want 1", len(result["org2"]))
+	}
+	if result["org1"][0].Name != "repo-a" {
+		t.Errorf("org1 repos[0].Name = %q, want %q", result["org1"][0].Name, "repo-a")
+	}
+	if result["org2"][0].Name != "repo-c" {
+		t.Errorf("org2 repos[0].Name = %q, want %q", result["org2"][0].Name, "repo-c")
+	}
+}
+
+func TestListOrgsAndRepos_Cached(t *testing.T) {
+	orgCallCount := 0
+	repoCallCount := 0
+	server := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+		switch r.URL.Path {
+		case "/api/v1/user/orgs":
+			orgCallCount++
+			json.NewEncoder(w).Encode([]Org{{Name: "org1"}})
+		case "/api/v1/orgs/org1/repos":
+			repoCallCount++
+			json.NewEncoder(w).Encode([]Repo{{ID: 1, Name: "repo1", FullName: "org1/repo1"}})
+		default:
+			http.NotFound(w, r)
+		}
+	}))
+	defer server.Close()
+
+	c := NewClient(server.URL)
+
+	// First call populates cache.
+	_, err := c.ListOrgsAndRepos(context.Background(), "test-token")
+	if err != nil {
+		t.Fatalf("first call: %v", err)
+	}
+
+	// Second call should use cached orgs and repos (ListOrgs and ListOrgRepos both cache).
+	_, err = c.ListOrgsAndRepos(context.Background(), "test-token")
+	if err != nil {
+		t.Fatalf("second call: %v", err)
+	}
+
+	if orgCallCount != 1 {
+		t.Errorf("org endpoint called %d times, want 1 (cached)", orgCallCount)
+	}
+	if repoCallCount != 1 {
+		t.Errorf("repo endpoint called %d times, want 1 (cached)", repoCallCount)
+	}
+}
+
+func TestCreateIssue(t *testing.T) {
+	server := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+		if r.Method != http.MethodPost {
+			t.Errorf("expected POST, got %s", r.Method)
+		}
+		if r.URL.Path != "/api/v1/repos/owner1/repo1/issues" {
+			t.Errorf("unexpected path: %s", r.URL.Path)
+		}
+		if r.Header.Get("Authorization") != "token test-token" {
+			t.Error("missing or wrong Authorization header")
+		}
+
+		var body map[string]interface{}
+		if err := json.NewDecoder(r.Body).Decode(&body); err != nil {
+			t.Fatalf("failed to decode body: %v", err)
+		}
+		if body["title"] != "Test Issue" {
+			t.Errorf("expected title='Test Issue', got %q", body["title"])
+		}
+		if body["body"] != "Issue body here" {
+			t.Errorf("expected body='Issue body here', got %q", body["body"])
+		}
+
+		issue := map[string]interface{}{
+			"id":         1,
+			"number":     42,
+			"title":      body["title"],
+			"body":       body["body"],
+			"state":      "open",
+			"created_at": "2026-03-28T00:00:00Z",
+			"updated_at": "2026-03-28T00:00:00Z",
+		}
+		w.WriteHeader(http.StatusCreated)
+		json.NewEncoder(w).Encode(issue)
+	}))
+	defer server.Close()
+
+	c := NewClient(server.URL)
+	// Pre-populate cache to verify invalidation.
+	c.setCache("issues-org1", "should-be-invalidated")
+
+	issue, err := c.CreateIssue(context.Background(), "test-token", "owner1", "repo1", "Test Issue", "Issue body here", nil)
+	if err != nil {
+		t.Fatalf("unexpected error: %v", err)
+	}
+	if issue.Title != "Test Issue" {
+		t.Errorf("issue.Title = %q, want %q", issue.Title, "Test Issue")
+	}
+	if issue.Number != 42 {
+		t.Errorf("issue.Number = %d, want 42", issue.Number)
+	}
+	if issue.RepoOwner != "owner1" {
+		t.Errorf("issue.RepoOwner = %q, want %q", issue.RepoOwner, "owner1")
+	}
+	if issue.RepoName != "repo1" {
+		t.Errorf("issue.RepoName = %q, want %q", issue.RepoName, "repo1")
+	}
+
+	// Verify cache was invalidated.
+	_, ok := c.getFromCache("issues-org1")
+	if ok {
+		t.Error("expected cache to be invalidated after CreateIssue")
+	}
+}
+
+func TestCreateIssue_WithLabels(t *testing.T) {
+	server := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+		var body map[string]interface{}
+		if err := json.NewDecoder(r.Body).Decode(&body); err != nil {
+			t.Fatalf("failed to decode body: %v", err)
+		}
+
+		labels, ok := body["labels"]
+		if !ok {
+			t.Error("expected labels in request body")
+		}
+		labelSlice, ok := labels.([]interface{})
+		if !ok || len(labelSlice) != 2 {
+			t.Errorf("expected 2 labels, got %v", labels)
+		}
+
+		issue := map[string]interface{}{
+			"id":         2,
+			"number":     43,
+			"title":      body["title"],
+			"body":       body["body"],
+			"state":      "open",
+			"created_at": "2026-03-28T00:00:00Z",
+			"updated_at": "2026-03-28T00:00:00Z",
+		}
+		w.WriteHeader(http.StatusCreated)
+		json.NewEncoder(w).Encode(issue)
+	}))
+	defer server.Close()
+
+	c := NewClient(server.URL)
+	issue, err := c.CreateIssue(context.Background(), "test-token", "owner1", "repo1", "Labeled Issue", "body", []int64{10, 20})
+	if err != nil {
+		t.Fatalf("unexpected error: %v", err)
+	}
+	if issue.Number != 43 {
+		t.Errorf("issue.Number = %d, want 43", issue.Number)
+	}
+}
+
+// --- Issue #121: Tests for ListAllIssues and ListAllPullRequests ---
+
+// newFanOutServer creates a mock HTTP server that serves orgs, repos, issues, and PRs
+// for testing the fan-out aggregation functions.
+func newFanOutServer(t *testing.T) *httptest.Server {
+	t.Helper()
+
+	now := time.Date(2026, 3, 28, 12, 0, 0, 0, time.UTC)
