interactive.go RawHistoryFolder

1package modes
2
3import (
4	"context"
5	"encoding/json"
6	"fmt"
7	"os"
8	"path/filepath"
9	"strings"
10	"sync"
11	"time"
12
13	"github.com/patriceckhart/zot/internal/agent/extensions"
14	"github.com/patriceckhart/zot/internal/agent/modes/telegram"
15	"github.com/patriceckhart/zot/internal/agent/tools"
16	"github.com/patriceckhart/zot/internal/auth"
17	"github.com/patriceckhart/zot/internal/core"
18	"github.com/patriceckhart/zot/internal/provider"
19	"github.com/patriceckhart/zot/internal/skills"
20	"github.com/patriceckhart/zot/internal/tui"
21)
22
23// InteractiveConfig configures the interactive loop.
24type InteractiveConfig struct {
25	Terminal     tui.Terminal
26	Theme        tui.Theme
27	Model        string
28	Provider     string
29	AuthMethod   string // "apikey" | "oauth" — used to tag cost as (sub) in status bar
30	BaseURL      string
31	Reasoning    string
32	SystemPrompt string
33	Tools        core.Registry
34	MaxSteps     int
35	CWD          string
36
37	// Agent is optional. If nil, zot opens without credentials; the
38	// user must /login before they can prompt.
39	Agent *core.Agent
40
41	InitialInput string
42
43	// Auth is required. When the user runs /login, Interactive talks to
44	// AuthManager to open a browser and wait for the callback.
45	AuthManager *auth.Manager
46	// BuildAgent is called after a successful login to (re)construct the
47	// agent with the fresh credential. It returns the new agent and
48	// the concrete provider/model in use.
49	BuildAgent func() (*core.Agent, string, string, error)
50
51	// BuildAgentFor rebuilds the agent with an explicit provider/model
52	// override (used by the /model picker when switching providers).
53	// If providerOverride is empty, the current provider is kept.
54	BuildAgentFor func(providerOverride, modelOverride string) (*core.Agent, string, string, error)
55
56	// ZotHome is the root directory for sessions/, used by /sessions
57	// and the update-check cache.
58	ZotHome string
59
60	// Version is the binary's current version (from main.version).
61	// Used only for display; the update check itself is done outside
62	// this package to avoid an import cycle.
63	Version string
64
65	// UpdateInfoChan is an optional channel that delivers the result
66	// of the github-release update check. Interactive reads at most
67	// one value, drops it if the check reported nothing, and otherwise
68	// surfaces a yellow "update available" banner at the top of the
69	// chat. Nil channel = no banner, no startup cost.
70	UpdateInfoChan <-chan UpdateInfo
71
72	// Sandbox is the shared sandbox pointer. Toggled by /jail and /unjail.
73	Sandbox *tools.Sandbox
74
75	// LoadSession swaps the current session for the one at path. The
76	// callback returns the new agent message slice so the TUI can invalidate.
77	LoadSession func(path string) error
78
79	// CurrentSessionPath returns the path of the live session file
80	// on disk (the one every AppendMessage writes to). Used by
81	// /session export so the exporter ships the exact bytes on
82	// disk. Returns an empty string when --no-session is set or
83	// no session is open.
84	CurrentSessionPath func() string
85
86	// FlushSession writes any in-memory agent messages to the
87	// session file that haven't been persisted yet. Called by
88	// /session export right before reading the file so the
89	// exported bytes reflect the full current conversation, not
90	// just the rows the agent happened to write synchronously.
91	// The default WriteNewTranscript-at-exit strategy means most
92	// of a running session lives only in memory until the tui
93	// closes; without a flush hook, /session export writes a
94	// file that only has the meta row.
95	FlushSession func()
96
97	// PersistModel is called whenever the user switches model or provider.
98	// It should update config.json and (if there's an active session)
99	// write a new meta row so resume picks up the same model.
100	PersistModel func(providerName, model string)
101
102	OnAssistant  func(m provider.Message)
103	OnToolResult func(id string, r core.ToolResult)
104
105	// Extensions, if non-nil, lets users invoke extension-registered
106	// slash commands. Commands declared by extensions are looked up
107	// AFTER the built-in catalog so a built-in name always wins.
108	Extensions *extensions.Manager
109
110	// SkillSnapshot, if non-nil, returns the current list of
111	// discovered SKILL.md files. Re-invoked each time /skills opens
112	// so the picker reflects edits made during the session.
113	SkillSnapshot func() []*skills.Skill
114
115	// ChangelogChan, if non-nil, delivers release-notes for the
116	// current binary version once at startup. Interactive opens a
117	// dismissible overlay when the channel produces a non-empty
118	// body. Receiver fires at most once.
119	ChangelogChan <-chan ChangelogPayload
120
121	// OnChangelogDismiss, if non-nil, is called once the user
122	// closes the changelog overlay. The cli wires this to a
123	// MarkChangelogShown call so the same version doesn't show
124	// again on the next launch.
125	OnChangelogDismiss func()
126
127	// NoYolo is true when --no-yolo was passed. Interactive opens
128	// a confirmation dialog before every tool call and blocks the
129	// tool until the user picks yes / always-this-tool /
130	// always-all / no. When false (default), tools run freely.
131	NoYolo bool
132
133	// ConfirmGate is the session-scoped gate wrapping this
134	// interactive's Confirmer. When non-nil, /yolo can call
135	// AllowAll() on it to disable confirmation for the rest of the
136	// session. When nil (yolo mode), /yolo reports that there's
137	// nothing to disable.
138	ConfirmGate *core.ConfirmGate
139}
140
141// ChangelogPayload mirrors agent.ChangelogInfo without the import
142// cycle. The cli builds one from the http response, the tui opens
143// the overlay when one arrives.
144type ChangelogPayload struct {
145	Version string
146	Body    string
147	URL     string
148}
149
150// Interactive is the TUI chat loop.
151type Interactive struct {
152	cfg  InteractiveConfig
153	view *tui.View
154	ed   *tui.Editor
155	rend *tui.Renderer
156
157	mu           sync.Mutex
158	agent        *core.Agent
159	streaming    strings.Builder
160	streamOn     bool
161	toolCalls    map[string]*tui.ToolCallView
162	toolOrder    []string
163	statusErr    string
164	statusOK     string
165	helpBlock    []string // rendered above the chat when /help was typed
166	cumUsage     provider.Usage
167	lastCtxInput int // input_tokens of the most recent turn — approximates current context size
168	busy         bool
169	dirty        chan struct{}
170	cancelTurn   context.CancelFunc
171	scrollOffset int // rows from the bottom; 0 = pinned to latest
172
173	// Messages typed while a turn is in flight. Each is delivered as
174	// its own follow-up turn once the current one finishes. Rendered
175	// above the status bar as "sliding in: ..." chips.
176	queued []string
177
178	// runCtx is the top-level context passed to Run(). Follow-up turns
179	// drained from `queued` are started against this context so they
180	// survive past the ctx of the key event that enqueued them.
181	runCtx context.Context
182
183	// autoCompacting is true while a model-triggered compaction is in
184	// flight. Surfaced in the status bar so the user can tell a
185	// condense pass from a regular assistant turn.
186	autoCompacting bool
187
188	// updateInfo is the result of the async update check. Zero value
189	// while the check hasn't completed or nothing is available.
190	updateInfo UpdateInfo
191
192	dialog            *loginDialog
193	modelDialog       *modelDialog
194	sessionDialog     *sessionDialog
195	jumpDialog        *jumpDialog
196	btwDialog         *btwDialog
197	skillsDialog      *skillsDialog
198	changelogDialog   *changelogDialog
199	confirmDialog     *confirmDialog
200	logoutDialog      *logoutDialog
201	telegramDialog    *telegramDialog
202	telegramBridge    *telegram.Bridge
203	sessionOpsDialog  *sessionOpsDialog
204	sessionTreeDialog *sessionTreeDialog
205
206	// pendingFork is true when the user ran /session fork: the next
207	// jump-picker selection should branch off that message instead
208	// of scrolling. Flag resets after the action fires or the dialog
209	// is dismissed, so repeated /jump calls don't turn into forks.
210	pendingFork bool
211	suggest     *slashSuggester
212	spin        *spinner
213
214	// parkedTurn is the 1-based turn number the viewport is currently
215	// scrolled to by /jump. 0 = not parked, showing the tail as usual.
216	// Rendered as a muted footer at the bottom of the chat so users
217	// don't forget they're looking at history.
218	parkedTurn  int
219	parkedTotal int
220
221	// lastCtrlC is when the user last pressed ctrl+c. The first press
222	// clears the editor / cancels a turn / shows a hint; a second press
223	// within ctrlCExitWindow exits. Mirrors the python-repl convention.
224	lastCtrlC time.Time
225
226	// welcomeStart is when the interactive run began. The welcome
227	// banner shows the binary version for welcomeVersionDuration
228	// after this point and reverts to plain text after.
229	welcomeStart time.Time
230
231	// extNotes are one-shot styled lines pushed by extensions via
232	// Notify / Display. They live above the editor (just below the
233	// transcript) until cleared by /clear or another reset.
234	extNotes []string
235}
236
237// welcomeVersionDuration is how long the welcome banner shows the
238// version suffix before reverting to the plain headline. 1.5s is
239// enough to read at a glance and keeps the splash short.
240const welcomeVersionDuration = 1500 * time.Millisecond
241
242// NewInteractive constructs an Interactive from cfg.
243func NewInteractive(cfg InteractiveConfig) *Interactive {
244	i := &Interactive{
245		cfg: cfg,
246		view: &tui.View{
247			Theme:      cfg.Theme,
248			ImageProto: tui.DetectImageProtocol(),
249		},
250		ed:                tui.NewEditor(cfg.Theme.FG256(cfg.Theme.Accent, "▌ ")),
251		rend:              tui.NewRenderer(cfg.Terminal),
252		toolCalls:         map[string]*tui.ToolCallView{},
253		dirty:             make(chan struct{}, 8),
254		dialog:            newLoginDialog(),
255		modelDialog:       newModelDialog(),
256		sessionDialog:     newSessionDialog(),
257		jumpDialog:        newJumpDialog(),
258		btwDialog:         newBtwDialog(),
259		skillsDialog:      newSkillsDialog(),
260		changelogDialog:   newChangelogDialog(),
261		confirmDialog:     newConfirmDialog(),
262		logoutDialog:      newLogoutDialog(),
263		telegramDialog:    newTelegramDialog(),
264		sessionOpsDialog:  newSessionOpsDialog(),
265		sessionTreeDialog: newSessionTreeDialog(),
266		suggest:           newSlashSuggester(),
267		spin:              newSpinner(),
268	}
269	if cfg.Agent != nil {
270		i.agent = cfg.Agent
271		i.view.Messages = cfg.Agent.Messages()
272	}
273	return i
274}
275
276// Run blocks until the user quits.
277func (i *Interactive) Run(ctx context.Context) error {
278	i.runCtx = ctx
279	term := i.cfg.Terminal
280	restore, err := term.EnterRaw()
281	if err != nil {
282		return err
283	}
284	defer restore()
285	defer func() {
286		if i.telegramBridge != nil {
287			i.telegramBridge.Stop()
288		}
289	}()
290
291	_, _ = term.Write([]byte(tui.SeqBracketedPasteOn))
292	_, _ = term.Write([]byte(tui.SeqAltScreenOn))
293	defer term.Write([]byte(tui.SeqAltScreenOff + tui.SeqBracketedPasteOff + tui.SeqShowCursor))
294
295	cols, rows := term.Size()
296	i.rend.Resize(cols, rows)
297	term.OnResize(func() {
298		c, r := term.Size()
299		i.rend.Resize(c, r)
300		// Force an immediate redraw on resize. The throttled invalidate
301		// path is fine for animation, but a window resize is a discrete
302		// user action where any visible delay (or stale frame) reads as
303		// brokenness. redraw() is mutex-safe; the worst that happens is
304		// a duplicate paint if the throttler is mid-flight, which is
305		// invisible.
306		i.redraw()
307	})
308
309	if i.cfg.InitialInput != "" {
310		i.ed.SetValue(i.cfg.InitialInput)
311	}
312
313	// Stamp the welcome time and schedule a one-shot redraw at the
314	// expiry so the version suffix disappears on its own even if the
315	// user hasn't typed anything yet.
316	i.welcomeStart = time.Now()
317	time.AfterFunc(welcomeVersionDuration, i.invalidate)
318
319	// If the agent was constructed with a pre-loaded transcript
320	// (--continue, --resume, --session) park the viewport on the
321	// most recent turn so the user lands looking at where the
322	// previous session left off rather than at the bottom of an
323	// already-rendered final reply.
324	if i.agent != nil {
325		if msgs := i.agent.Messages(); len(msgs) > 0 {
326			i.scrollToLastTurn(msgs)
327		}
328	}
329
330	// No credential at startup? Auto-open the login dialog, and mark
331	// the status line. The user can Esc out of the dialog if they
332	// want to dismiss it (e.g. to check /help or /exit first).
333	if i.agent == nil {
334		i.statusErr = "not logged in. pick a login method below or press esc to dismiss."
335		i.dialog.Open()
336	}
337
338	// Input goroutine.
339	keys := make(chan tui.Key, 8)
340	go func() {
341		reader := tui.NewReaderWithPeek(term.ReadByte, term.PeekByteTimeout)
342		for {
343			k, err := reader.Read()
344			if err != nil {
345				return
346			}
347			keys <- k
348		}
349	}()
350
351	// Subscribe to auth events.
