/**
 * runPlanSkillFloorCheck. Moved from claude-pty-runner.ts.
 * Import through test/helpers/claude-pty-runner.ts from tests; pty/ modules import siblings directly.
 */
import * as fs from 'node:fs';
import * as path from 'node:path';
import { resolveEvalModel } from '../../../../lib/eval-model';
import { createPlanCountFixture } from '../../plan-count-fixture';
import { createPlanCountSnapshotWriter } from '../../plan-count-artifacts';
import { readPlanFloorTarget, type PlanFloorTargetDelivery } from '../../plan-floor-target';
import { judgePlanFloorReview, pickPlanFloorMode, pickPlanFloorProductType, type PlanFloorReview, type PlanFloorAssessment } from '../../plan-floor-review';
import { readPlanCountTranscript, type NativePlanQuestionCall, type PlanCountTranscript, type NativePublicToolEvent } from '../../plan-count-transcript';
import { readPendingQuestion, pendingQuestionRecorderStatus } from '../../plan-count-pending-question';
import { currentFilePermissionBinding, readPendingWriteInput, isCroppedEditPermissionVisible } from '../../plan-count-file-permission';
import { isDeepStrictEqual } from 'node:util';
import { randomUUID } from 'node:crypto';
import { capturePlanCountQuestion, createPlanCountPermissionGuard, matchesNativePlanQuestion, planCountPrerequisitePick, planCountQuestionInput } from '../auq';
import { resolveClaudeBinary } from '../binary';
import { pickDesignFocusAll } from '../boundaries';
import { SANCTIONED_WRITE_SUBSTRINGS, isProseAUQVisible, planCountSubmissionInput } from '../classify';
import type { ClaudePtySession } from '../launch';
import { isNumberedOptionListVisible, isPermissionDialogVisible, isPlanReadyVisible, isRejectedSlashCommand, stripPtyResidue } from '../screen';
import { realPtyDriver, runPtySession, type PtyDriver, type PtyStep } from '../session';

// ────────────────────────────────────────────────────────────────────────────
// runPlanSkillFloorCheck — stop at the first substantive seeded question.
// Current owned input → complete question → evidence-backed assessment → outcome.
// Setup answers advance only the predeclared review interface. Findings are
// observed without answering them; permissions and generic waiting never count.
// The existing model-work deadline also bounds the replacement waiting judge.
// ────────────────────────────────────────────────────────────────────────────

export interface PlanSkillFloorObservation {
  /** True iff a review-phase AUQ render was observed. */
  auqObserved: boolean;
  /** Owned native acknowledgment of the exact seeded target command. */
  targetDelivery?: PlanFloorTargetDelivery;
  outcome:
    | 'auq_observed'
    | 'plan_ready'
    | 'silent_write'
    | 'exited'
    | 'timeout'
    | 'assessment_error';
  summary: string;
  /** Public current viewport for an accepted finding; terminal tail otherwise. */
  evidence: string;
  /** Wall time (ms) until the outcome was decided. */
  elapsedMs: number;
}

