//! Application actions, effects, and task results.
//!
//! This module defines the three enums that form the backbone of the
//! event→dispatch→effect pipeline:
//!
//! - [`Action`] — produced by input handling, consumed by dispatch (sync).
//! - [`Effect`] — produced by dispatch, consumed by the event loop (async).
//! - [`TaskResult`] — produced by spawned tasks, fed back into dispatch.
use super::agent::AgentId;
use crate::scrollback::entry::EntryId;
use agent_client_protocol as acp;
use kigi_shell::sampling::types::ReasoningEffort;
/// Typed error for model switch failures. Replaces the raw `String` in
/// `TaskResult::SwitchModelComplete` so dispatch can match on the variant
/// instead of parsing strings.
#[derive(Debug, Clone)]
pub enum SwitchModelError {
    /// The target model requires a different agent harness than the
    /// active session. The pager should offer to start a new session.
    /// Deserialized from `ModelSwitchIncompatibleAgentError` in
    /// `acp::Error.data`.
    IncompatibleAgent {
        error: kigi_shell::agent::config::ModelSwitchIncompatibleAgentError,
        /// The model that was active before the optimistic UI update
        /// (if any). Used to roll back `models.current` when the user
        /// declines to start a new session.
        prev_model_id: Option<acp::ModelId>,
    },
    /// Any other failure (network, auth, server error, etc.).
    Other(String),
}
/// Synchronous, side-effect-free user intent.
///
/// Produced by [`super::input`] from key/mouse events.
/// Consumed by [`super::dispatch::dispatch`] to mutate state and return effects.
#[derive(Debug)]
#[allow(clippy::large_enum_variant)]
pub enum Action {
    /// Quit the application.
    Quit,
    /// Restart the binary to pick up a downloaded update.
    QuitForUpdate,
    /// Resume the recent foreign session offered on the launch welcome screen.
    ResumeForeignSession,
    /// Re-exec into the other screen mode (`true` = minimal).
    RelaunchInScreenMode {
        minimal: bool,
    },
    /// Quit without double-press confirmation (e.g., from command palette or pre-login screens).
    QuitConfirmed,
    /// Create a new session from the welcome screen.
    NewSession,
    /// Ask whether the new session should use a git worktree.
    ChooseNewSessionMode,
    /// Exit the current session and return to the welcome screen.
    ExitSession,
    /// Exit session without double-press confirmation (e.g., from command palette).
    ExitSessionConfirmed,
    /// Open an arbitrary URL in the system browser (with scheme validation).
    OpenUrl(String),
    /// Cycle to the next visible link (or highlight the first if none selected).
    OpenNextLink,
    /// Cycle to the previous visible link.
    OpenPrevLink,
    /// Fetch the session list for the session picker on the welcome screen.
    FetchSessionList,
    /// Cycle the active session picker's source filter.
    CycleSessionSourceFilter,
    /// Load a selected session from the session picker.
    PickSession(usize),
    /// Load a selected session from the session picker into a new worktree.
    PickSessionInWorktree(usize),
    /// Copy the selected session's ID to the clipboard.
    CopySessionId(usize),
    /// Toggle expanded card view for a session in the picker.
    ExpandSessionCard {
        source: String,
        session_id: String,
    },
    /// Open the session picker overlay (from within an active session via /resume).
    ShowSessionPicker,
    /// The session picker overlay was dismissed without a pick: invalidate any
    /// in-flight list/search/foreign scan so a late response can't fall
    /// through to the welcome picker fields.
    SessionPickerClosed,
    /// Create a new session in a git worktree from the welcome screen.
    /// `load_session_id`: when `Some`, loads that session in the new worktree
    /// instead of creating a fresh one (`--resume` + `--worktree`).
    /// `label`: optional human-readable label from CLI `-w <label>` or dialog.
    NewWorktreeSession {
        load_session_id: Option<String>,
        label: Option<String>,
        /// Optional branch/tag/commit to base the worktree on (CLI `--ref` / `--worktree-ref`).
        git_ref: Option<String>,
    },
    /// Open the "New Worktree" popup dialog on the welcome screen.
    OpenNewWorktreeDialog,
    /// Open the interactive import-claude modal on the welcome screen.
    ImportClaudeSettings,
    /// User confirmed the import modal — apply selected items.
    ImportClaudeConfirm,
    /// User cancelled the import modal — close without applying.
    ImportClaudeCancel,
    /// Hide the import-claude menu row by recording the current `.claude/`
    /// content hash as "seen". Doesn't import anything, doesn't change
    /// runtime fallback behavior. The menu reappears only if `.claude/`
    /// content changes.
    DismissClaudeImport,
    /// Load (resume) an existing session by ID (strict — never create).
    /// The optional `PathBuf` overrides the CWD for sessions stored under a
    /// different directory (e.g., a worktree).
    ///
    /// `chat_kind` is the **conversation-entry** bit only (`source ==
    /// "conversation"` / restore preserve) — **not** sticky `--chat`.
    /// Process-wide chat mode still stamps kind=chat via SessionFlags in the
    /// load effect; under `--chat`, local Build disk rows are refused in
    /// dispatch (never coerced).
    LoadSession(String, Option<std::path::PathBuf>, bool),
    /// Create a new session with a client-chosen session ID (`--session-id`).
    NewSessionWithId(String),
    /// Startup `--fork-session`: fork `parent` then load the child.
    /// Optional second string is the desired new session ID.
    StartupForkSession {
        parent_session_id: String,
        parent_cwd: Option<std::path::PathBuf>,
        new_session_id: Option<String>,
    },
    /// Send the current prompt text to the agent.
    SendPrompt(String),
    /// Submit a clicked follow-up suggestion chip as a LITERAL model prompt.
    /// The suggestion text is server/model-controlled, so it must bypass
    /// slash-command and exit-alias resolution (a `/always-approve` or `/quit`
    /// chip must never execute as a command).
    SubmitFollowUp(String),
    /// Execute a slash command without consuming the prompt textarea.
    ///
    /// Used by modal-driven slash dispatchers (command palette, ArgPicker)
    /// where the user's draft text in the prompt should be preserved
    /// rather than wiped as a side effect of the command. Behaves
    /// identically to `SendPrompt` otherwise — same registry resolution,
    /// same effect outputs — but skips the `prompt.set_text("")` calls.
    SendSlashCommandPreservingDraft(String),
    /// Send a mid-turn interjection without canceling the running turn.
    /// Reserved for text that answers the running turn (plan-review comments,
    /// permission follow-ups); user send-now takes [`Self::SendPromptNow`].
    Interject {
        text: String,
        /// Pasted images riding along with the interjection. Empty for
        /// producers that carry plain text (plan-review comments, etc.).
        images: Vec<crate::prompt_images::PastedImage>,
    },
    /// Cancel-and-send: cancel the running turn (background tasks and queued
    /// rows survive shell-side) and run this text as the next prompt turn.
    /// The send-now chord, empty-composer Enter on a queued local row, and
    /// the deferred-paste re-issue produce this.
    SendPromptNow {
        text: String,
        /// Pasted images riding along with the prompt.
        images: Vec<crate::prompt_images::PastedImage>,
    },
    /// Send a direct bash command (bypasses agent loop).
    SendBashCommand(String),
    /// The user wiped a substantial prompt draft: show the seen-gated
    /// "ctrl+z to undo" ephemeral tip on the active agent. Gated by the per-tip
    /// `contextual_hints.undo` gate.
    ShowUndoTip,
    /// The user typed a planning keyword into the prompt: show the seen-gated
    /// "Planning? Check out plan mode via shift+tab" ephemeral tip on the active
    /// agent. Gated by the per-tip `contextual_hints.plan_mode` gate.
    ShowPlanNudge,
    /// The user double-clicked scrollback while Text selection is fold/nav:
    /// show the seen-gated "/settings → Text selection → Word select" tip.
    /// Gated by the per-tip `contextual_hints.word_select` gate.
    ShowWordSelectTip,
    /// Accept the word-select tip (its advertised chord, pressed while the
    /// tip is on screen): flip `keep_text_selection` to `word_select`,
    /// persist it, and retire the tip.
    AcceptWordSelectTip,
    /// Try to drain the next queued prompt (after editing completes, etc.).
    DrainQueue,
    /// Remove a server-authoritative (shared) queued prompt by its stable
    /// `prompt_id`. Routed to the agent as `kigi/queue/remove`;
    /// the resulting `kigi/queue/changed` rebroadcast is the source of truth.
    QueueRemoveShared {
        id: String,
        expected_version: u64,
    },
    /// Reorder the server-authoritative (shared) queued prompts to match
    /// `ordered_ids`. Routed as `kigi/queue/reorder`.
    QueueReorderShared {
        ordered_ids: Vec<String>,
    },
    /// Clear the caller's server-authoritative (shared) queued prompts.
    /// Routed as `kigi/queue/clear`.
    QueueClearShared,
    /// Replace the text of a server-authoritative (shared) queued prompt.
    /// Routed to the agent as `kigi/queue/edit`; the rebroadcast of
    /// `kigi/queue/changed` is the source of truth. Last write wins via the
    /// session actor's serialized mailbox; no client-side conflict resolution.
    QueueEditShared {
        id: String,
        new_text: String,
    },
    /// Interject a server-authoritative (shared) queued prompt into the running
    /// turn: the agent atomically removes it from the queue and
    /// merges its text into the in-flight turn. Routed as `kigi/queue/interject`;
    /// the `kigi/session/interjection` + `kigi/queue/changed` rebroadcasts are
    /// the source of truth (no optimistic client-side block). Mirrors the local
    /// "Send now" / `Ctrl+Enter` path, which uses [`Interject`](Self::Interject)
    /// directly because the local queue is client-owned.
    QueueInterjectShared {
        id: String,
        expected_version: u64,
        /// Locally-edited replacement text (the edit-interject key while in
        /// `PromptMode::EditingQueued`): without it the agent would interject
        /// the original server-side text, not the edit. Atomicity semantics
        /// live on [`Effect::QueueInterject`].
        new_text: Option<String>,
    },
    /// Focus the prompt pane.
    FocusPrompt,
    /// Focus the scrollback pane (leave prompt).
    FocusScrollback,
    /// Clear the prompt (history-aware). Armed by idle Esc double-press via
    /// [`super::app_view::InputOutcome::ArmPending`] (no ActionDef; not a keybinding).
    ClearPrompt,
    /// Focus the scrollback pane and open an incremental search over it.
    /// Drives the `/find` slash command so simple-mode users (where a bare
    /// `/` goes to the prompt) reach the same search as the vim `/` key.
    /// Carries the optional `/find <word>` argument to pre-fill the bar.
    OpenScrollbackSearch(Option<String>),
    /// Select next entry in scrollback.
    SelectNext,
    /// Select previous entry.
    SelectPrev,
    /// Jump to next turn boundary.
    NextTurn,
    /// Jump to previous turn boundary.
    PrevTurn,
    /// Jump to next assistant response.
    NextResponse,
    /// Jump to previous assistant response.
    PrevResponse,
    /// Scroll up by N lines.
    ScrollUp(u16),
    /// Scroll down by N lines.
    ScrollDown(u16),
    /// Go to top of scrollback.
    GotoTop,
    /// Go to bottom of scrollback.
    GotoBottom,
    /// Half page up.
    HalfPageUp,
    /// Half page down.
    HalfPageDown,
    /// Full page up.
    PageUp,
    /// Full page down.
    PageDown,
    /// Collapse selected entry (no-op if already collapsed or not foldable).
    Collapse,
    /// Expand selected entry (no-op if already expanded or not foldable).
    Expand,
    /// Toggle fold on selected entry.
    ToggleFold,
    /// Smart expand/collapse all: expand all if any collapsed, else collapse all.
    ToggleExpandAll,
    /// Expand all thinking blocks (toggle: expand if any collapsed, else collapse all).
    ExpandAllThinking,
    /// Toggle raw markdown on selected entry.
    ToggleRaw,
    /// Toggle terminal mouse reporting (mouse capture). Disabling it lets
    /// the terminal handle native click-drag text selection / copy-paste;
    /// re-enabling restores in-app mouse handling. Bound to Ctrl+R while the
    /// scrollback pane is focused.
    ToggleMouseCapture,
    /// Toggle the scroll-diagnostics HUD (hidden `/scroll-debug` command,
    /// also `/debug scroll`; `KIGI_SCROLL_DEBUG=1` enables it from startup).
    ToggleScrollDebugHud,
    /// Toggle the release-safe FPS HUD (`/debug fps`).
    ToggleFpsHud,
    /// Toggle the scroll flight recorder at runtime (`/debug log`;
    /// `KIGI_SCROLL_LOG=1` enables it from startup).
    ToggleScrollLog,
    /// Print the `/debug` toggles and their on/off state to the transcript.
    ShowDebugStatus,
    /// Copy selected block's content to clipboard.
    CopyBlockContent,
    /// Copy the Nth most recent assistant message to clipboard (1 = latest).
