fixes

README.md

@@ -336,6 +336,8 @@ to Docker or stored in the image.
 - `OTELLOG_PATH` - path to the persistent telemetry log file (default
   `otel-agent.log`). Only used when ClickHouse is not configured.
 - `OTEL_SOURCEMAP_KEY` - shared key required to upload source maps.
+- `OTEL_ISSUE_STATUS_PATH` - file that keeps resolved/ignored issue decisions across restarts when ClickHouse is not used (default: next to `OTELLOG_PATH`).
+- `OTEL_TODOS_PATH` - file for todos filed via `otel-todo.js` when ClickHouse is not used (default: next to `OTELLOG_PATH`).
 - `OTEL_SOURCEMAP_CACHE_MB` - size budget (on-disk MB, default 64) for maps kept
   parsed in memory; maps are indexed at start and parsed lazily on first use.
 - `OTEL_SOURCEMAP_DIR` - directory for uploaded release source maps (default

cmd/server/main.go

@@ -8,6 +8,7 @@ import (
 	"net/http"
 	"net/http/pprof"
 	"os"
+	"path/filepath"
 	"strings"
 
 	"git.tornberg.me/go-otel/internal/abuseipdb"
@@ -18,6 +19,7 @@ import (
 	"git.tornberg.me/go-otel/internal/geoip"
 	"git.tornberg.me/go-otel/internal/honeypot"
 	"git.tornberg.me/go-otel/internal/investigation"
+	"git.tornberg.me/go-otel/internal/issues"
 	kube "git.tornberg.me/go-otel/internal/kubernetes"
 	"git.tornberg.me/go-otel/internal/prometheus"
 	"git.tornberg.me/go-otel/internal/sourcemaps"
@@ -185,6 +187,18 @@ func withCORS(next http.HandlerFunc) http.HandlerFunc {
 	}
 }
 
+// dataPath resolves a small state file: the env override, else next to the
+// telemetry log (a mounted volume in the cluster), else the working directory.
+func dataPath(env, name string) string {
+	if p := os.Getenv(env); p != "" {
+		return p
+	}
+	if lp := os.Getenv("OTELLOG_PATH"); lp != "" {
+		return filepath.Join(filepath.Dir(lp), name)
+	}
+	return name
+}
+
 // setupStore returns the telemetry store: ClickHouse when OTEL_CLICKHOUSE_ADDR
 // is set (host:port, native protocol), otherwise the JSONL file store.
 func setupStore(ctx context.Context) storage.Store {
@@ -295,11 +309,7 @@ func main() {
 		}
 	}
 	if todoStore == nil {
-		path := os.Getenv("OTEL_TODOS_PATH")
+		if st, err := todos.NewFileStore(dataPath("OTEL_TODOS_PATH", "otel-todos.jsonl")); err != nil {
-		if path == "" {
-			path = "otel-todos.jsonl"
-		}
-		if st, err := todos.NewFileStore(path); err != nil {
 			log.Printf("todos disabled: %v", err)
 		} else {
 			todoStore = st
@@ -308,6 +318,26 @@ func main() {
 	if todoStore != nil {
 		coll.SetTodoStore(todoStore)
 	}
+	var statusStore issues.StatusStore
+	if chStore, ok := store.(*storage.ClickHouseStore); ok {
+		if st, err := issues.NewClickHouseStatusStore(context.Background(), chStore.Conn(), chStore.Database()); err != nil {
+			log.Printf("issue status: clickhouse unavailable, using file store: %v", err)
+		} else {
+			statusStore = st
+		}
+	}
+	if statusStore == nil {
+		if st, err := issues.NewFileStatusStore(dataPath("OTEL_ISSUE_STATUS_PATH", "otel-issue-status.json")); err != nil {
+			log.Printf("issue status will not be persisted: %v", err)
+		} else {
+			statusStore = st
+		}
+	}
+	if statusStore != nil {
+		if err := coll.SetIssueStatusStore(context.Background(), statusStore); err != nil {
+			log.Printf("failed to load issue status: %v", err)
+		}
+	}
 	investigator := investigation.NewHandler(investigation.ConfigFromEnv(), investigationStore)
 	abuse := abuseipdb.NewHandler(abuseipdb.ConfigFromEnv())
 
@@ -409,6 +439,7 @@ func main() {
 	uiMux.Handle("GET /api/issues/{id}/similar", oidcAuth.RequireAuth(http.HandlerFunc(coll.HandleIssueSimilar)))
 	uiMux.Handle("POST /api/issues/{id}/similar", oidcAuth.RequireAuth(http.HandlerFunc(coll.HandleSimilarityFeedback)))
 	uiMux.Handle("GET /api/todos", oidcAuth.RequireAuth(http.HandlerFunc(coll.HandleTodoList)))
+	uiMux.Handle("PATCH /api/todos/{id}", oidcAuth.RequireAuth(http.HandlerFunc(coll.HandleTodoUpdate)))
 	uiMux.Handle("GET /api/patterns", oidcAuth.RequireAuth(http.HandlerFunc(coll.HandlePatterns)))
 	uiMux.Handle("GET /api/topology", oidcAuth.RequireAuth(http.HandlerFunc(topo.HandleTopology)))
 	uiMux.Handle("GET /api/rollouts", oidcAuth.RequireAuth(http.HandlerFunc(coll.HandleRollouts)))

internal/collector/collector.go

@@ -222,6 +222,11 @@ func (c *Collector) SetIssueStatus(id, status string) (issues.Issue, bool) {
 	return c.issues.SetStatus(id, status)
 }
 