352	var authEvents <-chan auth.Event
353	if i.cfg.AuthManager != nil {
354		authEvents = i.cfg.AuthManager.Events()
355	}
356
357	// Animation ticker: drives spinner and dialog-related redraws when
358	// nothing else changed. 120ms is slow enough that highlighting a huge
359	// transcript doesn't spin the cpu.
360	tick := time.NewTicker(120 * time.Millisecond)
361	defer tick.Stop()
362
363	// Redraw throttle: coalesce bursts of invalidate() calls so we paint
364	// at most once every redrawMinInterval. Huge tool-result dumps can
365	// fire hundreds of invalidations while the user is typing; without
366	// this, the input goroutine never gets CPU and keystrokes lag.
367	const redrawMinInterval = 16 * time.Millisecond
368	var lastRedraw time.Time
369	var pendingRedraw bool
370	var pendingTimer *time.Timer
371
372	drainPending := func() {
373		if pendingTimer != nil {
374			pendingTimer.Stop()
375			pendingTimer = nil
376		}
377		if pendingRedraw {
378			pendingRedraw = false
379			lastRedraw = time.Now()
380			i.redraw()
381		}
382	}
383
384	requestRedraw := func() {
385		since := time.Since(lastRedraw)
386		if since >= redrawMinInterval {
387			// Redrawing right now subsumes any pending redraw, so clear
388			// the throttle state. Without this, a pending flag stays
389			// stuck at true and subsequent invalidate() calls within
390			// redrawMinInterval get dropped — which is exactly how the
391			// final "turn finished" frame went missing until the user
392			// nudged the ui by typing or scrolling.
393			if pendingTimer != nil {
394				pendingTimer.Stop()
395			}
396			pendingRedraw = false
397			lastRedraw = time.Now()
398			i.redraw()
399			return
400		}
401		if pendingRedraw {
402			return // already scheduled
403		}
404		pendingRedraw = true
405		wait := redrawMinInterval - since
406		if pendingTimer == nil {
407			pendingTimer = time.AfterFunc(wait, func() {
408				// Poke the dirty channel so the main loop wakes and
409				// drains the pending redraw on its own goroutine. We
410				// can't call drainPending here directly — it touches
411				// closure state shared with the main loop.
412				i.invalidate()
413			})
414		} else {
415			pendingTimer.Reset(wait)
416		}
417	}
418
419	i.invalidate()
420
421	updates := i.cfg.UpdateInfoChan  // nil-safe; nil channel blocks forever in select
422	changelog := i.cfg.ChangelogChan // single-shot, see case below
423
424	for {
425		select {
426		case <-ctx.Done():
427			return ctx.Err()
428		case k := <-keys:
429			if done := i.handleKey(ctx, k); done {
430				return nil
431			}
432			i.invalidate()
433		case ev := <-authEvents:
434			i.handleAuthEvent(ev)
435			i.invalidate()
436		case info, ok := <-updates:
437			if ok && info.Available {
438				i.mu.Lock()
439				i.updateInfo = info
440				i.mu.Unlock()
441				i.invalidate()
442			}
443			updates = nil // single-shot; subsequent iterations skip this case
444		case cl, ok := <-changelog:
445			if ok && cl.Body != "" {
446				i.changelogDialog.Open(cl.Version, cl.URL, cl.Body)
447				i.invalidate()
448			}
449			changelog = nil // single-shot
450		case <-i.dirty:
451			requestRedraw()
452		case <-tick.C:
453			// Always drain a pending redraw on the tick. This is the
454			// safety net that catches the case where the dirty channel
455			// was saturated when the final "turn finished" invalidate
456			// fired, or where the throttle scheduled a deferred redraw
457			// and the AfterFunc-driven invalidate got dropped on a
458			// full channel.
459			drainPending()
460			if i.busy || i.dialog.Active() || i.modelDialog.Active() || i.sessionDialog.Active() || i.jumpDialog.Active() || i.btwDialog.Active() || i.skillsDialog.Active() || i.changelogDialog.Active() || i.confirmDialog.Active() || i.logoutDialog.Active() || i.telegramDialog.Active() || i.sessionOpsDialog.Active() || i.sessionTreeDialog.Active() {
461				requestRedraw() // keep the spinner / dialog animation moving
462			}
463		}
464	}
465}
466
467func (i *Interactive) invalidate() {
468	select {
469	case i.dirty <- struct{}{}:
470	default:
471	}
472}
473
474// lastCols returns the current terminal width in columns.
475func (i *Interactive) lastCols() int {
476	cols, _ := i.cfg.Terminal.Size()
477	return cols
478}
479
480// chatPage returns the number of chat rows currently visible, used
481// as the page size for PageUp/PageDown.
482func (i *Interactive) chatPage() int {
483	_, rows := i.cfg.Terminal.Size()
484	p := rows - 6 // rough reservation for status + editor + a dialog line
485	if p < 4 {
486		p = 4
487	}
488	return p
489}
490
491// scrollBy adjusts the scroll offset. Positive = up (into history).
492// Clearing the parked-turn label when we're back at the bottom means
493// the "viewing turn N" footer goes away automatically as soon as you
494// scroll back to the live tail.
495func (i *Interactive) scrollBy(delta int) {
496	i.mu.Lock()
497	i.scrollOffset += delta
498	if i.scrollOffset < 0 {
499		i.scrollOffset = 0
500	}
501	if i.scrollOffset == 0 {
502		i.parkedTurn = 0
503		i.parkedTotal = 0
504	}
505	i.mu.Unlock()
506	i.invalidate()
507}
508
509// scrollToBottom pins the view to the latest content.
510func (i *Interactive) scrollToBottom() {
511	i.mu.Lock()
512	i.scrollOffset = 0
513	i.parkedTurn = 0
514	i.parkedTotal = 0
515	i.mu.Unlock()
516	i.invalidate()
517}
518
519func (i *Interactive) redraw() {
520	i.mu.Lock()
521	defer i.mu.Unlock()
522
523	cols, _ := i.cfg.Terminal.Size()
524	if i.agent != nil {
525		i.view.Messages = i.agent.Messages()
526	} else {
527		i.view.Messages = nil
528	}
529	i.view.Streaming = i.streaming.String()
530	i.view.StreamingActive = i.streamOn
531	// Belt and suspenders: if the transcript's last message is already an
532	// assistant message, the streaming view is stale (EvAssistantMessage may
533	// not have fired yet) — suppress it to avoid double-rendering the reply.
534	if n := len(i.view.Messages); n > 0 && i.view.Messages[n-1].Role == provider.RoleAssistant {
535		i.view.StreamingActive = false
536	}
537	// Live tool-call view: only shown while a turn is in flight. Once
538	// the agent is idle, every tool call has already been folded into
539	// the transcript (as assistant.ToolCallBlock + a tool-role message),
540	// so showing v.ToolCalls a second time would duplicate them below
541	// the final assistant text — which looks like the summary came
542	// "before" the tools.
543	i.view.ToolCalls = i.view.ToolCalls[:0]
544	if i.busy {
545		for _, id := range i.toolOrder {
546			if tc, ok := i.toolCalls[id]; ok {
547				i.view.ToolCalls = append(i.view.ToolCalls, *tc)
548			}
549		}
550	}
551	i.view.Err = i.statusErr
552
553	chat := i.view.Build(cols)
554
555	// Welcome banner: shown at the top of the chat area when there is
556	// no transcript yet. Disappears after the first message is sent.
557	// The version suffix is shown for welcomeVersionDuration after
558	// startup, then drops off automatically.
559	if len(i.view.Messages) == 0 && !i.streamOn && len(i.toolOrder) == 0 {
560		showVer := !i.welcomeStart.IsZero() && time.Since(i.welcomeStart) < welcomeVersionDuration
561		chat = append(welcomeBanner(i.cfg.Theme, i.cfg.Version, showVer), chat...)
562	}
563
564	// Update-available banner: prepended above everything else so it's
565	// the first thing the user sees when opening a new zot session.
566	// Once rendered, it stays until the user updates to a newer
567	// version — we don't persist a "dismissed" flag because this is
568	// cheap and re-showing it is how most users remember to update.
569	if i.updateInfo.Available {
570		banner := renderUpdateBanner(i.cfg.Theme, i.updateInfo, cols)
571		chat = append(banner, chat...)
572	}
573
574	// /help block: appended to the transcript so it appears at the
575	// bottom of the chat area (right above the status bar / editor).
576	// Prepending it would push long conversations off the top of the
577	// viewport, which users would miss entirely.
578	if len(i.helpBlock) > 0 {
579		chat = append(chat, i.helpBlock...)
580	}
581
582	if i.statusOK != "" {
583		// Hard-truncate the OK line to the visible width so a long
584		// session path ("resumed session: /Users/.../sessions/...")
585		// doesn't overflow past the right edge and look broken on a
586		// narrow terminal.
587		line := "✓ " + i.statusOK
588		if cols > 4 && len(line) > cols {
589			line = line[:cols-1] + "…"
590		}
591		chat = append(chat, i.cfg.Theme.FG256(i.cfg.Theme.Tool, line), "")
592	}
593
594	// Extension notes (notify / display) live just under the
595	// transcript, above the dialog/editor band. Cleared by /clear.
596	if len(i.extNotes) > 0 {
597		chat = append(chat, i.extNotes...)
598		chat = append(chat, "")
599	}
600
601	// Dialogs (login or model picker) render between chat and the editor.
602	var dialog []string
603	switch {
604	case i.dialog.Active():
605		dialog = i.dialog.Render(i.cfg.Theme, cols)
606	case i.modelDialog.Active():
607		dialog = i.modelDialog.Render(i.cfg.Theme, cols)
608	case i.sessionDialog.Active():
609		dialog = i.sessionDialog.Render(i.cfg.Theme, cols)
610	case i.jumpDialog.Active():
611		dialog = i.jumpDialog.Render(i.cfg.Theme, cols)
612	case i.btwDialog.Active():
613		dialog = i.btwDialog.Render(i.cfg.Theme, cols)
614	case i.skillsDialog.Active():
615		dialog = i.skillsDialog.Render(i.cfg.Theme, cols)
616	case i.changelogDialog.Active():
617		dialog = i.changelogDialog.Render(i.cfg.Theme, cols)
618	case i.confirmDialog.Active():
619		dialog = i.confirmDialog.Render(i.cfg.Theme, cols)
620	case i.logoutDialog.Active():
621		dialog = i.logoutDialog.Render(i.cfg.Theme, cols)
622	case i.telegramDialog.Active():
623		dialog = i.telegramDialog.Render(i.cfg.Theme, cols)
624	case i.sessionOpsDialog.Active():
625		dialog = i.sessionOpsDialog.Render(i.cfg.Theme, cols)
626	case i.sessionTreeDialog.Active():
627		dialog = i.sessionTreeDialog.Render(i.cfg.Theme, cols)
628	}
629
630	// Slash-command autocomplete: popup above the status line, only
631	// when the editor starts with "/" and no dialog is already open.
632	// Feed extension-registered commands into the suggester first so
633	// they show up in tab-complete + the popup alongside the built-ins.
634	if i.cfg.Extensions != nil {
635		catalog := i.cfg.Extensions.Commands()
636		extra := make([]slashCommand, 0, len(catalog))
637		for _, c := range catalog {
638			// The popup renders extension commands under a dedicated
639			// "── extensions ───" divider, so the description doesn't
640			// need to repeat the source. If the description is empty,
641			// fall back to the extension name so the row isn't blank.
642			desc := c.Description
643			if strings.TrimSpace(desc) == "" {
644				desc = "(" + c.Extension + ")"
645			}
646			extra = append(extra, slashCommand{
647				Name: "/" + c.Name,
648				Desc: desc,
649			})
650		}
651		i.suggest.SetExtra(extra)
652	}
653	var suggest []string
654	currentInput := i.ed.Value()
655	if len(dialog) == 0 && i.suggest.Active(currentInput) && !i.busy {
656		suggest = i.suggest.Render(currentInput, i.cfg.Theme, cols)
657	}
658
659	// Busy prefix shown at the far left of the status bar. The
660	// spinner glyph and its funny-line message share the `zot`
661	// label colour (Theme.Assistant) so the whole "who's working"
662	// band reads at a glance. Elapsed time stays muted because it
663	// drifts every second and shouldn't grab focus.
664	var busyPrefix string
665	if i.busy {
666		busyPrefix = fmt.Sprintf("%s %s · %s",
667			i.cfg.Theme.FG256(i.cfg.Theme.Assistant, i.spin.Frame()),
668			i.cfg.Theme.FG256(i.cfg.Theme.Assistant, i.spin.Message()),
669			i.cfg.Theme.FG256(i.cfg.Theme.Muted, i.spin.Elapsed().String()),
670		)
671	}
672
673	ctxMax := 0
674	if m, err := provider.FindModel(i.cfg.Provider, i.cfg.Model); err == nil {
675		ctxMax = m.ContextWindow
676	}
677	statusLines := tui.StatusBar(tui.StatusBarParams{
678		Theme:          i.cfg.Theme,
679		Provider:       i.cfg.Provider,
680		Model:          i.cfg.Model,
681		Busy:           i.busy,
682		BusyPrefix:     busyPrefix,
683		CWD:            i.cfg.CWD,
684		Locked:         i.cfg.Sandbox.Locked(),
685		Usage:          i.cumUsage,
686		Subscription:   i.cfg.AuthMethod == "oauth",
687		ContextUsed:    i.lastCtxInput,
688		ContextMax:     ctxMax,
689		AutoCompacting: i.autoCompacting,
690		Telegram:       i.telegramBridge != nil && i.telegramBridge.Active(),
691		Cols:           cols,
692	})
693	edLines, curR, curC := i.ed.Render(cols)
694
695	// "Sliding in" chips for messages the user typed while a turn is
696	// in flight. Shown directly above the status bar so they're close
697	// to the editor but don't push the chat around.