    CopyAssistantMessage {
        n: usize,
    },
    /// Export the active (sub)agent's conversation transcript as Markdown.
    /// `None` => copy to clipboard (with route-aware toast + stats); `Some(p)` => write UTF-8 file
    /// (all ~ expansion, parent dir creation, and fs::write live in the dispatch handler).
    ExportConversation {
        file_path: Option<std::path::PathBuf>,
    },
    /// Render the active (sub)agent's full transcript to a temp Markdown file and
    /// open it in `$PAGER` (default `less`), suspending the inline TUI for the
    /// duration. The dispatch handler renders + writes the file and arms
    /// `AppView::pending_pager_path`; the event loop does the suspend/restore.
    OpenTranscriptPager,
    /// Minimal mode (`kigi --minimal`): re-print the most-recently committed
    /// folded block (collapsed reasoning / truncated tool output) into native
    /// scrollback, fully expanded, below the conversation (design decision K10).
    /// Bound to `Ctrl+E` and the `/expand` command. No-op outside minimal mode
    /// or when nothing folded remains to expand.
    MinimalExpandLast,
    /// Copy selected block's metadata (e.g., command for execute blocks).
    CopyBlockMeta,
    /// Open the selected block in the fullscreen viewer.
    OpenBlockViewer,
    /// Open the extensions modal dialog on a specific tab.
    OpenExtensionsModal {
        tab: crate::views::extensions_modal::ExtensionsTab,
    },
    /// Open the agents modal (listing all agent definitions).
    /// Optionally opens directly on a specific tab.
    OpenConfigAgentsModal(Option<crate::views::agents_modal::AgentsTab>),
    /// Trigger OAuth for an MCP server from the modal.
    McpAuthTrigger {
        server_name: String,
    },
    /// Reload skills list from the modal.
    ReloadSkills,
    /// Refresh MCP server list from the modal.
    RefreshMcpList,
    /// Execute a hooks management action from the modal.
    ExecuteHooksAction(kigi_hooks_plugins_types::HooksAction),
    /// Execute a plugins management action from the modal.
    ExecutePluginsAction(kigi_hooks_plugins_types::PluginsAction),
    /// Add or update an MCP server via kigi/mcp/upsert.
    UpsertMcpServer {
        name: String,
        config: Box<kigi_shell::util::config::McpServerConfig>,
    },
    /// Delete an MCP server via kigi/mcp/delete.
    DeleteMcpServer {
        server_name: String,
    },
    /// Live-toggle an MCP server (enable/disable without session restart).
    ToggleMcpServer {
        server_name: String,
        enabled: bool,
    },
    /// Toggle a skill enable/disable via kigi/skills/toggle.
    ToggleSkill {
        skill_name: String,
        enabled: bool,
    },
    /// Toggle a single MCP tool within a server (enable/disable).
    ToggleMcpTool {
        server_name: String,
        tool_name: String,
        enabled: bool,
    },
    /// Cycle to next model.
    NextModel,
    /// Switch active model.
    SwitchModel {
        model_id: acp::ModelId,
        effort: Option<ReasoningEffort>,
    },
    /// Cancel the currently running turn.
    CancelTurn,
    /// User confirmed a cancel-turn choice from the panel.
    CancelTurnChoice(crate::views::modal::CancelTurnChoice),
    /// Kill a background task by task_id.
    KillBgTask(String),
    /// Kill (cancel) a subagent by subagent_id.
    KillSubagent(String),
    CancelScheduledTask(String),
    /// Demote the currently running execute tool to a background task.
    DemoteToBackground,
    /// Request current bundle cache status via `kigi/bundle/status`.
    RequestBundleStatus,
    /// View a catalog entry's raw content in the block viewer.
    ViewCatalogEntry {
        kind: String,
        name: String,
    },
    /// Cycle session mode (Shift+Tab): Normal → Plan → Always-Approve → Normal.
    /// Plan mode sends a signal to the shell; always-approve is local.
    CycleMode,
    /// Toggle YOLO mode (auto-approve all permissions). Ctrl+O.
    ToggleYolo,
    /// Set YOLO (auto-approve / `always-approve`) mode.
    SetYoloMode(bool),
    /// Set the permission mode by canonical kind (`always-approve` /
    /// `ask` / `default`). Typed wrapper over [`Action::SetYoloMode`]
    /// that preserves the `default` canonical (the `bool` variant
    /// collapses `default` to `ask`).
    SetPermissionMode(PermissionModeKind),
    /// Toggle multiline input mode (swap Enter and Shift+Enter behavior).
    ToggleMultiline,
    /// Set multiline input mode (swap Enter and Shift+Enter behavior).
    /// Pager-owned, NOT persisted to disk — reset each session.
    SetMultilineMode(bool),
    /// Open the prompt-history search panel on the active agent (composer
    /// as filter query). Dispatched by `/history`.
    OpenHistorySearch,
    /// Set how ` ```mermaid ` code blocks are rendered (auto/on/off).
    /// SHELL-owned: updates the process-wide cache mirror and persists to
    /// `[ui].render_mermaid` in config.toml via `Effect::PersistSetting`.
    SetRenderMermaid(crate::appearance::RenderMermaid),
    /// Toggle vim-style scrollback keybindings (j/k, h/l, g/G, y/Y, etc.).
    /// Delegates to `set_vim_mode` so the new value is persisted to
    /// `[ui].vim_mode` in config.toml — same path as the settings modal.
    ToggleVimMode,
    /// Set vim-style scrollback keybindings. SHELL-owned: persisted to
    /// `[ui].vim_mode` in config.toml via `Effect::PersistSetting`.
    /// Used by the settings modal; the `ToggleVimMode` variant covers
    /// the `/vim-mode` slash-command path.
    SetVimMode(bool),
    /// Toggle the per-tool "Always allow …" prompt options. SHELL-owned;
    /// persisted to `[ui].remember_tool_approvals`. Applies to new sessions.
    SetRememberToolApprovals(bool),
    /// Toggle the ask_user_question timeout. SHELL-owned; persisted to
    /// `[toolset.ask_user_question].timeout_enabled`. Applies to new sessions.
    SetAskUserQuestionTimeoutEnabled(bool),
    /// SHELL-owned `keep_text_selection` (`flash` | `hold`); cache + persist.
    SetKeepTextSelection(crate::appearance::TextSelection),
    /// Set the mouse-wheel scroll speed multiplier (1-100). Pager-owned
    /// ephemeral — process-wide cache, no `Effect::PersistSetting`.
    SetScrollSpeed(i64),
    /// Force scroll input classification (`auto` | `wheel` | `trackpad`).
    /// SHELL-owned: cache mirror + `[ui].scroll_mode` via `Effect::PersistSetting`.
    SetScrollMode(crate::appearance::ScrollMode),
    /// Invert vertical scroll direction. SHELL-owned: cache mirror +
    /// `[ui].invert_scroll` via `Effect::PersistSetting`.
    SetInvertScroll(bool),
    /// Set lines-per-tick for both wheel and trackpad (1-10). SHELL-owned:
    /// cache mirror + `[ui].scroll_lines` via `Effect::PersistSetting`.
    SetScrollLines(i64),
    /// Set whether agent thinking blocks are shown. SHELL-owned: updates the
    /// process-wide cache mirror and persists to `[ui].show_thinking_blocks`
    /// via `Effect::PersistSetting`.
    SetShowThinkingBlocks(bool),
    /// Set whether runs of consecutive non-destructive tool calls and
    /// subagent rows are grouped into one row. SHELL-owned: updates the
    /// process-wide cache mirror and persists to `[ui].group_tool_verbs`
    /// via `Effect::PersistSetting`.
    SetGroupToolVerbs(bool),
    /// Set whether Edit blocks default to the collapsed one-line diffstat
    /// summary. SHELL-owned: updates the process-wide cache mirror and
    /// persists to `[ui].collapsed_edit_blocks` via `Effect::PersistSetting`.
    SetCollapsedEditBlocks(bool),
    /// Set whether the predicted-next-prompt ghost text (tab autocomplete)
    /// is offered after each turn. SHELL-owned: updates the process-wide
    /// cache mirror and persists to `[ui].prompt_suggestions` via
    /// `Effect::PersistSetting`.
    SetPromptSuggestions(bool),
    /// Set `[scrollback.scroll].respect_manual_folds`. PAGER-owned:
    /// live-applied via `AppView::set_appearance` and persisted to
    /// pager.toml via `Effect::PersistSetting`.
    SetRespectManualFolds(bool),
    /// Set the canonical for `[ui].default_selected_permission`. Persists
    /// via `Effect::PersistSetting`. Payload is the registry's canonical
    /// string (`default` | `allow_once` | `allow_always` | `reject`).
    SetDefaultSelectedPermission(String),
    /// Set the hunk-tracker mode. Payload is the registry canonical string.
    SetHunkTrackerMode(String),
    /// Set default screen mode (`fullscreen` | `minimal`); restart-required.
    SetScreenMode(String),
    /// Toggle timestamp display on messages.
    ToggleTimestamps,
    /// Toggle compact mode (reduce user message padding).
    ToggleCompactMode,
    /// Set compact mode (reduce user message padding).
    SetCompactMode(bool),
    /// Set timestamp display on messages.
    SetTimestamps(bool),
    /// Set timeline sidebar visibility (per-turn tick rail).
    SetTimeline(bool),
    /// Set simple mode (ASCII / minimal glyphs). Persists via `Effect::PersistSetting`.
    SetSimpleMode(bool),
    /// Set the per-tip contextual-hint user config (`[ui.contextual_hints]`).
    /// Each persists via `Effect::PersistSetting` and re-resolves + re-propagates
    /// the gates to every agent's prompt immediately (runtime live-apply).
    SetContextualHintUndo(bool),
    SetContextualHintPlanMode(bool),
    SetContextualHintImageInput(bool),
    SetContextualHintSendNow(bool),
    SetContextualHintSmallScreen(bool),
    SetContextualHintWordSelect(bool),
    /// Commit the active theme (canonical name, e.g. `"kiginight"`, `"auto"`).
    SetTheme(String),
    /// Commit the theme used when the OS is in dark mode. Only updates
    /// the live display when `theme = "auto"` AND system is in dark mode.
    SetAutoDarkTheme(String),
    /// Commit the theme used when the OS is in light mode.
    SetAutoLightTheme(String),
    /// Commit the user's default model. Payload is a resolved `ModelId`
    /// (NOT a free-form string). The dispatcher switches the active
    /// session and persists via `Effect::PersistSetting`. Does not
    /// carry effort — use `Action::SwitchModel` for that.
    SetDefaultModel(acp::ModelId),
    /// Clear the persisted default model (`cfg.models.default = None`).
    /// Active session's model is unchanged; next session resolves
    /// via the shell's default-resolution chain.
    ClearDefaultModel,
    /// Commit the max-thoughts-width (column budget for the thoughts panel).
    /// Payload is `i64`; clamped to `u16` at the shell helper boundary.
    SetMaxThoughtsWidth(i64),
    /// Commit the fork-secondary model. Typed `ModelId` payload,
    /// persisted to `[ui].fork_secondary_model`. Rebroadcast via
    /// `ConfigUpdate::Ui` so running agents pick up the change.
    SetForkSecondaryModel(acp::ModelId),
    /// Clear the persisted fork-secondary model — restores to built-in
    /// default. Active agent keeps its value; next fork uses the default.
    ClearForkSecondaryModel,
    /// Commit the `show_tips` preference. Persisted to `[cli].show_tips`.
    /// Restart-required — tips are resolved once at startup.
    SetShowTips(bool),
    /// Commit the `auto_update` preference. Persisted to `[cli].auto_update`.
    /// Restart-required — auto-update check fires once at startup.
    SetAutoUpdate(bool),
    /// Commit `[ui.display_refresh].auto_cadence_enabled`. Restart-required —
    /// cadence is pinned once at startup.
    SetDisplayRefreshAutoCadence(bool),
    /// Preview a theme without persisting — updates the live display
    /// only. Used by the picker on Up/Down and Esc (revert).
    PreviewTheme(String),
    /// Preview `auto_dark_theme` without persisting. Only applies when
    /// `theme = "auto"` AND system is in dark mode.
    PreviewAutoDarkTheme(String),
    /// Preview `auto_light_theme` without persisting.
    PreviewAutoLightTheme(String),
    /// Open the settings modal (F2, `/settings`, command palette).
    /// If already open, closes it instead of stacking.
    OpenSettings,
    /// Open the command palette (`/help`). The keybinding path (Ctrl+P) opens it
    /// directly in `handle_agent_action`; this lets a slash command reach the
    /// same modal through dispatch.
    OpenCommandPalette,
    /// Open the in-TUI How-to Guides doc picker (`/docs`, palette "How-to Guides").
    OpenHowtoGuides,
    /// Open the reset-settings confirmation dialog for a specific key.
    /// Moves the Settings modal state into `ResetSettingsConfirm` so
    /// the underlying modal survives the confirm dialog.