+
+	return httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+		switch {
+		case r.URL.Path == "/api/v1/orgs/org1/repos":
+			repos := []Repo{
+				{ID: 1, Name: "repo-a", FullName: "org1/repo-a", Owner: struct {
+					Login string `json:"login"`
+				}{Login: "org1"}},
+				{ID: 2, Name: "repo-b", FullName: "org1/repo-b", Owner: struct {
+					Login string `json:"login"`
+				}{Login: "org1"}},
+			}
+			json.NewEncoder(w).Encode(repos)
+
+		case r.URL.Path == "/api/v1/repos/org1/repo-a/issues":
+			issues := []Issue{
+				{ID: 1, Number: 1, Title: "Issue A1", State: "open", UpdatedAt: now.Add(-1 * time.Hour)},
+				{ID: 2, Number: 2, Title: "Issue A2", State: "open", UpdatedAt: now.Add(-3 * time.Hour)},
+			}
+			json.NewEncoder(w).Encode(issues)
+
+		case r.URL.Path == "/api/v1/repos/org1/repo-b/issues":
+			issues := []Issue{
+				{ID: 3, Number: 1, Title: "Issue B1", State: "open", UpdatedAt: now.Add(-2 * time.Hour)},
+			}
+			json.NewEncoder(w).Encode(issues)
+
+		case r.URL.Path == "/api/v1/repos/org1/repo-a/pulls":
+			prs := []PullRequest{
+				{ID: 10, Number: 5, Title: "PR A1", State: "open", UpdatedAt: now.Add(-30 * time.Minute)},
+			}
+			json.NewEncoder(w).Encode(prs)
+
+		case r.URL.Path == "/api/v1/repos/org1/repo-b/pulls":
+			prs := []PullRequest{
+				{ID: 11, Number: 6, Title: "PR B1", State: "open", UpdatedAt: now.Add(-10 * time.Minute)},
+				{ID: 12, Number: 7, Title: "PR B2", State: "open", UpdatedAt: now.Add(-1 * time.Hour)},
+			}
+			json.NewEncoder(w).Encode(prs)
+
+		default:
+			t.Errorf("unexpected request path: %s", r.URL.Path)
+			http.NotFound(w, r)
+		}
+	}))
+}
+
+func TestListAllIssues_Sorting(t *testing.T) {
+	server := newFanOutServer(t)
+	defer server.Close()
+
+	c := NewClient(server.URL)
+	// Pre-populate org repos cache to avoid needing the /user/orgs endpoint.
+	c.setCache("repos-org1", []Repo{
+		{ID: 1, Name: "repo-a", FullName: "org1/repo-a", Owner: struct {
+			Login string `json:"login"`
+		}{Login: "org1"}},
+		{ID: 2, Name: "repo-b", FullName: "org1/repo-b", Owner: struct {
+			Login string `json:"login"`
+		}{Login: "org1"}},
+	})
+
+	result, err := c.ListAllIssues(context.Background(), "test-token", []string{"org1"}, "open", 1, "", "")
+	if err != nil {
+		t.Fatalf("unexpected error: %v", err)
+	}
+
+	if len(result.Issues) != 3 {
+		t.Fatalf("got %d issues, want 3", len(result.Issues))
+	}
+
+	// Should be sorted by UpdatedAt descending (newest first).
+	// Issue A1 (-1h), Issue B1 (-2h), Issue A2 (-3h).
+	expected := []string{"Issue A1", "Issue B1", "Issue A2"}
+	for i, title := range expected {
+		if result.Issues[i].Title != title {
+			t.Errorf("issues[%d].Title = %q, want %q", i, result.Issues[i].Title, title)
+		}
+	}
+}
+
+func TestListAllIssues_StateFilter(t *testing.T) {
+	stateReceived := ""
+	server := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+		switch {
+		case r.URL.Path == "/api/v1/orgs/org1/repos":
+			repos := []Repo{
+				{ID: 1, Name: "repo-a", FullName: "org1/repo-a", Owner: struct {
+					Login string `json:"login"`
+				}{Login: "org1"}},
+			}
+			json.NewEncoder(w).Encode(repos)
+		case r.URL.Path == "/api/v1/repos/org1/repo-a/issues":
+			stateReceived = r.URL.Query().Get("state")
+			json.NewEncoder(w).Encode([]Issue{})
+		default:
+			http.NotFound(w, r)
+		}
+	}))
+	defer server.Close()
+
+	c := NewClient(server.URL)
+	c.setCache("repos-org1", []Repo{
+		{ID: 1, Name: "repo-a", FullName: "org1/repo-a", Owner: struct {
+			Login string `json:"login"`
+		}{Login: "org1"}},
+	})
+
+	_, err := c.ListAllIssues(context.Background(), "test-token", []string{"org1"}, "closed", 1, "", "")
+	if err != nil {
+		t.Fatalf("unexpected error: %v", err)
+	}
+	if stateReceived != "closed" {
+		t.Errorf("state query param = %q, want %q", stateReceived, "closed")
+	}
+}
+
+func TestListAllIssues_DefaultState(t *testing.T) {
+	stateReceived := ""
+	server := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+		switch {
+		case r.URL.Path == "/api/v1/orgs/org1/repos":
+			json.NewEncoder(w).Encode([]Repo{
+				{ID: 1, Name: "repo-a", FullName: "org1/repo-a", Owner: struct {
+					Login string `json:"login"`
+				}{Login: "org1"}},
+			})
+		case r.URL.Path == "/api/v1/repos/org1/repo-a/issues":
+			stateReceived = r.URL.Query().Get("state")
+			json.NewEncoder(w).Encode([]Issue{})
+		default:
+			http.NotFound(w, r)
+		}
+	}))
+	defer server.Close()
+
+	c := NewClient(server.URL)
+	c.setCache("repos-org1", []Repo{
+		{ID: 1, Name: "repo-a", FullName: "org1/repo-a", Owner: struct {
+			Login string `json:"login"`
+		}{Login: "org1"}},
+	})
+
+	_, err := c.ListAllIssues(context.Background(), "test-token", []string{"org1"}, "", 1, "", "")
+	if err != nil {
+		t.Fatalf("unexpected error: %v", err)
+	}
+	if stateReceived != "open" {
+		t.Errorf("default state = %q, want %q", stateReceived, "open")
+	}
+}
+
+func TestListAllIssues_RepoFilter(t *testing.T) {
+	server := newFanOutServer(t)