/**
 * Drive a plan-* skill and qualify its first current seeded finding question.
 * The actor answers only its declared optional-prerequisite, mode and product-type choices.
 */
/** DX's long empathy prompt needs its whole native pane, not an interior crop.
 * Retain the actual header and complete pinned renderer prefix; the shared
 * matcher still authenticates the pending question and native menu. */
export function planFloorDXPane(visible: string, call: NativePlanQuestionCall): string | null {
  if (call.answered || call.failed || call.questions.length !== 1) return null;
  const text = stripPtyResidue(visible).replace(/\r+\n?/g, '\n')
    .replace(/((?:^|\n)Enter\s+to\s+select\s*·\s*↑\/↓\s+to\s+navigate\s*·\s*)ctrl\+g\s+to\s+edit\s+in[ \t]+[^\s·\x00-\x1f\x7f][^·\x00-\x1f\x7f]*?\s*·\s*(Esc\s+to\s+cancel\s*)$/, '$1$2');
  const headers = [...text.matchAll(/(?:^|\n)[\t ]*[☐□][^\n]*\n/g)];
  const header = headers.at(-1);
  if (!header) return null;
  const preceding = text.slice(0, header.index).trimEnd();
  if (preceding && !/(?:^|\n)[ \t]*[─━]{10,}[ \t]*$/.test(preceding)) return null;
  let fence: string | undefined;
  for (const line of preceding.split('\n')) {
    const marker = /^ {0,3}(`{3,}|~{3,})(.*)$/.exec(line);
    if (!marker) continue;
    if (!fence) fence = marker[1];
    else if (marker[1]![0] === fence[0] && marker[1]!.length >= fence.length && !marker[2]!.trim()) fence = undefined;
  }
  if (fence) return null;
  const pane = text.slice(header.index).trimStart();
  const cursor = /(?:^|\n)❯\s*1\./.exec(pane);
  if (!cursor) return null;
  const body = pane.slice(pane.indexOf('\n') + 1, cursor.index)
    .replace(/^[ \t]*[│┃] ?|[│┃][ \t]*$/gm, '').trim();
  const compact = (value: string) => value.replace(/\s+/g, '');
  const q = call.questions[0]!;
  const displayed = q.question.length > 2000 ? q.question.slice(0, 2000) + '…' : q.question;
  if (compact(body) !== compact(displayed) || !matchesNativePlanQuestion(pane, call)) return null;
  return pane;
}

export interface PlanFloorDXReply {
  call: NativePlanQuestionCall;
  pane: string;
  reply: string;
  stage: 'focus' | 'paste' | 'submit' | 'done';
}

/** The native custom field focuses first, then accepts literal bracketed paste.
 * Each step binds the same unanswered call and unchanged complete pane. */
export function planFloorDXReplyInput(visible: string, call: NativePlanQuestionCall,
  state: PlanFloorDXReply): { input: string; stage: PlanFloorDXReply['stage'] } | null {
  if (state.stage === 'done' || call.answered || call.failed || call.questions.length !== 1 ||
      call.questions[0]!.multiSelect || call.sessionId !== state.call.sessionId || call.toolUseId !== state.call.toolUseId ||
      !isDeepStrictEqual(call.questions, state.call.questions) || !state.reply.trim() || state.reply.length > 1400 ||
      /[\x00-\x1f\x7f]/.test(state.reply)) return null;
  const compact = (value: string) => value.replace(/\s+/g, '');
  const index = call.questions[0]!.options.length + 1;
  if (state.stage === 'focus') {
    const pane = planFloorDXPane(visible, call);
    if (!pane || compact(pane) !== compact(state.pane) ||
        !new RegExp(`(?:^|\\n)  ${index}\\. Type something\\.[ \\t]*(?:\\n|$)`).test(pane)) return null;
    return { input: String(index), stage: 'paste' };
  }
  const lines = stripPtyResidue(visible).replace(/\r+\n?/g, '\n').split('\n');
  const start = lines.findIndex(line => new RegExp(`^❯ ${index}\\. `).test(line));
  if (start < 0 || lines.filter(line => /^❯ [1-9]\. /.test(line)).length !== 1) return null;
  let end = start + 1;
  while (end < lines.length && /^ {5}\S|^ {5,}\S/.test(lines[end]!)) end++;
  const field = [lines[start]!.replace(new RegExp(`^❯ ${index}\\. `), ''),
    ...lines.slice(start + 1, end).map(line => line.trim())].join(' ').trim();
  if (field !== (state.stage === 'paste' ? 'Type something.' : state.reply)) return null;
  lines.splice(start, end - start, `  ${index}. Type something.`);
  const first = lines.findIndex(line => /^  1\. /.test(line));
  if (first < 0) return null;
  lines[first] = lines[first]!.replace(/^  1\./, '❯ 1.');
  const pane = planFloorDXPane(lines.map(line => line.replace(
    /^(Enter to select · ↑\/↓ to navigate · (?:n to add notes · )?)ctrl\+g to edit in [^\x00-\x1f\x7f·]+ · (Esc to cancel)$/,
    '$1$2')).join('\n'), call);
  if (!pane || compact(pane) !== compact(state.pane)) return null;
  return state.stage === 'paste'
    ? { input: '\x1b[200~' + state.reply + '\x1b[201~', stage: 'submit' }
    : { input: '\r', stage: 'done' };
}