    OpenResetConfirm {
        key: crate::settings::SettingKey,
    },
    /// Resolve the reset-settings confirmation modal.
    /// `Reset` dispatches the default value via the typed `SetX` action.
    /// `Cancel` restores the underlying Settings modal unchanged.
    ConfirmResetSetting {
        choice: crate::views::modal::ResetSettingsResult,
    },
    /// Dump the input flight recorder to a debug file.
    DumpInputLog,
    /// User selected a permission option (AllowOnce, AllowAlways, RejectAlways).
    PermissionSelect(acp::PermissionOptionId),
    /// User typed a followup message and submitted it (RejectOnce with message).
    PermissionFollowup(String),
    /// User cancelled the front permission request (Ctrl-C / Esc in Options mode).
    PermissionCancel,
    /// Log out: remove credentials and return to the login screen.
    Logout,
    /// Log out and immediately start a new login flow.
    SwitchAccount,
    /// User pressed login on the welcome screen.
    Login,
    /// User chose a specific OAuth provider row on the login picker. Routes
    /// the flow to THAT advertised method — `Login` alone resolves to the
    /// first interactive method, which sent every provider row to the Kimi
    /// device flow.
    LoginWith(acp::AuthMethodId),
    /// Cancel an in-progress login that was started from inside a session
    /// (`/login` or a 401 re-auth prompt) and return to the previous view.
    /// Distinct from `Quit`: abandoning a mid-session re-auth must not exit
    /// the app or lose the open session.
    CancelLogin,
    /// User submitted a manually-pasted auth token (loopback mode).
    SubmitAuthCode(String),
    /// User selected a Moonshot row on the welcome login picker: switch the
    /// welcome screen into API-key entry for that platform.
    BeginPlatformKeyEntry(crate::app::app_view::PlatformLogin),
    /// Esc from the API-key entry box: return to the login picker.
    CancelPlatformKeyEntry,
    /// User submitted a pasted platform API key: persist it to auth.json
    /// under the platform-id scope, then authenticate with the platform's
    /// method id. The key must never be logged.
    SubmitPlatformApiKey(String),
    /// Copy the auth URL to the clipboard during authentication.
    CopyAuthUrl,
    /// Show the raw auth URL with mouse capture disabled for manual copy.
    ShowRawAuthUrl,
    /// Hide the raw auth URL and re-enable mouse capture.
    HideRawAuthUrl,
    /// User accepted the folder-trust question: persist the grant for the cwd's
    /// workspace, mark trust resolved, and replay any deferred session startup.
    /// (Declining quits via [`Action::Quit`]; there is no decline action.)
    TrustFolder,
    /// A spawned task completed.
    TaskComplete(TaskResult),
    /// Show session info (ID, cwd, model, context usage) instantly.
    ShowSessionInfo,
    /// Show release notes in a modal.
    ShowReleaseNotes {
        title: String,
        content: String,
    },
    /// Rename the current session's title/summary.
    RenameSession {
        title: String,
    },
    /// Show detailed context usage (progress bar, token breakdown, stats).
    ShowContextInfo,
    /// Show Kimi usage/quota via the /usage command.
    ShowUsage,
    /// Commit a read-only list of the queued prompts as a system block
    /// (`/queue`). The surface minimal mode uses in place of the `QueuePane`.
    ShowQueue,
    /// Commit a read-only list of background tasks, subagents, and scheduled
    /// tasks as a system block (`/tasks`). The surface minimal mode uses in
    /// place of the `TasksPane`.
    ShowTasks,
    /// Show the current plan: preview popover if exists, toast if not.
    ShowPlan,
    /// Enter plan mode. If a description is provided, also start a turn
    /// with that text as the prompt.
    EnterPlanMode {
        description: Option<String>,
    },
    /// Set plan mode on/off. Per-session, ACP-mediated (not persisted
    /// to config.toml). `/plan <desc>` uses `EnterPlanMode` instead
    /// because it also starts a turn.
    SetPlanMode(PlanModeKind),
    /// Enter remember mode (visual prompt change, not a send).
    EnterRememberMode,
    /// Send a remember note from # mode. Routes through LLM rewrite when a
    /// session is active; falls back to direct save otherwise.
    SendRememberNote(String),
    /// Save the currently displayed remember note from the review modal.
    SaveRememberNoteFromModal,
    /// Send a /btw side question (bypasses queue, works while agent is busy).
    SendBtw(String),
    /// Request a session recap ("where was I" summary). `auto` is `true` for
    /// the automatic return-from-away recap, `false` for an explicit `/recap`.
    /// Bypasses the prompt queue (works while the agent is busy).
    SendRecap {
        auto: bool,
    },
    /// Pick a session from content (deep search) results.
    PickContentSession {
        session_id: String,
        cwd: String,
    },
    /// Pick a session from content (deep search) results and resume in a worktree.
    PickContentSessionInWorktree {
        session_id: String,
        cwd: String,
    },
    /// Delete a session from history (local + remote). Fired from the
    /// session picker: `d` arms delete confirmation on the focused row,
    /// then `y` confirms (or `n`/other cancels).
    DeleteSession {
        source: String,
        session_id: String,
        cwd: String,
    },
    /// Trigger a deep content search for sessions matching the picker query.
    TriggerDeepSearch,
    /// Force an immediate deep content search, skipping the debounce.
    ForceDeepSearch,
    /// `/fork` slash command: parsed args produced by
    /// [`crate::slash::commands::fork::parse_fork_args`]. The dispatcher
    /// resolves the worktree question (via flag or the local
    /// QuestionView modal) before constructing the placeholder.
    Fork(crate::slash::commands::fork::ForkArgs),
    /// Submit-path action emitted by the local fork worktree question
    /// modal. Routes directly to `dispatch_fork_resolved`.
    ForkAnswered {
        worktree: bool,
        directive: Option<String>,
        /// When `Some`, also persist this worktree mode preference so
        /// future `/fork` invocations skip the popup.
        persist_mode: Option<crate::app::app_view::WorktreeMode>,
    },
    /// Submit-path action emitted by the local `/new` worktree question
    /// modal. `worktree: true` creates the new session in a worktree;
    /// `worktree: false` creates it in the current cwd.
    NewSessionAnswered {
        worktree: bool,
        /// When `Some`, also persist this worktree mode preference so
        /// future `/new` invocations skip the popup.
        persist_mode: Option<crate::app::app_view::WorktreeMode>,
    },
    /// Answer from the agent-type-mismatch question modal. Shown when
    /// the shell rejects a model switch because the target model requires
    /// a different agent harness.
    AgentTypeMismatchAnswered {
        /// `true` = start a new session with the target model.
        /// `false` = cancel, return to current session.
        start_new: bool,
        model_id: acp::ModelId,
        effort: Option<ReasoningEffort>,
    },
    /// User selected a project directory from the project picker.
    ProjectSelected {
        path: std::path::PathBuf,
        stashed_prompt: String,
        /// "Don't ask me again" was chosen: persist the opt-out.
        disable_picker: bool,
    },
    /// Persist the memory modal fullscreen preference to config.toml.
    PersistMemoryFullscreen(bool),
    /// Open the Agent Dashboard view (`/dashboard`, `Ctrl+\`, `kigi dashboard`).
    OpenDashboard,
    /// Close the dashboard, returning to the previous `ActiveView`.
    ExitDashboard,
    /// Attach to a dashboard row — switches to the parent agent and
    /// (for subagent rows) sets the parent's `active_subagent`.
    DashboardAttach(crate::views::dashboard::DashboardRowId),
    /// Submit the dispatch-input contents: either a filter, a new
    /// top-level agent, or a no-op when too short.
    /// `attach` mirrors Ctrl+S (dispatch + attach / "send + open").
    DashboardDispatch {
        text: String,
        attach: bool,
    },
    /// Submit a slash command from the dashboard's dispatch input.
    /// The text starts with `/`. The dispatcher resolves it through
    /// the slash registry (builtin / ACP / unknown) without a
    /// per-agent session context — commands like `/dashboard`,
    /// `/exit`, `/theme`, `/settings`, `/help` work without a
    /// session; commands that need one return a friendly toast.
    DashboardDispatchSlash {
        text: String,
    },
    /// Pin/unpin the currently selected row.
    DashboardTogglePin,
    /// Enter inline-rename mode on the selected row.
    DashboardBeginRename,
    /// Commit a rename draft. Empty draft cancels.
    DashboardCommitRename,
    /// Cancel an in-progress rename without committing.
    DashboardCancelRename,
    /// Apply a single keystroke to the in-progress rename draft.
    DashboardRenameInput(String),
    /// Stop / kill the selected row (top-level: cancel turn → close;
    /// subagent: kill). Double-press protected for top-level rows.
    DashboardStop,
    /// Cycle the dispatch input's mode for the next spawned agent
    /// (Normal → Plan → Always-Approve → Normal). Bound to Shift+Tab.
    DashboardCycleMode,
    /// Cycle the PEEKED agent's live mode (Normal → Plan → Always-Approve
    /// → Normal) — the peek-panel counterpart to [`Self::DashboardCycleMode`].
    /// Unlike that staged dispatch mode, this changes the existing agent
    /// directly (same effect as Shift+Tab inside the agent's chat view).
    /// Emitted when Shift+Tab fires while the peek panel is open.
    DashboardPeekCycleMode,
    /// Toggle grouping (State ↔ Directory).
    DashboardToggleGrouping,
    /// Set the live filter (typically driven by the dispatch input).
    DashboardSetFilter(crate::views::dashboard::FilterValue),
    /// Move selection cursor one row down.
    DashboardSelectNext,
    /// Move selection cursor one row up.
    DashboardSelectPrev,
    /// Reorder the selected row one slot up (Shift+↑).
    DashboardReorderUp,
    /// Reorder the selected row one slot down (Shift+↓).
    DashboardReorderDown,
    /// Exit the dashboard's session-overlay (the bordered
    /// `[Prev] [Next] [✗]` chrome wrapped around an attached
    /// agent view). Returns to the dashboard with the cursor on
    /// the previously attached row. Bound to Esc / Ctrl+\\ /
    /// `[✗]` click inside the overlay.
    DashboardOverlayExit,
    /// Cycle the dashboard's session-overlay to the previous
    /// top-level agent in the row list (`[Prev]` click or
    /// Ctrl+\[).
    DashboardOverlayPrev,
    /// Cycle the dashboard's session-overlay to the next
    /// top-level agent in the row list (`[Next]` click or
    /// Ctrl+\]).
    DashboardOverlayNext,
    /// Confirmed stop from inside the dashboard's session-overlay:
    /// close the attached session and return to the dashboard. State
    /// machine documented at `dispatch_dashboard_overlay_stop`.
    DashboardOverlayStop,
    /// Toggle auto-approve (YOLO mode) on the selected row's
    /// owning agent. Mirrors `Action::ToggleYolo` but targets
    /// the dashboard's selected row instead of the active-view
    /// agent.
    DashboardToggleAutoApprove,
    /// Toggle worktree-dispatch mode: when on, the next agent dispatched
    /// from the dashboard spawns in a fresh git worktree (and the `[+ New
    /// Agent]` button reads `[+ New Worktree]`). Bound to Ctrl+W. Gated on
    /// the cwd being a git repo — worktrees require one, so the toggle is a
    /// no-op (with an explanatory toast) outside a repo.
    DashboardToggleWorktree,
    /// Open the dashboard's shortcuts cheatsheet modal — the
    /// same searchable picker as the agent view's
    /// `ShortcutsHelp`, scoped to dashboard-context bindings.
    /// Bound to Ctrl+. (default) and `?` (alt). Dispatch wires
    /// it to the modal-state field on `DashboardState`; the
    /// renderer paints it on top of the row list.
    DashboardOpenShortcutsHelp,
    /// Close the dashboard's shortcuts cheatsheet modal. Routed
    /// from the modal-chrome `CloseRequested` outcome and from
    /// Esc when the modal is open.
    DashboardCloseShortcutsHelp,
    /// Focus the header's `[+ New Agent]` button. Mirrors a
    /// row-selection action — the button becomes the cursor
    /// target, the previous row selection (if any) clears, and
    /// the dispatch input's placeholder flips back to the
    /// new-session form. Wired to Esc deselect tier, Up-arrow
    /// from the first row, and the button's mouse-click handler.
    DashboardFocusNewAgentButton,
    /// Create a new session AND open its detail view. Routed
    /// from `[+ New Agent]` click and from Enter-on-empty-prompt
    /// while the button is focused. Distinct from
    /// `DashboardDispatch` (which queues a prompt + stays on the
    /// dashboard) because the no-prompt path has no text to
    /// enqueue and the user expects to land inside the new
    /// agent's view immediately.
    DashboardCreateNewAgentWithDetail,
    /// Open the dashboard's location picker — a floating modal that
    /// lists recent project directories (plus the current cwd) and
    /// accepts a typed path, letting the user change where newly
    /// dispatched sessions run. Bound to Ctrl+L (default), a click on
    /// the header location label, and `/cd` with no argument.