+// SetIssueStatusStore makes resolved/ignored decisions survive restarts.
+func (c *Collector) SetIssueStatusStore(ctx context.Context, store issues.StatusStore) error {
+	return c.issues.SetStatusStore(ctx, store)
+}
+
 func (c *Collector) SimilarIssues(id string, limit int) ([]issues.SimilarIssue, bool) {
 	return c.issues.Similar(id, limit)
 }

internal/collector/todos.go

@@ -116,3 +116,30 @@ func (c *Collector) HandleTodoList(w http.ResponseWriter, r *http.Request) {
 	w.Header().Set("Content-Type", "application/json")
 	_ = json.NewEncoder(w).Encode(items)
 }
+
+// HandleTodoUpdate marks a todo done or open: PATCH /api/todos/{id} {"done": bool}.
+func (c *Collector) HandleTodoUpdate(w http.ResponseWriter, r *http.Request) {
+	if c.todoStore == nil {
+		http.Error(w, "todos not enabled", http.StatusServiceUnavailable)
+		return
+	}
+	var req struct {
+		Done *bool `json:"done"`
+	}
+	if err := json.NewDecoder(http.MaxBytesReader(w, r.Body, 1024)).Decode(&req); err != nil || req.Done == nil {
+		http.Error(w, "body must be {\"done\": true|false}", http.StatusBadRequest)
+		return
+	}
+	t, ok, err := c.todoStore.SetDone(r.Context(), r.PathValue("id"), *req.Done)
+	if err != nil {
+		log.Printf("failed to update todo: %v", err)
+		http.Error(w, "failed to update todo", http.StatusInternalServerError)
+		return
+	}
+	if !ok {
+		http.Error(w, "todo not found", http.StatusNotFound)
+		return
+	}
+	w.Header().Set("Content-Type", "application/json")
+	_ = json.NewEncoder(w).Encode(t)
+}

internal/issues/statusstore.go

@@ -0,0 +1,122 @@
+package issues
+
+import (
+	"context"
+	"encoding/json"
+	"fmt"
+	"os"
+	"sync"
+	"time"
+
+	"github.com/ClickHouse/clickhouse-go/v2/lib/driver"
+)
+
+// TriageState is the part of an issue a person decided, kept across restarts.
+// The tracker is in-memory, so without this every deploy would reopen every
+// resolved and ignored issue.
+type TriageState struct {
+	Status     string `json:"status"`
+	ResolvedAt int64  `json:"resolvedAt,omitempty"`
+}
+
+// StatusStore persists triage state by issue id.
+type StatusStore interface {
+	Load(ctx context.Context) (map[string]TriageState, error)
+	Save(ctx context.Context, id string, s TriageState) error
+}
+
+// FileStatusStore keeps all states in one JSON file, rewritten on each save.
+type FileStatusStore struct {
+	mu     sync.Mutex
+	path   string
+	states map[string]TriageState
+}
+
+func NewFileStatusStore(path string) (*FileStatusStore, error) {
+	fs := &FileStatusStore{path: path, states: map[string]TriageState{}}
+	b, err := os.ReadFile(path)
+	if os.IsNotExist(err) {
+		return fs, nil
+	}
+	if err != nil {
+		return nil, err
+	}
+	if err := json.Unmarshal(b, &fs.states); err != nil {
+		return nil, err
+	}
+	return fs, nil
+}
+
+func (s *FileStatusStore) Load(context.Context) (map[string]TriageState, error) {
+	s.mu.Lock()
+	defer s.mu.Unlock()
+	out := make(map[string]TriageState, len(s.states))
+	for k, v := range s.states {
+		out[k] = v
+	}
+	return out, nil
+}
+
+func (s *FileStatusStore) Save(_ context.Context, id string, st TriageState) error {
+	s.mu.Lock()
+	defer s.mu.Unlock()
+	if st.Status == StatusOpen {
+		delete(s.states, id)
+	} else {
+		s.states[id] = st
+	}
+	b, err := json.Marshal(s.states)
+	if err != nil {
+		return err
+	}
+	tmp := s.path + ".tmp"
+	if err := os.WriteFile(tmp, b, 0o644); err != nil {
+		return err
+	}
+	return os.Rename(tmp, s.path)
+}
+
+// ClickHouseStatusStore keeps the latest state per issue id.
+type ClickHouseStatusStore struct {
+	conn driver.Conn
+	db   string
+}
+
+func NewClickHouseStatusStore(ctx context.Context, conn driver.Conn, db string) (*ClickHouseStatusStore, error) {
+	err := conn.Exec(ctx, fmt.Sprintf(`CREATE TABLE IF NOT EXISTS %s.issue_status (
+		id String,
+		status LowCardinality(String),
+		resolved_at Int64,
+		updated_at DateTime64(3, 'UTC')
+	) ENGINE = ReplacingMergeTree(updated_at)
+	ORDER BY id`, db))
+	if err != nil {
+		return nil, err
+	}
+	return &ClickHouseStatusStore{conn: conn, db: db}, nil
+}
+
+func (s *ClickHouseStatusStore) Load(ctx context.Context) (map[string]TriageState, error) {
+	rows, err := s.conn.Query(ctx, fmt.Sprintf(`SELECT id, status, resolved_at FROM %s.issue_status FINAL`, s.db))
+	if err != nil {
+		return nil, err
+	}
+	defer rows.Close()
+	out := map[string]TriageState{}
+	for rows.Next() {
+		var id string
+		var st TriageState
+		if err := rows.Scan(&id, &st.Status, &st.ResolvedAt); err != nil {
+			return nil, err
+		}
+		if st.Status != StatusOpen {
+			out[id] = st
+		}
+	}
+	return out, rows.Err()
+}
+
+func (s *ClickHouseStatusStore) Save(ctx context.Context, id string, st TriageState) error {
+	return s.conn.Exec(ctx, fmt.Sprintf(`INSERT INTO %s.issue_status (id, status, resolved_at, updated_at) VALUES (?, ?, ?, ?)`, s.db),
+		id, st.Status, st.ResolvedAt, time.Now().UTC())
+}

