Generalize the focus controller into a harness hosting swappable modes

Loosen AntiDrift's session controller into Keel's general collect→brain→act
loop. A new internal/harness runs at most one mode.Mode at a time, fanning
async completions out to the web SSE and status-bar surfaces.

- internal/mode: the Mode contract (Kind/Command/View/Active) plus optional
  EvidenceConsumer and Expirer ports, and the surfacing Envelope.
- internal/mode/focus: the former session/domain/statemachine packages moved
  under the mode, now satisfying the harness contracts unchanged.
- internal/mode/offscreen: a one-shot away-from-desk mode built on the new
  ai.Proposer, which turns a life-domain brief into one off-screen action.
- cmd/keeld replaces cmd/antidriftd; daemon wires focus + offscreen factories
  with per-mode persistence under ~/.keel/modes/<kind>.
- Finish the rename: KEEL_* env refs in the README, /keeld build artifact
  ignored, stale antidriftd binary removed.

Include the design + implementation plan this refactor was built from under
docs/superpowers/{specs,plans}/2026-06-04-controller-refactor*.md.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
This commit is contained in:
2026-06-05 18:00:49 -04:00
parent 258de2c14b
commit 7d69a1f320
57 changed files with 4069 additions and 627 deletions
+131
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package offscreen
import (
"context"
"os"
"path/filepath"
"strings"
"unicode/utf8"
)
// goalsPath is the standing-goals note loaded for the off-screen brief.
const goalsPath = "~/owc/goals-2026.md"
// maxBriefBytes caps the assembled brief so the propose prompt stays bounded.
const maxBriefBytes = 8 * 1024
// bugGlob matches the life-domain ("life-bug") notes under ~/owc/resources.
const bugGlob = "bug-*.md"
// assembleBrief builds the off-screen prompt context from today's tasks, the
// standing goals note, and the life-domain notes. It is best-effort: it never
// panics and never returns an error, and it tolerates nil ports and missing
// files (degrading to a short, mostly-empty brief).
func (m *Mode) assembleBrief() string {
var b strings.Builder
b.WriteString("## Today's tasks\n")
b.WriteString(m.briefTasks())
b.WriteString("\n")
if goals := m.briefGoals(); goals != "" {
b.WriteString("## Goals\n")
b.WriteString(goals)
b.WriteString("\n\n")
}
if domains := m.briefLifeDomains(); domains != "" {
b.WriteString("## Life domains\n")
b.WriteString(domains)
b.WriteString("\n")
}
return truncateBrief(b.String(), maxBriefBytes)
}
// briefTasks lists today's task titles, or "(none)" when the port is absent,
// errors, or returns nothing.
func (m *Mode) briefTasks() string {
if m.tasks == nil {
return "(none)\n"
}
list, err := m.tasks.Today(context.Background())
if err != nil || len(list) == 0 {
return "(none)\n"
}
var b strings.Builder
for _, t := range list {
title := strings.TrimSpace(t.Title)
if title == "" {
continue
}
b.WriteString("- ")
b.WriteString(title)
b.WriteString("\n")
}
if b.Len() == 0 {
return "(none)\n"
}
return b.String()
}
// briefGoals returns the goals note text, or "" when the port is absent or the
// file is missing/empty.
func (m *Mode) briefGoals() string {
if m.know == nil {
return ""
}
p, err := m.know.Load(context.Background(), goalsPath)
if err != nil {
return ""
}
return strings.TrimSpace(p.Text)
}
// briefLifeDomains loads every ~/owc/resources/bug-*.md note via the knowledge
// port (so reads honor its truncation) and concatenates their text under one
// section. Returns "" when the port is absent or no notes are readable. File
// access stays behind the port; when the port is nil it is skipped entirely.
func (m *Mode) briefLifeDomains() string {
if m.know == nil {
return ""
}
home, err := os.UserHomeDir()
if err != nil {
return ""
}
matches, err := filepath.Glob(filepath.Join(home, "owc", "resources", bugGlob))
if err != nil || len(matches) == 0 {
return ""
}
var b strings.Builder
for _, path := range matches {
p, err := m.know.Load(context.Background(), path)
if err != nil {
continue
}
text := strings.TrimSpace(p.Text)
if text == "" {
continue
}
b.WriteString("### ")
b.WriteString(filepath.Base(path))
b.WriteString("\n")
b.WriteString(text)
b.WriteString("\n\n")
}
return strings.TrimRight(b.String(), "\n")
}
// truncateBrief clips s to at most max bytes with a marker, keeping the prompt
// bounded. It backs up to a rune boundary so it never splits a multibyte rune.