    DashboardOpenLocationPicker,
    /// Close the dashboard's location picker modal without changing
    /// the working directory. Routed from Esc, the modal-chrome
    /// `CloseRequested` outcome, and a click outside the modal.
    DashboardCloseLocationPicker,
    /// Change the working directory for newly dispatched dashboard
    /// sessions. `input` is the raw path text — a picker row's path, a
    /// path typed into the picker's query field, or the `/cd <path>`
    /// argument. The dispatcher resolves `~` / relative paths against
    /// `app.cwd`, validates the target is a directory, and on success
    /// updates `app.cwd` + the process cwd (via `Effect::SetWorkingDir`).
    DashboardChangeLocation {
        input: String,
    },
    /// Confirm the dashboard worktree-label dialog: create the next
    /// dashboard agent in a fresh git worktree (rooted at `app.cwd`) using
    /// `label` (`None` → auto-generated). Any prompt stashed when the dialog
    /// opened (a prompt-send) is replayed into the new agent. Routed from
    /// the dialog's Enter submit.
    DashboardConfirmWorktree {
        label: Option<String>,
    },
    /// Answer a permission request via the dashboard peek panel.
    ///
    /// Carries `request_id` captured at peek-toggle time so that a
    /// stale answer (the front-of-queue changed between snapshot and
    /// number-key press) can be detected and dropped instead of
    /// popping the wrong permission.
    DashboardPermissionSelect {
        row: crate::views::dashboard::DashboardRowId,
        request_id: usize,
        option_id: acp::PermissionOptionId,
    },
    /// Reject the peeked agent's pending permission with a typed
    /// feedback message (the peek panel's "No, type to add feedback"
    /// path). Resolves the front request with the `RejectOnce` option
    /// and the text attached as `followup_message` meta — mirroring the
    /// agent view's `PermissionFollowup`. `request_id` guards against a
    /// stale answer if the queue rotated.
    DashboardPermissionFollowup {
        row: crate::views::dashboard::DashboardRowId,
        request_id: usize,
        text: String,
    },
    /// Answer the peeked agent's pending `AskUserQuestion` (the Ask tool)
    /// from the dashboard peek panel. `option_idx` selects an option;
    /// `None` with non-empty `freeform` submits the "Other" free-text
    /// answer. Only valid for a single-question, single-select ext ask.
    DashboardQuestionAnswer {
        row: crate::views::dashboard::DashboardRowId,
        option_idx: Option<usize>,
        freeform: String,
    },
    /// Send / queue a reply to the peeked agent from the dashboard
    /// peek panel's `❯ reply` input. The reply targets `row`'s owning
    /// top-level agent: when it is idle the prompt is sent immediately
    /// (a turn starts), when it is mid-turn the prompt is queued and
    /// drains after the current turn finishes. `attach` (Ctrl+S)
    /// additionally walks into the agent's detail view.
    DashboardPeekReply {
        row: crate::views::dashboard::DashboardRowId,
        text: String,
        attach: bool,
    },
    /// Open the memory browser modal.
    OpenMemoryModal,
    /// Open the hidden `/gboom` easter egg (DOOM-style raycaster modal).
    OpenGboom,
    /// Suspend the TUI and open a file in $EDITOR.
    SuspendForEditor {
        path: std::path::PathBuf,
        /// Reload `/config-agents` list after the editor exits (when set).
        refresh_agents_modal: Option<crate::views::agents_modal::AgentsTab>,
    },
    /// Toggle the expanded goal detail overlay.
    ToggleGoalDetail,
    Rewind,
    RewindShowPicker,
    RewindPickerSelect(usize),
    RewindSelectMode(crate::views::rewind::RewindMode, usize),
    RewindConfirm(usize, crate::views::rewind::RewindMode),
    RewindConversationOnlyConfirm(usize),
    RewindCancelOffer,
    RewindDismiss,
    RewindBackToModeSelect,
    RewindDismissError,
    /// Submit an inline edit: conversation-only rewind to that prompt, then
    /// resubmit the edited text (state lives on `AgentView::inline_edit`).
    InlineEditSubmit,
    /// Open the `/jump` turn picker.
    JumpShowPicker,
    /// Jump to a turn by its prompt's stable id and close the picker.
    JumpPickerSelect(EntryId),
    /// Close the picker and restore the stashed viewport.
    JumpDismiss,
}
/// Persist-and-notify semantics for [`Effect::PersistPermissionMode`].
///
/// Both variants write to `~/.kigi/config.toml` and route ACP
/// `kigi/yolo_mode_changed` notifications. The ACP notification is
/// gated on disk-write success when `WithRollback` is used.
#[derive(Debug, Clone, Copy, PartialEq, Eq)]
pub enum PermissionModePersist {
    /// Typed-setter path: on disk-write failure, revert in-memory state
    /// to the prior canonical (`&'static str`). ACP notification is
    /// suppressed on failure so the agent never sees the optimistic value.
    /// The soft-default latch is NOT restored — a failed persist leaves the
    /// mode user-claimed until restart, matching the cycle path.
    WithRollback(&'static str),
    /// Cycle-mode path: no clean single-field rollback. On disk failure,
    /// logs a warning and leaves in-memory state at the optimistic value.
    /// ACP notification fires unconditionally.
    BestEffort,
}
/// Canonical permission-mode state for the `permission_mode` setting.
///
/// `Default` and `Ask` both project onto `yolo_mode = false` at runtime
/// but are distinct on disk — `Default` expresses "use the agent's
/// default" while `Ask` is the explicit "prompt me every time".
/// `Auto` uses the LLM classifier (not full always-approve).
#[derive(Debug, Clone, Copy, PartialEq, Eq)]
pub enum PermissionModeKind {
    /// Agent's default behavior (prompt). `yolo_mode = false`.
    Default,
    /// Explicit prompt-every-time. `yolo_mode = false`.
    Ask,
    /// LLM classifier for non-fast-path tools. `yolo_mode = false`, `auto_mode = true`.
    Auto,
    /// Auto-approve all tool actions. `yolo_mode = true`.
    AlwaysApprove,
}
impl PermissionModeKind {
    /// Canonical persisted/wire string for the kind. Matches the
    /// `EnumChoice.canonical` values in
    /// `settings/defs.rs::PERMISSION_MODE_CHOICES`.
    pub fn as_canonical(self) -> &'static str {
        match self {
            Self::Default => "default",
            Self::Ask => "ask",
            Self::Auto => "auto",
            Self::AlwaysApprove => "always-approve",
        }
    }
    /// Bool projection onto the YOLO runtime flag — `AlwaysApprove
    /// → true`, everything else → `false`. Used by `set_yolo_mode_inner`
    /// to perform the actual state mutation (`agent.session.yolo_mode`,
    /// `app.default_yolo`, permission_queue drain) without caring
    /// about the canonical distinction. The canonical is restored
    /// afterwards by `set_permission_mode`.
    pub fn is_always_approve(self) -> bool {
        matches!(self, Self::AlwaysApprove)
    }
    /// LLM classifier mode (distinct from always-approve).
    pub fn is_auto(self) -> bool {
        matches!(self, Self::Auto)
    }
    /// Construct from a canonical string. Returns `None` for unknown
    /// strings. Used by `apply_setting_rollback("permission_mode", _)`
    /// to recover the typed kind from the `SettingValue::Enum(canonical)`
    /// rollback payload.
    pub fn from_canonical(s: &str) -> Option<Self> {
        match s {
            "default" => Some(Self::Default),
            "ask" => Some(Self::Ask),
            "auto" => Some(Self::Auto),
            "always-approve" => Some(Self::AlwaysApprove),
            _ => None,
        }
    }
}
#[cfg(test)]
mod permission_mode_kind_tests {
    use super::PermissionModeKind;
    #[test]
    fn auto_is_distinct_from_always_approve() {
        let auto = PermissionModeKind::Auto;
        assert_eq!(auto.as_canonical(), "auto");
        assert!(!auto.is_always_approve());
        assert!(auto.is_auto());
        assert_eq!(
            PermissionModeKind::from_canonical("auto"),
            Some(PermissionModeKind::Auto)
        );
        assert_ne!(
            PermissionModeKind::Auto.as_canonical(),
            PermissionModeKind::AlwaysApprove.as_canonical()
        );
    }
    #[test]
    fn permission_mode_choices_include_auto_in_catalog() {
        for c in ["default", "ask", "auto", "always-approve"] {
            assert!(
                PermissionModeKind::from_canonical(c).is_some(),
                "catalog canonical {c} must parse"
            );
        }
    }
}
/// Canonical on/off state for `plan_mode`. Binary today (single bit
/// on `agent.plan_mode_active`); typed enum so a future third state
/// can be added without churning dispatcher arms.
#[derive(Debug, Clone, Copy, PartialEq, Eq)]
pub enum PlanModeKind {
    /// Agent in `SessionMode::Plan` — no tool writes, plan-first.
    On,
    /// Agent in `SessionMode::Default`.
    Off,
}
impl PlanModeKind {
    /// Canonical persisted/wire string for the kind. Matches the
    /// `EnumChoice.canonical` values in
    /// `settings/defs.rs::PLAN_MODE_CHOICES`.
    pub fn as_canonical(self) -> &'static str {
        match self {
            Self::On => "on",
            Self::Off => "off",
        }
    }
    /// Display label used in the toast and the picker. Mirrors
    /// `EnumChoice.display`.
    pub fn as_display(self) -> &'static str {
        match self {
            Self::On => "On",
            Self::Off => "Off",
        }
    }
    /// Bool projection — `On → true`, `Off → false`. Used by the
    /// dispatcher's idempotency check against `plan_mode_active`.
    pub fn to_bool(self) -> bool {
        matches!(self, Self::On)
    }
    /// Construct from a bool (the inverse of [`Self::to_bool`]).
    pub fn from_bool(b: bool) -> Self {
        if b { Self::On } else { Self::Off }
    }
}
/// Async side effect produced by [`super::dispatch::dispatch`].
///
/// The event loop spawns these into a `JoinSet`. When they complete,
/// the result is wrapped in [`TaskResult`] and fed back through
/// `Action::TaskComplete`.
/// What user gesture triggered a turn cancel. Recorded on `session/cancel`'s
/// `_meta.cancelTrigger` so the agent's `mid_turn_abort` telemetry can tell
/// ESC from Ctrl+C (and a mouse click on the cancel button) apart. Free-form
/// on the wire (the agent stores it in `cancellation_context`), so adding a
/// variant needs no agent/schema change.
#[derive(Debug, Clone, Copy, PartialEq, Eq)]
pub enum CancelTrigger {
    /// Wire value `"esc"` (set only by the Esc cancel-retry while
    /// TurnCancelling; a bare Esc no longer starts a cancel).
    Esc,
    /// `Ctrl+C` pressed (the default cancel keybinding).
    CtrlC,
    /// The on-screen cancel button was clicked.
    Mouse,
}
impl CancelTrigger {
    /// Snake_case wire string sent as `_meta.cancelTrigger`.
    pub fn as_wire_str(self) -> &'static str {
        match self {
            Self::Esc => "esc",
            Self::CtrlC => "ctrl_c",
            Self::Mouse => "mouse",
        }
    }
}
/// Where a deferred clipboard-attachment paste lands once the off-thread probe
/// finishes (see [`Effect::ProbeClipboardAttachment`]).
#[derive(Debug, Clone)]
pub enum ClipboardPasteTarget {
    /// Agent prompt input. `images_dir` is the session images dir used for the
    /// off-thread persist (`None` when no session exists yet).
    AgentPrompt {
        agent_id: AgentId,
        images_dir: Option<std::path::PathBuf>,
    },
    /// Dashboard new-session dispatch input.
    DashboardDispatch,
    /// Dashboard peek reply input. `row` is the peeked row at enqueue time; the
    /// completion drops the paste if the panel closed or moved to another row,
    /// so the attachment can't land in a different agent's reply.
    DashboardPeek {
        row: crate::views::dashboard::DashboardRowId,
    },
}
impl ClipboardPasteTarget {
    /// Telemetry surface label for the empty-clipboard paste-key event.
    pub fn surface_str(&self) -> &'static str {
        match self {
            Self::AgentPrompt { .. } => "agent",
            Self::DashboardDispatch => "dashboard",
            Self::DashboardPeek { .. } => "peek",
        }
    }
}
/// Result of the originating CLIPBOARD text read.
#[derive(Debug, Clone, Eq, PartialEq)]
pub enum ClipboardTextRead {
    /// The text backend completed; `None` means it successfully found no text.
    Success(Option<String>),
    /// The text backend failed, so emptiness is unknown.
    Failed,
}
impl ClipboardTextRead {
    pub fn from_result<E>(result: Result<Option<String>, E>) -> Self {
        match result {
            Ok(text) => Self::Success(text),
            Err(_) => Self::Failed,
        }
    }
    pub fn as_deref(&self) -> Option<&str> {
        match self {
            Self::Success(text) => text.as_deref(),
            Self::Failed => None,
        }
    }
}
/// Result of inserting clipboard text into a target.