internal/issues/statusstore_test.go

@@ -0,0 +1,50 @@
+package issues
+
+import (
+	"context"
+	"path/filepath"
+	"testing"
+	"time"
+)
+
+func TestTriagePersistsAcrossRestart(t *testing.T) {
+	path := filepath.Join(t.TempDir(), "status.json")
+	store, _ := NewFileStatusStore(path)
+	tr := NewTracker()
+	if err := tr.SetStatusStore(context.Background(), store); err != nil {
+		t.Fatal(err)
+	}
+	tr.Record("span", "svc", "boom", Sample{Timestamp: 1})
+	id := Fingerprint("span", "svc", NormalizeTitle("boom"))
+	if _, ok := tr.SetStatus(id, StatusIgnored); !ok {
+		t.Fatal("set status")
+	}
+	time.Sleep(100 * time.Millisecond) // async save
+
+	// "Restart": fresh tracker, same file.
+	store2, err := NewFileStatusStore(path)
+	if err != nil {
+		t.Fatal(err)
+	}
+	tr2 := NewTracker()
+	if err := tr2.SetStatusStore(context.Background(), store2); err != nil {
+		t.Fatal(err)
+	}
+	tr2.Record("span", "svc", "boom", Sample{Timestamp: 2})
+	got, _ := tr2.Get(id)
+	if got.Status != StatusIgnored {
+		t.Fatalf("status after restart = %q, want ignored", got.Status)
+	}
+}
+
+func TestResolvedIssueRegresses(t *testing.T) {
+	tr := NewTracker()
+	tr.Record("span", "svc", "boom", Sample{Timestamp: 1})
+	id := Fingerprint("span", "svc", NormalizeTitle("boom"))
+	tr.SetStatus(id, StatusResolved)
+	tr.Record("span", "svc", "boom", Sample{Timestamp: 5})
+	got, _ := tr.Get(id)
+	if got.Status != StatusOpen || got.RegressedAt != 5 {
+		t.Fatalf("got status=%q regressedAt=%d", got.Status, got.RegressedAt)
+	}
+}

internal/issues/tracker.go

@@ -3,8 +3,10 @@
 package issues
 
 import (
+	"context"
 	"fmt"
 	"hash/fnv"
+	"log"
 	"regexp"
 	"sort"
 	"strings"
@@ -86,6 +88,8 @@ type Issue struct {
 	// Status is the triage state: open, resolved or ignored.
 	Status     string `json:"status"`
 	ResolvedAt int64  `json:"resolvedAt,omitempty"`
+	// RegressedAt is when a resolved issue last fired again and was reopened.
+	RegressedAt int64 `json:"regressedAt,omitempty"`
 	// NormalizedTitle is the deterministic, redacted form used for exact grouping.
 	NormalizedTitle string `json:"normalizedTitle,omitempty"`
 	// PatternID groups related exact issues without merging their operational IDs.
@@ -119,6 +123,10 @@ type Pattern struct {
 type Tracker struct {
 	mu     sync.Mutex
 	issues map[string]*Issue
+	// triage holds persisted resolved/ignored decisions by issue id, applied
+	// when an issue is (re)created after a restart.
+	triage      map[string]TriageState
+	statusStore StatusStore
 	feedback    map[string]string
 	sink        OccurrenceSink
 }
@@ -161,7 +169,43 @@ type ListPage struct {
 