func truncateBrief(s string, max int) string {
if len(s) <= max {
return s
}
cut := max
for cut > 0 && !utf8.RuneStart(s[cut]) {
cut--
}
return s[:cut] + "\n…(truncated)"
}
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// Package offscreen is the away-from-the-desk mode: it proposes one worthwhile
// off-screen action from the life-domain frame and files it on confirm. It is
// one-shot — after confirm or dismiss it goes inactive and the harness releases
// it.
package offscreen
import (
"context"
"encoding/json"
"errors"
"fmt"
"sync"
"time"
"keel/internal/ai"
"keel/internal/harness"
"keel/internal/knowledge"
"keel/internal/mode"
"keel/internal/tasks"
)
const proposeTimeout = 60 * time.Second
const (
statusPending = "pending"
statusProposed = "proposed"
statusError = "error"
statusDone = "done"
)
// Mode is the one-shot off-screen advisor: collect → propose → confirm/dismiss.
type Mode struct {
mu sync.Mutex
async harness.Async
ai *ai.Service
tasks tasks.Provider
know knowledge.Source // may be nil; assembleBrief must guard
status string
gen int
proposal *ai.OffscreenProposal
errMsg string
done bool
}
var _ mode.Mode = (*Mode)(nil)
// New builds an off-screen mode from the shared services. It does not start the
// brain; call Command(ctx, "start", nil) (or use Factory) to kick off a brief.
func New(svc harness.Services) *Mode {
m := &Mode{
ai: svc.AI,
tasks: svc.Tasks,
know: svc.Knowledge,
status: statusPending,
}
m.async = harness.NewAsync(&m.mu, svc.Notify)
return m
}
func (m *Mode) Kind() string { return "offscreen" }
// Active reports whether the mode still holds the harness. It goes false after
// confirm or dismiss.
func (m *Mode) Active() bool {
m.mu.Lock()
defer m.mu.Unlock()
return !m.done
}
// Command routes a surface command. start (re)runs the brief; confirm files the
// proposed action and finishes; dismiss finishes without writing.
func (m *Mode) Command(ctx context.Context, name string, _ json.RawMessage) error {
switch name {
case "start":
return m.start()
case "confirm":
return m.confirm(ctx)
case "dismiss":
m.mu.Lock()
m.done = true
m.mu.Unlock()
return nil
default:
return fmt.Errorf("offscreen: unknown command %q", name)
}
}
// start assembles the brief and kicks off the brain asynchronously. A new call
// bumps the generation so a stale in-flight result is discarded.
func (m *Mode) start() error {
m.mu.Lock()
m.gen++
gen := m.gen
m.status = statusPending
m.proposal = nil
m.errMsg = ""
m.mu.Unlock()
brief := m.assembleBrief()
var p ai.OffscreenProposal
var err error
m.async.Run(proposeTimeout,
func(ctx context.Context) { p, err = m.ai.Propose(ctx, brief) },
func() bool { return gen != m.gen },
func() {
if err != nil {
m.status = statusError
m.errMsg = err.Error()
return
}
m.status = statusProposed
m.proposal = &p
})
return nil
}
// confirm files the proposed action as a task and ends the mode. It errors if
// there is nothing to confirm yet.
func (m *Mode) confirm(ctx context.Context) error {
m.mu.Lock()
p := m.proposal
m.mu.Unlock()
if p == nil {
return errors.New("offscreen: nothing to confirm")
}
if err := m.tasks.Create(ctx, tasks.NewTask(p.NextAction)); err != nil {
return err
}
m.mu.Lock()
m.status = statusDone
m.done = true
m.mu.Unlock()
return nil
}
// View projects the mode's state for surfaces. Always JSON-marshalable.
func (m *Mode) View() any {
m.mu.Lock()
defer m.mu.Unlock()
v := map[string]any{"status": m.status}
if m.proposal != nil {
v["next_action"] = m.proposal.NextAction
v["rationale"] = m.proposal.Rationale
}
if m.errMsg != "" {
v["error"] = m.errMsg
}
return v
}
// Factory builds a fresh off-screen mode and kicks off the brief immediately.
