src/core/ai/model-resolver.ts:parseModelId now accepts both
provider:model (colon) and provider/model (slash) forms. Colon wins
when both separators present so OpenRouter nested ids like
openrouter:anthropic/claude-sonnet-4.6 route as
{providerId: 'openrouter', modelId: 'anthropic/claude-sonnet-4.6'}.

Pre-fix: every gateway entry point (chat / embed / rerank) threw
AIConfigError 'missing a provider prefix' on slash form ids. That
meant CLI users running

  gbrain brainstorm --judge-model anthropic/claude-sonnet-4-6

would still fail mid-judge with AIConfigError even after pricing
was relaxed to accept slash form. Closes the end-to-end bug class.

Bare names without ANY separator still throw — gateway routing
always needs an explicit provider. Existing tests pinning that
throw (test/ai/capabilities.test.ts:43) stay green.

Pinned by 10 cases in test/ai/model-resolver-slash.test.ts
including a resolveRecipe round-trip that slash and colon forms
land on the same recipe.

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

Five sites had inline ':'-only provider-prefix splits that silently
missed slash-form ids. Centralizing through splitProviderModelId
closes the bug class:

  - src/core/anthropic-pricing.ts:estimateMaxCostUsd
  - src/core/budget/budget-tracker.ts:lookupPricing (closes the
    headline BudgetExhausted no_pricing failure on --max-cost +
    slash-form --judge-model)
  - src/core/eval-contradictions/cost-tracker.ts:pricingFor
    (legacy silent-Haiku fallback preserved per plan D9)
  - src/core/minions/batch-projection.ts (deleted bareModel inline
    helper; inlined splitProviderModelId at 2 call sites)
  - src/core/model-config.ts:isAnthropicProvider (silently fixed
    v0.31.12 subagent-guard bypass for slash-form Anthropic ids)

Test gates land together so any bisect step is green:

  - NEW test/anthropic-pricing.test.ts (7 cases including structural
    regression guard: every ANTHROPIC_PRICING key reachable via all
    three forms)
  - NEW test/eval-contradictions/cost-tracker-slash.test.ts (6 cases
    including legacy-Haiku-fallback pin)
  - EXTENDED test/batch-projection.test.ts (slash + double-separator
    cases)
  - EXTENDED test/model-config.serial.test.ts (2 slash-form
    isAnthropicProvider cases)
  - EXTENDED test/core/budget/budget-tracker.test.ts (2 slash + colon
    reserve() cases)

Behavior changes for slash-prefix ids only; bare and colon ids
unchanged.

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

Replace the hard-coded maxTokens: 4000 with computeJudgeMaxTokens
that scales with idea count and respects each model's actual output
cap.

Pre-fix: any judge call with 36+ ideas produced ~100 tokens/idea of
JSON that got truncated mid-output. parseJudgeJSON threw, orchestrator
surfaced judge_failed: true, all ideas saved unscored. Verified
failure mode on 72-idea fixture: 0/72 passing before, 39/72 after.

Formula: min(modelCap, max(LEGACY_MIN_MAX_TOKENS, ideaCount*150+500))

Named constants extracted at top of judges.ts:

  - TOKEN_BUDGET_PER_IDEA = 150 (1.5x headroom over observed ~100/idea)
  - TOKEN_BUDGET_ENVELOPE = 500 (JSON wrapper)
  - LEGACY_MIN_MAX_TOKENS = 4000 (pre-fix floor preserved for 1-idea)
  - MAX_OUTPUT_TOKENS_CEIL = 32_000 (fallback when model unknown)
  - ANTHROPIC_OUTPUT_CAPS (per-model: Opus 4.7 = 32K, Sonnet 4.6 /
    Haiku 4.5 = 64K, legacy 3.5 = 8K)

When the caller passes no modelOverride, the cap routes through the
gateway's actual configured chat model via getChatModel() so the
formula matches what chat() will use, not whatever the override
hints at. Pre-fix the undefined-override case fell back to 32K even
if the configured default was a legacy 8K model.

Pinned by 16 cases in test/brainstorm/judges-maxtokens.test.ts:
formula at 1/10/36/96/200/300 ideas, per-model cap binding (Haiku 3.5
8K, Opus 4.7 32K, Sonnet 4.6 64K), and integration via runJudge with
a stubbed chatFn that captures ChatOpts.maxTokens.

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

Brainstorm judge fix-wave: closes #1540 end-to-end. parseModelId
centralizer + gateway resolver slash-form acceptance + per-model
maxTokens cap.

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

CLAUDE.md: add v0.41.21.0 annotations to brainstorm/judges + model-config
entries; add new key-files entry for src/core/model-id.ts (the shared
splitProviderModelId centralizer) and src/core/ai/model-resolver.ts
slash-form extension.

README.md: add user-facing callout for the brainstorm judge_failed +
slash-form pricing fix, mirroring the v0.41.19.0 callout shape.

llms-full.txt: regenerated to absorb the CLAUDE.md + README changes
(passes test/build-llms.test.ts drift guard).

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>