#[derive(Clone, Copy, Debug, Eq, PartialEq)]
pub enum ClipboardTextInsertion {
    /// The target accepted and applied the text operation.
    Inserted,
    /// The payload had no pasteable text.
    Empty,
    /// The target rejected a non-empty text operation.
    Failed,
}
#[derive(Debug, Clone)]
pub enum ClipboardPasteSource {
    /// Ctrl/Cmd+V: CLIPBOARD text was read before the attachment probe.
    ClipboardKey {
        text: ClipboardTextRead,
        tip_showing: bool,
    },
    /// Dashboard bracketed text waits for the attachment probe's image-wins decision.
    BracketedDeferred { text: String },
    /// Agent bracketed text was inserted synchronously before probing attachments.
    BracketedInserted {
        text: String,
        insertion: ClipboardTextInsertion,
    },
}
impl ClipboardPasteSource {
    pub fn text(&self) -> Option<&str> {
        match self {
            Self::ClipboardKey { text, .. } => text.as_deref(),
            Self::BracketedDeferred { text } | Self::BracketedInserted { text, .. } => Some(text),
        }
    }
    pub fn is_clipboard_key(&self) -> bool {
        matches!(self, Self::ClipboardKey { .. })
    }
    pub fn is_bracketed(&self) -> bool {
        !self.is_clipboard_key()
    }
    pub fn tip_showing(&self) -> bool {
        matches!(
            self,
            Self::ClipboardKey {
                tip_showing: true,
                ..
            }
        )
    }
    pub fn text_read_failed(&self) -> bool {
        matches!(
            self,
            Self::ClipboardKey {
                text: ClipboardTextRead::Failed,
                ..
            }
        )
    }
    pub fn text_to_insert_on_miss(&self) -> Option<&str> {
        match self {
            Self::ClipboardKey { text, .. } => text.as_deref(),
            Self::BracketedDeferred { text } => Some(text),
            Self::BracketedInserted { .. } => None,
        }
    }
    pub fn synchronous_insertion(&self) -> Option<ClipboardTextInsertion> {
        match self {
            Self::BracketedInserted { insertion, .. } => Some(*insertion),
            _ => None,
        }
    }
}
/// Completion context carried through one deferred clipboard-attachment paste.
#[derive(Debug, Clone)]
pub struct ClipboardPasteContext {
    pub target: ClipboardPasteTarget,
    pub source: ClipboardPasteSource,
}
#[derive(Clone, Copy, Debug, Eq, PartialEq)]
pub enum ClipboardPasteFailure {
    /// CLIPBOARD text could not be read.
    TextRead,
    /// Image/file attachment probing failed.
    AttachmentRead,
    /// The target rejected text without showing its own message.
    TargetInsertion,
    /// The target already showed a persistence/insertion message.
    AlreadyReported,
}
/// Result after the originating target applies a clipboard probe.
#[derive(Clone, Copy, Debug, Eq, PartialEq)]
pub enum ClipboardPasteCompletion {
    /// Text, image, or file URL reached the target.
    Handled,
    /// All local reads completed successfully with no payload.
    FullMiss,
    /// The result was intentionally discarded because its target or baseline went stale.
    Dropped,
    /// The probe, persistence, or target insertion failed.
    Failed(ClipboardPasteFailure),
}
pub fn reduce_clipboard_paste_completion(
    source: &ClipboardPasteSource,
    attachment: ClipboardPasteCompletion,
    file: Option<ClipboardPasteCompletion>,
    text: Option<ClipboardTextInsertion>,
) -> ClipboardPasteCompletion {
    match attachment {
        ClipboardPasteCompletion::FullMiss => {}
        other => return other,
    }
    if let Some(file) = file {
        return file;
    }
    if source.text_read_failed() {
        return ClipboardPasteCompletion::Failed(ClipboardPasteFailure::TextRead);
    }
    if let Some(insertion) = text.or(source.synchronous_insertion()) {
        return match insertion {
            ClipboardTextInsertion::Inserted => ClipboardPasteCompletion::Handled,
            ClipboardTextInsertion::Empty => ClipboardPasteCompletion::FullMiss,
            ClipboardTextInsertion::Failed => {
                ClipboardPasteCompletion::Failed(ClipboardPasteFailure::TargetInsertion)
            }
        };
    }
    ClipboardPasteCompletion::FullMiss
}
/// Outcome of the off-thread image portion of a clipboard attachment probe.
#[derive(Debug)]
pub enum ProbedAttachment {
    /// Decoded (and, for the agent, persisted) image ready to insert.
    Image(crate::prompt_images::PastedImage),
    /// The session persist failed; the completion shows a toast.
    PersistFailed(String),
    /// The pasteboard probe completed normally without raster data.
    NoRaster,
    /// The attachment result was intentionally discarded because its baseline went stale.
    ProbeDropped,
    /// The attachment probe task failed or timed out.
    ProbeFailed,
}
#[derive(Debug)]
pub enum Effect {
    /// Create a new ACP session.
    CreateSession {
        agent_id: AgentId,
        cwd: std::path::PathBuf,
        /// When set, injected as `_meta.modelId` into the
        /// `NewSessionRequest` so the shell spawns the session with
        /// the correct model and agent type from the start — avoids a
        /// follow-up `SetSessionModel` roundtrip.
        model_id: Option<acp::ModelId>,
        /// Client-chosen session ID (`--session-id` / `meta.sessionId`).
        preferred_session_id: Option<String>,
        /// Gateway light-frontend for **this** session only (`/chat` one-shot
        /// or CLI `--chat` via `SessionFlags.chat_mode`). Does not sticky-set
        /// process-wide mode.
        chat_kind: bool,
    },
    /// Change the process working directory (project-picker selection).
    SetWorkingDir { path: std::path::PathBuf },
    /// Create a git worktree and then create or load an ACP session in it.
    /// When `load_session_id` is `Some`, loads that session in the new worktree
    /// instead of creating a fresh one (`--resume` + `--worktree` combination).
    CreateWorktreeSession {
        agent_id: AgentId,
        load_session_id: Option<String>,
        label: Option<String>,
        /// Optional branch/tag/commit to base the worktree on (CLI `--ref`).
        git_ref: Option<String>,
        /// Staged dashboard `/model` selection, injected as `_meta.modelId`
        /// into the worktree's `NewSessionRequest` so it spawns with the
        /// right model — mirrors [`Effect::CreateSession::model_id`]. `None`
        /// for the welcome / CLI / fork paths.
        model_id: Option<acp::ModelId>,
        /// Client-chosen session ID (`--session-id` with `--worktree`) used as
        /// the worktree/session id and `meta.sessionId` on fresh create.
        /// Ignored when `load_session_id` is set (resume path owns the id).
        preferred_session_id: Option<String>,
        /// One-shot `/chat` or sticky `--chat` — stamp `_meta` kind=chat on
        /// fresh create (resume uses `LoadSession.chat_kind` instead).
        chat_kind: bool,
    },
    /// Load (resume) an existing ACP session by ID.
    ///
    /// `session_cwd` overrides the CWD sent in the `LoadSessionRequest`.
    /// This is needed when resuming a session that was created in a different
    /// CWD (e.g., a worktree) than the one the user is currently in.
    ///
    /// Strict load — does not create if missing.
    ///
    /// `chat_kind` is the conversation-entry bit; effects also stamp kind=chat
    /// when [`SessionFlags::chat_mode`] (`--chat`) is set.
    LoadSession {
        agent_id: AgentId,
        session_id: String,
        session_cwd: Option<std::path::PathBuf>,
        /// Conversation-entry bit (`source == "conversation"`), not sticky `--chat`.
        chat_kind: bool,
    },
    /// Scan enabled foreign session stores without delaying the native list.
    ScanForeignSessions {
        cwd: std::path::PathBuf,
        compat: kigi_workspace::foreign_sessions::EnabledForeignSessionSources,
        kigi_home: std::path::PathBuf,
        coordinator: crate::app::ForeignScanCoordinator,
        seq: u64,
    },
    /// Canonicalize the launch cwd off the event-loop thread before store access.
    CanonicalizeForeignResumeCwd {
        requested_cwd: std::path::PathBuf,
        launch_token: u64,
    },
    /// Detect the newest resumable foreign session without delaying first paint.
    DetectForeignResumeHint {
        canonical_cwd: std::path::PathBuf,
        compat: kigi_workspace::foreign_sessions::EnabledForeignSessionSources,
        kigi_home: std::path::PathBuf,
        launch_token: u64,
    },
    /// Fetch session list for the welcome screen session picker.
    FetchSessionList {
        /// Text search pushed down to `kigi/session/list` as `query` (chat
        /// mode: forwarded to the backend conversations search). `None`
        /// fetches the unfiltered list.
        query: Option<String>,
        /// Snapshot of [`crate::app::app_view::AppView::session_picker_list_seq`];
        /// the response is dropped when no longer current, so out-of-order
        /// completions can't clobber newer results.
        seq: u64,
    },
    /// Coalesce picker search keystrokes: fires
    /// [`TaskResult::SessionSearchDebounceExpired`] after a short sleep; the
    /// expiry acts only if `seq` is still current (Build: FTS5 deep search
    /// against the deep-search seq; chat: server refetch against the list seq).
    DebounceSessionSearch { query: String, seq: u64 },
    /// Fetch the leader session roster (FleetView dashboard) via
    /// `kigi/sessions/list`. Only issued in leader mode while the
    /// dashboard is open.
    FetchRoster,
    /// Fetch the local on-disk session list (dormant/idle sessions) for the
    /// dashboard via `kigi/session/list` — the non-leader fallback for the
    /// FleetView roster. Issued while the dashboard is open and NOT in leader
    /// mode so the dashboard shows idle sessions instead of being empty.
    FetchDashboardSessions,
    /// Load card detail for a specific session (lazy, reads chat history from disk).
    LoadCardDetail {
        source: String,
        session_id: String,
        cwd: String,
        generation: u64,
    },
    /// Restore a remote session from GCS then load it. Only Build rows reach
    /// this effect: conversation rows have no GCS archive.
    RestoreAndLoadSession {
        agent_id: AgentId,
        session_id: String,
        session_cwd: String,
    },
    /// Send a prompt to the agent.
    SendPrompt {
        agent_id: AgentId,
        session_id: acp::SessionId,
        text: String,
        /// Client-generated UUID echoed back on every notification + the
        /// PromptResponse so the client can correlate them to this prompt.
        prompt_id: String,
        /// Recognized slash-token byte ranges into `text`, stamped into the
        /// content block `_meta` (`skillTokenRanges`) when non-empty so
        /// replay restyles the echo like the composer did. Contract: the
        /// offsets index the block's `text` displayed verbatim — never
        /// combined with a `displayText` override.
        skill_token_ranges: Vec<std::ops::Range<usize>>,
    },
    /// Send a direct bash command to the agent (with typed PromptBlockMeta).
    SendBashCommand {
        agent_id: AgentId,
        session_id: acp::SessionId,
        command: String,
        /// See [`Effect::SendPrompt::prompt_id`].
        prompt_id: String,
    },
    /// Cancel the current turn.
    CancelTurn {
        session_id: acp::SessionId,
        cancel_subagents: bool,
        /// What user gesture triggered the cancel (ESC / Ctrl+C / mouse), sent
        /// on `session/cancel` as `_meta.cancelTrigger` so the agent's
        /// `mid_turn_abort` telemetry can distinguish them. `None` for
        /// programmatic cancels (login/reauth flows).
        trigger: Option<CancelTrigger>,
        /// Ask the shell to trim the in-flight prompt from session history when
        /// the turn is still pristine (no server activity), sent as
        /// `_meta.rewindIfPristine`. Set true ONLY when the pager has locally
        /// rewound the prompt back into the composer, so the shell's history
        /// matches the UI. Without it the shell keeps the prompt plus an
        /// interruption marker, and a later resend pairs the kept copy with the
        /// resend — the send+Ctrl+C double-prompt bug.
        rewind_if_pristine: bool,
    },
    /// Run a manual `/compact` command.
    Compact {
        agent_id: AgentId,
        session_id: acp::SessionId,
    },
    /// Kill a background task.
    KillBgTask {
        session_id: acp::SessionId,
        task_id: String,
    },
    /// Cancel a subagent via `kigi/subagent/cancel`.
    KillSubagent {
        session_id: acp::SessionId,
        subagent_id: String,
    },
    DeleteScheduledTask {
        session_id: acp::SessionId,
        task_id: String,
    },
    /// Demote a foreground execute tool to background.
    DemoteToBackground {
        session_id: acp::SessionId,
        tool_call_id: String,
    },
    /// Switch active model.