 // NewTracker creates an empty Tracker.
 func NewTracker() *Tracker {
-	return &Tracker{issues: make(map[string]*Issue), feedback: make(map[string]string)}
+	return &Tracker{issues: make(map[string]*Issue), feedback: make(map[string]string), triage: make(map[string]TriageState)}
+}
+
+// SetStatusStore loads persisted triage decisions and saves future ones.
+func (t *Tracker) SetStatusStore(ctx context.Context, store StatusStore) error {
+	states, err := store.Load(ctx)
+	if err != nil {
+		return err
+	}
+	t.mu.Lock()
+	defer t.mu.Unlock()
+	t.statusStore = store
+	for id, st := range states {
+		t.triage[id] = st
+		if issue, ok := t.issues[id]; ok {
+			issue.Status, issue.ResolvedAt = st.Status, st.ResolvedAt
+		}
+	}
+	return nil
+}
+
+// persistLocked records a decision. The write happens off the lock.
+func (t *Tracker) persistLocked(id string, st TriageState) {
+	if st.Status == StatusOpen {
+		delete(t.triage, id)
+	} else {
+		t.triage[id] = st
+	}
+	if t.statusStore == nil {
+		return
+	}
+	store := t.statusStore
+	go func() {
+		if err := store.Save(context.Background(), id, st); err != nil {
+			log.Printf("failed to persist issue status: %v", err)
+		}
+	}()
 }
 
 // Record adds an occurrence of an error, creating a new issue or merging into
@@ -196,6 +240,9 @@ func (t *Tracker) record(kind, service, title string, sample Sample) (string, Oc
 			Status:          StatusOpen,
 			NormalizedTitle: NormalizeTitle(title),
 		}
+		if st, ok := t.triage[id]; ok {
+			issue.Status, issue.ResolvedAt = st.Status, st.ResolvedAt
+		}
 		issue.PatternSignature = patternSignature(kind, service, title, sample)
 		issue.PatternID = Fingerprint("pattern", issue.PatternSignature)
 		t.issues[id] = issue
@@ -214,6 +261,8 @@ func (t *Tracker) record(kind, service, title string, sample Sample) (string, Oc
 	if issue.Status == StatusResolved {
 		issue.Status = StatusOpen
 		issue.ResolvedAt = 0
+		issue.RegressedAt = sample.Timestamp
+		t.persistLocked(id, TriageState{Status: StatusOpen})
 	}
 	issue.Samples = append(issue.Samples, sample)
 	if len(issue.Samples) > maxSamples {
@@ -462,6 +511,8 @@ func (t *Tracker) SetStatus(id, status string) (Issue, bool) {
 	} else {
 		issue.ResolvedAt = time.Now().UnixNano()
 	}
+	issue.RegressedAt = 0
+	t.persistLocked(id, TriageState{Status: status, ResolvedAt: issue.ResolvedAt})
 	return cloneIssue(issue), true
 }
 

internal/todos/todos.go

@@ -27,12 +27,16 @@ type Todo struct {
 	UserAgent string    `json:"userAgent,omitempty"`
 	Session   string    `json:"session,omitempty"`
 	CreatedAt time.Time `json:"createdAt"`
+	Done      bool      `json:"done"`
+	DoneAt    time.Time `json:"doneAt,omitzero"`
 }
 
 // Store persists todos. List returns newest first; an empty project means all.
 type Store interface {
 	Add(ctx context.Context, t Todo) error
 	List(ctx context.Context, project string, limit int) ([]Todo, error)
+	// SetDone marks a todo done or open; ok is false for an unknown id.
+	SetDone(ctx context.Context, id string, done bool) (t Todo, ok bool, err error)
 }
 
 // FileStore keeps todos in memory and appends them to a JSONL file.
@@ -82,6 +86,35 @@ func (s *FileStore) Add(_ context.Context, t Todo) error {
 	return nil
 }
 
+func (s *FileStore) SetDone(_ context.Context, id string, done bool) (Todo, bool, error) {
+	s.mu.Lock()
+	defer s.mu.Unlock()
+	for i := range s.items {
+		if s.items[i].ID != id {
+			continue
+		}
+		s.items[i].Done = done
+		s.items[i].DoneAt = time.Time{}
+		if done {
+			s.items[i].DoneAt = time.Now().UTC()
+		}
+		var buf []byte
+		for _, t := range s.items {
+			line, err := json.Marshal(t)
+			if err != nil {
+				return Todo{}, false, err
+			}
+			buf = append(append(buf, line...), '\n')
+		}
+		tmp := s.path + ".tmp"
+		if err := os.WriteFile(tmp, buf, 0o644); err != nil {
+			return Todo{}, false, err
+		}
+		return s.items[i], true, os.Rename(tmp, s.path)
+	}
+	return Todo{}, false, nil
+}
+
 func (s *FileStore) List(_ context.Context, project string, limit int) ([]Todo, error) {
 	s.mu.Lock()
 	defer s.mu.Unlock()
@@ -121,6 +154,11 @@ func NewClickHouseStore(ctx context.Context, conn driver.Conn, db string) (*Clic
 	if err != nil {
 		return nil, err
 	}
+	for _, col := range []string{"done UInt8", "done_at DateTime64(3, 'UTC')"} {
+		if err := conn.Exec(ctx, fmt.Sprintf(`ALTER TABLE %s.todos ADD COLUMN IF NOT EXISTS %s`, db, col)); err != nil {
+			return nil, err
+		}
+	}
 	return &ClickHouseStore{conn: conn, db: db}, nil
 }
 