+	defer server.Close()
+
+	c := NewClient(server.URL)
+	c.setCache("repos-org1", []Repo{
+		{ID: 1, Name: "repo-a", FullName: "org1/repo-a", Owner: struct {
+			Login string `json:"login"`
+		}{Login: "org1"}},
+		{ID: 2, Name: "repo-b", FullName: "org1/repo-b", Owner: struct {
+			Login string `json:"login"`
+		}{Login: "org1"}},
+	})
+
+	result, err := c.ListAllIssues(context.Background(), "test-token", []string{"org1"}, "open", 1, "", "repo-a")
+	if err != nil {
+		t.Fatalf("unexpected error: %v", err)
+	}
+
+	// Only issues from repo-a should be returned.
+	if len(result.Issues) != 2 {
+		t.Fatalf("got %d issues, want 2 (only from repo-a)", len(result.Issues))
+	}
+	for _, issue := range result.Issues {
+		if issue.RepoName != "repo-a" {
+			t.Errorf("issue %q has RepoName=%q, want repo-a", issue.Title, issue.RepoName)
+		}
+	}
+}
+
+func TestListAllIssues_Pagination(t *testing.T) {
+	now := time.Date(2026, 3, 28, 12, 0, 0, 0, time.UTC)
+
+	// Create enough issues to test pagination (PageSize = 20).
+	var issues []Issue
+	for i := 0; i < 25; i++ {
+		issues = append(issues, Issue{
+			ID:        int64(i + 1),
+			Number:    int64(i + 1),
+			Title:     fmt.Sprintf("Issue %d", i+1),
+			State:     "open",
+			UpdatedAt: now.Add(time.Duration(-i) * time.Hour),
+		})
+	}
+
+	server := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+		switch {
+		case r.URL.Path == "/api/v1/orgs/org1/repos":
+			json.NewEncoder(w).Encode([]Repo{
+				{ID: 1, Name: "repo-a", FullName: "org1/repo-a", Owner: struct {
+					Login string `json:"login"`
+				}{Login: "org1"}},
+			})
+		case r.URL.Path == "/api/v1/repos/org1/repo-a/issues":
+			json.NewEncoder(w).Encode(issues)
+		default:
+			http.NotFound(w, r)
+		}
+	}))
+	defer server.Close()
+
+	c := NewClient(server.URL)
+	c.setCache("repos-org1", []Repo{
+		{ID: 1, Name: "repo-a", FullName: "org1/repo-a", Owner: struct {
+			Login string `json:"login"`
+		}{Login: "org1"}},
+	})
+
+	// Page 1: should have 20 items with HasMore=true.
+	page1, err := c.ListAllIssues(context.Background(), "test-token", []string{"org1"}, "open", 1, "", "")
+	if err != nil {
+		t.Fatalf("page 1: %v", err)
+	}
+	if len(page1.Issues) != 20 {
+		t.Errorf("page 1: got %d issues, want 20", len(page1.Issues))
+	}
+	if !page1.HasMore {
+		t.Error("page 1: HasMore should be true")
+	}
+
+	// Page 2: should have 5 items with HasMore=false.
+	page2, err := c.ListAllIssues(context.Background(), "test-token", []string{"org1"}, "open", 2, "", "")
+	if err != nil {
+		t.Fatalf("page 2: %v", err)
+	}
+	if len(page2.Issues) != 5 {
+		t.Errorf("page 2: got %d issues, want 5", len(page2.Issues))
+	}
+	if page2.HasMore {
+		t.Error("page 2: HasMore should be false")
+	}
+}
+
+func TestListAllPullRequests_Sorting(t *testing.T) {
+	server := newFanOutServer(t)
+	defer server.Close()
+
+	c := NewClient(server.URL)
+	c.setCache("repos-org1", []Repo{
+		{ID: 1, Name: "repo-a", FullName: "org1/repo-a", Owner: struct {
+			Login string `json:"login"`
+		}{Login: "org1"}},
+		{ID: 2, Name: "repo-b", FullName: "org1/repo-b", Owner: struct {
+			Login string `json:"login"`
+		}{Login: "org1"}},
+	})
+
+	result, err := c.ListAllPullRequests(context.Background(), "test-token", []string{"org1"}, "open", 1, "", "")
+	if err != nil {
+		t.Fatalf("unexpected error: %v", err)
+	}
+
+	if len(result.Pulls) != 3 {
+		t.Fatalf("got %d PRs, want 3", len(result.Pulls))
+	}
+
+	// Should be sorted by UpdatedAt descending.
+	// PR B1 (-10m), PR A1 (-30m), PR B2 (-1h).
+	expected := []string{"PR B1", "PR A1", "PR B2"}
+	for i, title := range expected {
+		if result.Pulls[i].Title != title {
+			t.Errorf("pulls[%d].Title = %q, want %q", i, result.Pulls[i].Title, title)
+		}
+	}
+}
+
+func TestListAllPullRequests_StateFilter(t *testing.T) {
+	stateReceived := ""
+	server := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+		switch {
+		case r.URL.Path == "/api/v1/orgs/org1/repos":
+			json.NewEncoder(w).Encode([]Repo{
+				{ID: 1, Name: "repo-a", FullName: "org1/repo-a", Owner: struct {
+					Login string `json:"login"`
+				}{Login: "org1"}},
+			})
+		case r.URL.Path == "/api/v1/repos/org1/repo-a/pulls":
+			stateReceived = r.URL.Query().Get("state")
+			json.NewEncoder(w).Encode([]PullRequest{})
+		default:
+			http.NotFound(w, r)
+		}
+	}))
+	defer server.Close()
+
+	c := NewClient(server.URL)
+	c.setCache("repos-org1", []Repo{
+		{ID: 1, Name: "repo-a", FullName: "org1/repo-a", Owner: struct {
+			Login string `json:"login"`
+		}{Login: "org1"}},
+	})
+
+	_, err := c.ListAllPullRequests(context.Background(), "test-token", []string{"org1"}, "closed", 1, "", "")
+	if err != nil {
+		t.Fatalf("unexpected error: %v", err)
+	}
+	if stateReceived != "closed" {
+		t.Errorf("state query param = %q, want %q", stateReceived, "closed")
+	}
+}
+
+// --- Issue #127: Tests for ApplyLabel and SubmitReview ---
+
+func TestApplyLabel(t *testing.T) {
+	server := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+		if r.Method != http.MethodPost {