    SwitchModel {
        agent_id: AgentId,
        session_id: acp::SessionId,
        model_id: acp::ModelId,
        effort: Option<ReasoningEffort>,
        /// The model that was active before the optimistic UI update
        /// in `set_default_model`. `None` for `Action::SwitchModel`
        /// (no optimistic update). Threaded through to
        /// `SwitchModelComplete` so `IncompatibleAgent` can roll back.
        prev_model_id: Option<acp::ModelId>,
    },
    /// Persist memory modal fullscreen preference to `[hints]` in config.toml.
    PersistMemoryFullscreen { fullscreen: bool },
    /// Persist the project-picker opt-out to `[hints] project_picker_disabled`.
    PersistProjectPickerDisabled { disabled: bool },
    /// Persist the dashboard's `[dashboard]` configuration to `~/.kigi/config.toml`.
    /// Edge case 15: multi-pager safe via `config_toml_edit::read_config_document_for_edit`,
    /// which loads → modifies → writes the whole document. Concurrent
    /// pagers may produce last-writer-wins behaviour but never corrupt
    /// the file.
    PersistDashboard(crate::views::dashboard::PersistedDashboard),
    /// Persist a per-command worktree mode preference to `[hints]` in
    /// config.toml. `config_key` is the TOML key under `[hints]`
    /// (`"new_session_worktree_mode"` or `"fork_worktree_mode"`).
    PersistWorktreeMode {
        mode: crate::app::app_view::WorktreeMode,
        config_key: &'static str,
    },
    /// Persist preferred model (and effort if Some) to config.toml.
    PersistPreferredModel {
        model_id: acp::ModelId,
        reasoning_effort: Option<ReasoningEffort>,
    },
    /// Persist the permission mode to config.toml and notify the agent
    /// via ACP. See [`PermissionModePersist`] for rollback semantics.
    PersistPermissionMode {
        /// One of `"ask"`, `"always-approve"`, or `"default"`.
        canonical: &'static str,
        session_id: Option<acp::SessionId>,
        persist: PermissionModePersist,
    },
    /// Persist a typed setting to `~/.kigi/config.toml`. On failure,
    /// rolls the in-memory cache back to `rollback_value`.
    PersistSetting {
        key: crate::settings::SettingKey,
        value: crate::settings::SettingValue,
        rollback_value: crate::settings::SettingValue,
    },
    /// Send structured prompt blocks to the agent.
    /// Used for skill injection where the prompt consists of
    /// multiple content blocks (metadata + skill body).
    SendPromptBlocks {
        agent_id: AgentId,
        session_id: acp::SessionId,
        blocks: Vec<acp::ContentBlock>,
        /// See [`Effect::SendPrompt::prompt_id`].
        prompt_id: String,
    },
    /// Cancel-and-send: `session/prompt` stamped with `_meta.sendNow`, so the
    /// shell cancels the running turn and runs this prompt next (background
    /// tasks and the rest of the queue survive). Carries structured blocks so
    /// pasted images ride along.
    SendPromptNow {
        agent_id: AgentId,
        session_id: acp::SessionId,
        blocks: Vec<acp::ContentBlock>,
        /// See [`Effect::SendPrompt::prompt_id`].
        prompt_id: String,
    },
    /// Toggle plan mode — fire-and-forget signal to the shell.
    TogglePlanMode { session_id: acp::SessionId },
    /// Remove a server-owned queued prompt: fire-and-forget
    /// `kigi/queue/remove`. The agent re-broadcasts the authoritative queue.
    QueueRemove {
        session_id: acp::SessionId,
        id: String,
        expected_version: u64,
    },
    /// Reorder server-owned queued prompts: fire-and-forget `kigi/queue/reorder`.
    QueueReorder {
        session_id: acp::SessionId,
        ordered_ids: Vec<String>,
    },
    /// Clear the caller's server-owned queued prompts: fire-and-forget
    /// `kigi/queue/clear`.
    QueueClear { session_id: acp::SessionId },
    /// Replace the text of a server-owned queued prompt in place: fire-and-forget
    /// `kigi/queue/edit`. The session actor's serialized mailbox makes this
    /// last-writer-wins for concurrent edits; the rebroadcast of
    /// `kigi/queue/changed` is the truth signal.
    QueueEdit {
        session_id: acp::SessionId,
        id: String,
        new_text: String,
    },
    /// Interject a server-owned queued prompt into the running turn:
    /// fire-and-forget `kigi/queue/interject`. The session actor atomically
    /// removes it from the queue and merges its text into the in-flight turn,
    /// then broadcasts both the interjection and the authoritative queue.
    /// `new_text` (when `Some`, serialized as `newText`) replaces the stored
    /// queue text in the interjection — same single version check, so a stale
    /// version no-ops the edit too. If the turn already ended, the agent
    /// saves a version-matching `new_text` to the row as an LWW edit instead
    /// (the edit survives and drains; it is never silently lost).
    QueueInterject {
        session_id: acp::SessionId,
        id: String,
        expected_version: u64,
        new_text: Option<String>,
    },
    /// Set the session mode via ACP `session/set_mode`.
    SetSessionMode {
        session_id: acp::SessionId,
        mode_id: acp::SessionModeId,
    },
    /// Set session mode then send a prompt, sequentially in one task.
    /// Used by `/plan <desc>` to guarantee the mode switch ACP call
    /// completes before the prompt is dispatched.
    SetModeThenPrompt {
        session_id: acp::SessionId,
        mode_id: acp::SessionModeId,
        agent_id: AgentId,
        text: String,
        prompt_id: String,
        /// See [`Effect::SendPrompt::skill_token_ranges`].
        skill_token_ranges: Vec<std::ops::Range<usize>>,
    },
    /// Fetch prompt history for the current session from the ACP agent.
    /// `session_id` scopes the per-CWD history file to this session (the agent's
    /// `filter_session_id` param), so up-arrow recall and the `/history`
    /// panel show only the current session's prompts.
    FetchPromptHistory {
        agent_id: AgentId,
        cwd: std::path::PathBuf,
        session_id: String,
    },
    /// Resolve the running agent name for a session (`kigi/session/info`).
    FetchSessionAgentName {
        agent_id: AgentId,
        session_id: acp::SessionId,
    },
    /// Send AuthenticateRequest to the agent.
    Authenticate {
        request_seq: u64,
        method_id: acp::AuthMethodId,
        use_oauth: bool,
        force_interactive: bool,
    },
    /// Poll for auth URL from the agent (ext request).
    PollAuthUrl { request_seq: u64 },
    /// Submit a manually-pasted auth code (ext request).
    SubmitAuthCode { request_seq: u64, code: String },
    /// Persist a platform API key to auth.json (platform-id scope), then
    /// send AuthenticateRequest with the platform's method id. SECURITY: the
    /// key must never appear in logs or errors.
    PersistPlatformApiKeyAndAuthenticate {
        request_seq: u64,
        target: crate::app::app_view::PlatformLogin,
        key: String,
    },
    /// Fetch MCP server list from the shell (kigi/mcp/list).
    FetchMcpsList {
        agent_id: AgentId,
        session_id: acp::SessionId,
        cache: bool,
    },
    /// Trigger MCP OAuth for a server (kigi/mcp/auth_trigger).
    McpAuthTrigger {
        agent_id: AgentId,
        session_id: acp::SessionId,
        server_name: String,
    },
    /// Fetch hooks list from the shell (kigi/hooks/list).
    FetchHooksList {
        agent_id: AgentId,
        session_id: acp::SessionId,
    },
    /// Fetch plugins list from the shell (kigi/plugins/list).
    FetchPluginsList {
        agent_id: AgentId,
        session_id: acp::SessionId,
    },
    /// Execute a hooks management action via ACP.
    HooksAction {
        agent_id: AgentId,
        session_id: acp::SessionId,
        action: kigi_hooks_plugins_types::HooksAction,
    },
    /// Execute a plugins management action via ACP.
    PluginsAction {
        agent_id: AgentId,
        session_id: acp::SessionId,
        action: kigi_hooks_plugins_types::PluginsAction,
    },
    /// Fetch skills list from the shell (kigi/skills/list).
    FetchSkillsList {
        agent_id: AgentId,
        session_id: acp::SessionId,
    },
    /// Toggle a skill via kigi/skills/toggle (enable/disable without restart).
    ToggleSkill {
        agent_id: AgentId,
        session_id: acp::SessionId,
        skill_name: String,
        enabled: bool,
    },
    /// Upsert an MCP server via kigi/mcp/upsert.
    UpsertMcpServer {
        agent_id: AgentId,
        session_id: acp::SessionId,
        name: String,
        config: Box<kigi_shell::util::config::McpServerConfig>,
    },
    /// Delete an MCP server via kigi/mcp/delete.
    DeleteMcpServer {
        agent_id: AgentId,
        session_id: acp::SessionId,
        server_name: String,
    },
    /// Live-toggle an MCP server via kigi/mcp/toggle (no restart needed).
    ToggleMcpServer {
        agent_id: AgentId,
        session_id: acp::SessionId,
        server_name: String,
        enabled: bool,
    },
    /// Toggle a single MCP tool via kigi/mcp/toggle_tool.
    ToggleMcpTool {
        agent_id: AgentId,
        session_id: acp::SessionId,
        server_name: String,
        tool_name: String,
        enabled: bool,
    },
    /// Fetch and display session info via kigi/session/info.
    ShowSessionInfo {
        agent_id: AgentId,
        session_id: acp::SessionId,
        show_resolved_model: bool,
    },
    /// Fetch and display detailed context usage via kigi/session/info.
    ShowContextInfo {
        agent_id: AgentId,
        session_id: acp::SessionId,
    },
    /// Fetch current bundle cache status via `kigi/bundle/status`.
    FetchBundleStatus,
    /// Fetch a bundled entry's raw content via `kigi/bundle/entry/get`.
    FetchCatalogEntry { kind: String, name: String },
    /// Save a remember note to global MEMORY.md (async file write).
    SaveMemoryNote {
        agent_id: AgentId,
        text: String,
        cwd: std::path::PathBuf,
    },
    /// Send raw note to kigi/memory/rewrite for LLM-powered reformatting.
    /// On success, the rewritten text populates the prompt for inline review.
    /// On failure, falls back to showing the raw text for review.
    RewriteMemoryNote {
        agent_id: AgentId,
        session_id: acp::SessionId,
        raw_text: String,
        context_summary: String,
        /// Monotonic nonce to correlate this request with the modal that
        /// opened it, so stale results don't populate a different review.
        nonce: u64,
    },
    /// Re-fetch available commands (including skills) from the shell.
    ///
    /// Sent after `SessionCreated` / `WorktreeSessionCreated` to work around
    /// a race where the shell's `AvailableCommandsUpdate` notification arrives
    /// before the pager has set `session_id`, causing it to be silently dropped.
    RefreshAvailableCommands {
        agent_id: AgentId,
        cwd: std::path::PathBuf,
    },
    /// Fire a /btw side question via kigi/btw ext method.
    SendBtw {
        agent_id: AgentId,
        session_id: acp::SessionId,
        question: String,
    },
    /// Request a session recap via the kigi/recap ext method. Fire-and-forget:
    /// the recap arrives later as a `SessionRecap` notification.
    SendRecap {
        session_id: acp::SessionId,
        auto: bool,
    },
    /// Send a mid-turn interjection via kigi/interject ext method.
    SendInterject {
        agent_id: AgentId,
        session_id: acp::SessionId,
        text: String,
        /// Client-minted id echoed back on the `kigi/session/interjection`
        /// broadcast so the originator can dedup its optimistic local block.
        interjection_id: String,
        /// Structured text + image content blocks. `None` for text-only
        /// interjections — the wire shape stays byte-identical to legacy.
        blocks: Option<Vec<acp::ContentBlock>>,
    },
    /// Log out via `kigi/auth/logout` (shell clears auth.json + in-memory state).
    Logout,
    /// Log out then authenticate sequentially in one task.
    SwitchAccount {
        request_seq: u64,
        method_id: acp::AuthMethodId,
        use_oauth: bool,
    },
    /// Clear the "copied!" feedback after a delay.
    ScheduleClearAuthCopied,
    /// Register the current session in the active-sessions crash-recovery
    /// registry (`~/.kigi/active_sessions.json`).
    RegisterActiveSession {
        session_id: acp::SessionId,
        cwd: String,
    },
    /// Unregister a session from the active-sessions registry (clean exit).
    UnregisterActiveSession { session_id: acp::SessionId },
    /// Quit the application.
    Quit,
    /// Rename the current session.
    RenameSession {
        agent_id: AgentId,
        session_id: acp::SessionId,
        title: String,
        cwd: std::path::PathBuf,
    },
    /// Delete a session's stored data (local + remote) via
    /// `kigi/session/delete`.
    DeleteSession {
        source: String,
        session_id: String,
        cwd: String,
    },
    /// Deep-search sessions by content (FTS via ACP).