@@ -130,7 +168,7 @@ func (s *ClickHouseStore) Add(ctx context.Context, t Todo) error {
 }
 
 func (s *ClickHouseStore) List(ctx context.Context, project string, limit int) ([]Todo, error) {
-	q := fmt.Sprintf(`SELECT id, project, text, component, path, hash, url, user_agent, session, created_at FROM %s.todos`, s.db)
+	q := fmt.Sprintf(`SELECT id, project, text, component, path, hash, url, user_agent, session, created_at, done, done_at FROM %s.todos`, s.db)
 	var args []any
 	if project != "" {
 		q += ` WHERE project = ?`
@@ -146,10 +184,41 @@ func (s *ClickHouseStore) List(ctx context.Context, project string, limit int) (
 	var out []Todo
 	for rows.Next() {
 		var t Todo
-		if err := rows.Scan(&t.ID, &t.Project, &t.Text, &t.Component, &t.Path, &t.Hash, &t.URL, &t.UserAgent, &t.Session, &t.CreatedAt); err != nil {
+		var done uint8
+		if err := rows.Scan(&t.ID, &t.Project, &t.Text, &t.Component, &t.Path, &t.Hash, &t.URL, &t.UserAgent, &t.Session, &t.CreatedAt, &done, &t.DoneAt); err != nil {
 			return nil, err
 		}
+		t.Done = done != 0
 		out = append(out, t)
 	}
 	return out, rows.Err()
 }
+
+func (s *ClickHouseStore) SetDone(ctx context.Context, id string, done bool) (Todo, bool, error) {
+	var d uint8
+	doneAt := time.Unix(0, 0).UTC()
+	if done {
+		d, doneAt = 1, time.Now().UTC()
+	}
+	if err := s.conn.Exec(ctx, fmt.Sprintf(`ALTER TABLE %s.todos UPDATE done = ?, done_at = ? WHERE id = ? SETTINGS mutations_sync = 1`, s.db), d, doneAt, id); err != nil {
+		return Todo{}, false, err
+	}
+	rows, err := s.conn.Query(ctx, fmt.Sprintf(`SELECT id, project, text, component, path, hash, url, user_agent, session, created_at, done, done_at FROM %s.todos WHERE id = ?`, s.db), id)
+	if err != nil {
+		return Todo{}, false, err
+	}
+	defer rows.Close()
+	if !rows.Next() {
+		return Todo{}, false, nil
+	}
+	var t Todo
+	var dn uint8
+	if err := rows.Scan(&t.ID, &t.Project, &t.Text, &t.Component, &t.Path, &t.Hash, &t.URL, &t.UserAgent, &t.Session, &t.CreatedAt, &dn, &t.DoneAt); err != nil {
+		return Todo{}, false, err
+	}
+	t.Done = dn != 0
+	if !t.Done {
+		t.DoneAt = time.Time{}
+	}
+	return t, true, nil
+}

otel-ui/src/components/IssuesVisualizer.tsx

@@ -373,6 +373,15 @@ const IssueCard = ({
             <span className={`inline-flex h-[23px] shrink-0 items-center gap-1.5 whitespace-nowrap rounded-[6px] px-2 text-[10.5px] font-bold uppercase tracking-wider ${tonePill[tone]}`}>
               {toneLabel[tone]}
             </span>
+            {issue.regressedAt && issueStatusOf(issue) === "open" ? (
+              <span
+                title={`Was resolved, fired again ${formatRelativeTime(issue.regressedAt / 1e6)}`}
+                className="inline-flex h-[23px] shrink-0 items-center gap-1.5 whitespace-nowrap rounded-[6px] bg-ds-warn-bg px-2 text-[10.5px] font-bold uppercase tracking-wider text-ds-warn"
+              >
+                <RotateCcw className="h-3 w-3" aria-hidden="true" />
+                Regressed
+              </span>
+            ) : null}
             <span className="inline-flex h-[23px] shrink-0 items-center gap-1.5 whitespace-nowrap rounded-[6px] border border-ds-line-strong px-2 text-[10.5px] font-bold uppercase tracking-wider text-ds-text-2">
               <meta.Icon className="h-3 w-3 shrink-0" aria-hidden="true" />
               {meta.label}

otel-ui/src/components/Tabs.tsx

@@ -1,4 +1,4 @@
-import { useCallback, useState } from "react"
+import { useCallback, useEffect, useState } from "react"
 import * as Tabs from "@radix-ui/react-tabs"
 import {
   Activity,
@@ -28,6 +28,7 @@ import { TelemetryFilters } from "./TelemetryFilters"
 import { PatternsVisualizer } from "./PatternsVisualizer"
 import { RolloutsVisualizer } from "./RolloutsVisualizer"
 import { SourceIpsVisualizer } from "./SourceIpsVisualizer"
+import { TodosVisualizer } from "./TodosVisualizer"
 
 
 type SeverityMeta = {
@@ -269,15 +270,20 @@ export const TabsComponent = () => {
   const { traces, logs, activeTab, setActiveTab } = useObservabilityData()
   const issuesState = useIssues()
   const [statusBusy, setStatusBusy] = useState(false)
+  const [statusNotice, setStatusNotice] = useState<{ text: string; undo?: () => void; error?: boolean } | null>(null)
   // Trends tab only exists when the backend has ClickHouse-backed stats;
   // null while the capability check is in flight.
   const statsAvailable = useStatsAvailability()
 