698	var queue []string
699	if len(i.queued) > 0 {
700		for _, q := range i.queued {
701			label := i.cfg.Theme.FG256(i.cfg.Theme.Accent, "▸ sliding in: ")
702			text := truncateLine(q, cols-15)
703			queue = append(queue, label+i.cfg.Theme.FG256(i.cfg.Theme.Muted, text))
704		}
705	}
706
707	// Bottom-sticky sections (always visible, never scroll).
708	bottom := make([]string, 0, len(dialog)+len(suggest)+len(queue)+len(edLines)+1)
709	bottom = append(bottom, dialog...)
710	bottom = append(bottom, suggest...)
711	bottom = append(bottom, queue...)
712	bottom = append(bottom, statusLines...)
713	bottom = append(bottom, edLines...)
714
715	_, rows := i.cfg.Terminal.Size()
716	chatRows := rows - len(bottom)
717	if chatRows < 1 {
718		chatRows = 1
719	}
720
721	// Apply scroll offset to the chat slice.
722	maxOffset := len(chat) - chatRows
723	if maxOffset < 0 {
724		maxOffset = 0
725	}
726	if i.scrollOffset > maxOffset {
727		i.scrollOffset = maxOffset
728	}
729	if i.scrollOffset < 0 {
730		i.scrollOffset = 0
731	}
732
733	var visibleChat []string
734	if len(chat) <= chatRows {
735		visibleChat = chat
736	} else {
737		end := len(chat) - i.scrollOffset
738		start := end - chatRows
739		if start < 0 {
740			start = 0
741		}
742		visibleChat = chat[start:end]
743	}
744
745	// A tiny "scrolled up" indicator in the top-right of the chat pane
746	// so you know you're not at the bottom. When the viewport was
747	// parked by /jump we include the turn number so the user remembers
748	// they're reading history rather than the live conversation.
749	if i.scrollOffset > 0 && len(visibleChat) > 0 {
750		var text string
751		if i.parkedTurn > 0 && i.parkedTotal > 0 {
752			text = fmt.Sprintf("  ↑ viewing turn %d of %d · %d lines more below (pgdn / end)",
753				i.parkedTurn, i.parkedTotal, i.scrollOffset)
754		} else {
755			text = fmt.Sprintf("  ↑ %d lines more below (end to jump)", i.scrollOffset)
756		}
757		note := i.cfg.Theme.FG256(i.cfg.Theme.Muted, text)
758		visibleChat = append([]string{note}, visibleChat...)
759		if len(visibleChat) > chatRows {
760			visibleChat = visibleChat[:chatRows]
761		}
762	}
763
764	frame := make([]string, 0, len(visibleChat)+len(bottom))
765	frame = append(frame, visibleChat...)
766	frame = append(frame, bottom...)
767
768	cursorRow := len(visibleChat) + len(dialog) + len(suggest) + len(queue) + len(statusLines) + curR
769	cursorCol := curC
770	i.rend.Draw(frame, cursorRow, cursorCol)
771}
772
773// truncateLine shortens s so it fits within n display cells, with an
774// ellipsis if trimmed. Used by the "sliding in" chips so a pasted
775// novel doesn't blow past the status line.
776func truncateLine(s string, n int) string {
777	if n <= 0 {
778		return ""
779	}
780	// Collapse newlines — chips are single line.
781	s = strings.ReplaceAll(s, "\n", " ↩ ")
782	runes := []rune(s)
783	if len(runes) <= n {
784		return s
785	}
786	if n <= 1 {
787		return "…"
788	}
789	return string(runes[:n-1]) + "…"
790}
791
792// ctrlCExitWindow is how long after a ctrl+c press a *second* press
793// will exit instead of just clearing input. Long enough to be
794// deliberate (rules out accidental key chord), short enough that the
795// hint stays meaningful.
796const ctrlCExitWindow = 2 * time.Second
797
798// armCtrlCExit records the timestamp of the current ctrl+c so the next
799// one within ctrlCExitWindow exits.
800func (i *Interactive) armCtrlCExit() {
801	i.mu.Lock()
802	i.lastCtrlC = time.Now()
803	i.mu.Unlock()
804}
805
806// ctrlCExitArmed reports whether a previous ctrl+c was recent enough
807// that another press should now exit.
808func (i *Interactive) ctrlCExitArmed() bool {
809	i.mu.Lock()
810	t := i.lastCtrlC
811	i.mu.Unlock()
812	return !t.IsZero() && time.Since(t) <= ctrlCExitWindow
813}
814
815func (i *Interactive) handleKey(ctx context.Context, k tui.Key) (done bool) {
816	// Any key that isn't ctrl+c invalidates an armed ctrl+c-exit, so
817	// pressing ctrl+c then typing then ctrl+c much later doesn't quit
818	// unexpectedly. The hint message also goes stale; clear it.
819	if k.Kind != tui.KeyCtrlC {
820		i.mu.Lock()
821		if !i.lastCtrlC.IsZero() {
822			i.lastCtrlC = time.Time{}
823			if strings.HasPrefix(i.statusOK, "input cleared") || strings.HasPrefix(i.statusOK, "press ctrl+c") {
824				i.statusOK = ""
825			}
826		}
827		i.mu.Unlock()
828	}
829
830	// Dialogs consume keys while open (except ctrl+c, which always closes them).
831
832	// Confirm dialog has highest priority: the agent goroutine is
833	// blocked waiting for an answer, so we must not let keys leak
834	// anywhere else while it's up.
835	if i.confirmDialog.Active() {
836		i.confirmDialog.HandleKey(k)
837		i.invalidate()
838		return false
839	}
840	if i.dialog.Active() {
841		if k.Kind == tui.KeyCtrlC {
842			i.dialog.Close()
843			if i.cfg.AuthManager != nil {
844				i.cfg.AuthManager.CancelOAuth()
845			}
846			return false
847		}
848		act := i.dialog.HandleKey(k)
849		if act.StartAPIKey {
850			i.startAPIKeyFlow(act.Provider)
851		}
852		if act.StartOAuth {
853			i.startOAuthFlow(act.Provider)
854		}
855		return false
856	}
857	if i.modelDialog.Active() {
858		if k.Kind == tui.KeyCtrlC {
859			i.modelDialog.Close()
860			return false
861		}
862		act := i.modelDialog.HandleKey(k)
863		if act.Select {
864			i.applyModelSelection(act.Provider, act.Model)
865		}
866		return false
867	}
868	if i.sessionDialog.Active() {
869		if k.Kind == tui.KeyCtrlC {
870			i.sessionDialog.Close()
871			return false
872		}
873		act := i.sessionDialog.HandleKey(k)
874		if act.Select {
875			i.applySessionSelection(act.Path)
876		}
877		return false
878	}
879	if i.logoutDialog.Active() {
880		if k.Kind == tui.KeyCtrlC {
881			i.logoutDialog.Close()
882			i.invalidate()
883			return false
884		}
885		act := i.logoutDialog.HandleKey(k)
886		if act.Select {
887			i.doLogout(act.Target)
888		}
889		i.invalidate()
890		return false
891	}
892	if i.telegramDialog.Active() {
893		if k.Kind == tui.KeyCtrlC {
894			i.telegramDialog.Close()
895			i.invalidate()
896			return false
897		}
898		act := i.telegramDialog.HandleKey(k)
899		if act.Select {
900			i.doTelegram(act.Action)
901		}
902		i.invalidate()
903		return false
904	}
905	if i.sessionOpsDialog.Active() {
906		if k.Kind == tui.KeyCtrlC {
907			i.sessionOpsDialog.Close()
908			i.invalidate()
909			return false
910		}
911		act := i.sessionOpsDialog.HandleKey(k)
912		if act.Select {
913			i.doSessionOp(act.Action, "")
914		}
915		i.invalidate()
916		return false
917	}
918	if i.sessionTreeDialog.Active() {
919		if k.Kind == tui.KeyCtrlC {
920			i.sessionTreeDialog.Close()
921			i.invalidate()
922			return false
923		}
924		act := i.sessionTreeDialog.HandleKey(k)
925		if act.Select {
926			i.applySessionTreeSelection(act.Path)
927		}
928		i.invalidate()
929		return false
930	}
931	if i.jumpDialog.Active() {
932		if k.Kind == tui.KeyCtrlC {
933			i.jumpDialog.Close()
934			i.pendingFork = false
935			return false
936		}
937		act := i.jumpDialog.HandleKey(k)
938		if act.Select {
939			if i.pendingFork {
940				i.applyForkSelection(act.MessageIdx)
941			} else {
942				i.applyJumpSelection(act.MessageIdx, act.TurnNo)
943			}
944		}
945		// If the user dismissed the dialog without selecting, also
946		// clear the pending-fork flag so a later plain /jump isn't
947		// hijacked.
948		if act.Close {
949			i.pendingFork = false
950		}
951		return false
952	}
953	if i.btwDialog.Active() {
954		if k.Kind == tui.KeyCtrlC {
955			i.btwDialog.Close()
956			i.invalidate()
957			return false
958		}
959		i.btwDialog.HandleKey(k, i.invalidate)
960		return false
961	}
962	if i.skillsDialog.Active() {
963		if k.Kind == tui.KeyCtrlC {
964			i.skillsDialog.Close()
965			i.invalidate()
966			return false
967		}
968		i.skillsDialog.HandleKey(k)
969		i.invalidate()
970		return false
971	}
972	if i.changelogDialog.Active() {
973		if closed := i.changelogDialog.HandleKey(k); closed {
974			// User dismissed; let the parent persist the
975			// LastChangelogShown marker via the close callback.
976			if i.cfg.OnChangelogDismiss != nil {
977				i.cfg.OnChangelogDismiss()
978			}
979		}
980		i.invalidate()
981		return false
982	}
983
984	// Global keys.
985	switch k.Kind {
986	case tui.KeyCtrlC:
987		// While busy: cancel the active turn (same as esc). The exit
988		// hint stays armed so a quick second ctrl+c after the turn
989		// dies still exits, matching habits from other repls.
990		if i.busy && i.cancelTurn != nil {
991			i.cancelTurn()
992			i.armCtrlCExit()
993			return false
994		}
995		// Idle: first press clears the editor (and any queued
996		// follow-up messages); a second press within ctrlCExitWindow
997		// exits. With both an empty editor and no queue the first
998		// press still just arms — require a deliberate double-tap.
999		hadInput := !i.ed.IsEmpty() || len(i.queued) > 0
1000		if hadInput {
1001			i.ed.Clear()
1002			i.suggest.Reset()
1003			i.mu.Lock()
1004			i.queued = nil
1005			i.statusOK = "input cleared"
1006			i.statusErr = ""
1007			i.mu.Unlock()
1008			i.armCtrlCExit()
1009			return false
1010		}
1011		if i.ctrlCExitArmed() {
1012			return true
1013		}
1014		i.mu.Lock()
1015		i.statusOK = "press ctrl+c again to exit"
1016		i.statusErr = ""
1017		i.mu.Unlock()
1018		i.armCtrlCExit()
1019		return false
1020	case tui.KeyEsc:
1021		// Esc interrupts a running turn. When idle, fall through so the
1022		// editor can clear itself.
1023		if i.busy && i.cancelTurn != nil {
1024			i.cancelTurn()
1025			// If a confirm dialog is pending, refuse it so the agent
1026			// goroutine unblocks and the context cancellation can
1027			// actually take effect.
1028			i.confirmDialog.CancelAll("turn cancelled")
1029			return false
1030		}
1031	case tui.KeyCtrlD:
1032		if i.ed.IsEmpty() && !i.busy {
1033			return true
1034		}
1035	case tui.KeyCtrlL:
1036		i.rend.Clear()
1037		i.invalidate()
1038		return false
1039	case tui.KeyCtrlO:
1040		// Toggle expansion of collapsed tool results. Affects every tool
1041		// call in the transcript — press again to re-collapse.
1042		i.mu.Lock()
1043		i.view.ExpandAll = !i.view.ExpandAll
1044		i.mu.Unlock()
1045		i.invalidate()
1046		return false
1047	case tui.KeyPageUp:
1048		i.scrollBy(+i.chatPage())
1049		return false
1050	case tui.KeyPageDown:
1051		i.scrollBy(-i.chatPage())
1052		return false
1053	case tui.KeyUp:
1054		// Wheel-up in alt screen sends Up arrows on most terminals.
1055		// When the editor is empty we use up/down for chat scroll —
1056		// independently of whether the agent is busy, so users can
1057		// scroll back through long streaming replies while they run.
1058		if i.ed.IsEmpty() {
1059			i.scrollBy(+3)
1060			return false
1061		}
1062	case tui.KeyDown:
1063		if i.ed.IsEmpty() {
1064			if i.scrollOffset > 0 {
1065				i.scrollBy(-3)
1066			}
1067			return false
1068		}
1069	}
1070
1071	// Note: we intentionally do NOT gate the editor on i.busy here.
1072	// Typing while the agent is working is supported — submitted
1073	// messages are queued and delivered as follow-up turns when the
1074	// current turn ends. See the submit handler below.
1075
1076	if k.Kind == tui.KeyEnter && k.Alt {
1077		i.ed.HandleKey(tui.Key{Kind: tui.KeyRune, Rune: '\n', Alt: true})
1078		return false
1079	}
1080
1081	// Slash suggestions: intercept up/down/tab/enter when the popup is visible.
