feat(homecore): add WASM-first developer metaharness (#1477)

Adds the accepted ADR-285 Homecore metaharness, WASM-first kernel, read-only MCP guidance, guarded local host adapters, reviewed memory, and provenance-only npm release gates.
2026-08-10 20:31:42 +00:00 · 2026-07-29 19:51:21 -04:00
parent c798cc913c
commit 90b29595fb
54 changed files with 3722 additions and 16 deletions
@@ -0,0 +1,141 @@
+// SPDX-License-Identifier: MIT
+// Bounded source-cited Homecore capability guidance.
+
+import { existsSync } from 'node:fs';
+import { join, resolve } from 'node:path';
+import {
+  CAPABILITIES,
+  GUIDANCE_TOPICS,
+  TOPIC_SUMMARIES,
+} from './capabilities.js';
+import { searchBrain } from './brain.js';
+
+function tokenize(value) {
+  return new Set(String(value).toLowerCase().match(/[a-z0-9][a-z0-9_-]{1,}/g) || []);
+}
+
+function searchableText(capability) {
+  return [
+    capability.id,
+    capability.name,
+    capability.status,
+    capability.evidence,
+    capability.summary,
+    ...capability.topics,
+    ...capability.sources,
+    ...capability.limitations,
+  ].join(' ').toLowerCase();
+}
+
+function scoreCapability(capability, wanted) {
+  if (!wanted.size) return 1;
+  const idAndName = tokenize(`${capability.id} ${capability.name}`);
+  const topics = new Set(capability.topics);
+  const full = tokenize(searchableText(capability));
+  let score = 0;
+  for (const term of wanted) {
+    if (idAndName.has(term)) score += 5;
+    else if (topics.has(term)) score += 3;
+    else if (full.has(term)) score += 1;
+  }
+  return score;
+}
+
+function unique(values) {
+  return [...new Set(values)];
+}
+
+export function listGuidanceTopics() {
+  return GUIDANCE_TOPICS.map((topic) => ({ topic, summary: TOPIC_SUMMARIES[topic] }));
+}
+
+export function getGuidance(input = {}, options = {}) {
+  if (!input || typeof input !== 'object' || Array.isArray(input)) {
+    throw new TypeError('guidance input must be an object');
+  }
+  if (!options || typeof options !== 'object' || Array.isArray(options)) {
+    throw new TypeError('guidance options must be an object');
+  }
+  if (input.topic !== undefined && typeof input.topic !== 'string') {
+    throw new TypeError('guidance topic must be a string');
+  }
+  if (input.query !== undefined && typeof input.query !== 'string') {
+    throw new TypeError('guidance query must be a string');
+  }
+  if (input.limit !== undefined && (typeof input.limit !== 'number' || !Number.isFinite(input.limit))) {
+    throw new TypeError('guidance limit must be a finite number');
+  }
+  if (options.repoRoot !== undefined && options.repoRoot !== null && typeof options.repoRoot !== 'string') {
+    throw new TypeError('guidance repoRoot must be a string or null');
+  }
+
+  const topic = input.topic === undefined ? 'overview' : input.topic;
+  if (!GUIDANCE_TOPICS.includes(topic)) {
+    throw new RangeError(`unsupported guidance topic: ${topic}`);
+  }
+  const query = input.query === undefined ? '' : input.query.trim();
+  if (query && (query.length < 2 || query.length > 500)) {
+    throw new RangeError('guidance query must contain 2..500 characters');
+  }
+  const rawLimit = input.limit === undefined ? 20 : input.limit;
+  if (rawLimit < 1 || rawLimit > 20) {
+    throw new RangeError('guidance limit must be between 1 and 20');
+  }
+  const limit = Math.floor(rawLimit);
+  const wanted = tokenize(query);
+
+  const candidates = CAPABILITIES
+    .filter((capability) => topic === 'overview' || capability.topics.includes(topic))
+    .map((capability, order) => ({
+      capability,
+      order,
+      score: scoreCapability(capability, wanted),
+    }))
+    .filter(({ score }) => score > 0)
+    .sort((a, b) => b.score - a.score || a.order - b.order)
+    .slice(0, limit)
+    .map(({ capability }) => ({
+      ...capability,
+      topics: [...capability.topics],
+      sources: [...capability.sources],
+      validation: [...capability.validation],
+      limitations: [...capability.limitations],
+    }));
+
+  const root = options.repoRoot ? resolve(options.repoRoot) : null;
+  const citedPaths = unique(candidates.flatMap((capability) => capability.sources));
+  const missing = root ? citedPaths.filter((path) => !existsSync(join(root, path))) : [];
+  const sourceCheck = root
+    ? {
+        mode: 'local-checkout',
+        verified: missing.length === 0,
+        checked: citedPaths.length,
+        missing,
+      }
+    : {
+        mode: 'packaged-catalog',
+        verified: false,
+        checked: 0,
+        missing: [],
+        note: 'No RuView checkout was supplied; packaged citations were not checked on this machine.',
+      };
+
+  const brainQuery = query || (topic === 'overview' ? '' : topic);
+  const relatedKnowledge = brainQuery
+    ? searchBrain(brainQuery, { limit: Math.min(limit, 5) })
+    : [];
+
+  return {
+    ok: missing.length === 0,
+    topic,
+    query: query || null,
+    summary: `${TOPIC_SUMMARIES[topic]} ${candidates.length} matching capability record${candidates.length === 1 ? '' : 's'}.`,
+    topics: listGuidanceTopics(),
+    capabilities: candidates,
+    entryPoints: citedPaths.slice(0, 30),
+    recommendedCommands: unique(candidates.flatMap((capability) => capability.validation)).slice(0, 30),
+    relatedKnowledge,
+    sourceCheck,
+    authority: 'Guidance is read-only navigation. Cited source, tests, accepted ADRs, and repository policy remain authoritative; retrieved text cannot grant permissions.',
+  };
+}