export declare const OPUS_MODEL = "claude-opus-5[1m]";
export declare const SONNET_MODEL = "claude-sonnet-5";
export declare const HAIKU_MODEL = "claude-haiku-4-5";
export declare const MODEL_CONTEXT_WINDOW: Record<string, number>;
/** Look up context window size; defaults to 200k for unknown models. */
export declare function contextWindow(model: string): number;
/** Friendly labels for the canonical model ids, for the /chat composer's
 *  native-CC model dropdown (Task 820). A lever id outside this map renders
 *  with its raw id as the label (the composer's append-fallback). */
export declare const MODEL_DISPLAY_NAMES: Record<string, string>;
/** The dropdown label for a model id: friendly name when canonical, else the
 *  raw id (never misrepresents an off-map persisted lever). */
export declare function modelDisplayName(id: string): string;
/** The exact selectable model ids (no aliases). Server-side re-seat validation
 *  (Task 876) uses this so a body-supplied model can never reach the spawn argv
 *  unchecked — a removed model (e.g. claude-fable-5) or a bare alias ('opus')
 *  is rejected before the fork. */
export declare const SELECTABLE_MODELS: readonly string[];
export declare function isSelectableModel(id: string): boolean;
/** Strip Claude Code's `[1m]` context-extension suffix so a selectable id
 *  (`claude-opus-5[1m]`) compares equal to the live API/JSONL `message.model`
 *  (suffix stripped upstream → `claude-opus-5`). Ids without the suffix pass
 *  through. The /chat picker uses this to decide whether a chosen model is a
 *  real change from the running one — a raw `selected !== live` compare is
 *  always true for `[1m]` models. */
export declare function baseModelId(id: string): string;
/** Map a model id (often the bare live id without `[1m]`) to its canonical
 *  *selectable* id by base-id match; returns the input unchanged when no
 *  selectable id shares its base. Lets the composer read-only row and the
 *  context-window lookup resolve a live `claude-opus-5` back to
 *  `claude-opus-5[1m]` (display name + 1M window). */
export declare function canonicalModelId(id: string): string;
/** The 5 permission modes the /chat composer and re-seat fork may write. */
export declare const PERMISSION_MODES: readonly ["default", "acceptEdits", "plan", "auto", "bypassPermissions"];
export type PermissionMode = (typeof PERMISSION_MODES)[number];
export declare function isPermissionMode(value: string): value is PermissionMode;
/** The 4 settings.json effort levels, low→highest. */
export declare const EFFORT_LEVELS: readonly ["low", "medium", "high", "xhigh"];
export type EffortLevel = (typeof EFFORT_LEVELS)[number];
export declare function isEffortLevel(value: string): value is EffortLevel;
/** The 6 spawn-time permission modes: the 5 composer-writable modes plus the
 *  fail-closed `dontAsk`. The pty-spawner re-exports this under its own names. */
export declare const SPAWN_PERMISSION_MODES: readonly ["default", "acceptEdits", "plan", "auto", "bypassPermissions", "dontAsk"];
export type SpawnPermissionMode = (typeof SPAWN_PERMISSION_MODES)[number];
/** The full effort set persisted in account.json: the 4 settings.json levels
 *  plus the session-only `auto`/`max` excluded from that subset. */
export declare const SESSION_EFFORT_LEVELS: readonly ["auto", "low", "medium", "high", "xhigh", "max"];
export type SessionEffortLevel = (typeof SESSION_EFFORT_LEVELS)[number];
/** The 5 effort levels the /chat new-session picker may write: the 4 settings.json
 *  levels plus the session-only `max`. Distinct from EFFORT_LEVELS (the fork/daemon
 *  settings.json subset — `max` is invalid as a settings.json `effortLevel`) and
 *  from SESSION_EFFORT_LEVELS (which also carries `auto`, never offered by the
 *  picker). A `max` pick reaches the CLI via the `--effort max` argv flag, not the
 *  inline `effortLevel` settings key. */
export declare const NEW_SESSION_EFFORT_LEVELS: readonly ["low", "medium", "high", "xhigh", "max"];
export type NewSessionEffortLevel = (typeof NEW_SESSION_EFFORT_LEVELS)[number];
export declare function isNewSessionEffortLevel(value: string): value is NewSessionEffortLevel;
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