1082	if i.suggest.Active(i.ed.Value()) {
1083		switch k.Kind {
1084		case tui.KeyUp:
1085			i.suggest.Up()
1086			return false
1087		case tui.KeyDown:
1088			i.suggest.Down()
1089			return false
1090		case tui.KeyTab:
1091			if name := i.suggest.Selection(i.ed.Value()); name != "" {
1092				i.ed.SetValue(name)
1093				i.suggest.Reset()
1094			}
1095			return false
1096		case tui.KeyEnter:
1097			// Enter on an ambiguous or partial slash prefix: complete to the
1098			// currently highlighted command and run it. That way typing
1099			// "/lo" + enter picks whichever of /login or /logout is selected
1100			// in the popup instead of submitting "/lo" as unknown. Also
1101			// clear the editor so the command doesn't linger after the
1102			// dialog opens/closes.
1103			if name := i.suggest.Selection(i.ed.Value()); name != "" {
1104				i.ed.PushHistory(name)
1105				i.ed.Clear()
1106				i.suggest.Reset()
1107				return i.runSlash(ctx, name)
1108			}
1109		case tui.KeyEsc:
1110			i.ed.Clear()
1111			i.suggest.Reset()
1112			return false
1113		}
1114	}
1115
1116	if submit := i.ed.HandleKey(k); submit {
1117		text := strings.TrimRight(i.ed.Value(), "\n")
1118		if text == "" {
1119			return false
1120		}
1121		i.ed.PushHistory(text)
1122		i.ed.Clear()
1123		i.suggest.Reset()
1124
1125		if looksLikeSlashCommand(text) {
1126			head := text
1127			rest := ""
1128			if idx := strings.IndexAny(text, " \t"); idx >= 0 {
1129				head = text[:idx]
1130				rest = strings.TrimSpace(text[idx:])
1131			}
1132			if !isKnownSlashCommand(text) {
1133				// Try extensions before giving up. Extensions register
1134				// commands by bare name (no leading slash); strip it here.
1135				extName := strings.TrimPrefix(head, "/")
1136				if i.cfg.Extensions != nil && i.cfg.Extensions.HasCommand(extName) {
1137					go i.invokeExtensionCommand(ctx, extName, rest)
1138					return false
1139				}
1140				i.mu.Lock()
1141				i.statusErr = "unknown command " + head + " — type /help to see the list"
1142				i.statusOK = ""
1143				i.mu.Unlock()
1144				return false
1145			}
1146			// Slash commands run regardless of busy state. Commands that
1147			// would mutate the transcript or replace the agent (/clear,
1148			// /compact, /logout, /login, /model) cancel the active turn
1149			// first and wait for the goroutine to wind down so they don't
1150			// race with a streaming response. Safe commands (/help,
1151			// /jump, /sessions, /jail, /unjail, /exit) run immediately
1152			// without disturbing the active turn.
1153			if slashCancelsTurn(head) {
1154				i.cancelAndWaitForIdle()
1155			}
1156			return i.runSlash(ctx, text)
1157		}
1158
1159		if i.agent == nil {
1160			i.mu.Lock()
1161			i.statusErr = "not logged in. type /login first."
1162			i.mu.Unlock()
1163			return false
1164		}
1165		// Mirror the user's typed prompt into the paired Telegram
1166		// chat (when the bridge is active) so the Telegram thread
1167		// stays a complete record of the session, not just the half
1168		// that originated on the phone. On a goroutine so the
1169		// network write doesn't delay the local turn.
1170		if i.telegramBridge != nil && i.telegramBridge.Active() {
1171			go i.telegramBridge.OnUserTyped(text)
1172		}
1173		// If a turn is already in flight, queue this prompt instead of
1174		// starting a second one. The drain loop at the end of startTurn
1175		// will pick it up when the current turn finishes.
1176		i.mu.Lock()
1177		if i.busy {
1178			i.queued = append(i.queued, text)
1179			i.mu.Unlock()
1180			i.invalidate()
1181			return false
1182		}
1183		i.mu.Unlock()
1184		i.startTurn(ctx, text)
1185	}
1186	return false
1187}
1188
1189// invokeExtensionCommand fires an extension-registered slash command
1190// in a background goroutine, awaits the response, and applies the
1191// requested action (prompt / insert / display / noop). Errors and
1192// timeouts surface as a status_err line.
1193func (i *Interactive) invokeExtensionCommand(ctx context.Context, name, args string) {
1194	resp, err := i.cfg.Extensions.Invoke(ctx, name, args, 30*time.Second)
1195	if err != nil {
1196		i.mu.Lock()
1197		i.statusErr = "extension /" + name + ": " + err.Error()
1198		i.statusOK = ""
1199		i.mu.Unlock()
1200		i.invalidate()
1201		return
1202	}
1203	if resp.Error != "" {
1204		i.mu.Lock()
1205		i.statusErr = "extension /" + name + ": " + resp.Error
1206		i.statusOK = ""
1207		i.mu.Unlock()
1208		i.invalidate()
1209		return
1210	}
1211	switch resp.Action {
1212	case "prompt":
1213		if strings.TrimSpace(resp.Prompt) == "" {
1214			return
1215		}
1216		i.startTurn(i.runCtx, resp.Prompt)
1217	case "insert":
1218		i.ed.Insert(resp.Insert)
1219		i.invalidate()
1220	case "display":
1221		i.appendExtensionNote(name, resp.Display, "info")
1222	case "noop", "":
1223		// nothing
1224	default:
1225		i.mu.Lock()
1226		i.statusErr = "extension /" + name + ": unknown action " + resp.Action
1227		i.mu.Unlock()
1228		i.invalidate()
1229	}
1230}
1231
1232// appendExtensionNote renders an extension-originated note in the
1233// chat. Levels: "info" (muted), "warn" (warning), "error" (error),
1234// "success" (tool/ok green).
1235func (i *Interactive) appendExtensionNote(extName, msg, level string) {
1236	if msg == "" {
1237		return
1238	}
1239	i.mu.Lock()
1240	defer i.mu.Unlock()
1241	color := i.cfg.Theme.Muted
1242	switch level {
1243	case "warn":
1244		color = i.cfg.Theme.Warning
1245	case "error":
1246		color = i.cfg.Theme.Error
1247	case "success":
1248		color = i.cfg.Theme.Tool
1249	}
1250	prefix := i.cfg.Theme.FG256(i.cfg.Theme.Accent, "["+extName+"] ")
1251	for _, line := range strings.Split(msg, "\n") {
1252		i.statusOK = "" // clear any stale ok
1253		i.statusErr = ""
1254		i.extNotes = append(i.extNotes, prefix+i.cfg.Theme.FG256(color, line))
1255	}
1256}
1257
1258// HostHooks implementation for the extension manager. The manager
1259// holds an interface, not a concrete *Interactive, so these methods
1260// are the only thing the manager sees.
1261
1262// Notify is the manager's NotifyFromExt entry point.
1263func (i *Interactive) Notify(extName, level, message string) {
1264	i.appendExtensionNote(extName, message, level)
1265	i.invalidate()
1266}
1267
1268// Submit feeds text through the agent loop as if the user had typed it.
1269func (i *Interactive) Submit(text string) {
1270	i.startTurn(i.runCtx, text)
1271}
1272
1273// SubmitOrQueue runs text immediately if the agent is idle, or
1274// appends it to the pending queue if a turn is already in flight.
1275// Used by the telegram bridge (and by the editor submit path) so
1276// both input sources share the same "queue behind an active turn"
1277// semantics. Images are ignored for now — only the text prompt is
1278// forwarded — because the queued-prompt path is text-only; a
1279// follow-up can expand the queue entry to carry images.
1280func (i *Interactive) SubmitOrQueue(text string, images []provider.ImageBlock) {
1281	_ = images // reserved for future queued-with-images support
1282	i.mu.Lock()
1283	if i.agent == nil {
1284		i.statusErr = "not logged in. type /login first."
1285		i.mu.Unlock()
1286		i.invalidate()
1287		return
1288	}
1289	if i.busy {
1290		i.queued = append(i.queued, text)
1291		i.mu.Unlock()
1292		i.invalidate()
1293		return
1294	}
1295	i.mu.Unlock()
1296	i.startTurn(i.runCtx, text)
1297}
1298
1299// CancelTurn aborts the active turn if one is running. Used by the
1300// telegram bridge when the paired user sends /stop.
1301func (i *Interactive) CancelTurn() {
1302	i.mu.Lock()
1303	cancel := i.cancelTurn
1304	i.mu.Unlock()
1305	if cancel != nil {
1306		cancel()
1307	}
1308}
1309
1310// Insert places text at the cursor in the editor.
1311func (i *Interactive) Insert(text string) {
1312	i.ed.Insert(text)
1313	i.invalidate()
1314}
1315
1316// Display appends a styled note from extName to the chat without a
1317// model call.
1318func (i *Interactive) Display(extName, text string) {
1319	i.appendExtensionNote(extName, text, "info")
1320	i.invalidate()
1321}
1322
1323func (i *Interactive) runSlash(ctx context.Context, cmd string) (done bool) {
1324	parts := strings.Fields(cmd)
1325	switch parts[0] {
1326	case "/exit":
1327		return true
1328	case "/clear":
1329		if i.agent != nil {
1330			i.agent.SetMessages(nil)
1331		}
1332		i.mu.Lock()
1333		i.toolCalls = map[string]*tui.ToolCallView{}
1334		i.toolOrder = nil
1335		i.statusErr = ""
1336		i.statusOK = ""
1337		i.helpBlock = nil
1338		i.parkedTurn = 0
1339		i.parkedTotal = 0
1340		i.scrollOffset = 0
1341		i.extNotes = nil
1342		i.view.InvalidateRenderCache()
1343		i.mu.Unlock()
1344	case "/help":
1345		i.mu.Lock()
1346		i.helpBlock = renderHelpBlock(i.cfg.Theme, i.lastCols())
1347		i.statusErr = ""
1348		i.statusOK = ""
1349		// Pin the viewport to the newest content so the help block,
1350		// which we just appended to the end of the transcript, is
1351		// what the user actually sees.
1352		i.scrollOffset = 0
1353		i.mu.Unlock()
1354	case "/login":
1355		i.dialog.Open()
1356	case "/logout":
1357		if len(parts) >= 2 {
1358			// Explicit target: /logout anthropic | openai | all
1359			i.doLogout(parts[1])
1360			break
1361		}
1362		// No arg: open the picker over whichever providers are
1363		// currently logged in. If nothing's logged in, bail with a
1364		// status line.
1365		i.openLogoutDialog()
1366	case "/model":
1367		if len(parts) >= 2 {
1368			i.applyModelSelection("", parts[1])
1369		} else {
1370			i.modelDialog.Open(i.cfg.Model)
1371		}
1372	case "/sessions":
1373		i.sessionDialog.Open(i.cfg.ZotHome, i.cfg.CWD)
1374	case "/jump":
1375		i.openJumpDialog(parts[1:])
1376	case "/btw":
1377		i.openBtwDialog(parts[1:])
1378	case "/skills":
1379		i.openSkillsDialog()
1380	case "/compact":
1381		i.runCompact(ctx, false)
1382	case "/jail":
1383		if i.cfg.Sandbox == nil {
1384			i.mu.Lock()
1385			i.statusErr = "sandbox not available in this build"
1386			i.mu.Unlock()
1387			break
1388		}
1389		i.cfg.Sandbox.Lock()
1390		i.mu.Lock()
1391		i.statusOK = "jailed to " + i.cfg.CWD + " (tools cannot touch paths outside this directory)"
1392		i.statusErr = ""
1393		i.mu.Unlock()
1394	case "/unjail":
1395		if i.cfg.Sandbox == nil {
1396			i.mu.Lock()
1397			i.statusErr = "sandbox not available in this build"
1398			i.mu.Unlock()
1399			break
1400		}
1401		i.cfg.Sandbox.Unlock()
1402		i.mu.Lock()
1403		i.statusOK = "unjailed"
1404		i.statusErr = ""
1405		i.mu.Unlock()
1406	case "/reload-ext":
1407		i.runReloadExt(ctx)
1408	case "/yolo":
1409		i.runYoloOn()
1410	case "/telegram", "/tg":
1411		if len(parts) >= 2 {
1412			i.doTelegram(parts[1])
1413			break
1414		}
1415		i.openTelegramDialog()
1416	case "/session":
1417		if len(parts) >= 2 {
1418			action := parts[1]
1419			arg := ""
1420			if len(parts) >= 3 {
1421				arg = strings.Join(parts[2:], " ")
1422			}
1423			i.doSessionOp(action, arg)
1424			break
1425		}
1426		i.openSessionOpsDialog()
1427	default:
1428		// Last-resort fallback: try the extension manager. Built-in
1429		// cases above always win; this branch only fires for slash
1430		// commands the extension manager registered. Same routing as
1431		// the editor's submit-handler dispatch path so the autocomplete
1432		// "enter on highlighted suggestion" flow also works.
1433		extName := strings.TrimPrefix(parts[0], "/")
1434		if i.cfg.Extensions != nil && i.cfg.Extensions.HasCommand(extName) {
1435			rest := ""
1436			if len(parts) > 1 {
1437				rest = strings.Join(parts[1:], " ")
1438			}
1439			go i.invokeExtensionCommand(ctx, extName, rest)
1440			return false
1441		}
1442		i.mu.Lock()
1443		i.statusErr = "unknown command: " + parts[0]
1444		i.mu.Unlock()
1445	}
1446	return false
1447}
1448
1449// openLogoutDialog shows the provider picker for `/logout` with no
1450// argument. Only providers the user is currently logged into are
1451// listed, plus an "all" entry when more than one is present. If
1452// nothing's logged in, writes a status line instead of opening an
1453// empty dialog.