/** Options for runPlanSkillFloorCheck. */
export interface PlanSkillFloorOptions {
  /** Skill name, e.g. 'plan-eng-review'. Used for diagnostic strings only. */
  skillName: string;
  /** Slash command; the owned PLAN.md target is supplied in the same submission. */
  slashCommand: string;
  /** Complete request seeded in an isolated project before the command starts. */
  followUpPrompt: string;
  /** Explicit working-plan request relocated into the owned fixture before launch. */
  requestedPlanPath?: string;
  /** Predeclared DX fixture classification; never inferred from a recommendation. */
  productType?: 'sdk-documentation';
  /** Literal persona/journey correction declared before DX setup; approves no offered remedy. */
  devexSetupContext?: string;
  /** Installation cwd retained for caller compatibility; review uses an owned seeded project. */
  cwd?: string;
  /** Total budget. Default 600000 (10 min). Tests exit early on AUQ. */
  timeoutMs?: number;
  /** Extra env merged into the spawned `claude` process. */
  env?: Record<string, string>;
  /** Override the spawned model. Defaults via launchClaudePty's chain. */
  model?: string;
  /** Launch seam and clock; tests pass the fake driver. Default: real launcher and clocks. */
  driver?: PtyDriver;
}

export async function runPlanSkillFloorCheck(opts: PlanSkillFloorOptions): Promise<PlanSkillFloorObservation> {
  const driver = opts.driver ?? realPtyDriver;
  const startedAt = driver.now();
  const timeoutMs = opts.timeoutMs ?? 600_000;
  const dxContext = opts.devexSetupContext;
  if (dxContext !== undefined && (opts.skillName !== 'plan-devex-review' || opts.productType !== 'sdk-documentation' ||
      !dxContext.trim() || dxContext.length > 1400 || /[\x00-\x1f\x7f]/.test(dxContext)))
    throw Error('DX setup context requires the declared SDK-documentation actor and a bounded literal single line');