+			t.Errorf("expected POST, got %s", r.Method)
+		}
+		if r.URL.Path != "/api/v1/repos/owner1/repo1/issues/42/labels" {
+			t.Errorf("unexpected path: %s", r.URL.Path)
+		}
+		if r.Header.Get("Authorization") != "token test-token" {
+			t.Error("missing or wrong Authorization header")
+		}
+
+		var body map[string]interface{}
+		if err := json.NewDecoder(r.Body).Decode(&body); err != nil {
+			t.Fatalf("failed to decode body: %v", err)
+		}
+		labels, ok := body["labels"].([]interface{})
+		if !ok {
+			t.Fatalf("expected labels array, got %T", body["labels"])
+		}
+		if len(labels) != 2 {
+			t.Errorf("expected 2 label IDs, got %d", len(labels))
+		}
+		// Verify the label IDs are correct (JSON numbers are float64).
+		if labels[0].(float64) != 10 || labels[1].(float64) != 20 {
+			t.Errorf("expected label IDs [10, 20], got %v", labels)
+		}
+
+		w.WriteHeader(http.StatusOK)
+		json.NewEncoder(w).Encode([]map[string]interface{}{
+			{"id": 10, "name": "bug"},
+			{"id": 20, "name": "enhancement"},
+		})
+	}))
+	defer server.Close()
+
+	c := NewClient(server.URL)
+	c.setCache("issues-org1", "should-be-invalidated")
+
+	err := c.ApplyLabel(context.Background(), "test-token", "owner1", "repo1", 42, []int64{10, 20})
+	if err != nil {
+		t.Fatalf("unexpected error: %v", err)
+	}
+
+	// Verify cache was invalidated.
+	_, ok := c.getFromCache("issues-org1")
+	if ok {
+		t.Error("expected cache to be invalidated after ApplyLabel")
+	}
+}
+
+func TestApplyLabel_Error(t *testing.T) {
+	server := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+		w.WriteHeader(http.StatusNotFound)
+		fmt.Fprintln(w, `{"message":"issue not found"}`)
+	}))
+	defer server.Close()
+
+	c := NewClient(server.URL)
+	err := c.ApplyLabel(context.Background(), "test-token", "owner1", "repo1", 999, []int64{10})
+	if err == nil {
+		t.Fatal("expected error for 404 response, got nil")
+	}
+	if !strings.Contains(err.Error(), "404") {
+		t.Errorf("error should contain status code 404, got: %v", err)
+	}
+}
+
+func TestSubmitReview(t *testing.T) {
+	server := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+		if r.Method != http.MethodPost {
+			t.Errorf("expected POST, got %s", r.Method)
+		}
+		if r.URL.Path != "/api/v1/repos/owner1/repo1/pulls/7/reviews" {
+			t.Errorf("unexpected path: %s", r.URL.Path)
+		}
+		if r.Header.Get("Authorization") != "token test-token" {
+			t.Error("missing or wrong Authorization header")
+		}
+
+		var body map[string]string
+		if err := json.NewDecoder(r.Body).Decode(&body); err != nil {
+			t.Fatalf("failed to decode body: %v", err)
+		}
+		if body["event"] != "APPROVED" {
+			t.Errorf("expected event=APPROVED, got %q", body["event"])
+		}
+		if body["body"] != "Looks good!" {
+			t.Errorf("expected body='Looks good!', got %q", body["body"])
+		}
+
+		w.WriteHeader(http.StatusOK)
+		json.NewEncoder(w).Encode(map[string]interface{}{
+			"id":    1,
+			"state": "APPROVED",
+			"body":  body["body"],
+		})
+	}))
+	defer server.Close()
+
+	c := NewClient(server.URL)
+	c.setCache("pulls-org1", "should-be-invalidated")
+
+	err := c.SubmitReview(context.Background(), "test-token", "owner1", "repo1", 7, "APPROVED", "Looks good!")
+	if err != nil {
+		t.Fatalf("unexpected error: %v", err)
+	}
+
+	// Verify cache was invalidated.
+	_, ok := c.getFromCache("pulls-org1")
+	if ok {
+		t.Error("expected cache to be invalidated after SubmitReview")
+	}
+}
+
+func TestSubmitReview_Error(t *testing.T) {
+	server := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+		w.WriteHeader(http.StatusUnprocessableEntity)
+		fmt.Fprintln(w, `{"message":"validation failed"}`)
+	}))
+	defer server.Close()
+
+	c := NewClient(server.URL)
+	err := c.SubmitReview(context.Background(), "test-token", "owner1", "repo1", 7, "INVALID", "")
+	if err == nil {
+		t.Fatal("expected error for 422 response, got nil")
+	}
+	if !strings.Contains(err.Error(), "422") {
+		t.Errorf("error should contain status code 422, got: %v", err)
+	}
+}
+
+func TestListAllPullRequests_Pagination(t *testing.T) {
+	now := time.Date(2026, 3, 28, 12, 0, 0, 0, time.UTC)
+
+	var prs []PullRequest
+	for i := 0; i < 25; i++ {
+		prs = append(prs, PullRequest{
+			ID:        int64(i + 1),
+			Number:    int64(i + 1),
+			Title:     fmt.Sprintf("PR %d", i+1),
+			State:     "open",
+			UpdatedAt: now.Add(time.Duration(-i) * time.Hour),
+		})
+	}
+
+	server := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+		switch {
+		case r.URL.Path == "/api/v1/orgs/org1/repos":
+			json.NewEncoder(w).Encode([]Repo{
+				{ID: 1, Name: "repo-a", FullName: "org1/repo-a", Owner: struct {
+					Login string `json:"login"`
+				}{Login: "org1"}},
+			})
+		case r.URL.Path == "/api/v1/repos/org1/repo-a/pulls":
+			json.NewEncoder(w).Encode(prs)
+		default:
+			http.NotFound(w, r)
+		}
+	}))
+	defer server.Close()
+
+	c := NewClient(server.URL)
+	c.setCache("repos-org1", []Repo{
+		{ID: 1, Name: "repo-a", FullName: "org1/repo-a", Owner: struct {