1454func (i *Interactive) openLogoutDialog() {
1455	if i.cfg.AuthManager == nil {
1456		i.mu.Lock()
1457		i.statusErr = "no auth manager configured"
1458		i.mu.Unlock()
1459		i.invalidate()
1460		return
1461	}
1462	store := i.cfg.AuthManager.Store()
1463	if store == nil {
1464		i.mu.Lock()
1465		i.statusErr = "auth store is not available"
1466		i.mu.Unlock()
1467		i.invalidate()
1468		return
1469	}
1470	creds, err := store.Load()
1471	if err != nil {
1472		i.mu.Lock()
1473		i.statusErr = "read auth store: " + err.Error()
1474		i.mu.Unlock()
1475		i.invalidate()
1476		return
1477	}
1478
1479	var items []logoutItem
1480	for _, p := range []string{"anthropic", "openai"} {
1481		if creds.Has(p) {
1482			items = append(items, logoutItem{
1483				label:  p,
1484				target: p,
1485				method: creds.Method(p),
1486			})
1487		}
1488	}
1489	if len(items) == 0 {
1490		i.mu.Lock()
1491		i.statusOK = "no credentials stored; already logged out"
1492		i.statusErr = ""
1493		i.mu.Unlock()
1494		i.invalidate()
1495		return
1496	}
1497	if len(items) > 1 {
1498		items = append(items, logoutItem{label: "all", target: "all"})
1499	}
1500
1501	i.logoutDialog.Open(items)
1502	i.invalidate()
1503}
1504
1505// doLogout clears credentials for the given provider (or all providers)
1506// from auth.json. If the active agent was using those credentials, it
1507// is torn down so the user is forced through /login before their next
1508// prompt.
1509//
1510// target: "anthropic" | "openai" | "all"
1511func (i *Interactive) doLogout(target string) {
1512	if i.cfg.AuthManager == nil {
1513		i.mu.Lock()
1514		i.statusErr = "no auth manager configured"
1515		i.mu.Unlock()
1516		return
1517	}
1518	store := i.cfg.AuthManager.Store()
1519	if store == nil {
1520		i.mu.Lock()
1521		i.statusErr = "auth store is not available"
1522		i.mu.Unlock()
1523		return
1524	}
1525
1526	var providers []string
1527	switch target {
1528	case "", "all":
1529		providers = []string{"anthropic", "openai"}
1530	case "anthropic", "openai":
1531		providers = []string{target}
1532	default:
1533		i.mu.Lock()
1534		i.statusErr = "unknown provider: " + target + " (use anthropic, openai, or all)"
1535		i.mu.Unlock()
1536		return
1537	}
1538
1539	var errs []string
1540	clearedCurrent := false
1541	for _, p := range providers {
1542		if err := store.Clear(p); err != nil {
1543			errs = append(errs, p+": "+err.Error())
1544			continue
1545		}
1546		if p == i.cfg.Provider {
1547			clearedCurrent = true
1548		}
1549	}
1550
1551	i.mu.Lock()
1552	defer i.mu.Unlock()
1553	if len(errs) > 0 {
1554		i.statusErr = "logout errors: " + strings.Join(errs, "; ")
1555		return
1556	}
1557	i.statusErr = ""
1558	if clearedCurrent {
1559		// The running agent was using a credential we just wiped. Drop
1560		// it so prompts can't go out with the stale client, and hint at
1561		// /login.
1562		i.agent = nil
1563		i.statusOK = "logged out of " + strings.Join(providers, ", ") + ". type /login to sign back in."
1564	} else {
1565		i.statusOK = "logged out of " + strings.Join(providers, ", ")
1566	}
1567}
1568
1569func (i *Interactive) startAPIKeyFlow(provider string) {
1570	url, err := i.cfg.AuthManager.StartAPIKey(provider)
1571	if err != nil {
1572		i.dialog.ShowResult(false, err.Error())
1573		return
1574	}
1575	i.dialog.ShowWaiting(url)
1576}
1577
1578func (i *Interactive) startOAuthFlow(provider string) {
1579	url, err := i.cfg.AuthManager.StartOAuth(provider)
1580	if err != nil {
1581		i.dialog.ShowResult(false, err.Error())
1582		return
1583	}
1584	i.dialog.ShowWaiting(url)
1585}
1586
1587// applyModelSelection switches the active model (and provider, if the
1588// new model belongs to a different one). It rebuilds the underlying
1589// client when needed so the provider wire-protocol matches.
1590// cancelAndWaitForIdle cancels the active turn (if any) and blocks
1591// briefly until the turn goroutine has updated i.busy = false. Used
1592// before destructive slash commands so transcript-mutating work
1593// (/clear, /compact, /logout, /login completion, cross-provider
1594// /model swap) doesn't race with the still-running stream.
1595//
1596// The wait is bounded; if the turn doesn't release within the timeout
1597// we proceed anyway. Worst case is a brief overlap that the agent's
1598// own mutex protects against.
1599func (i *Interactive) cancelAndWaitForIdle() {
1600	i.mu.Lock()
1601	busy := i.busy
1602	cancel := i.cancelTurn
1603	i.mu.Unlock()
1604	if !busy {
1605		return
1606	}
1607	if cancel != nil {
1608		cancel()
1609	}
1610	deadline := time.Now().Add(2 * time.Second)
1611	for time.Now().Before(deadline) {
1612		i.mu.Lock()
1613		done := !i.busy
1614		i.mu.Unlock()
1615		if done {
1616			return
1617		}
1618		time.Sleep(10 * time.Millisecond)
1619	}
1620}
1621
1622// openBtwDialog opens the side-chat overlay with a frozen snapshot
1623// of the current main session. The optional argument is auto-
1624// submitted as the first question, so '/btw does X work?' fires the
1625// model call immediately instead of just opening an empty dialog.
1626func (i *Interactive) openBtwDialog(args []string) {
1627	if i.agent == nil {
1628		i.mu.Lock()
1629		i.statusErr = "not logged in. type /login first."
1630		i.mu.Unlock()
1631		return
1632	}
1633	seed := strings.TrimSpace(strings.Join(args, " "))
1634	i.btwDialog.Open(i.cfg.Theme, i.agent, i.agent.System, i.cfg.Model, seed)
1635	i.invalidate()
1636}
1637
1638// openSkillsDialog opens the skill inspector. The picker reflects
1639// whatever SkillSnapshot returns at call time, so edits to a
1640// SKILL.md made during a session show up on the next /skills.
1641func (i *Interactive) openSkillsDialog() {
1642	var list []*skills.Skill
1643	if i.cfg.SkillSnapshot != nil {
1644		list = i.cfg.SkillSnapshot()
1645	}
1646	i.skillsDialog.Open(list)
1647	i.invalidate()
1648}
1649
1650// openJumpDialog builds a /jump picker from the current transcript.
1651// If the user typed "/jump foo" with a filter and it matches exactly
1652// one turn, jump there directly without showing the dialog.
1653func (i *Interactive) openJumpDialog(args []string) {
1654	if i.view == nil || len(i.view.Messages) == 0 {
1655		i.mu.Lock()
1656		i.statusErr = "nothing to jump to \u2014 the session is empty"
1657		i.mu.Unlock()
1658		return
1659	}
1660	filter := strings.TrimSpace(strings.Join(args, " "))
1661	i.jumpDialog.Open(i.view.Messages, filter)
1662	// Shortcut: with a filter argument that matches exactly one turn,
1663	// jump immediately and skip the picker.
1664	if filter != "" {
1665		if tgts := i.jumpDialog.Targets(); len(tgts) == 1 {
1666			t := tgts[0]
1667			i.jumpDialog.Close()
1668			i.applyJumpSelection(t.MessageIdx, t.TurnNo)
1669		}
1670	}
1671}
1672
1673// applyJumpSelection scrolls the chat viewport so the user message at
1674// msgIdx is visible at (or near) the top of the chat area. Uses the
1675// anchor slice returned by view.BuildWithAnchors so the mapping from
1676// message index to row is exact, regardless of variable-height tool
1677// blocks above the target.
1678func (i *Interactive) applyJumpSelection(msgIdx, turnNo int) {
1679	cols := i.lastCols()
1680	chat, anchors := i.view.BuildWithAnchors(cols)
1681	var row int
1682	found := false
1683	for _, a := range anchors {
1684		if a.MessageIdx == msgIdx {
1685			row = a.Row
1686			found = true
1687			break
1688		}
1689	}
1690	if !found {
1691		i.mu.Lock()
1692		i.statusErr = "could not resolve jump target"
1693		i.mu.Unlock()
1694		return
1695	}
1696
1697	chatLen := len(chat)
1698	page := i.chatPage()
1699	if page < 1 {
1700		page = 1
1701	}
1702	// scrollOffset is measured from the bottom of the chat slice, so
1703	// to place `row` at the top of the viewport we want:
1704	//     chatLen - scrollOffset - page == row
1705	// Solve for scrollOffset and clamp to [0, chatLen-page].
1706	offset := chatLen - (row + page)
1707	if offset < 0 {
1708		offset = 0
1709	}
1710	maxOffset := chatLen - page
1711	if maxOffset < 0 {
1712		maxOffset = 0
1713	}
1714	if offset > maxOffset {
1715		offset = maxOffset
1716	}
1717
1718	i.mu.Lock()
1719	i.scrollOffset = offset
1720	i.parkedTurn = turnNo
1721	i.parkedTotal = totalTurnsLocked(i.view.Messages)
1722	i.statusOK = fmt.Sprintf("jumped to turn %d", turnNo)
1723	i.statusErr = ""
1724	i.mu.Unlock()
1725}
1726
1727// totalTurnsLocked counts user messages in the transcript. Caller is
1728// assumed to hold i.mu (the name is a mild reminder; this function
1729// itself doesn't touch shared state beyond the slice it's handed).
1730func totalTurnsLocked(msgs []provider.Message) int {
1731	n := 0
1732	for _, m := range msgs {
1733		if m.Role == provider.RoleUser {
1734			n++
1735		}
1736	}
1737	return n
1738}
1739
1740// applySessionSelection loads the given session via the cli-provided
1741// callback and parks the viewport on the last turn so the user lands
1742// looking at where the conversation left off (their last prompt at the
1743// top of the chat, the assistant's last reply right below). Older
1744// history is one scroll up; pgdn or end snaps to the current tail.
1745//
1746// Without this, scrollOffset stayed at 0 (pinned to the live tail),
1747// which on a long resumed session showed only the last few rows of
1748// the final assistant message — the user read that as "only one liner
1749// happened, the resume didn't work".
1750func (i *Interactive) applySessionSelection(path string) {
1751	if i.cfg.LoadSession == nil {
1752		i.mu.Lock()
1753		i.statusErr = "session loading is not wired in this build"
1754		i.mu.Unlock()
1755		return
1756	}
1757	if err := i.cfg.LoadSession(path); err != nil {
1758		i.mu.Lock()
1759		i.statusErr = err.Error()
1760		i.mu.Unlock()
1761		return
1762	}
1763
1764	i.mu.Lock()
1765	i.statusOK = "resumed session: " + path
1766	i.statusErr = ""
1767	i.parkedTurn = 0
1768	i.parkedTotal = 0
1769	i.view.InvalidateRenderCache()
1770	// Pull the freshly-loaded transcript into the view so the anchor
1771	// math below sees the post-resume messages, not the empty pre-load
1772	// state. redraw() does the same on its next pass; we just front-run
1773	// it here to compute the scroll target.
1774	if i.agent != nil {
1775		i.view.Messages = i.agent.Messages()
1776	}
1777	msgs := i.view.Messages
1778	i.mu.Unlock()
1779
1780	i.scrollToLastTurn(msgs)
1781}
1782
1783// scrollToLastTurn parks the viewport at the most recent user turn,
1784// or at the top if the transcript has no user messages. Used after
1785// resume so the user lands looking at where they left off.
1786func (i *Interactive) scrollToLastTurn(msgs []provider.Message) {
1787	if len(msgs) == 0 {
1788		i.mu.Lock()
1789		i.scrollOffset = 0
1790		i.mu.Unlock()
1791		return
1792	}
1793	// Find the last user message index.
1794	lastUser := -1
1795	turnNo, totalTurns := 0, 0
1796	for idx, m := range msgs {
1797		if m.Role == provider.RoleUser {
1798			totalTurns++
1799			lastUser = idx
1800		}
1801	}
1802	if lastUser < 0 {
1803		i.mu.Lock()
1804		i.scrollOffset = 0
1805		i.mu.Unlock()
1806		return
1807	}
1808	turnNo = totalTurns
1809
1810	cols := i.lastCols()
1811	chat, anchors := i.view.BuildWithAnchors(cols)
1812	var row int
1813	found := false
1814	for _, a := range anchors {
1815		if a.MessageIdx == lastUser {
1816			row = a.Row
1817			found = true
1818			break
1819		}
1820	}
1821	if !found {
1822		i.mu.Lock()
1823		i.scrollOffset = 0
1824		i.mu.Unlock()
1825		return
1826	}
1827
1828	chatLen := len(chat)
1829	page := i.chatPage()
1830	if page < 1 {
1831		page = 1
1832	}
1833	offset := chatLen - (row + page)
1834	if offset < 0 {
1835		offset = 0
1836	}
1837	maxOffset := chatLen - page
1838	if maxOffset < 0 {
1839		maxOffset = 0
1840	}
1841	if offset > maxOffset {
1842		offset = maxOffset
1843	}
1844
1845	i.mu.Lock()
1846	i.scrollOffset = offset
1847	// Mark the parked-turn footer so the user sees "viewing turn N of
1848	// M · pgdn to catch up" — same affordance as /jump. Tells them at
1849	// a glance that they're looking at history, not the live tail.
