Kjell Tore Guttormsen
cf75249b5e
Completes the deferred B8 half. `--context-window auto` now probes the configured model and calibrates SKL/CML budgets to its real window instead of always falling back to the conservative advisory anchor. - lib/context-window.mjs: pure modelToContextWindow() maps known 1M-tier model IDs (Fable 5, Opus 4.8/4.7/4.6, Sonnet 4.6 — verified June 2026 — plus the explicit [1m] tier tag, dated/provider-prefixed IDs, and the opus/sonnet/fable aliases) to the 1M window; unknown/unconfirmed -> null (caller keeps the conservative anchor). resolveContextWindow() auto branch now probes opts.model: recognized -> auto-probed (not advisory); unknown or unpinned -> auto-unresolved (advisory, pre-B8b behavior). - lib/active-model.mjs (new): resolveActiveModel() reads the model the way Claude Code resolves it — shell ANTHROPIC_MODEL override, then settings cascade local > project > user. Injectable env, hermetic under test HOME. - scan-orchestrator: resolves the active model only when the flag is `auto` and threads it into resolveContextWindow; posture inherits via runAllScanners. Default (no flag) and explicit --context-window <n> paths ignore the model and stay byte-stable; frozen v5.0.0 + SC-5 snapshots untouched. TDD: 17 new tests (context-window mapping/probe + active-model cascade). Suite 1296 green. Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
51 lines
2.2 KiB
JavaScript
51 lines
2.2 KiB
JavaScript
/**
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* Active-model resolution for the `--context-window auto` probe (B8b).
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*
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* Reads the configured model the way Claude Code itself resolves it, so the
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* window probe (context-window.mjs `modelToContextWindow`) sees the real model:
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* 1. the shell `ANTHROPIC_MODEL` override (applies to the launched session);
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* 2. otherwise the settings cascade `model` field — user `~/.claude`, then
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* project `.claude`, then project-local `.claude` (local > project > user).
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*
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* Reads the cascade files directly (like isBundledSkillsDisabled) rather than via
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* config-discovery classification, and takes an injectable `env` so it is
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* deterministic and hermetic under the test HOME. Returns null when no model is
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* pinned anywhere — the honest signal that `auto` must fall back to advisory.
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*
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* Zero external dependencies (repo invariant).
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*/
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import { join } from 'node:path';
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import { readTextFile } from './file-discovery.mjs';
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import { parseJson } from './yaml-parser.mjs';
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/**
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* @param {string|null|undefined} projectPath - project root, to also read project + local settings
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* @param {{ env?: Record<string,string|undefined> }} [opts]
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* @returns {Promise<string|null>} the resolved model id/alias, or null if unset
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*/
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export async function resolveActiveModel(projectPath, { env = process.env } = {}) {
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// 1. Shell ANTHROPIC_MODEL overrides settings (CC: applies to the session).
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const envModel = typeof env?.ANTHROPIC_MODEL === 'string' ? env.ANTHROPIC_MODEL.trim() : '';
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if (envModel) return envModel;
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// 2. Settings cascade: user -> project -> project-local, later wins.
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const home = (env && (env.HOME || env.USERPROFILE)) || '';
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const candidates = [];
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if (home) candidates.push(join(home, '.claude', 'settings.json'));
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if (projectPath) {
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candidates.push(join(projectPath, '.claude', 'settings.json'));
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candidates.push(join(projectPath, '.claude', 'settings.local.json'));
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}
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let model = null;
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for (const p of candidates) {
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const content = await readTextFile(p);
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if (!content) continue;
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const parsed = parseJson(content);
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if (parsed && typeof parsed.model === 'string' && parsed.model.trim()) {
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model = parsed.model.trim();
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}
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}
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return model;
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}
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