-  // Triage action: PATCH the issue status, then refresh so counts/badges
+  // Triage action: apply optimistically, PATCH, then refresh so counts and
-  // reflect the server state. Failures surface via the issues error banner.
+  // badges match the server. A failure rolls back and says so; a success
+  // offers Undo because the card moves into the collapsed resolved/ignored
+  // group and would otherwise just vanish.
   const handleIssueStatusChange = useCallback(
     async (issue: Issue, status: string) => {
+      const previous = issue.status ?? "open"
       setStatusBusy(true)
+      void issuesState.patch(issue.id, { status, regressedAt: undefined })
       try {
         const res = await authFetch(`/api/issues/${issue.id}`, {
           method: "PATCH",
@@ -285,8 +291,14 @@ export const TabsComponent = () => {
           body: JSON.stringify({ status }),
         })
         if (!res.ok) throw new Error(`HTTP ${res.status}`)
+        const verb = status === "resolved" ? "Resolved" : status === "ignored" ? "Ignored" : "Reopened"
+        setStatusNotice({
+          text: `${verb}: ${issue.title}`,
+          undo: status === "open" ? undefined : () => void handleIssueStatusChange({ ...issue, status }, previous),
+        })
       } catch (err) {
         console.error("Failed to update issue status:", err)
+        setStatusNotice({ text: `Couldn't update issue: ${err instanceof Error ? err.message : String(err)}`, error: true })
       } finally {
         await issuesState.refresh()
         setStatusBusy(false)
@@ -295,6 +307,12 @@ export const TabsComponent = () => {
     [issuesState],
   )
 
+  useEffect(() => {
+    if (!statusNotice) return
+    const t = setTimeout(() => setStatusNotice(null), statusNotice.error ? 8000 : 6000)
+    return () => clearTimeout(t)
+  }, [statusNotice])
+
   return (
     <div className="flex flex-col gap-6">
       <TelemetryFilters />
@@ -335,6 +353,9 @@ export const TabsComponent = () => {
         <Tabs.Content className="outline-none py-2" value="tab10">
           {activeTab === "tab10" && <ViewErrorBoundary><SourceIpsVisualizer /></ViewErrorBoundary>}
         </Tabs.Content>
+        <Tabs.Content className="outline-none py-2" value="tab11">
+          {activeTab === "tab11" && <ViewErrorBoundary><TodosVisualizer /></ViewErrorBoundary>}
+        </Tabs.Content>
         <Tabs.Content
           className="outline-none py-2"
           value="tab2"
@@ -374,6 +395,28 @@ export const TabsComponent = () => {
           {activeTab === "tab6" && <ViewErrorBoundary><SearchAndWatcher /></ViewErrorBoundary>}
         </Tabs.Content>
       </Tabs.Root>
+      {statusNotice && (
+        <div
+          role="status"
+          className={`fixed bottom-6 left-1/2 z-50 flex max-w-[min(560px,calc(100vw-120px))] -translate-x-1/2 items-center gap-3 rounded-[10px] border bg-ds-surface px-4 py-2.5 text-[13px] ${
+            statusNotice.error ? "border-ds-critical/40 text-ds-critical" : "border-ds-line-strong text-ds-text"
+          }`}
+        >
+          <span className="truncate">{statusNotice.text}</span>
+          {statusNotice.undo && (
+            <button
+              type="button"
+              onClick={() => {
+                statusNotice.undo?.()
+                setStatusNotice(null)
+              }}
+              className="shrink-0 font-semibold text-ds-accent hover:underline"
+            >
+              Undo
+            </button>
+          )}
+        </div>
+      )}
     </div>
   )
 