1850	if offset > 0 {
1851		i.parkedTurn = turnNo
1852		i.parkedTotal = totalTurns
1853	}
1854	i.mu.Unlock()
1855	i.invalidate()
1856}
1857
1858func (i *Interactive) applyModelSelection(prov, model string) {
1859	if model == "" {
1860		return
1861	}
1862	m, err := provider.FindModel(prov, model)
1863	if err != nil {
1864		i.mu.Lock()
1865		i.statusErr = err.Error()
1866		i.mu.Unlock()
1867		return
1868	}
1869	// Same provider? Just swap the model on the existing agent.
1870	if i.agent != nil && m.Provider == i.cfg.Provider {
1871		i.mu.Lock()
1872		i.cfg.Model = m.ID
1873		i.agent.Model = m.ID
1874		i.statusOK = "model: " + m.ID
1875		i.statusErr = ""
1876		i.mu.Unlock()
1877		if i.cfg.PersistModel != nil {
1878			i.cfg.PersistModel(i.cfg.Provider, m.ID)
1879		}
1880		return
1881	}
1882	// Different provider: rebuild agent (needs credentials for target provider).
1883	if i.cfg.BuildAgentFor == nil {
1884		i.mu.Lock()
1885		i.statusErr = "cannot switch provider: no builder configured"
1886		i.mu.Unlock()
1887		return
1888	}
1889	// Snapshot the current transcript and cumulative usage BEFORE we
1890	// build the replacement agent so we can hand them off. Without
1891	// this the user perceives the entire session as wiped on a
1892	// cross-provider /model swap.
1893	var carryMsgs []provider.Message
1894	var carryCost provider.Usage
1895	if i.agent != nil {
1896		carryMsgs = i.agent.Messages()
1897		carryCost = i.agent.Cost()
1898	}
1899
1900	ag, p, md, err := i.cfg.BuildAgentFor(m.Provider, m.ID)
1901	if err != nil {
1902		i.mu.Lock()
1903		i.statusErr = err.Error()
1904		i.mu.Unlock()
1905		return
1906	}
1907
1908	// Replay the transcript and seed the cost on the freshly-built
1909	// agent. Messages travel cleanly between providers because they
1910	// use the same provider.Message shape; tool-call ids are local
1911	// to a turn so cross-provider continuation never confuses the
1912	// new model (it just sees the assistant's reply, no orphan
1913	// tool_use blocks because /model swaps are gated to idle state).
1914	if len(carryMsgs) > 0 {
1915		ag.SetMessages(carryMsgs)
1916	}
1917	ag.SeedCost(carryCost)
1918
1919	i.mu.Lock()
1920	i.agent = ag
1921	i.cfg.Provider = p
1922	i.cfg.Model = md
1923	i.statusOK = "switched to " + p + " / " + md
1924	i.statusErr = ""
1925	// Render cache keys are width+content based, so the new agent's
1926	// identical messages will reuse the existing entries. Nothing
1927	// to invalidate.
1928	i.mu.Unlock()
1929	if i.cfg.PersistModel != nil {
1930		i.cfg.PersistModel(p, md)
1931	}
1932}
1933
1934func (i *Interactive) handleAuthEvent(ev auth.Event) {
1935	switch ev.Kind {
1936	case "started":
1937		i.dialog.ShowWaiting(ev.URL)
1938	case "browser_open":
1939		// no-op
1940	case "error":
1941		i.dialog.ShowResult(false, ev.Message)
1942	case "success":
1943		// Rebuild the agent with the fresh credential.
1944		ag, prov, model, err := i.cfg.BuildAgent()
1945		if err != nil {
1946			i.dialog.ShowResult(false, err.Error())
1947			return
1948		}
1949		i.mu.Lock()
1950		i.agent = ag
1951		i.cfg.Provider = prov
1952		i.cfg.Model = model
1953		i.statusErr = ""
1954		i.statusOK = "logged in to " + ev.Provider + " via " + ev.Method
1955		i.mu.Unlock()
1956		i.dialog.ShowResult(true, "")
1957	}
1958}
1959
1960// runCompact invokes core.Agent.Compact and reflects the progress in
1961// the tui. It runs in a goroutine so the ui stays responsive; esc/ctrl+c
1962// cancel via the same cancelTurn channel used for normal turns.
1963//
1964// When auto is true the spinner message is pinned to "condensing
1965// history" and the status bar surfaces "(auto)" next to the context
1966// percentage so it's obvious the system triggered this, not the user.
1967func (i *Interactive) runCompact(parent context.Context, auto bool) {
1968	if i.agent == nil {
1969		i.mu.Lock()
1970		i.statusErr = "not logged in. type /login first."
1971		i.mu.Unlock()
1972		return
1973	}
1974	ctx, cancel := context.WithCancel(parent)
1975	i.mu.Lock()
1976	i.busy = true
1977	if auto {
1978		i.spin.StartFixed("condensing history")
1979		i.autoCompacting = true
1980		i.statusOK = "condensing history… (esc to cancel)"
1981	} else {
1982		i.spin.Start()
1983		i.statusOK = "compacting..."
1984	}
1985	i.cancelTurn = cancel
1986	i.statusErr = ""
1987	i.streaming.Reset()
1988	i.streamOn = true
1989	i.scrollOffset = 0
1990	i.helpBlock = nil
1991	i.mu.Unlock()
1992	i.invalidate()
1993
1994	go func() {
1995		sink := func(delta string) {
1996			i.mu.Lock()
1997			i.streaming.WriteString(delta)
1998			i.mu.Unlock()
1999			i.invalidate()
2000		}
2001		summary, err := i.agent.Compact(ctx, 4, sink)
2002		i.mu.Lock()
2003		i.busy = false
2004		i.streamOn = false
2005		i.streaming.Reset()
2006		i.cancelTurn = nil
2007		i.autoCompacting = false
2008		switch {
2009		case err != nil && ctx.Err() != nil:
2010			i.statusErr = ""
2011			if auto {
2012				i.statusOK = "auto-condense cancelled"
2013			} else {
2014				i.statusOK = "compaction cancelled"
2015			}
2016		case err != nil:
2017			i.statusErr = "compaction failed: " + err.Error()
2018			i.statusOK = ""
2019		default:
2020			i.statusErr = ""
2021			i.statusOK = fmt.Sprintf("compacted transcript (%d chars of summary)", len(summary))
2022			i.lastCtxInput = 0 // reset; next turn will get a fresh measurement
2023			i.toolCalls = map[string]*tui.ToolCallView{}
2024			i.toolOrder = nil
2025			// Transcript was rewritten in place — purge the per-message
2026			// render cache so stale entries keyed on the old messages
2027			// don't linger.
2028			i.view.InvalidateRenderCache()
2029		}
2030		i.mu.Unlock()
2031		i.invalidate()
2032	}()
2033}
2034
2035func (i *Interactive) startTurn(parent context.Context, prompt string) {
2036	if i.agent == nil {
2037		return
2038	}
2039	ctx, cancel := context.WithCancel(parent)
2040	i.mu.Lock()
2041	i.busy = true
2042	i.spin.Start()
2043	i.cancelTurn = cancel
2044	i.statusErr = ""
2045	i.statusOK = ""
2046	i.streaming.Reset()
2047	i.streamOn = true
2048	i.toolCalls = map[string]*tui.ToolCallView{}
2049	i.toolOrder = nil
2050	i.scrollOffset = 0 // jump back to the bottom on new turn
2051	i.parkedTurn = 0   // starting a turn clears the /jump parked state
2052	i.parkedTotal = 0
2053	i.helpBlock = nil // hide the help block once the user asks something
2054	i.mu.Unlock()
2055	i.invalidate()
2056
2057	sink := func(ev core.AgentEvent) {
2058		i.handleEvent(ev)
2059		i.invalidate()
2060	}
2061
2062	go func() {
2063		err := i.agent.Prompt(ctx, prompt, nil, sink)
2064		i.mu.Lock()
2065		i.busy = false
2066		i.streamOn = false
2067		i.cancelTurn = nil
2068		if err != nil && ctx.Err() == nil {
2069			i.statusErr = err.Error()
2070		}
2071		// Pop the next queued message, if any, and relaunch.
2072		var next string
2073		var hasNext bool
2074		if len(i.queued) > 0 && ctx.Err() == nil && err == nil {
2075			next, i.queued = i.queued[0], i.queued[1:]
2076			hasNext = true
2077		}
2078		// If the turn was cancelled or errored, drop the queue so the
2079		// user isn't bombarded with stale messages after an interrupt.
2080		if ctx.Err() != nil || err != nil {
2081			i.queued = nil
2082		}
2083		// Decide whether the next thing to do is an auto-compaction.
2084		// Only fires when the turn completed cleanly AND the queue is
2085		// empty (otherwise a queued message would race the condense).
2086		shouldAutoCompact := !hasNext && err == nil && ctx.Err() == nil && i.shouldAutoCompactLocked()
2087		i.mu.Unlock()
2088		i.invalidate()
2089		parent := i.runCtx
2090		if parent == nil {
2091			parent = context.Background()
2092		}
2093		switch {
2094		case hasNext:
2095			i.startTurn(parent, next)
2096		case shouldAutoCompact:
2097			i.runCompact(parent, true)
2098		}
2099	}()
2100}
2101
2102// autoCompactThreshold is the context-window fraction at which the
2103// agent will auto-compact after a turn ends. 0.85 leaves enough
2104// headroom for one more user prompt + response before we bump the
2105// hard limit.
2106const autoCompactThreshold = 0.85
2107
2108// shouldAutoCompactLocked reports whether the last turn pushed context
2109// usage past the auto-compact threshold. Must be called with i.mu
2110// held; it reads lastCtxInput and the current model's context window.
2111func (i *Interactive) shouldAutoCompactLocked() bool {
2112	if i.agent == nil {
2113		return false
2114	}
2115	if i.autoCompacting {
2116		return false
2117	}
2118	m, err := provider.FindModel(i.cfg.Provider, i.cfg.Model)
2119	if err != nil || m.ContextWindow <= 0 {
2120		return false
2121	}
2122	if i.lastCtxInput <= 0 {
2123		return false
2124	}
2125	return float64(i.lastCtxInput)/float64(m.ContextWindow) >= autoCompactThreshold
2126}
2127
2128func (i *Interactive) handleEvent(ev core.AgentEvent) {
2129	i.mu.Lock()
2130	defer i.mu.Unlock()
2131	switch e := ev.(type) {
2132	case core.EvTextDelta:
2133		i.streaming.WriteString(e.Delta)
2134	case core.EvAssistantMessage:
2135		i.streaming.Reset()
2136		i.streamOn = false
2137		if i.cfg.OnAssistant != nil {
2138			i.cfg.OnAssistant(e.Message)
2139		}
2140		// Mirror the assistant's final visible text to the telegram
2141		// bridge when active. Only TextBlock content is forwarded;
2142		// tool_use blocks are internal. Send on a goroutine so the
2143		// network call doesn't hold the event loop lock.
2144		if i.telegramBridge != nil && i.telegramBridge.Active() {
2145			var sb strings.Builder
2146			for _, c := range e.Message.Content {
2147				if tb, ok := c.(provider.TextBlock); ok {
2148					if sb.Len() > 0 {
2149						sb.WriteString("\n")
2150					}
2151					sb.WriteString(tb.Text)
2152				}
2153			}
2154			if text := sb.String(); strings.TrimSpace(text) != "" {
2155				go i.telegramBridge.OnAssistantText(text)
2156			}
2157		}
2158	case core.EvToolUseStart:
2159		// Live streaming: pre-create the view so the user sees the
2160		// tool call being composed in real time. Any subsequent
2161		// EvToolCall for the same ID updates the same struct (the
2162		// final parsed args + name are already known here).
2163		if _, exists := i.toolCalls[e.ID]; !exists {
2164			i.toolCalls[e.ID] = &tui.ToolCallView{
2165				ID:        e.ID,
2166				Name:      e.Name,
2167				Streaming: true,
2168			}
2169			i.toolOrder = append(i.toolOrder, e.ID)
2170		}
2171	case core.EvToolUseArgs:
2172		if tc, ok := i.toolCalls[e.ID]; ok {
2173			tc.RawJSONBuf += e.Delta
2174			// Refresh the live path as soon as it parses; used in
2175			// the header (▸ write /Users/pat/Desktop/demo.ts)
2176			// while the content is still streaming.
2177			if p, pok, _ := tui.ExtractPartialStringField(tc.RawJSONBuf, "path"); pok {
2178				tc.LivePath = p
2179			} else if p, pok, _ := tui.ExtractPartialStringField(tc.RawJSONBuf, "file_path"); pok {
2180				tc.LivePath = p
2181			}
2182		}
2183	case core.EvToolUseEnd:
2184		if tc, ok := i.toolCalls[e.ID]; ok {
2185			tc.Streaming = false
2186		}
2187	case core.EvToolCall:
2188		// If we already pre-created the view during streaming, just
2189		// refresh the final Args summary. Otherwise create a new one
2190		// (non-streaming providers or legacy paths).