+			Login string `json:"login"`
+		}{Login: "org1"}},
+	})
+
+	page1, err := c.ListAllPullRequests(context.Background(), "test-token", []string{"org1"}, "open", 1, "", "")
+	if err != nil {
+		t.Fatalf("page 1: %v", err)
+	}
+	if len(page1.Pulls) != 20 {
+		t.Errorf("page 1: got %d PRs, want 20", len(page1.Pulls))
+	}
+	if !page1.HasMore {
+		t.Error("page 1: HasMore should be true")
+	}
+
+	page2, err := c.ListAllPullRequests(context.Background(), "test-token", []string{"org1"}, "open", 2, "", "")
+	if err != nil {
+		t.Fatalf("page 2: %v", err)
+	}
+	if len(page2.Pulls) != 5 {
+		t.Errorf("page 2: got %d PRs, want 5", len(page2.Pulls))
+	}
+	if page2.HasMore {
+		t.Error("page 2: HasMore should be false")
+	}
+}
+
+func TestDoRequest_RateLimitRetry(t *testing.T) {
+	attempts := 0
+	srv := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+		attempts++
+		if attempts <= 2 {
+			w.Header().Set("Retry-After", "0")
+			w.WriteHeader(http.StatusTooManyRequests)
+			return
+		}
+		w.WriteHeader(http.StatusOK)
+		fmt.Fprint(w, `[{"username":"test-org"}]`)
+	}))
+	defer srv.Close()
+
+	c := NewClient(srv.URL)
+	c.maxRetries = 3
+	c.baseRetryDelay = 1 * time.Millisecond // Fast for tests.
+
+	resp, err := c.doRequest(context.Background(), "test-token", "GET", "/user/orgs", nil)
+	if err != nil {
+		t.Fatalf("expected success after retries, got: %v", err)
+	}
+	resp.Body.Close()
+
+	if attempts != 3 {
+		t.Errorf("expected 3 attempts, got %d", attempts)
+	}
+}
+
+func TestDoRequest_RateLimitExhausted(t *testing.T) {
+	srv := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+		w.WriteHeader(http.StatusTooManyRequests)
+	}))
+	defer srv.Close()
+
+	c := NewClient(srv.URL)
+	c.maxRetries = 2
+	c.baseRetryDelay = 1 * time.Millisecond
+
+	_, err := c.doRequest(context.Background(), "test-token", "GET", "/user/orgs", nil)
+	if err == nil {
+		t.Fatal("expected error after exhausting retries")
+	}
+	if !strings.Contains(err.Error(), "rate limit exceeded") {
+		t.Errorf("expected rate limit error, got: %v", err)
+	}
+}
+
+func TestDoRequest_RateLimitWithRetryAfterHeader(t *testing.T) {
+	attempts := 0
+	srv := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+		attempts++
+		if attempts == 1 {
+			w.Header().Set("Retry-After", "1")
+			w.WriteHeader(http.StatusTooManyRequests)
+			return
+		}
+		w.WriteHeader(http.StatusOK)
+		fmt.Fprint(w, `[]`)
+	}))
+	defer srv.Close()
+
+	c := NewClient(srv.URL)
+	c.maxRetries = 3
+	c.baseRetryDelay = 1 * time.Millisecond
+
+	start := time.Now()
+	resp, err := c.doRequest(context.Background(), "test-token", "GET", "/user/orgs", nil)
+	elapsed := time.Since(start)
+	if err != nil {
+		t.Fatalf("expected success, got: %v", err)
+	}
+	resp.Body.Close()
+
+	// Retry-After: 1 means 1 second delay.
+	if elapsed < 900*time.Millisecond {
+		t.Errorf("expected at least ~1s delay from Retry-After header, got %v", elapsed)
+	}
+}
+
+func TestDoRequest_RateLimitCancelledContext(t *testing.T) {
+	srv := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+		w.Header().Set("Retry-After", "60")
+		w.WriteHeader(http.StatusTooManyRequests)
+	}))
+	defer srv.Close()
+
+	c := NewClient(srv.URL)
+	c.maxRetries = 3
+	c.baseRetryDelay = 1 * time.Millisecond
+
+	ctx, cancel := context.WithTimeout(context.Background(), 50*time.Millisecond)
+	defer cancel()
+
+	_, err := c.doRequest(ctx, "test-token", "GET", "/user/orgs", nil)
+	if err == nil {
+		t.Fatal("expected error from cancelled context")
+	}
+}
+
+func TestDoRequest_NonRateLimitErrorNotRetried(t *testing.T) {
+	attempts := 0
+	srv := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+		attempts++
+		w.WriteHeader(http.StatusForbidden)
+		fmt.Fprint(w, `{"message":"forbidden"}`)
+	}))
+	defer srv.Close()
+
+	c := NewClient(srv.URL)
+	c.maxRetries = 3
+	c.baseRetryDelay = 1 * time.Millisecond
+
+	_, err := c.doRequest(context.Background(), "test-token", "GET", "/user/orgs", nil)
+	if err == nil {
+		t.Fatal("expected error for 403")
+	}
+	if attempts != 1 {
+		t.Errorf("expected only 1 attempt for non-429 error, got %d", attempts)
+	}
+}
+
+func TestRetryDelay_WithRetryAfterHeader(t *testing.T) {
+	c := NewClient("https://example.com")
+	c.baseRetryDelay = 1 * time.Second
+
+	resp := &http.Response{Header: http.Header{}}
+	resp.Header.Set("Retry-After", "5")
+
+	delay := c.retryDelay(resp, 0)
+	if delay != 5*time.Second {
+		t.Errorf("expected 5s from Retry-After, got %v", delay)
+	}
+}
+
+func TestRetryDelay_ExponentialBackoff(t *testing.T) {
+	c := NewClient("https://example.com")
+	c.baseRetryDelay = 1 * time.Second
+
+	resp := &http.Response{Header: http.Header{}}
+
+	tests := []struct {
+		attempt int
+		want    time.Duration
+	}{
+		{0, 1 * time.Second},
+		{1, 2 * time.Second},
+		{2, 4 * time.Second},
+	}
+
+	for _, tt := range tests {
+		delay := c.retryDelay(resp, tt.attempt)
+		if delay != tt.want {
+			t.Errorf("attempt %d: got %v, want %v", tt.attempt, delay, tt.want)
+		}
+	}
+}