otel-ui/src/components/TodosVisualizer.tsx

@@ -0,0 +1,159 @@
+import { useMemo, useState } from "react"
+import { CheckCircle2, ExternalLink, ListTodo, RefreshCw, RotateCcw } from "lucide-react"
+import { useTodos } from "../hooks/useTodos"
+import { formatRelativeTime } from "../lib/timeUtils"
+import type { Todo } from "../lib/types"
+import { Segmented } from "./common/Segmented"
+
+type StatusFilter = "open" | "done" | "all"
+
+const TodoCard = ({ todo, onDone }: { todo: Todo; onDone: (todo: Todo, done: boolean) => void }) => {
+  const location = `${todo.path ?? ""}${todo.hash ?? ""}` || "/"
+  return (
+    <article
+      className={`flex flex-col gap-2.5 rounded-[14px] border border-ds-line border-l-[3px] bg-ds-surface px-5 py-4 ${
+        todo.done ? "border-l-ds-ok" : "border-l-ds-line-strong"
+      }`}
+    >
+      <div className="flex items-start gap-4">
+        <p className={`min-w-0 flex-1 whitespace-pre-wrap break-words text-[14px] ${todo.done ? "text-ds-text-3 line-through" : "text-ds-text"}`}>
+          {todo.text}
+        </p>
+        <div className="flex shrink-0 items-center gap-2">
+          {todo.url && (
+            <a
+              href={todo.url}
+              target="_blank"
+              rel="noreferrer noopener"
+              className="inline-flex items-center gap-1.5 rounded-[9px] border border-ds-line-strong px-2.5 py-1.5 text-[12.5px] font-medium text-ds-text-2 hover:bg-ds-surface-2 hover:text-ds-text"
+            >
+              <ExternalLink className="h-3.5 w-3.5" aria-hidden="true" />
+              Open page
+            </a>
+          )}
+          <button
+            type="button"
+            onClick={() => onDone(todo, !todo.done)}
+            className="inline-flex items-center gap-1.5 rounded-[9px] border border-ds-line-strong px-2.5 py-1.5 text-[12.5px] font-medium text-ds-text-2 hover:bg-ds-surface-2 hover:text-ds-text"
+          >
+            {todo.done ? <RotateCcw className="h-3.5 w-3.5" aria-hidden="true" /> : <CheckCircle2 className="h-3.5 w-3.5" aria-hidden="true" />}
+            {todo.done ? "Reopen" : "Done"}
+          </button>
+        </div>
+      </div>
+      <div className="flex flex-wrap items-center gap-2 text-[11px] text-ds-text-3">
+        <span className="rounded-[6px] border border-ds-line-strong px-2 py-0.5 font-bold uppercase tracking-wider text-ds-text-2">{todo.project}</span>
+        {todo.component && (
+          <span className="rounded-[6px] border border-ds-accent/30 bg-ds-accent-bg px-2 py-0.5 font-bold uppercase tracking-wider text-ds-accent">
+            {todo.component}
+          </span>
+        )}
+        <span className="font-[family-name:var(--font-data)]">{location}</span>
+        <span>·</span>
+        <span title={new Date(todo.createdAt).toLocaleString()}>{formatRelativeTime(new Date(todo.createdAt).getTime())}</span>
+      </div>
+    </article>
+  )
+}
+
+export const TodosVisualizer = () => {
+  const { todos, loading, error, refresh, setDone } = useTodos()
+  const [status, setStatus] = useState<StatusFilter>("open")
+  const [project, setProject] = useState("")
+
+  const projects = useMemo(() => {
+    const counts = new Map<string, number>()
+    for (const t of todos) if (!t.done) counts.set(t.project, (counts.get(t.project) ?? 0) + 1)
+    for (const t of todos) if (!counts.has(t.project)) counts.set(t.project, 0)
+    return [...counts.entries()].sort((a, b) => b[1] - a[1] || a[0].localeCompare(b[0]))
+  }, [todos])
+
+  const visible = useMemo(
+    () =>
+      todos.filter(
+        (t) => (!project || t.project === project) && (status === "all" || (status === "done" ? t.done : !t.done)),
+      ),
+    [todos, project, status],
+  )
+  const openCount = todos.filter((t) => !t.done).length
+
+  return (
+    <div className="flex flex-col gap-4">
+      <div className="flex flex-wrap items-center gap-3">
+        <h1 className="flex items-center gap-2 font-[family-name:var(--font-display)] text-[17px] font-bold text-ds-text">
+          <ListTodo className="h-5 w-5 text-ds-text-3" aria-hidden="true" />
+          Todos from the site
+        </h1>
+        <span className="font-[family-name:var(--font-data)] text-[12px] text-ds-text-3">{openCount} open</span>
+        <div className="ml-auto flex items-center gap-2">
+          <Segmented
+            label="Status"
+            value={status}
+            onChange={setStatus}
+            options={[
+              { value: "open", label: "Open" },
+              { value: "done", label: "Done" },
+              { value: "all", label: "All" },
+            ]}
+          />
+          <button
+            type="button"
+            onClick={() => void refresh()}
+            aria-label="Refresh todos"
+            className="inline-flex h-8 w-8 items-center justify-center rounded-[9px] border border-ds-line text-ds-text-3 hover:bg-ds-surface-2 hover:text-ds-text"
+          >
+            <RefreshCw className="h-3.5 w-3.5" aria-hidden="true" />
+          </button>
+        </div>
+      </div>
+
+      {projects.length > 1 && (
+        <div role="group" aria-label="Project" className="flex flex-wrap gap-2">
+          {[["", openCount] as [string, number], ...projects].map(([name, count]) => (
+            <button
+              key={name || "all"}
+              type="button"
+              aria-pressed={project === name}
+              onClick={() => setProject(name)}
+              className={`rounded-[8px] border px-2.5 py-1 text-[12px] font-medium ${
+                project === name
+                  ? "border-ds-accent/40 bg-ds-accent-bg text-ds-accent"
+                  : "border-ds-line-strong text-ds-text-2 hover:bg-ds-surface-2"
+              }`}
+            >
+              {name || "All projects"} <span className="text-ds-text-3">{count}</span>
+            </button>
+          ))}
+        </div>
+      )}
+
+      {error && (
+        <div role="alert" className="rounded-[10px] border border-ds-critical/40 bg-ds-critical-bg px-4 py-2.5 text-[13px] text-ds-critical">
+          Couldn't load todos: {error}
+        </div>
+      )}
+
+      {visible.length === 0 ? (
+        <div className="flex flex-col items-center justify-center gap-2 rounded-[14px] border border-dashed border-ds-line py-16 text-center">
+          <ListTodo className="h-8 w-8 text-ds-text-3" aria-hidden="true" />
+          <p className="text-[14px] font-medium text-ds-text">
+            {loading ? "Loading…" : todos.length === 0 ? "No todos yet" : "Nothing matches"}
+          </p>
+          {todos.length === 0 && !loading && (
+            <p className="max-w-sm text-[12.5px] text-ds-text-3">
+              Press Alt+Shift+T on a page running otel-rum.js to file one.
+            </p>
+          )}
+        </div>
+      ) : (
+        <div className="flex flex-col gap-3">
+          {visible.map((t) => (
+            <TodoCard key={t.id} todo={t} onDone={(todo, done) => void setDone(todo, done)} />
+          ))}
+        </div>
+      )}
+    </div>
+  )
+}
+
+export default TodosVisualizer