2191		if tc, ok := i.toolCalls[e.ID]; ok {
2192			tc.Args = shortArgs(e.Args)
2193			tc.Streaming = false
2194		} else {
2195			i.toolCalls[e.ID] = &tui.ToolCallView{
2196				ID:   e.ID,
2197				Name: e.Name,
2198				Args: shortArgs(e.Args),
2199			}
2200			i.toolOrder = append(i.toolOrder, e.ID)
2201		}
2202	case core.EvToolResult:
2203		if tc, ok := i.toolCalls[e.ID]; ok {
2204			tc.Done = true
2205			tc.Error = e.Result.IsError
2206			var text strings.Builder
2207			for _, c := range e.Result.Content {
2208				if tb, ok := c.(provider.TextBlock); ok {
2209					if text.Len() > 0 {
2210						text.WriteString("\n")
2211					}
2212					text.WriteString(tb.Text)
2213				}
2214			}
2215			tc.Result = text.String()
2216		}
2217		if i.cfg.OnToolResult != nil {
2218			i.cfg.OnToolResult(e.ID, e.Result)
2219		}
2220	case core.EvUsage:
2221		i.cumUsage = e.Cumulative
2222		if e.Usage.InputTokens > 0 {
2223			i.lastCtxInput = e.Usage.InputTokens + e.Usage.CacheReadTokens + e.Usage.CacheWriteTokens
2224		}
2225	case core.EvTurnEnd:
2226		if e.Stop == provider.StopAborted {
2227			// Aborted turn: discard the partial streaming text (it is not
2228			// persisted in the transcript) and clear any transient error.
2229			i.streaming.Reset()
2230			i.streamOn = false
2231			i.statusErr = ""
2232			i.statusOK = "cancelled"
2233			return
2234		}
2235		if e.Err != nil && !strings.Contains(e.Err.Error(), "context canceled") {
2236			i.statusErr = e.Err.Error()
2237		}
2238	}
2239}
2240
2241// Agent returns the current agent, if any. Used by cli.go to flush the
2242// final transcript to the session file.
2243func (i *Interactive) Agent() *core.Agent {
2244	i.mu.Lock()
2245	defer i.mu.Unlock()
2246	return i.agent
2247}
2248
2249func shortArgs(raw json.RawMessage) string {
2250	var v any
2251	if err := json.Unmarshal(raw, &v); err != nil {
2252		return ""
2253	}
2254	if m, ok := v.(map[string]any); ok {
2255		for _, k := range []string{"path", "file_path", "command"} {
2256			if s, ok := m[k].(string); ok {
2257				if len(s) > 60 {
2258					s = s[:57] + "..."
2259				}
2260				return s
2261			}
2262		}
2263	}
2264	b, _ := json.Marshal(v)
2265	s := string(b)
2266	if len(s) > 60 {
2267		s = s[:57] + "..."
2268	}
2269	return s
2270}
2271
2272// silence unused import in some build configs
2273var _ = fmt.Sprintf
2274
2275// runReloadExt triggers a live reload of every extension (discovered
2276// + explicit). Runs on a goroutine so the TUI stays responsive; the
2277// Manager.Reload takes a couple of hundred ms to shut down subprocs
2278// and respawn them. Shows a status line throughout.
2279func (i *Interactive) runReloadExt(ctx context.Context) {
2280	if i.cfg.Extensions == nil {
2281		i.mu.Lock()
2282		i.statusErr = "no extension manager in this build"
2283		i.mu.Unlock()
2284		i.invalidate()
2285		return
2286	}
2287	i.mu.Lock()
2288	i.statusOK = "reloading extensions…"
2289	i.statusErr = ""
2290	i.mu.Unlock()
2291	i.invalidate()
2292
2293	go func() {
2294		stats := i.cfg.Extensions.Reload(ctx, 2*time.Second)
2295		msg := fmt.Sprintf("reloaded: %d stopped, %d loaded (%d ready)", stats.Stopped, stats.Loaded, stats.Ready)
2296		if len(stats.Errors) > 0 {
2297			msg += fmt.Sprintf(", %d error(s)", len(stats.Errors))
2298		}
2299		i.mu.Lock()
2300		i.statusOK = msg
2301		i.statusErr = ""
2302		i.mu.Unlock()
2303		i.invalidate()
2304	}()
2305}
2306
2307// Confirm implements core.Confirmer. The agent goroutine calls
2308// this synchronously before every tool invocation when --no-yolo is
2309// active. We push the request onto the confirmDialog queue, trigger
2310// a redraw, and block the caller until the user answers.
2311//
2312// If the session is cancelled or the TUI exits mid-prompt, any
2313// pending request is refused via CancelAll so the agent doesn't
2314// deadlock.
2315func (i *Interactive) Confirm(toolName string, preview string) core.ConfirmDecision {
2316	resp := make(chan core.ConfirmDecision, 1)
2317	i.confirmDialog.Enqueue(&confirmRequest{
2318		toolName: toolName,
2319		preview:  preview,
2320		resp:     resp,
2321	})
2322	i.invalidate()
2323	return <-resp
2324}
2325
2326// runYoloOn disables --no-yolo for the rest of the session. Tool
2327// calls run without prompting after this; there's intentionally no
2328// way to re-enable gating mid-session, if the user wants that back
2329// they can exit and restart with --no-yolo.
2330func (i *Interactive) runYoloOn() {
2331	if i.cfg.ConfirmGate == nil {
2332		i.mu.Lock()
2333		i.statusOK = "yolo mode is already on (no --no-yolo in this session)"
2334		i.statusErr = ""
2335		i.mu.Unlock()
2336		i.invalidate()
2337		return
2338	}
2339	i.cfg.ConfirmGate.AllowAll()
2340	// Also auto-allow any currently pending confirmation so the
2341	// agent doesn't deadlock if /yolo is typed while a prompt is
2342	// open.
2343	i.confirmDialog.AllowAllPending()
2344	i.mu.Lock()
2345	i.statusOK = "yolo engaged: no more tool-call confirmations this session"
2346	i.statusErr = ""
2347	i.mu.Unlock()
2348	i.invalidate()
2349}
2350
2351// openTelegramDialog shows the picker for `/telegram` with no arg.
2352// Items depend on current state: disconnect + status when running,
2353// connect + status when stopped.
2354func (i *Interactive) openTelegramDialog() {
2355	items := i.telegramMenuItems()
2356	if len(items) == 0 {
2357		i.mu.Lock()
2358		i.statusErr = "telegram not configured. run `zot telegram-bot setup` first."
2359		i.mu.Unlock()
2360		i.invalidate()
2361		return
2362	}
2363	i.telegramDialog.Open(items)
2364	i.invalidate()
2365}
2366
2367// telegramMenuItems builds the dialog entries for the current
2368// bridge state. Returns empty when no bot.json exists so the
2369// caller can show a helpful status line instead of an empty menu.
2370func (i *Interactive) telegramMenuItems() []telegramItem {
2371	cfg, err := telegram.LoadConfig(i.cfg.ZotHome)
2372	if err != nil || cfg.BotToken == "" {
2373		return nil
2374	}
2375	var items []telegramItem
2376	if i.telegramBridge != nil && i.telegramBridge.Active() {
2377		items = append(items, telegramItem{label: "disconnect", action: "disconnect", hint: "stop mirroring"})
2378		st := i.telegramBridge.State()
2379		hint := "active"
2380		if st.Username != "" {
2381			hint += " as @" + st.Username
2382		}
2383		items = append(items, telegramItem{label: "status", action: "status", hint: hint})
2384	} else {
2385		label := "connect"
2386		hint := "start mirroring dms into this session"
2387		if cfg.AllowedUserID == 0 {
2388			hint = "awaiting pairing (send /start to the bot once connected)"
2389		}
2390		items = append(items, telegramItem{label: label, action: "connect", hint: hint})
2391		items = append(items, telegramItem{label: "status", action: "status", hint: "disconnected"})
2392	}
2393	return items
2394}
2395
2396// doTelegram dispatches one of the three explicit actions. Called
2397// from /telegram <action> or after the picker selects a row.
2398func (i *Interactive) doTelegram(action string) {
2399	switch action {
2400	case "connect":
2401		i.telegramConnect()
2402	case "disconnect":
2403		i.telegramDisconnect()
2404	case "status":
2405		i.telegramStatus()
2406	default:
2407		i.mu.Lock()
2408		i.statusErr = "unknown telegram action: " + action + " (use connect, disconnect, or status)"
2409		i.mu.Unlock()
2410		i.invalidate()
2411	}
2412}
2413
2414// telegramConnect starts the bridge. Refuses if it's already
2415// running or if the on-disk bot.json is missing a token.
2416func (i *Interactive) telegramConnect() {
2417	if i.telegramBridge != nil && i.telegramBridge.Active() {
2418		i.mu.Lock()
2419		i.statusOK = "telegram already connected"
2420		i.statusErr = ""
2421		i.mu.Unlock()
2422		i.invalidate()
2423		return
2424	}
2425	cfg, err := telegram.LoadConfig(i.cfg.ZotHome)
2426	if err != nil {
2427		i.mu.Lock()
2428		i.statusErr = "telegram: " + err.Error()
2429		i.mu.Unlock()
2430		i.invalidate()
2431		return
2432	}
2433	if cfg.BotToken == "" {
2434		i.mu.Lock()
2435		i.statusErr = "telegram: no bot token configured. run `zot telegram-bot setup` first."
2436		i.mu.Unlock()
2437		i.invalidate()
2438		return
2439	}
2440	// Refuse to start when a background daemon is already polling
2441	// the same bot. Two concurrent long-poll consumers race each
2442	// update and one always loses, so DMs get half-delivered. The
2443	// user can `zot telegram-bot stop` first, then /telegram connect.
2444	if pid, alive, _ := telegram.IsRunning(i.cfg.ZotHome); alive && pid > 0 {
2445		i.mu.Lock()
2446		i.statusErr = fmt.Sprintf("telegram: bot daemon already running (pid %d). stop it with `zot telegram-bot stop` first.", pid)
2447		i.mu.Unlock()
2448		i.invalidate()
2449		return
2450	}
2451	i.telegramBridge = &telegram.Bridge{
2452		Client: telegram.NewClient(cfg.BotToken),
2453		Config: cfg,
2454		Save: func(next telegram.Config) error {
2455			return telegram.SaveConfig(i.cfg.ZotHome, next)
2456		},
2457		Host: &telegramHost{iv: i},
2458	}
2459	if err := i.telegramBridge.Start(i.runCtx); err != nil {
2460		i.telegramBridge = nil
2461		i.mu.Lock()
2462		i.statusErr = "telegram connect failed: " + err.Error()
2463		i.mu.Unlock()
2464		i.invalidate()
2465		return
2466	}
2467	state := i.telegramBridge.State()
2468	label := "telegram connected"
2469	if state.Username != "" {
2470		label += " as @" + state.Username
2471	}
2472	if state.PairedID == 0 {
2473		label += " — send /start to the bot from your phone to claim it"
2474	}
2475	i.mu.Lock()
2476	i.statusOK = label
2477	i.statusErr = ""
2478	i.mu.Unlock()
2479	i.invalidate()
2480}
2481
2482// telegramDisconnect stops the bridge. No-op when already stopped.
2483func (i *Interactive) telegramDisconnect() {
2484	if i.telegramBridge == nil || !i.telegramBridge.Active() {
2485		i.mu.Lock()
2486		i.statusOK = "telegram already disconnected"
2487		i.statusErr = ""
2488		i.mu.Unlock()
2489		i.invalidate()
2490		return
2491	}
2492	i.telegramBridge.Stop()
2493	i.mu.Lock()
2494	i.statusOK = "telegram disconnected"
2495	i.statusErr = ""
2496	i.mu.Unlock()
2497	i.invalidate()
2498}
2499
2500// telegramStatus writes a one-liner describing the bridge state.
2501// Reports on both the in-tui bridge and the background daemon so
2502// the user isn't confused when the daemon owns the poll loop.
2503func (i *Interactive) telegramStatus() {
2504	var msg string
2505	if i.telegramBridge != nil && i.telegramBridge.Active() {
2506		s := i.telegramBridge.State()
2507		msg = "telegram: connected (tui bridge)"
2508		if s.Username != "" {
2509			msg += " as @" + s.Username
2510		}
2511		if s.PairedID != 0 {
2512			msg += fmt.Sprintf(" · paired with user %d", s.PairedID)
2513		} else {
2514			msg += " · awaiting pairing"
2515		}
2516	} else if pid, alive, _ := telegram.IsRunning(i.cfg.ZotHome); alive && pid > 0 {
2517		msg = fmt.Sprintf("telegram: background daemon running (pid %d) · /telegram connect won't work until you stop it", pid)
2518	} else {
2519		cfg, _ := telegram.LoadConfig(i.cfg.ZotHome)
2520		if cfg.BotToken == "" {
2521			msg = "telegram: not configured. run `zot telegram-bot setup` first."
2522		} else {
2523			msg = "telegram: disconnected"
2524			if cfg.BotUsername != "" {
2525				msg += " (@" + cfg.BotUsername + " ready to connect)"
2526			}
2527		}
2528	}
2529	i.mu.Lock()
2530	i.statusOK = msg
2531	i.statusErr = ""
2532	i.mu.Unlock()
2533	i.invalidate()
2534}
2535
2536// telegramHost adapts *Interactive to telegram.Host so the bridge
2537// can call back into the TUI without importing modes directly.