  const request = [
    'Proceed directly to the requested review; skip the optional /office-hours prerequisite.',
    'This actor has already declined routing setup, cross-project recall and outside reviewers.',
    'Preserve the supplied product scope. For review-mode questions choose HOLD SCOPE (CEO), DX POLISH (DX), or the full BIG CHANGE review (Eng). Design: review all seven dimensions.',
    // Runs 36626737820 and 36776104571: CEO read scope preservation as approving
    // approach A, so the seeded premise gap never reached a question. Run 36794871032:
    // CEO read this request as supplying every answer up front and asked nothing.
    ...(opts.skillName === 'plan-ceo-review' ? ['Preserving scope does not approve the plan\'s premise, approach or any remedy. This request answers only the routing, recall, outside-reviewer and review-mode questions named above.'] : []),
    ...(opts.productType === 'sdk-documentation' ? [
      'Product type is confirmed: SDK quickstart documentation, with the complete journey to the first SDK call as context. If asked to classify, choose SDK + Docs when offered, otherwise Documentation. This confirms the review lens; it does not expand the plan.',
      'Target persona is confirmed: a hands-on developer integrating this SDK for the first time, trying to make one successful call. Product type and persona setup are already answered; proceed to reviewing the supplied plan.',
    ] : []),
    ...(dxContext ? ['For setup confirmations, this actor can supply only the following persona/journey correction through the native custom answer. It does not approve a proposed narrative, remedy, or scope change: ' + dxContext] : []),
    opts.followUpPrompt,
  ].join('\n\n');
  const fixture = createPlanCountFixture(request, { requestedPlanPath: opts.requestedPlanPath,
    nativeReviewOnly: true, preconfiguredReviewActor: true });
  const sessionId = randomUUID();
  const run = { opts, driver, startedAt, timeoutMs, dxContext, fixture, sessionId,
    ownedFilePermissions: [], planningDirectory: undefined, transcript: { status: 'missing', calls: [], assistantMessages: [] },
    viewport: '', publicTools: [], pendingQuestion: undefined, floorReview: undefined, floorAssessment: undefined,
    setupChoices: new Map(), submittedSetup: new Set(), assessed: new Map(), dxReplies: new Map(),
    since: 0, commandStartedAt: 0, targetDelivery: undefined, saveSnapshot: undefined, nativeCandidates: [],
    validatedPendingQuestion: undefined, sampledAt: undefined, lastCheckpointAt: 0, lastCheckpointState: '',
    artifactError: undefined, finished: false, started: false, start: 0, deadlineAt: 0, screenDeadlineAt: 0,
  } as unknown as FloorRun;
  return runPtySession<PlanSkillFloorObservation>({
    driver,
    cleanup: () => fixture.cleanup(),
    launch: {
      permissionMode: 'plan',
      cwd: fixture.cwd,
      timeoutMs: timeoutMs + 60_000,
      env: { ...opts.env, ...fixture.env },
      model: opts.model,
      seedSkills: true,
      observeScreen: true,
      observeSetupQuestions: true,
      ...(dxContext ? { rows: 80 } : {}),
      observeFilePermissions: fixture.workingPlanPath ? [fixture.workingPlanPath] : undefined,
      extraArgs: ['--session-id', sessionId],
    },
    start: session => floorStart(run, session),
    poll: async () => {
      if (!(driver.now() - run.start < timeoutMs)) return false;
      await driver.sleep(2000);
      return true;
    },
    tick: session => floorTick(run, session),
    timeout: session => floorFinish(run, session, {
      auqObserved: false,
      outcome: 'timeout',
      summary: run.targetDelivery.status === 'ready'
        ? `no qualifying finding question within ${timeoutMs}ms`
        : `seeded target delivery unavailable within ${timeoutMs}ms: ${run.targetDelivery.reason ?? run.targetDelivery.status}`,
      evidence: session.visibleSince(run.since).slice(-3000),
      elapsedMs: driver.now() - startedAt,
    }),
    beforeClose: (session, failure) => floorBeforeClose(run, session, failure),
  });
}

/** Mutable state of one floor attempt, shared by its session-loop steps. */
interface FloorRun {
  opts: PlanSkillFloorOptions;
  driver: PtyDriver;
  startedAt: number;
  timeoutMs: number;
  dxContext: string | undefined;
  fixture: ReturnType<typeof createPlanCountFixture>;
  sessionId: string;
  ownedFilePermissions: Array<{ expected: string; file: string; guard: ReturnType<typeof createPlanCountPermissionGuard> }>;
  planningDirectory: string | undefined;
  transcript: PlanCountTranscript;
  viewport: string;
  publicTools: NativePublicToolEvent[];
  pendingQuestion: NativePlanQuestionCall | undefined;
  floorReview: PlanFloorReview | undefined;
  floorAssessment: PlanFloorAssessment | undefined;
  setupChoices: Map<string, Set<number>>;
  submittedSetup: Set<string>;
  assessed: Map<string, PlanFloorAssessment>;
  dxReplies: Map<string, PlanFloorDXReply>;
  since: number;
  commandStartedAt: number;
  deliveryOptions: { seed: string; sessionId: string; slashCommand: string; startedAt: number };
  targetDelivery: PlanFloorTargetDelivery;
  saveSnapshot: ReturnType<typeof createPlanCountSnapshotWriter>;
  nativeCandidates: NativePlanQuestionCall[];
  validatedPendingQuestion: ReturnType<typeof readPendingQuestion>;
  sampledAt: number | undefined;
  lastCheckpointAt: number;
  lastCheckpointState: string;
  artifactError: string | undefined;
  finished: boolean;
  /** Command sent and capture state ready; before-close capture applies from here. */
  started: boolean;
  /** Loop start after the command; the finding clock and assessment deadline. */
  start: number;
  deadlineAt: number;
  screenDeadlineAt: number;
}