func Factory(svc harness.Services) mode.Mode {
m := New(svc)
_ = m.start()
return m
}
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package offscreen
import (
"context"
"errors"
"testing"
"time"
"keel/internal/ai"
"keel/internal/harness"
"keel/internal/tasks"
)
// stubBackend is a local fake ai.Backend; ai's package-internal fake is not
// reachable from this package, so we define our own here.
type stubBackend struct {
out string
err error
}
func (b stubBackend) Name() string { return "stub" }
func (b stubBackend) Run(context.Context, string) (string, error) {
return b.out, b.err
}
type fakeTasks struct {
created []string
}
func (f *fakeTasks) Today(context.Context) ([]tasks.Task, error) { return nil, nil }
func (f *fakeTasks) Create(_ context.Context, t tasks.Task) error {
f.created = append(f.created, t.Title)
return nil
}
func newTestMode(t *testing.T, ft *fakeTasks, backend ai.Backend) *Mode {
t.Helper()
svc := harness.Services{
AI: ai.NewService(backend),
Tasks: ft,
Clock: func() time.Time { return time.Unix(0, 0) },
Notify: func() {},
}
return New(svc)
}
// waitStatus polls the mode's View until status reaches want, or fails after 2s.
func waitStatus(t *testing.T, m *Mode, want string) {
t.Helper()
deadline := time.Now().Add(2 * time.Second)
for time.Now().Before(deadline) {
v, _ := m.View().(map[string]any)
if v != nil && v["status"] == want {
return
}
time.Sleep(5 * time.Millisecond)
}
t.Fatalf("status never reached %q (last view: %+v)", want, m.View())
}
func okBackend() stubBackend {
return stubBackend{out: `{"next_action":"call mum","rationale":"people goal"}`}
}
func TestConfirmFilesExactlyOneTask(t *testing.T) {
ft := &fakeTasks{}
m := newTestMode(t, ft, okBackend())
if err := m.Command(context.Background(), "start", nil); err != nil {
t.Fatalf("start: %v", err)
}
waitStatus(t, m, statusProposed)
if err := m.Command(context.Background(), "confirm", nil); err != nil {
t.Fatalf("confirm: %v", err)
}
if len(ft.created) != 1 {
t.Fatalf("created %d tasks, want 1", len(ft.created))
}
if ft.created[0] != "call mum" {
t.Fatalf("created task title = %q, want %q", ft.created[0], "call mum")
}
if m.Active() {
t.Fatal("mode should be done after confirm")
}
}
func TestDismissWritesNothing(t *testing.T) {
ft := &fakeTasks{}
m := newTestMode(t, ft, okBackend())
if err := m.Command(context.Background(), "start", nil); err != nil {
t.Fatalf("start: %v", err)
}
waitStatus(t, m, statusProposed)
if err := m.Command(context.Background(), "dismiss", nil); err != nil {
t.Fatalf("dismiss: %v", err)
}
if len(ft.created) != 0 {
t.Fatalf("dismiss created %d tasks, want 0", len(ft.created))
}
if m.Active() {
t.Fatal("mode should be done after dismiss")
}
}
func TestProposeErrorSurfacesInView(t *testing.T) {
ft := &fakeTasks{}
m := newTestMode(t, ft, stubBackend{err: errors.New("boom")})
if err := m.Command(context.Background(), "start", nil); err != nil {
t.Fatalf("start: %v", err)
}
waitStatus(t, m, statusError)
v, _ := m.View().(map[string]any)
if v == nil || v["error"] == nil || v["error"] == "" {
t.Fatalf("expected error field in view, got %+v", v)
}
if !m.Active() {
t.Fatal("mode should stay active on error so the user can retry or dismiss")
}
}
func TestConfirmWithoutProposalErrors(t *testing.T) {
ft := &fakeTasks{}
m := newTestMode(t, ft, okBackend())
// No start → no proposal.
if err := m.Command(context.Background(), "confirm", nil); err == nil {
t.Fatal("confirm without a proposal should error")
}
if len(ft.created) != 0 {
t.Fatalf("confirm without proposal created %d tasks, want 0", len(ft.created))
}
}
func TestUnknownCommandErrors(t *testing.T) {
m := newTestMode(t, &fakeTasks{}, okBackend())
if err := m.Command(context.Background(), "bogus", nil); err == nil {
t.Fatal("unknown command should error")
}
}