2538type telegramHost struct{ iv *Interactive }
2539
2540func (h *telegramHost) SubmitOrQueue(prompt string, images []provider.ImageBlock) {
2541	h.iv.SubmitOrQueue(prompt, images)
2542}
2543
2544func (h *telegramHost) CancelTurn() { h.iv.CancelTurn() }
2545
2546func (h *telegramHost) Notify(level, message string) {
2547	h.iv.mu.Lock()
2548	switch level {
2549	case "error", "warn":
2550		h.iv.statusErr = message
2551		h.iv.statusOK = ""
2552	default:
2553		h.iv.statusOK = message
2554		h.iv.statusErr = ""
2555	}
2556	h.iv.mu.Unlock()
2557	h.iv.invalidate()
2558}
2559
2560// openSessionOpsDialog shows the picker for `/session` with no arg.
2561// Always offers export, import, fork, tree; the handlers bail with
2562// a clear status message when the precondition isn't met (empty
2563// transcript on fork; no parent/siblings on tree).
2564func (i *Interactive) openSessionOpsDialog() {
2565	items := []sessionOpsItem{
2566		{label: "export", action: "export", hint: "write the current session to a .zotsession file"},
2567		{label: "import", action: "import", hint: "load a .zotsession file into this directory"},
2568		{label: "fork", action: "fork", hint: "branch from a past user message into a new session"},
2569		{label: "tree", action: "tree", hint: "switch between branches in this directory"},
2570	}
2571	i.sessionOpsDialog.Open(items)
2572	i.invalidate()
2573}
2574
2575// doSessionOp dispatches export, import, fork, or tree. arg is the
2576// optional positional argument from e.g. /session export <path>
2577// or /session import <path>; fork and tree ignore it.
2578func (i *Interactive) doSessionOp(action, arg string) {
2579	switch action {
2580	case "export":
2581		i.doSessionExport(arg)
2582	case "import":
2583		i.doSessionImport(arg)
2584	case "fork":
2585		i.doSessionFork()
2586	case "tree":
2587		i.doSessionTree()
2588	default:
2589		i.mu.Lock()
2590		i.statusErr = "unknown /session action: " + action + " (use export, import, fork, or tree)"
2591		i.mu.Unlock()
2592		i.invalidate()
2593	}
2594}
2595
2596// doSessionExport writes the live session file to destination path
2597// dst. When dst is empty we default to ~/Downloads (falling back to
2598// the user's home directory if it doesn't exist). The helper
2599// expands a leading `~` and creates any missing parent directories.
2600func (i *Interactive) doSessionExport(dst string) {
2601	if i.cfg.CurrentSessionPath == nil {
2602		i.mu.Lock()
2603		i.statusErr = "export: no session is active (running with --no-session?)"
2604		i.mu.Unlock()
2605		i.invalidate()
2606		return
2607	}
2608	src := i.cfg.CurrentSessionPath()
2609	if src == "" {
2610		i.mu.Lock()
2611		i.statusErr = "export: no session is active (running with --no-session?)"
2612		i.mu.Unlock()
2613		i.invalidate()
2614		return
2615	}
2616	// Persist any in-memory agent messages to the session file so
2617	// the export carries the full conversation. Without this, the
2618	// default lazy-flush-at-exit strategy leaves most of a running
2619	// session unwritten and the export ends up with only the meta.
2620	if i.cfg.FlushSession != nil {
2621		i.cfg.FlushSession()
2622	}
2623	dst = unquotePath(dst)
2624	if dst == "" {
2625		dst = defaultExportDir()
2626	} else {
2627		dst = expandTilde(dst)
2628	}
2629	out, err := core.ExportSession(src, dst)
2630	if err != nil {
2631		i.mu.Lock()
2632		i.statusErr = "export: " + err.Error()
2633		i.mu.Unlock()
2634		i.invalidate()
2635		return
2636	}
2637	i.mu.Lock()
2638	i.statusOK = "exported session to " + friendlyPath(out)
2639	i.statusErr = ""
2640	i.mu.Unlock()
2641	i.invalidate()
2642}
2643
2644// doSessionImport copies the .zotsession file at src into the
2645// running cwd's sessions directory and loads it as the active
2646// session, same as `/sessions` -> pick. When src is empty we ask
2647// the user to pass a path (no usable default here).
2648func (i *Interactive) doSessionImport(src string) {
2649	src = unquotePath(src)
2650	if src == "" {
2651		i.mu.Lock()
2652		i.statusErr = "import: pass a path — e.g. /session import ~/Downloads/work.zotsession"
2653		i.mu.Unlock()
2654		i.invalidate()
2655		return
2656	}
2657	src = expandTilde(src)
2658	if _, err := os.Stat(src); err != nil {
2659		i.mu.Lock()
2660		i.statusErr = "import: " + err.Error()
2661		i.mu.Unlock()
2662		i.invalidate()
2663		return
2664	}
2665	newPath, err := core.ImportSession(src, i.cfg.ZotHome, i.cfg.CWD, i.cfg.Version)
2666	if err != nil {
2667		i.mu.Lock()
2668		i.statusErr = "import: " + err.Error()
2669		i.mu.Unlock()
2670		i.invalidate()
2671		return
2672	}
2673	if i.cfg.LoadSession == nil {
2674		i.mu.Lock()
2675		i.statusOK = "imported session at " + friendlyPath(newPath) + " (run /sessions to resume it)"
2676		i.statusErr = ""
2677		i.mu.Unlock()
2678		i.invalidate()
2679		return
2680	}
2681	if err := i.cfg.LoadSession(newPath); err != nil {
2682		i.mu.Lock()
2683		i.statusErr = "import: load failed: " + err.Error()
2684		i.mu.Unlock()
2685		i.invalidate()
2686		return
2687	}
2688	i.mu.Lock()
2689	i.statusOK = "imported and switched to session " + friendlyPath(newPath)
2690	i.statusErr = ""
2691	i.mu.Unlock()
2692	i.invalidate()
2693}
2694
2695// defaultExportDir returns ~/Downloads when it exists, or ~ as a
2696// fallback, or /tmp on exotic machines with no home dir.
2697func defaultExportDir() string {
2698	home, err := os.UserHomeDir()
2699	if err != nil || home == "" {
2700		return os.TempDir()
2701	}
2702	downloads := filepath.Join(home, "Downloads")
2703	if fi, err := os.Stat(downloads); err == nil && fi.IsDir() {
2704		return downloads
2705	}
2706	return home
2707}
2708
2709// expandTilde turns a leading ~ into the user's home directory.
2710// Returns the input unchanged when there's no tilde or no home.
2711func expandTilde(p string) string {
2712	if p == "" || p[0] != '~' {
2713		return p
2714	}
2715	home, err := os.UserHomeDir()
2716	if err != nil || home == "" {
2717		return p
2718	}
2719	if len(p) == 1 {
2720		return home
2721	}
2722	if p[1] == '/' || p[1] == filepath.Separator {
2723		return filepath.Join(home, p[2:])
2724	}
2725	return p
2726}
2727
2728// unquotePath strips a matching pair of surrounding single or
2729// double quotes. Drag-drop paste in the tui auto-quotes dropped
2730// file paths so the shell-like `/session import 'foo bar.zs'`
2731// stays well-formed; when the TUI's own slash handler consumes
2732// the arg, we want the raw path back.
2733func unquotePath(p string) string {
2734	p = strings.TrimSpace(p)
2735	if len(p) >= 2 {
2736		first := p[0]
2737		last := p[len(p)-1]
2738		if (first == '\'' && last == '\'') || (first == '"' && last == '"') {
2739			p = p[1 : len(p)-1]
2740		}
2741	}
2742	return p
2743}
2744
2745// friendlyPath collapses the user's home directory to a leading ~
2746// so status messages read cleanly. Falls back to the raw path when
2747// the home dir is unknown.
2748func friendlyPath(p string) string {
2749	home, err := os.UserHomeDir()
2750	if err != nil || home == "" {
2751		return p
2752	}
2753	if strings.HasPrefix(p, home+string(filepath.Separator)) {
2754		return "~" + p[len(home):]
2755	}
2756	return p
2757}
2758
2759// doSessionFork opens the /jump turn picker in "fork mode". The
2760// next selection branches the current session at that user turn
2761// instead of scrolling the viewport to it.
2762func (i *Interactive) doSessionFork() {
2763	if i.cfg.CurrentSessionPath == nil || i.cfg.CurrentSessionPath() == "" {
2764		i.mu.Lock()
2765		i.statusErr = "fork: no session is active (running with --no-session?)"
2766		i.mu.Unlock()
2767		i.invalidate()
2768		return
2769	}
2770	msgs := []provider.Message{}
2771	if i.agent != nil {
2772		msgs = i.agent.Messages()
2773	}
2774	if len(msgs) == 0 {
2775		i.mu.Lock()
2776		i.statusErr = "fork: transcript is empty; nothing to fork from"
2777		i.mu.Unlock()
2778		i.invalidate()
2779		return
2780	}
2781	i.pendingFork = true
2782	i.jumpDialog.Open(msgs, "")
2783	i.invalidate()
2784}
2785
2786// doSessionTree shows the branch topology picker for this cwd.
2787// Pick an entry to switch into it (same semantics as /sessions
2788// picking a past session, but with the parent/child indentation).
2789func (i *Interactive) doSessionTree() {
2790	if i.cfg.ZotHome == "" || i.cfg.CWD == "" {
2791		i.mu.Lock()
2792		i.statusErr = "tree: session storage not configured"
2793		i.mu.Unlock()
2794		i.invalidate()
2795		return
2796	}
2797	// Flush the running agent's transcript first so its message
2798	// count + latest preview are accurate in the tree.
2799	if i.cfg.FlushSession != nil {
2800		i.cfg.FlushSession()
2801	}
2802	roots := core.BuildSessionTree(i.cfg.ZotHome, i.cfg.CWD)
2803	if len(roots) == 0 {
2804		i.mu.Lock()
2805		i.statusErr = "tree: no sessions in this directory yet"
2806		i.mu.Unlock()
2807		i.invalidate()
2808		return
2809	}
2810	current := ""
2811	if i.cfg.CurrentSessionPath != nil {
2812		current = i.cfg.CurrentSessionPath()
2813	}
2814	if !i.sessionTreeDialog.Open(roots, current) {
2815		i.mu.Lock()
2816		i.statusErr = "tree: no branches to show"
2817		i.mu.Unlock()
2818	}
2819	i.invalidate()
2820}
2821
2822// applySessionTreeSelection switches the running agent to the
2823// session file at path. Thin wrapper around LoadSession that also
2824// writes a status line.
2825func (i *Interactive) applySessionTreeSelection(path string) {
2826	if i.cfg.LoadSession == nil {
2827		i.mu.Lock()
2828		i.statusErr = "tree: session swap not available in this build"
2829		i.mu.Unlock()
2830		i.invalidate()
2831		return
2832	}
2833	if err := i.cfg.LoadSession(path); err != nil {
2834		i.mu.Lock()
2835		i.statusErr = "tree: load failed: " + err.Error()
2836		i.mu.Unlock()
2837		i.invalidate()
2838		return
2839	}
2840	i.mu.Lock()
2841	i.statusOK = "switched to branch " + friendlyPath(path)
2842	i.statusErr = ""
2843	i.mu.Unlock()
2844	i.invalidate()
2845}
2846
2847// applyForkSelection branches the current session at msgIdx+1 (so
2848// the selected user message and everything before it is included
2849// in the new branch), then switches the running agent to the new
2850// file. Called from the jump-dialog handler when pendingFork=true.
2851func (i *Interactive) applyForkSelection(msgIdx int) {
2852	i.pendingFork = false
2853	if i.cfg.CurrentSessionPath == nil {
2854		i.mu.Lock()
2855		i.statusErr = "fork: no session is active"
2856		i.mu.Unlock()
2857		i.invalidate()
2858		return
2859	}
2860	src := i.cfg.CurrentSessionPath()
2861	if src == "" {
2862		i.mu.Lock()
2863		i.statusErr = "fork: no session is active"
2864		i.mu.Unlock()
2865		i.invalidate()
2866		return
2867	}
2868	if i.cfg.FlushSession != nil {
2869		i.cfg.FlushSession()
2870	}
2871	// msgIdx is 0-indexed message position; copy msgIdx+1 rows so
2872	// the selected user message is included.
2873	upTo := msgIdx + 1
2874	newPath, err := core.BranchSession(src, i.cfg.ZotHome, i.cfg.CWD, i.cfg.Version, upTo)
2875	if err != nil {
2876		i.mu.Lock()
2877		i.statusErr = "fork: " + err.Error()
2878		i.mu.Unlock()
2879		i.invalidate()
2880		return
2881	}
2882	if i.cfg.LoadSession == nil {
2883		i.mu.Lock()
2884		i.statusOK = "forked at message " + formatInt(upTo) + " (run /sessions to resume)"
2885		i.statusErr = ""
2886		i.mu.Unlock()
2887		i.invalidate()
2888		return
2889	}
2890	if err := i.cfg.LoadSession(newPath); err != nil {
2891		i.mu.Lock()
2892		i.statusErr = "fork: switch failed: " + err.Error()
2893		i.mu.Unlock()
2894		i.invalidate()
2895		return
2896	}
2897	i.mu.Lock()
2898	i.statusOK = "forked and switched to new branch at " + friendlyPath(newPath)
2899	i.statusErr = ""
2900	i.mu.Unlock()
2901	i.invalidate()
2902}
2903
2904// formatInt is a tiny strconv.Itoa shim; keeps the handler above
2905// from needing a strconv import just for one call.
2906func formatInt(n int) string {
2907	return fmt.Sprintf("%d", n)
2908}