async function floorStart(run: FloorRun, session: ClaudePtySession): Promise<undefined> {
  const { opts, driver, fixture } = run;
  run.ownedFilePermissions = (session.pendingFilePermissionFiles ?? []).map(binding =>
    ({ ...binding, guard: createPlanCountPermissionGuard() }));
  run.planningDirectory = session.hermeticConfigDir ? path.join(session.hermeticConfigDir, 'plans') : undefined;
  await driver.sleep(8000); // boot grace + auto-trust handler window
  run.since = session.mark();
  run.commandStartedAt = driver.now();
  session.send(`${opts.slashCommand} PLAN.md\r`);
  run.deliveryOptions = { seed: fixture.seed, sessionId: run.sessionId,
    slashCommand: opts.slashCommand, startedAt: run.commandStartedAt };
  run.targetDelivery = readPlanFloorTarget(session.hermeticConfigDir, fixture.cwd,
    { ...run.deliveryOptions, now: driver.now() });
  run.saveSnapshot = createPlanCountSnapshotWriter();
  run.started = true;
  run.start = driver.now();
  run.deadlineAt = run.start + run.timeoutMs;
  run.screenDeadlineAt = driver.monotonic() + run.timeoutMs;
  return undefined;
}

function floorCapture(run: FloorRun, session: ClaudePtySession, observation: object) {
  const { fixture } = run;
  const recorderStatus = pendingQuestionRecorderStatus(session.pendingQuestionFile, fixture.cwd, session.hermeticConfigDir);
  const artifacts = run.saveSnapshot({ skillName: run.opts.skillName, cwd: fixture.cwd,
    claudeConfigDir: session.hermeticConfigDir, raw: session.rawOutput(),
    visible: session.visibleSince(run.since), viewport: run.viewport,
    observation: { ...observation, transcript: run.transcript, publicTools: run.publicTools, pendingQuestion: run.pendingQuestion,
      floorReview: run.floorReview, floorAssessment: run.floorAssessment, targetDelivery: run.targetDelivery, commandStartedAt: run.commandStartedAt,
      pendingWriteInputs: run.ownedFilePermissions.flatMap(binding => {
        const input = readPendingWriteInput(binding.file, binding.expected, fixture.cwd, session.hermeticConfigDir, run.startedAt);
        return input ? [input] : [];
      }),
      questionDiagnostics: { sampledAt: run.sampledAt, parentSessionId: run.sessionId, recorderStatus, recorderStatusAt: run.driver.now(),
        nativeCandidates: run.nativeCandidates, validatedPendingQuestion: run.validatedPendingQuestion },
      ...(run.dxContext ? { setupContextReplies: [...run.dxReplies.values()] } : {}), artifactError: run.artifactError } });
  if (artifacts.artifactError) {
    run.artifactError ??= artifacts.artifactError;
    console.error(`PTY artifact write failed: ${artifacts.artifactError}`);
  }
  return { ...artifacts, ...(run.artifactError ? { artifactError: run.artifactError } : {}) };
}

function floorCheckpoint(run: FloorRun, session: ClaudePtySession): void {
  const state = JSON.stringify([pendingQuestionRecorderStatus(session.pendingQuestionFile, run.fixture.cwd, session.hermeticConfigDir),
    run.targetDelivery.status, run.nativeCandidates, run.validatedPendingQuestion, run.pendingQuestion, [...run.dxReplies.values()]]);
  if (state === run.lastCheckpointState && run.driver.now() - run.lastCheckpointAt < 15_000) return;
  run.lastCheckpointState = state; run.lastCheckpointAt = run.driver.now();
  floorCapture(run, session, { state: 'in_progress', elapsedMs: run.driver.now() - run.startedAt });
}

function floorBeforeClose(run: FloorRun, session: ClaudePtySession, failure: { error: unknown } | undefined): void {
  if (!run.started) return;
  if (failure && session.hermeticConfigDir) {
    const publicTools: NativePublicToolEvent[] = [];
    run.publicTools = publicTools;
    run.transcript = readPlanCountTranscript(session.hermeticConfigDir, run.fixture.cwd, event => publicTools.push(event));
  }
  if (!run.finished) floorCapture(run, session, { state: failure ? 'threw' : 'in_progress', error: failure ? String(failure.error) : undefined,
    captureReason: 'before_cleanup', elapsedMs: run.driver.now() - run.startedAt });
}