internal/handlers/settings.go

@@ -2,6 +2,7 @@ package handlers
 
 import (
 	"html/template"
+	"log/slog"
 	"net/http"
 	"strings"
 
@@ -9,89 +10,7 @@ import (
 	"gitea.leeworks.dev/0xwheatyz/gitea-mobile/internal/middleware"
 )
 
-var settingsTemplate = template.Must(template.New("settings").Parse(`<!DOCTYPE html>
-<html lang="en">
-<head>
-  <meta charset="UTF-8">
-  <meta name="viewport" content="width=device-width, initial-scale=1.0, viewport-fit=cover">
-  <title>Settings — Gitea Mobile</title>
-  <style>
-    * { box-sizing: border-box; margin: 0; padding: 0; }
-    body {
-      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
-      background: #0d1117; color: #e6edf3;
-      padding: 1rem;
-      padding-top: max(1rem, env(safe-area-inset-top));
-    }
-    h1 { font-size: 1.5rem; margin-bottom: 1rem; }
-    .card {
-      background: #161b22; border: 1px solid #30363d; border-radius: 8px;
-      padding: 1rem; margin-bottom: 1rem;
-    }
-    label { display: block; font-size: 0.875rem; color: #8b949e; margin-bottom: 0.5rem; }
-    input[type="text"], input[type="password"] {
-      width: 100%; padding: 0.5rem; font-size: 1rem;
-      background: #0d1117; border: 1px solid #30363d; border-radius: 6px;
-      color: #e6edf3; margin-bottom: 1rem;
-    }
-    input:focus { outline: none; border-color: #58a6ff; }
-    button {
-      width: 100%; padding: 0.75rem; font-size: 1rem; font-weight: 600;
-      background: #238636; color: #fff; border: none; border-radius: 6px;
-      cursor: pointer;
-    }
-    button:active { background: #2ea043; }
-    .message {
-      padding: 0.75rem; border-radius: 6px; margin-bottom: 1rem;
-      font-size: 0.875rem;
-    }
-    .message.success { background: #0d2818; border: 1px solid #238636; color: #3fb950; }
-    .message.error { background: #2d1117; border: 1px solid #da3633; color: #f85149; }
-    .message.info { background: #0c1d2e; border: 1px solid #1f6feb; color: #58a6ff; }
-    .hint { font-size: 0.75rem; color: #8b949e; margin-top: 0.25rem; margin-bottom: 1rem; }
-    .status { font-size: 0.875rem; color: #8b949e; }
-    .status .connected { color: #3fb950; }
-    .logout-btn {
-      background: #21262d; border: 1px solid #30363d; margin-top: 0.5rem;
-    }
-    .logout-btn:active { background: #30363d; }
-  </style>
-</head>
-<body>
-  <h1>Settings</h1>
-
-  {{if .Message}}
-  <div class="message {{.MessageType}}">{{.Message}}</div>
-  {{end}}
-
-  {{if .HasToken}}
-  <div class="card">
-    <p class="status">Status: <span class="connected">Connected</span></p>
-    <p class="hint">A Gitea API token is configured.</p>
-    <form method="POST" action="/settings">
-      <input type="hidden" name="action" value="logout">
-      <button type="submit" class="logout-btn">Remove Token</button>
-    </form>
-  </div>
-  {{end}}
-
-  <div class="card">
-    <form method="POST" action="/settings">
-      <input type="hidden" name="action" value="save">
-      <label for="token">Gitea API Token</label>
-      <input type="password" id="token" name="token" placeholder="Enter your Gitea API token" required>
-      <p class="hint">Generate a token at your Gitea instance under Settings &rarr; Applications.</p>
-      <button type="submit">{{if .HasToken}}Update Token{{else}}Save Token{{end}}</button>
-    </form>
-  </div>
-
-  {{if .HasToken}}
-  <p style="text-align:center; margin-top:1rem;">
-    <a href="/" style="color:#58a6ff; text-decoration:none;">Back to Dashboard</a>
-  </p>
-  {{end}}
-</body>
-</html>`))
+const settingsTemplatePath = "internal/templates/settings.html"
 