    DeepSearchSessions { query: String, seq: u64 },
    /// Call `kigi/session/fork` to create a peer session that resumes
    /// from `parent_session_id` in the same cwd (no worktree). Mirror of
    /// the worktree branch of [`Effect::CreateWorktreeSession`]; the
    /// worktree-fork path reuses `CreateWorktreeSession { load_session_id }`
    /// directly so we get worktree creation + code restore for free.
    ForkSession {
        agent_id: AgentId,
        parent_session_id: acp::SessionId,
        parent_cwd: std::path::PathBuf,
        /// Whether the parent session lives in a git worktree. When `true`,
        /// the fork payload sets `sourceWorkspaceDir` so the shell preserves
        /// prompt-display provenance.
        parent_is_worktree: bool,
        /// Optional client-chosen ID for the forked session (`--session-id`
        /// with `--fork-session`).
        new_session_id: Option<String>,
    },
    /// Read the display title (and its `/rename` manual-ness) from local
    /// `summary.json` (post-resume UI label + prompt-border title).
    HydrateSessionTitleFromDisk {
        agent_id: AgentId,
        session_id: acp::SessionId,
        cwd: std::path::PathBuf,
    },
    FetchRewindPoints {
        agent_id: AgentId,
        session_id: acp::SessionId,
    },
    RewindPreview {
        agent_id: AgentId,
        session_id: acp::SessionId,
        target_prompt_index: usize,
        mode: crate::views::rewind::RewindMode,
    },
    RewindExecute {
        agent_id: AgentId,
        session_id: acp::SessionId,
        target_prompt_index: usize,
        mode: crate::views::rewind::RewindMode,
    },
    /// Fetch Kimi usage/quota rows from the agent's `kigi/billing`
    /// extension (`GET {base}/usages` shell-side) for the `/usage` view.
    FetchUsage { agent_id: AgentId },
    /// Spawn a debounce sleep task for shell suggestions. `agent_id` rides
    /// to the expiry so the fetch is built from the arming agent, not
    /// whatever view is active when the timer fires.
    DebounceSuggestions { agent_id: AgentId, generation: u64 },
    /// Send an ACP `kigi/suggest` request to the shell. `agent_id` is echoed
    /// on the result so the response routes to the agent that fetched, not
    /// whatever view is active when it lands.
    FetchShellSuggestions {
        agent_id: AgentId,
        text: String,
        cursor: usize,
        cwd: String,
        generation: u64,
        limit: usize,
        include_ai: bool,
        ai_model: Option<String>,
        session_id: Option<String>,
        /// Deterministic Tab fetches run only the shell's token providers
        /// (path/file); the as-you-type surface keeps all of them.
        token_only: bool,
    },
    /// Send an ACP `kigi/suggestPrompt` request to the shell — predict the
    /// user's likely next prompt after a completed turn (tab autocomplete
    /// ghost text).
    FetchPromptSuggestion {
        agent_id: AgentId,
        generation: u64,
        /// Suggestion model resolved by the pager (`kigi-0.1` when the
        /// catalog offers it); `None` = shell falls back to the session model.
        model: Option<String>,
        session_id: Option<String>,
    },
    /// Probe the clipboard for an attachment off the event-loop thread
    /// (osascript image/file-url read + image decode + session persist), then
    /// attach the chip via [`TaskResult::ClipboardAttachmentProbed`]. Keeps the
    /// paste handler from blocking the render thread on that I/O.
    ProbeClipboardAttachment {
        ctx: ClipboardPasteContext,
        /// Pasteboard `changeCount` at enqueue time; the off-thread probe bails
        /// (no image) if it no longer matches — a clipboard change or a second
        /// racing paste can't attach the wrong image.
        change_count: Option<u64>,
    },
    /// Prepare terminal preview bytes off the event-loop thread.
    PreparePromptImagePreview {
        preparation: crate::prompt_images::PromptImagePreviewPreparation,
    },
}
/// Outcome of an `kigi/subagent/cancel` request, telling dispatch whether the
/// pager must finalize the subagent row itself.
#[derive(Debug)]
pub enum SubagentKillOutcome {
    /// Shell stopped a live subagent — a real `SubagentFinished` is coming.
    StoppedLive,
    /// Nothing live to stop (orphan / already finished) — no finish coming, so
    /// the pager finalizes the row. `status` = the real terminal status for an
    /// already-finished orphan, else `None` (unknown id / older shell) →
    /// "cancelled".
    NothingLive { status: Option<String> },
    /// The cancel RPC failed; the subagent may still be running, so leave the
    /// row alone rather than show a false terminal state.
    RpcFailed,
}
/// Result from a completed async [`Effect`].
///
/// Wrapped in `Action::TaskComplete` and dispatched synchronously.
#[derive(Debug)]
#[allow(clippy::large_enum_variant)]
pub enum TaskResult {
    /// Session was created successfully.
    SessionCreated {
        agent_id: AgentId,
        session_id: acp::SessionId,
        models: Option<acp::SessionModelState>,
    },
    /// Session creation failed.
    SessionFailed {
        agent_id: AgentId,
        error: String,
    },
    /// Worktree session was created successfully (worktree + ACP session).
    WorktreeSessionCreated {
        agent_id: AgentId,
        session_id: acp::SessionId,
        /// Root of the created worktree (for display).
        worktree_path: std::path::PathBuf,
        /// Effective cwd inside the worktree (preserves subdirectory offset).
        session_cwd: std::path::PathBuf,
        models: Option<acp::SessionModelState>,
    },
    /// Worktree created and session forked, but not yet loaded.
    /// The dispatch handler sets session_id eagerly, then emits LoadSession.
    WorktreeForked {
        agent_id: AgentId,
        session_id: acp::SessionId,
        worktree_path: std::path::PathBuf,
        session_cwd: std::path::PathBuf,
        code_restored: bool,
        restore_summary: Option<String>,
        restore_degree: Option<kigi_workspace::session::git::RestoreDegree>,
    },
    /// Worktree session creation failed.
    WorktreeSessionFailed {
        agent_id: AgentId,
        error: String,
    },
    /// Session was loaded (resumed) successfully.
    SessionLoaded {
        agent_id: AgentId,
        session_id: acp::SessionId,
        models: Option<acp::SessionModelState>,
        code_restored: bool,
        restore_summary: Option<String>,
        restore_degree: Option<kigi_workspace::session::git::RestoreDegree>,
        /// The session's in-flight running prompt id (from the load response
        /// `_meta["kigi/runningPromptId"]`), present only when the session was
        /// loaded MID-turn (another client is driving). The loader adopts it to
        /// pass the live `session/update` gate without re-rendering the user
        /// block (replay already rendered it).
        running_prompt_id: Option<String>,
    },
    /// Session load (resume) failed.
    SessionLoadFailed {
        agent_id: AgentId,
        session_id: acp::SessionId,
        error: String,
    },
    /// Local `summary.json` title read for [`Effect::HydrateSessionTitleFromDisk`].
    SessionTitleFromDisk {
        agent_id: AgentId,
        /// The display title paired with whether it came from a manual
        /// `/rename` (`summary.title_is_manual`, restores the prompt-border
        /// title) — manual-ness cannot exist without a title.
        title: Option<(String, bool)>,
    },
    /// Session list fetched for the welcome screen picker.
    SessionListLoaded {
        sessions: Vec<crate::app::app_view::SessionPickerEntry>,
        /// Echo of [`Effect::FetchSessionList::seq`]; stale results are dropped.
        seq: u64,
        /// Echo of [`Effect::FetchSessionList::query`]. `Some` marks the
        /// sessions as server-side search results: stamped so the local fuzzy
        /// re-filter doesn't hide content-only hits, with zero hits a normal
        /// outcome rather than an empty-directory error.
        query: Option<String>,
    },
    /// A background foreign-session scan completed.
    ForeignSessionsScanned {
        entries: Vec<crate::app::app_view::SessionPickerEntry>,
        seq: u64,
    },
    /// Launch cwd canonicalization completed before foreign store access.
    ForeignResumeCwdCanonicalized {
        requested_cwd: std::path::PathBuf,
        canonical_cwd: Option<std::path::PathBuf>,
        launch_token: u64,
    },
    /// Launch-time foreign resume detection completed.
    ForeignResumeHintDetected {
        canonical_cwd: std::path::PathBuf,
        launch_token: u64,
        hint: Option<kigi_workspace::foreign_sessions::RecentForeignSession>,
    },
    /// Session list fetch failed.
    SessionListFailed {
        error: String,
        /// Echo of [`Effect::FetchSessionList::seq`]; stale failures are dropped.
        seq: u64,
        /// Echo of [`Effect::FetchSessionList::query`]. `Some` (a failed
        /// search) clears the search in-flight indicator; `None` must leave
        /// it alone — in Build mode the flag belongs to the FTS5 deep search.
        query: Option<String>,
    },
    /// Picker search debounce elapsed ([`Effect::DebounceSessionSearch`]).
    SessionSearchDebounceExpired {
        query: String,
        seq: u64,
    },
    /// Leader session roster loaded via `kigi/sessions/list`.
    RosterLoaded {
        sessions: Vec<crate::app::roster::RosterEntry>,
    },
    /// Leader session roster fetch failed (silent — no error modal).
    RosterFailed {
        error: String,
    },
    /// Local on-disk session list loaded for the dashboard (non-leader
    /// fallback). Entries are pre-converted to `RosterEntry` (activity
    /// `Dormant`) so they reuse the roster-row rendering path. A fetch
    /// failure yields an empty list (silent — the next poll retries).
    DashboardSessionsLoaded {
        sessions: Vec<crate::app::roster::RosterEntry>,
    },
    /// Card detail loaded for a session in the picker.
    CardDetailLoaded {
        source: String,
        session_id: String,
        generation: u64,
        detail: crate::app::app_view::CardDetail,
    },
    /// Remote session restored successfully — now load it. Always a Build
    /// disk row (see [`Effect::RestoreAndLoadSession`]).
    SessionRestored {
        agent_id: AgentId,
        /// The local session ID (may differ from remote ID).
        local_session_id: String,
    },
    /// Remote session restore failed.
    SessionRestoreFailed {
        agent_id: AgentId,
        error: String,
    },
    /// Incremental progress during remote session restore.
    SessionRestoreProgress {
        agent_id: AgentId,
        message: String,
    },
    /// Prompt response received (turn ended).
    PromptResponse {
        agent_id: AgentId,
        result: Result<acp::PromptResponse, String>,
        /// HTTP status code from the upstream API error, if available.
        /// Used by dispatch to show targeted UI (e.g. credit-limit
        /// upsell on 403).
        http_status: Option<u16>,
        /// The `prompt_id` the pager minted when it sent this `session/prompt`
        /// RPC. On `Ok` the agent echoes `promptId` back in PR meta, but an
        /// `acp::Error` carries no meta — so this is the ONLY way to attribute
        /// an *error* response to the prompt it belongs to. The dispatch gate
        /// uses it to discard errors from queued/stale prompts instead of
        /// painting them onto the running turn. `None` for synthetic/test
        /// constructions that don't need gating.
        prompt_id: Option<String>,
    },
    /// A send-now `session/prompt` RPC failed at the transport/RPC layer —
    /// the prompt never reached the shell's queue. Carries the payload so
    /// dispatch can requeue it locally (the producer already consumed the
    /// composer/queue row, so dropping it would silently lose the message —
    /// the same contract the removed `InterjectFailed` requeue had).
    SendPromptNowFailed {
        agent_id: AgentId,
        session_id: acp::SessionId,
        prompt_id: String,
        error: String,
        blocks: Vec<acp::ContentBlock>,
    },
    /// Cancel notification was sent (fire-and-forget).
    /// The real turn end comes via PromptResponse.
    CancelComplete,
    /// Response to `kigi/subagent/cancel`; see [`SubagentKillOutcome`].
    KillSubagentComplete {
        session_id: acp::SessionId,
        subagent_id: String,
        outcome: SubagentKillOutcome,
    },
    PreferredModelPersisted {
        result: Result<(), String>,
    },
    /// Manual `/compact` command completed.
    CompactComplete {
        agent_id: AgentId,
        result: Result<(), String>,
    },
    /// Background task kill result. `outcome` is `None` when the agent
    /// returned an error envelope or an unparseable payload (treated as
    /// "clear pending state, keep the row").
    BgTaskKilled {
        session_id: String,
        task_id: String,
        outcome: Option<kigi_tools::types::KillOutcome>,
    },
    /// Background task kill failed.
    BgTaskKillFailed {
        session_id: String,
        task_id: String,
        error: String,
    },
    /// Model switch completed (effort, if any, was applied in the same request).
    SwitchModelComplete {
        agent_id: AgentId,
        model_id: acp::ModelId,
        effort: Option<ReasoningEffort>,
        result: Result<(), SwitchModelError>,
        /// Forwarded from `Effect::SwitchModel.prev_model_id` for
        /// rollback on `IncompatibleAgent`.
        prev_model_id: Option<acp::ModelId>,
    },
    /// Cross-session prompt history loaded from ACP.