function floorFinish(run: FloorRun, session: ClaudePtySession, observation: PlanSkillFloorObservation): PlanSkillFloorObservation {
  const artifacts = floorCapture(run, session, observation);
  run.finished = true;
  return { ...observation, targetDelivery: run.targetDelivery, ...artifacts };
}

async function floorTick(run: FloorRun, session: ClaudePtySession): Promise<PtyStep<PlanSkillFloorObservation>> {
  const { opts, driver, fixture, sessionId } = run;
  const visible = session.visibleSince(run.since);
  const finish = (observation: PlanSkillFloorObservation) => ({ done: floorFinish(run, session, observation) });
  if (session.exited()) return finish({ auqObserved: false, outcome: 'exited',
    summary: `claude exited (code=${session.exitCode()}) before a qualifying finding`,
    evidence: visible.slice(-3000), elapsedMs: driver.now() - run.startedAt });
  if (isRejectedSlashCommand(visible, opts.slashCommand)) return finish({ auqObserved: false, outcome: 'exited',
    summary: `claude rejected ${opts.slashCommand} as unknown command`,
    evidence: visible.slice(-3000), elapsedMs: driver.now() - run.startedAt });

  if (run.targetDelivery.status !== 'ready') {
    run.targetDelivery = readPlanFloorTarget(session.hermeticConfigDir, fixture.cwd,
      { ...run.deliveryOptions, now: driver.now() });
    if (run.targetDelivery.status !== 'ready') {
      run.viewport = await session.currentScreen(run.screenDeadlineAt);
      floorCheckpoint(run, session);
      return 'continue';
    }
  }

  // Current native identity precedes permission handling and finding assessment.
  run.floorReview = undefined; run.floorAssessment = undefined;
  run.viewport = await session.currentScreen(run.screenDeadlineAt);
  const publicTools: NativePublicToolEvent[] = [];
  run.publicTools = publicTools;
  run.transcript = session.hermeticConfigDir
    ? readPlanCountTranscript(session.hermeticConfigDir, fixture.cwd, event => publicTools.push(event))
    : { status: 'missing', calls: [], assistantMessages: [] };
  const hook = readPendingQuestion(session.pendingQuestionFile, fixture.cwd,
    session.hermeticConfigDir, run.commandStartedAt, run.transcript);
  const currentCalls = run.transcript.status === 'ready' ? run.transcript.calls.filter(call =>
    call.sessionId === sessionId && !call.answered && !call.failed && publicTools.filter(event =>
      event.sessionId === sessionId && event.kind === 'use' && event.name === 'AskUserQuestion' &&
      event.toolUseId === call.toolUseId && Date.parse(event.timestamp) >= run.commandStartedAt &&
      Date.parse(event.timestamp) <= driver.now() && isDeepStrictEqual(event.input?.questions, call.questions)).length === 1) : [];
  run.nativeCandidates = currentCalls.slice();
  run.validatedPendingQuestion = hook;
  run.sampledAt = driver.now();
  if (hook?.sessionId === sessionId && !run.transcript.calls.some(call => call.toolUseId === hook.toolUseId)) currentCalls.push(hook);
  const activeReply = currentCalls.length === 1 && run.dxReplies.get(`${currentCalls[0]!.sessionId}:${currentCalls[0]!.toolUseId}`);
  if (activeReply) {
    run.pendingQuestion = undefined;
    const next = planFloorDXReplyInput(run.viewport, currentCalls[0]!, activeReply);
    if (next) { session.send(next.input); activeReply.stage = next.stage; }
    floorCheckpoint(run, session);
    return 'continue';
  }
  const matching = currentCalls.filter(call => run.dxContext
    ? planFloorDXPane(run.viewport, call) !== null : matchesNativePlanQuestion(run.viewport, call, run.planningDirectory));
  run.pendingQuestion = matching.length === 1 ? matching[0] : undefined;
  floorCheckpoint(run, session);
  if (floorPermission(run, session)) return 'continue';
  const question = floorQuestion(run, session, currentCalls);
  if (question) return question;
  return floorAssess(run, session, visible);
}