otel-ui/src/components/layout/IconRail.tsx

@@ -7,6 +7,7 @@ import {
   GitBranch,
   Globe,
   LineChart,
+  ListTodo,
   Radar,
   ScrollText,
   TrendingUp,
@@ -64,6 +65,7 @@ export const IconRail: React.FC = () => {
     { tab: "tab2", label: "Metrics & APM", Icon: LineChart },
     { tab: "tab7", label: "RUM sessions", Icon: Globe },
     { tab: "tab10", label: "Source IPs", Icon: Fingerprint },
+    { tab: "tab11", label: "Todos from the site", Icon: ListTodo },
     ...(statsAvailable ? [{ tab: "tab5", label: "Historical trends", Icon: TrendingUp }] : []),
     { tab: "tab6", label: "Archive & trap", Icon: Radar },
   ]

otel-ui/src/hooks/useIssues.ts

@@ -28,6 +28,13 @@ export function useIssues() {
     },
   )
   const refresh = useCallback(() => mutate(), [mutate])
+  // Optimistic local edit so a triage click shows immediately; the next
+  // refresh replaces it with the server's truth.
+  const patch = useCallback(
+    (id: string, changes: Partial<Issue>) =>
+      mutate((current) => current?.map((i) => (i.id === id ? { ...i, ...changes } : i)) ?? current, { revalidate: false }),
+    [mutate],
+  )
 
   const { issuesVersion } = useObservabilityData()
 
@@ -46,5 +53,6 @@ export function useIssues() {
     loading: isLoading,
     error: error instanceof Error ? error.message : error ? String(error) : null,
     refresh,
+    patch,
   }
 }

otel-ui/src/hooks/useTodos.ts

@@ -0,0 +1,48 @@
+import { useCallback } from "react"
+import useSWR from "swr"
+import { authFetch, authSWRFetcher, tokens } from "../lib/auth"
+import type { Todo } from "../lib/types"
+
+const KEY = "/api/todos?limit=500"
+
+// Todos filed from the site by otel-todo.js (GET /api/todos). All projects
+// are fetched once; the view filters by project client-side.
+export function useTodos() {
+  const { data, error, isLoading, mutate } = useSWR<Todo[]>(tokens() ? KEY : null, authSWRFetcher, {
+    refreshInterval: 30_000,
+    revalidateOnFocus: false,
+    shouldRetryOnError: false,
+  })
+
+  const setDone = useCallback(
+    async (todo: Todo, done: boolean) => {
+      // Optimistic, then reconcile with the server.
+      await mutate(
+        async (current) => {
+          const res = await authFetch(`/api/todos/${todo.id}`, {
+            method: "PATCH",
+            headers: { "Content-Type": "application/json" },
+            body: JSON.stringify({ done }),
+          })
+          if (!res.ok) throw new Error(`HTTP ${res.status}`)
+          const updated = (await res.json()) as Todo
+          return (current ?? []).map((t) => (t.id === todo.id ? updated : t))
+        },
+        {
+          optimisticData: (current) => (current ?? []).map((t) => (t.id === todo.id ? { ...t, done } : t)),
+          rollbackOnError: true,
+          revalidate: false,
+        },
+      )
+    },
+    [mutate],
+  )
+
+  return {
+    todos: data ?? [],
+    loading: isLoading,
+    error: error instanceof Error ? error.message : error ? String(error) : null,
+    refresh: () => mutate(),
+    setDone,
+  }
+}

otel-ui/src/lib/routes.ts

@@ -10,6 +10,7 @@ export const TAB_PATHS: Record<string, string> = {
   "/patterns": "tab8",
   "/rollouts": "tab9",
   "/ips": "tab10",
+  "/todos": "tab11",
   "/traces": "tab1",
   "/metrics": "tab2",
   "/logs": "tab3",

otel-ui/src/lib/types.ts

@@ -201,6 +201,8 @@ export interface Issue {
   trend?: Record<string, number>;
   status?: "open" | "resolved" | "ignored" | string;
   resolvedAt?: number;
+  /** Set when a resolved issue fired again and was reopened. */
+  regressedAt?: number;
   normalizedTitle?: string;
   patternId?: string;
   patternSignature?: string;
@@ -334,3 +336,18 @@ export interface SourceIpEvent {
 
 /** Reason from the server's bad-actor rules (features.MarkBadActors). */
 export type BadActorReason = "" | "probe-scanner" | "enumerator" | "bot-4xx"
+
+export interface Todo {
+  id: string;
+  project: string;
+  text: string;
+  component?: string;
+  path?: string;
+  hash?: string;
+  url?: string;
+  userAgent?: string;
+  session?: string;
+  createdAt: string;
+  done: boolean;
+  doneAt?: string;
+}