    PromptHistoryLoaded {
        agent_id: AgentId,
        prompts: Vec<String>,
    },
    /// Running agent name cached from `session/info` (for agents modal, etc.).
    SessionAgentNameResolved {
        agent_id: AgentId,
        agent_name: Option<String>,
    },
    /// Authentication completed successfully.
    AuthComplete {
        request_seq: u64,
        meta: Option<serde_json::Value>,
    },
    /// Authentication failed.
    AuthFailed {
        request_seq: u64,
        error: String,
    },
    /// Auth URL is ready (from the provider).
    AuthUrlReady {
        request_seq: u64,
        auth_url: Option<String>,
        /// Deprecated: superseded by `mode` (authoritative). Kept only as a
        /// back-compat fallback for older agents that don't send `mode`.
        external: bool,
        /// Presentation mode from `kigi/auth/get_url`; `None` on older agents.
        mode: Option<String>,
    },
    /// Auth code was submitted (fire-and-forget).
    AuthCodeSubmitted {
        request_seq: u64,
    },
    /// MCP server list fetched from shell.
    McpsListLoaded {
        agent_id: AgentId,
        result: Result<Vec<crate::views::mcps_modal::McpServerInfo>, String>,
    },
    /// MCP auth trigger completed.
    McpAuthTriggerDone {
        agent_id: AgentId,
        server_name: String,
        result: Result<(), String>,
    },
    /// Hooks list fetched from shell.
    HooksListLoaded {
        agent_id: AgentId,
        result: Result<kigi_hooks_plugins_types::HooksListResponse, String>,
    },
    /// Plugins list fetched from shell.
    PluginsListLoaded {
        agent_id: AgentId,
        result: Result<kigi_hooks_plugins_types::PluginsListResponse, String>,
    },
    /// Hooks action completed.
    HooksActionResult {
        agent_id: AgentId,
        result: Result<kigi_hooks_plugins_types::ActionOutcome, String>,
    },
    /// Plugins action completed.
    PluginsActionResult {
        agent_id: AgentId,
        result: Result<kigi_hooks_plugins_types::ActionOutcome, String>,
    },
    /// Skills list loaded.
    SkillsListLoaded {
        agent_id: AgentId,
        result: Result<Vec<kigi_tools::implementations::skills::types::SkillInfo>, String>,
    },
    /// Skill toggle completed (enable/disable).
    SkillsToggleDone {
        agent_id: AgentId,
        result: Result<Vec<kigi_tools::implementations::skills::types::SkillInfo>, String>,
    },
    /// Live MCP toggle completed.
    McpToggleDone {
        agent_id: AgentId,
        result: Result<(), String>,
    },
    /// Session info fetched successfully.
    SessionInfoComplete {
        agent_id: AgentId,
        info: Box<kigi_shell::session::SessionInfoResponse>,
        text: String,
    },
    /// Session info fetch failed.
    SessionInfoFailed {
        agent_id: AgentId,
        error: String,
    },
    /// Session rename completed successfully.
    RenameSessionComplete {
        agent_id: AgentId,
        title: String,
    },
    /// Session rename failed.
    RenameSessionFailed {
        agent_id: AgentId,
        error: String,
    },
    /// Session delete completed successfully.
    DeleteSessionComplete {
        source: String,
        session_id: String,
    },
    /// Session delete failed.
    DeleteSessionFailed {
        source: String,
        session_id: String,
        error: String,
    },
    /// Context info fetched successfully.
    ContextInfoComplete {
        agent_id: AgentId,
        info: Box<kigi_shell::session::SessionInfoResponse>,
    },
    /// Context info fetch failed.
    ContextInfoFailed {
        agent_id: AgentId,
        error: String,
    },
    /// Memory note saved to global MEMORY.md.
    MemoryNoteSaved {
        agent_id: AgentId,
        result: Result<(), String>,
    },
    /// LLM-rewritten memory note ready for inline review.
    /// `Ok(text)` = rewritten markdown; `Err(error)` = rewrite failed.
    MemoryNoteRewritten {
        agent_id: AgentId,
        result: Result<String, String>,
        /// Nonce from the originating RewriteMemoryNote effect; must match
        /// the modal's `rewrite_nonce` before populating enhanced_content.
        nonce: u64,
    },
    /// Bundle status fetched successfully.
    BundleStatusReady {
        has_cache: bool,
        version: Option<String>,
        personas: Vec<String>,
        roles: Vec<String>,
        agents: Vec<String>,
        skills: Vec<String>,
        persona_details: Vec<super::bundle::PersonaDetail>,
        role_details: Vec<super::bundle::RoleDetail>,
    },
    /// Bundle status fetch failed.
    BundleStatusFailed {
        error: String,
    },
    /// Catalog entry content fetched successfully.
    CatalogEntryReady {
        kind: String,
        name: String,
        content: String,
    },
    /// Catalog entry fetch failed.
    CatalogEntryFailed {
        error: String,
    },
    /// Side question (/btw) response received.
    BtwResponse {
        agent_id: AgentId,
        result: Result<String, String>,
    },
    /// `kigi/recap` request acknowledged (fire-and-forget). The recap itself
    /// arrives separately as a `SessionRecap` notification; this only carries
    /// a transport error, if any, for logging.
    RecapRequested {
        /// Session the recap was requested for — lets the handler find the
        /// agent whose manual loading spinner must be cleared on failure.
        session_id: acp::SessionId,
        /// Whether this was an automatic recap. Only a manual `/recap` shows a
        /// loading spinner, so only a manual failure needs to clear one.
        auto: bool,
        error: Option<String>,
    },
    /// Interjection queued acknowledgement.
    InterjectQueued {
        agent_id: AgentId,
    },
    /// Interjection send failed. Carries the payload so the dispatcher can
    /// requeue it (mirrors the batch path's `failed_local` requeue) — the
    /// queue row was already removed optimistically, so dropping the text
    /// here would silently lose the user's message.
    InterjectFailed {
        agent_id: AgentId,
        error: String,
        text: String,
        blocks: Option<Vec<agent_client_protocol::ContentBlock>>,
    },
    /// Available commands refreshed from the shell.
    AvailableCommandsRefreshed {
        agent_id: AgentId,
        commands: Vec<acp::AvailableCommand>,
    },
    /// Shell acknowledged logout (auth cleared).
    LogoutComplete,
    /// The 2-second "copied!" display timer expired.
    AuthCopiedTimeout,
    DeepSearchResults {
        results: Vec<kigi_shell::extensions::session_search::SearchSessionHit>,
        seq: u64,
    },
    /// `kigi/session/fork` completed (no-worktree path). The pager adopts
    /// the new session id and emits [`Effect::LoadSession`] to start the
    /// replay. Mirrors [`TaskResult::WorktreeForked`] in shape.
    ForkSessionReady {
        agent_id: AgentId,
        new_session_id: acp::SessionId,
        cwd: std::path::PathBuf,
    },
    /// `kigi/session/fork` failed. The placeholder agent stays in
    /// `app.agents` with no `session_id` so the user can switch away.
    ForkSessionFailed {
        agent_id: AgentId,
        error: String,
    },
    RewindPointsLoaded {
        agent_id: AgentId,
        points: Vec<crate::views::rewind::RewindPointInfo>,
    },
    RewindPointsFailed {
        agent_id: AgentId,
        error: String,
    },
    RewindPreviewComplete {
        agent_id: AgentId,
        response: crate::views::rewind::RewindResponse,
        target_prompt_index: usize,
        mode: crate::views::rewind::RewindMode,
    },
    RewindPreviewFailed {
        agent_id: AgentId,
        error: String,
    },
    RewindExecuteComplete {
        agent_id: AgentId,
        response: crate::views::rewind::RewindResponse,
    },
    RewindExecuteFailed {
        agent_id: AgentId,
        error: String,
    },
    /// Kimi usage/quota rows fetched for the `/usage` view.
    UsageFetched {
        agent_id: AgentId,
        result: Result<Vec<kigi_shell::extensions::billing::UsageRow>, String>,
    },
    /// Debounce timer for shell suggestions expired. Routed by the arming
    /// `agent_id`.
    SuggestionDebounceExpired {
        agent_id: AgentId,
        generation: u64,
    },
    /// Shell suggestions loaded from ACP `kigi/suggest`. `request_text` /
    /// `request_cursor` echo what the request was built from — the anchor
    /// the items' `replaceRange` offsets index into and the position Tab
    /// targets, paired atomically with them; `agent_id` routes the landing
    /// to the agent that fetched.
    ShellSuggestionsLoaded {
        agent_id: AgentId,
        response: crate::views::suggestion_controller::SuggestResponseParsed,
        request_text: String,
        request_cursor: usize,
    },
    /// Predicted next prompt loaded from ACP `kigi/suggestPrompt`.
    /// `suggestion` is `None` when the shell had nothing to suggest.
    PromptSuggestionLoaded {
        agent_id: AgentId,
        suggestion: Option<String>,
        generation: u64,
    },
    /// Setting persisted successfully. No reconciliation needed today.
    SettingPersisted {
        key: crate::settings::SettingKey,
        value: crate::settings::SettingValue,
    },
    /// Setting persist failed. Rolls back in-memory cache to
    /// `rollback_value` and shows a failure toast.
    SettingPersistFailed {
        key: crate::settings::SettingKey,
        rollback_value: crate::settings::SettingValue,
        error: String,
    },
    /// Best-effort persist failed (cycle_mode path). Logs + toasts but
    /// does NOT roll back in-memory state.
    SettingPersistFailedBestEffort {
        key: crate::settings::SettingKey,
        error: String,
    },
    /// Off-thread clipboard attachment probe finished (see
    /// [`Effect::ProbeClipboardAttachment`]); dispatch attaches the chip.
    ClipboardAttachmentProbed {
        ctx: ClipboardPasteContext,
        /// Decoded/persisted image outcome from the off-thread probe.
        image: ProbedAttachment,
        /// File URL(s) the completion resolves via the existing path handling.
        file_urls: Option<String>,
    },
    /// Shared prompt-image preview state was resolved off-thread.
    PromptImagePreviewPrepared,
}
#[cfg(test)]
mod tests {
    use super::*;
    /// `as_canonical` must return the wire strings that the settings
    /// picker and dispatcher pattern-match against.
    #[test]
    fn plan_mode_kind_as_canonical() {
        assert_eq!(PlanModeKind::On.as_canonical(), "on");
        assert_eq!(PlanModeKind::Off.as_canonical(), "off");
    }
    /// `as_display` must return user-visible picker labels.
    #[test]
    fn plan_mode_kind_as_display() {
        assert_eq!(PlanModeKind::On.as_display(), "On");
        assert_eq!(PlanModeKind::Off.as_display(), "Off");
    }
    /// `to_bool` must project `On → true`, `Off → false`.
    #[test]
    fn plan_mode_kind_to_bool() {
        assert!(PlanModeKind::On.to_bool());
        assert!(!PlanModeKind::Off.to_bool());
    }
    /// `from_bool` must be the inverse of `to_bool`.
    #[test]
    fn plan_mode_kind_from_bool_round_trip() {
        assert_eq!(PlanModeKind::from_bool(true), PlanModeKind::On);
        assert_eq!(PlanModeKind::from_bool(false), PlanModeKind::Off);
        for b in [true, false] {
            assert_eq!(
                PlanModeKind::from_bool(b).to_bool(),
                b,
                "from_bool ∘ to_bool round-trip must be identity",
            );
        }
        for k in [PlanModeKind::On, PlanModeKind::Off] {
            assert_eq!(
                PlanModeKind::from_bool(k.to_bool()),
                k,
                "to_bool ∘ from_bool round-trip must be identity",
            );
        }
    }
    /// Drift-guard: `PLAN_MODE_CHOICES` canonicals must match
    /// `PlanModeKind::as_canonical`.
    #[test]
    fn plan_mode_kind_canonical_strings_match_choices_catalog() {
        let catalog_canonicals: std::collections::HashSet<&str> =
            crate::settings::defs::default_settings()
                .iter()
                .find(|m| m.key == "plan_mode")
                .map(|m| match &m.kind {
                    crate::settings::SettingKind::Enum { choices, .. } => {
                        choices.iter().map(|c| c.canonical).collect()
                    }
                    _ => panic!("plan_mode must be Enum"),
                })
                .expect("plan_mode must be registered");
        assert!(
            catalog_canonicals.contains(PlanModeKind::On.as_canonical()),
            "catalog must contain `{}` (from PlanModeKind::On)",
            PlanModeKind::On.as_canonical(),
        );
        assert!(
            catalog_canonicals.contains(PlanModeKind::Off.as_canonical()),
            "catalog must contain `{}` (from PlanModeKind::Off)",
            PlanModeKind::Off.as_canonical(),
        );
        assert_eq!(
            catalog_canonicals.len(),
            2,
            "catalog must be exactly {{on, off}} — adding a third \
             choice requires adding a PlanModeKind variant AND \
             updating the action_for_enum_commit + action_for_reset \
             dispatcher arms",
        );
    }
}