/** An authorized owned file write enables the review, but never supplies its
 * finding question. True when an active permission render owns this tick. */
function floorPermission(run: FloorRun, session: ClaudePtySession): boolean {
  const { fixture, viewport } = run;
  const permissionIsActiveRender = !run.pendingQuestion &&
    (isPermissionDialogVisible(viewport) || isCroppedEditPermissionVisible(viewport));
  if (!permissionIsActiveRender) return false;
  // Exclude the permission's old render after approval.
  const owned = currentFilePermissionBinding(run.ownedFilePermissions, fixture.cwd,
    session.hermeticConfigDir, run.startedAt, run.transcript, viewport);
  let ordinaryOwnedTarget = false;
  if (fixture.workingPlanPath) try {
    const parent = fs.realpathSync(path.dirname(fixture.workingPlanPath));
    let target: fs.Stats | undefined;
    try { target = fs.lstatSync(fixture.workingPlanPath); }
    catch (error) { if ((error as NodeJS.ErrnoException).code !== 'ENOENT') throw error; }
    ordinaryOwnedTarget = parent === fs.realpathSync(fixture.cwd) && (!target || target.isFile());
  } catch { /* No authority for a linked, foreign, or unreadable target. */ }
  if (owned && ordinaryOwnedTarget && owned.binding.guard(viewport, session.visibleText(), owned.epoch) === 'grant')
    session.send('1\r');
  return true;
}

/** Answer declared setup choices; otherwise stage the current question (native
 * or complete prose) as the floor review candidate. A step ends this tick. */
function floorQuestion(run: FloorRun, session: ClaudePtySession, currentCalls: NativePlanQuestionCall[]): PtyStep<PlanSkillFloorObservation> | undefined {
  const { opts, fixture, viewport, pendingQuestion } = run;
  const questionViewport = run.dxContext && pendingQuestion ? planFloorDXPane(viewport, pendingQuestion)! : viewport;
  const fp = pendingQuestion && capturePlanCountQuestion(questionViewport, new Set(), run.driver.now() - run.start, true, pendingQuestion, run.planningDirectory);
  if (fp && pendingQuestion) {
    const index = fp.nativeQuestionIndex ?? 0;
    const question = pendingQuestion.questions[index]!;
    const key = `${pendingQuestion.sessionId}:${pendingQuestion.toolUseId}`;
    const chosen = run.setupChoices.get(key) ?? new Set<number>();
    const pick = pickPlanFloorMode(opts.skillName, question) ?? planCountPrerequisitePick(fp, fp)
      ?? (opts.skillName === 'plan-devex-review' ? pickPlanFloorProductType(question, opts.productType) : null)
      ?? (opts.skillName === 'plan-design-review' ? pickDesignFocusAll(question) : null);
    if (pick !== null) {
      if (!chosen.has(index)) {
        session.send(planCountQuestionInput(viewport, fp, pick));
        chosen.add(index); run.setupChoices.set(key, chosen);
      }
      return 'continue';
    }
    run.floorReview = { seed: fixture.seed, candidate: { transport: 'native', identity: `${key}:question:${index}`,
      question: structuredClone(question) } };
    return undefined;
  }
  // Public fallback must be a complete current question, not scrollback,
  // a generic idle prompt, permission, tool result or quoted example.
  run.floorReview = undefined;
  const message = run.transcript.assistantMessages.filter(m => m.sessionId === run.sessionId &&
    Date.parse(m.timestamp) >= run.commandStartedAt && Date.parse(m.timestamp) <= run.driver.now()).at(-1);
  const compact = (text: string) => text.replace(/\s+/g, '');
  if (!currentCalls.length && message && isProseAUQVisible(viewport) && isProseAUQVisible(message.text) &&
      !/^\s*(?:>|`{3,}|~{3,})/m.test(message.text) && compact(viewport).includes(compact(message.text)))
    run.floorReview = { seed: fixture.seed, candidate: { transport: 'prose',
      identity: `${message.sessionId}:${message.timestamp}`, text: message.text } };
  const submit = planCountSubmissionInput(viewport);
  const packet = currentCalls.find(call => run.setupChoices.get(`${call.sessionId}:${call.toolUseId}`)?.size === call.questions.length);
  if (submit && packet) {
    const key = `${packet.sessionId}:${packet.toolUseId}`;
    if (!run.submittedSetup.has(key)) { session.send(submit); run.submittedSetup.add(key); }
    return 'continue';
  }
  return undefined;
}

