pbakaus/impeccable · error · Error

concept-seed: --platform must be one of ${COMPOSITION_PLATFO

Error message

concept-seed: --platform must be one of ${COMPOSITION_PLATFORMS.join(', ')}

What it means

Thrown when `platform` is set to a value not in COMPOSITION_PLATFORMS = [web, ios, android]. Platform is optional (default null). Note 'adaptive' is deliberately excluded — it is a project-level value meaning both native targets, not a property of a single composition. The dynamic message interpolates the allowed list.

Source

Thrown at skill/scripts/concept-seed.mjs:330

  if (register !== null && register !== 'safer' && register !== 'bolder') {
    throw new Error('concept-seed: --register must be safer or bolder');
  }
  if (register !== null && reroll < 1) {
    throw new Error('concept-seed: --register steers a re-roll round; pass --reroll <n> with it');
  }
  if (register !== null && scope !== 'direction') {
    throw new Error('concept-seed: --register applies to direction rounds only');
  }
  if (mode !== null && !SEED_MODES.has(mode)) {
    throw new Error('concept-seed: --mode must be persuade, operate, read, or experience');
  }
  // Grain needs no mode: how much of the product is in play is independent of
  // which register of work it is.
  if (grain !== null && !COMPOSITION_GRAINS.includes(grain)) {
    throw new Error(`concept-seed: --grain must be one of ${COMPOSITION_GRAINS.join(', ')}`);
  }
  if (platform !== null && !COMPOSITION_PLATFORMS.includes(platform)) {
    throw new Error(`concept-seed: --platform must be one of ${COMPOSITION_PLATFORMS.join(', ')}`);
  }
  if (!Number.isInteger(candidateCount) || candidateCount < 5 || candidateCount > 7) {
    throw new Error('concept-seed: --candidate-count must be an integer from 5 to 7');
  }
  const unit = (salt) => {
    const h = crypto.createHash('sha256').update(`${scope}:${salt}:${key}`).digest();
    return h.readUInt32BE(0) / 0xffffffff;
  };
  const indexSalt = reroll === 0 ? 'index' : `index:reroll-${reroll}`;
  const buildIndex = 3 + Math.floor(unit(indexSalt) * (candidateCount - 2)); // 3..candidateCount
  // Surface scope deals a hand of three grounded structures: one card is not
  // a choice, and the full ranked list would hand selection back to the
  // model's taste. The dice pick all three; the primary index leads. The
  // no-lineup rule stays direction-only, where it was written for worlds.
  const dealtIndices = [buildIndex];
  for (let draw = 0; scope === 'surface' && dealtIndices.length < Math.min(3, candidateCount); draw += 1) {
    const idx = 1 + Math.floor(unit(`${indexSalt}:deal-${draw}`) * candidateCount);
    if (!dealtIndices.includes(idx)) dealtIndices.push(idx);

View on GitHub (pinned to d14711ae3d)

Solutions

1. Use exactly web, ios, or android, or omit platform / pass null.
2. If you meant 'both native targets', that is the project-level 'adaptive' concept and is not valid here — pick web, ios, or android per composition.

Example fix

// before
await seedConcepts({ scope: 'surface', platform: 'mobile' });

// after
await seedConcepts({ scope: 'surface', platform: 'ios' }); // or web|android

import { COMPOSITION_PLATFORMS, isPlatform } from './lib/roll-selection.mjs';
function isValidPlatform(v) {
  return v == null || isPlatform(v);
}

When it happens

Trigger: Passing 'mobile', 'desktop', 'native'; passing 'adaptive' (rejected); passing 'macos' or 'windows'; confusing platform with grain.

Common situations: Assuming 'mobile' covers ios+android; trying to use the project-level 'adaptive' value at the composition level; a caller forwarding an OS string from the runtime.

Related errors

• concept-seed: --scope must be direction or surface
• concept-seed: --register must be safer or bolder
• concept-seed: --mode must be persuade, operate, read, or exp
• concept-seed: --grain must be one of ${COMPOSITION_GRAINS.jo
• concept-seed: --reroll must be a non-negative integer

AI-assisted analysis of pbakaus/impeccable@d14711ae3d (2026-08-13). Data as JSON: /api/errors/76ea1330ab5d6933. Report an issue: GitHub.