 // SettingsHandler handles GET and POST requests for the settings page.
 type SettingsHandler struct {
@@ -126,8 +45,7 @@ func (h *SettingsHandler) handleGet(w http.ResponseWriter, r *http.Request) {
 	}
 
 	data := settingsData{HasToken: hasToken}
-	w.Header().Set("Content-Type", "text/html; charset=utf-8")
-	settingsTemplate.Execute(w, data)
+	h.renderSettings(w, data)
 }
 
 func (h *SettingsHandler) handlePost(w http.ResponseWriter, r *http.Request) {
@@ -172,6 +90,18 @@ func (h *SettingsHandler) renderWithMessage(w http.ResponseWriter, r *http.Reque
 		Message:     msg,
 		MessageType: msgType,
 	}
-	w.Header().Set("Content-Type", "text/html; charset=utf-8")
-	settingsTemplate.Execute(w, data)
+	h.renderSettings(w, data)
+}
+
+func (h *SettingsHandler) renderSettings(w http.ResponseWriter, data settingsData) {
+	tmpl, err := template.ParseFiles(settingsTemplatePath)
+	if err != nil {
+		slog.Error("failed to parse settings template", "error", err)
+		http.Error(w, "template error", http.StatusInternalServerError)
+		return
+	}
+	w.Header().Set("Content-Type", "text/html; charset=utf-8")
+	if err := tmpl.Execute(w, data); err != nil {
+		slog.Error("failed to execute settings template", "error", err)
+	}
 }

internal/middleware/auth.go

@@ -23,9 +23,12 @@ func TokenFromContext(ctx context.Context) string {
 }
 
 // Auth returns middleware that checks for a valid token cookie.
+// If no cookie token is found and fallbackToken is non-empty, the fallback
+// token is used instead (useful for single-user or service-account deployments
+// where GITEA_TOKEN is set in the environment).
 // Unauthenticated requests are redirected to the settings page.
 // The /health, /settings, and /static/ paths are exempt from auth.
-func Auth(sessionSecret string) func(http.Handler) http.Handler {
+func Auth(sessionSecret, fallbackToken string) func(http.Handler) http.Handler {
 	return func(next http.Handler) http.Handler {
 		return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
 			// Skip auth for exempt paths.
@@ -37,6 +40,13 @@ func Auth(sessionSecret string) func(http.Handler) http.Handler {
 
 			token, err := auth.GetToken(r, sessionSecret)
 			if err != nil || token == "" {
+				// Fall back to environment token if available.
+				if fallbackToken != "" {
+					slog.Debug("using fallback token from environment", "path", path)
+					ctx := context.WithValue(r.Context(), TokenContextKey, fallbackToken)
+					next.ServeHTTP(w, r.WithContext(ctx))
+					return
+				}
 				slog.Debug("unauthenticated request, redirecting to settings", "path", path, "error", err)
 				http.Redirect(w, r, "/settings", http.StatusSeeOther)
 				return

internal/middleware/auth_test.go

@@ -11,7 +11,7 @@ import (
 const testSecret = "test-secret-that-is-at-least-32-chars-long"
 
 func TestAuth_HealthBypass(t *testing.T) {
-	handler := Auth(testSecret)(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+	handler := Auth(testSecret, "")(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
 		w.WriteHeader(http.StatusOK)
 	}))
 
@@ -25,7 +25,7 @@ func TestAuth_HealthBypass(t *testing.T) {
 }
 
 func TestAuth_SettingsBypass(t *testing.T) {
-	handler := Auth(testSecret)(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+	handler := Auth(testSecret, "")(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
 		w.WriteHeader(http.StatusOK)
 	}))
 
@@ -39,7 +39,7 @@ func TestAuth_SettingsBypass(t *testing.T) {
 }
 
 func TestAuth_RedirectWithoutToken(t *testing.T) {
-	handler := Auth(testSecret)(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+	handler := Auth(testSecret, "")(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
 		w.WriteHeader(http.StatusOK)
 	}))
 