/** Assess a staged candidate once; then the silent-write and plan-ready terminals. */
function floorAssess(run: FloorRun, session: ClaudePtySession, visible: string): PtyStep<PlanSkillFloorObservation> {
  const { driver, floorReview, pendingQuestion } = run;
  const finish = (observation: PlanSkillFloorObservation) => ({ done: floorFinish(run, session, observation) });
  if (floorReview) {
    const key = JSON.stringify(floorReview);
    run.floorAssessment = run.assessed.get(key);
    if (!run.floorAssessment) {
      try {
        run.floorAssessment = judgePlanFloorReview(floorReview, {
          binary: resolveClaudeBinary() ?? 'claude', model: resolveEvalModel('warmup'), deadlineAt: run.deadlineAt });
      } catch (error) {
        return finish({ auqObserved: false, outcome: 'assessment_error',
          summary: `Finding assessment failed: ${error instanceof Error ? error.message : String(error)}`,
          evidence: run.viewport, elapsedMs: driver.now() - run.startedAt });
      }
      run.assessed.set(key, run.floorAssessment);
    }
    if (run.dxContext && run.floorAssessment.kind === 'setup' && pendingQuestion?.questions.length === 1 &&
        !pendingQuestion.questions[0]!.multiSelect && floorReview.candidate.transport === 'native') {
      const replyKey = `${pendingQuestion.sessionId}:${pendingQuestion.toolUseId}`;
      const questionViewport = planFloorDXPane(run.viewport, pendingQuestion)!;
      run.dxReplies.set(replyKey, { call: structuredClone(pendingQuestion), pane: questionViewport, reply: run.dxContext, stage: 'focus' });
    }
    if (run.floorAssessment.kind === 'finding') return finish({
      auqObserved: true, outcome: 'auq_observed',
      summary: `Current ${floorReview.candidate.transport} question addresses the owned seeded finding: ${run.floorAssessment.reason}`,
      evidence: run.viewport, elapsedMs: driver.now() - run.startedAt,
    });
  }

  // Silent write outside sanctioned dirs is the transcript-bug shape.
  const writeRe = /⏺\s*(?:Write|Edit)\(([^)]+)\)/g;
  let m: RegExpExecArray | null;
  while ((m = writeRe.exec(visible)) !== null) {
    const target = m[1] ?? '';
    const sanctioned = SANCTIONED_WRITE_SUBSTRINGS.some((s) => target.includes(s));
    if (!sanctioned && !isNumberedOptionListVisible(visible)) {
      return finish({
        auqObserved: false,
        outcome: 'silent_write',
        summary: `Write/Edit to ${target} fired before any AskUserQuestion`,
        evidence: visible.slice(-3000),
        elapsedMs: driver.now() - run.startedAt,
      });
    }
  }

  // Reached terminal without AUQ → transcript-bug regression.
  // Note: COMPLETION_SUMMARY_RE is intentionally NOT checked here — it
  // matches "GSTACK REVIEW REPORT" anywhere in the buffer, including
  // when the agent does recon by reading existing plan files (which
  // contain that string as a generated section). The plan_ready check
  // (claude's actual "Ready to execute" confirmation) is the reliable
  // terminal signal for "agent finished without asking."
  if (isPlanReadyVisible(visible)) {
    return finish({
      auqObserved: false,
      outcome: 'plan_ready',
      summary: 'agent reached plan_ready without a qualifying finding question',
      evidence: visible.slice(-3000),
      elapsedMs: driver.now() - run.startedAt,
    });
  }
  return 'continue';
}