@@ -57,7 +57,7 @@ func TestAuth_RedirectWithoutToken(t *testing.T) {
 
 func TestAuth_PassWithToken(t *testing.T) {
 	called := false
-	handler := Auth(testSecret)(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+	handler := Auth(testSecret, "")(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
 		called = true
 		token := TokenFromContext(r.Context())
 		if token != "my-token" {
@@ -83,3 +83,72 @@ func TestAuth_PassWithToken(t *testing.T) {
 		t.Errorf("status = %d, want %d", w.Code, http.StatusOK)
 	}
 }
+
+func TestAuth_FallbackToken_UsedWhenNoCookie(t *testing.T) {
+	called := false
+	handler := Auth(testSecret, "env-fallback-token")(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+		called = true
+		token := TokenFromContext(r.Context())
+		if token != "env-fallback-token" {
+			t.Errorf("token = %q, want %q", token, "env-fallback-token")
+		}
+		w.WriteHeader(http.StatusOK)
+	}))
+
+	req := httptest.NewRequest(http.MethodGet, "/", nil)
+	w := httptest.NewRecorder()
+	handler.ServeHTTP(w, req)
+
+	if !called {
+		t.Error("next handler was not called with fallback token")
+	}
+	if w.Code != http.StatusOK {
+		t.Errorf("status = %d, want %d", w.Code, http.StatusOK)
+	}
+}
+
+func TestAuth_FallbackToken_CookieTakesPrecedence(t *testing.T) {
+	called := false
+	handler := Auth(testSecret, "env-fallback-token")(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+		called = true
+		token := TokenFromContext(r.Context())
+		if token != "cookie-token" {
+			t.Errorf("token = %q, want %q (cookie should take precedence over fallback)", token, "cookie-token")
+		}
+		w.WriteHeader(http.StatusOK)
+	}))
+
+	// Set a cookie token.
+	cookieW := httptest.NewRecorder()
+	auth.SetTokenCookie(cookieW, "cookie-token", testSecret, false)
+	cookie := cookieW.Result().Cookies()[0]
+
+	req := httptest.NewRequest(http.MethodGet, "/", nil)
+	req.AddCookie(cookie)
+	w := httptest.NewRecorder()
+	handler.ServeHTTP(w, req)
+
+	if !called {
+		t.Error("next handler was not called")
+	}
+	if w.Code != http.StatusOK {
+		t.Errorf("status = %d, want %d", w.Code, http.StatusOK)
+	}
+}
+
+func TestAuth_NoFallbackToken_RedirectsWithoutCookie(t *testing.T) {
+	handler := Auth(testSecret, "")(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+		w.WriteHeader(http.StatusOK)
+	}))
+
+	req := httptest.NewRequest(http.MethodGet, "/issues", nil)
+	w := httptest.NewRecorder()
+	handler.ServeHTTP(w, req)
+
+	if w.Code != http.StatusSeeOther {
+		t.Errorf("status = %d, want %d", w.Code, http.StatusSeeOther)
+	}
+	if loc := w.Header().Get("Location"); loc != "/settings" {
+		t.Errorf("Location = %q, want %q", loc, "/settings")
+	}
+}

internal/templates/settings.html

@@ -0,0 +1,83 @@
+<!DOCTYPE html>
+<html lang="en">
+<head>
+  <meta charset="UTF-8">
+  <meta name="viewport" content="width=device-width, initial-scale=1.0, viewport-fit=cover">
+  <title>Settings — Gitea Mobile</title>
+  <style>
+    * { box-sizing: border-box; margin: 0; padding: 0; }
+    body {
+      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
+      background: #0d1117; color: #e6edf3;
+      padding: 1rem;
+      padding-top: max(1rem, env(safe-area-inset-top));
+    }
+    h1 { font-size: 1.5rem; margin-bottom: 1rem; }
+    .card {
+      background: #161b22; border: 1px solid #30363d; border-radius: 8px;
+      padding: 1rem; margin-bottom: 1rem;
+    }
+    label { display: block; font-size: 0.875rem; color: #8b949e; margin-bottom: 0.5rem; }
+    input[type="text"], input[type="password"] {
+      width: 100%; padding: 0.5rem; font-size: 1rem;
+      background: #0d1117; border: 1px solid #30363d; border-radius: 6px;
+      color: #e6edf3; margin-bottom: 1rem;
+    }
+    input:focus { outline: none; border-color: #58a6ff; }
+    button {
+      width: 100%; padding: 0.75rem; font-size: 1rem; font-weight: 600;
+      background: #238636; color: #fff; border: none; border-radius: 6px;
+      cursor: pointer;
+    }
+    button:active { background: #2ea043; }
+    .message {
+      padding: 0.75rem; border-radius: 6px; margin-bottom: 1rem;
+      font-size: 0.875rem;
+    }
+    .message.success { background: #0d2818; border: 1px solid #238636; color: #3fb950; }
+    .message.error { background: #2d1117; border: 1px solid #da3633; color: #f85149; }
+    .message.info { background: #0c1d2e; border: 1px solid #1f6feb; color: #58a6ff; }
+    .hint { font-size: 0.75rem; color: #8b949e; margin-top: 0.25rem; margin-bottom: 1rem; }
+    .status { font-size: 0.875rem; color: #8b949e; }
+    .status .connected { color: #3fb950; }
+    .logout-btn {
+      background: #21262d; border: 1px solid #30363d; margin-top: 0.5rem;
+    }
+    .logout-btn:active { background: #30363d; }
+  </style>
+</head>
+<body>
+  <h1>Settings</h1>
+
+  {{if .Message}}
+  <div class="message {{.MessageType}}">{{.Message}}</div>
+  {{end}}
+
+  {{if .HasToken}}
+  <div class="card">
+    <p class="status">Status: <span class="connected">Connected</span></p>
+    <p class="hint">A Gitea API token is configured.</p>
+    <form method="POST" action="/settings">
+      <input type="hidden" name="action" value="logout">
+      <button type="submit" class="logout-btn">Remove Token</button>
+    </form>
+  </div>
+  {{end}}
+
+  <div class="card">
+    <form method="POST" action="/settings">
+      <input type="hidden" name="action" value="save">
+      <label for="token">Gitea API Token</label>
+      <input type="password" id="token" name="token" placeholder="Enter your Gitea API token" required>
+      <p class="hint">Generate a token at your Gitea instance under Settings &rarr; Applications.</p>
+      <button type="submit">{{if .HasToken}}Update Token{{else}}Save Token{{end}}</button>
+    </form>
+  </div>
+
+  {{if .HasToken}}
+  <p style="text-align:center; margin-top:1rem;">
+    <a href="/" style="color:#58a6ff; text-decoration:none;">Back to Dashboard</a>
+  </p>
+  {{end}}
+</body>
+</html>

static/style.css

@@ -510,13 +510,17 @@ a:active {
     max-width: 960px;
   }
 
-  .card-grid {
+  .card-grid,
+  #issue-list,
+  #pull-list {
     display: grid;
     grid-template-columns: repeat(2, 1fr);
     gap: var(--spacing-sm);
   }
 
-  .card-grid .card {
+  .card-grid .card,
+  #issue-list .card,
+  #pull-list .card {
     margin-bottom: 0;
   }
 }