fix(schema): block scalars keep '#' as literal content

Inside a YAML block scalar '#' is content, not a comment; parseBlockScalar
was routing lines through stripComment/isBlank, truncating descriptions
like 'see issue #2029' and blanking comment-looking lines. Use the raw
line inside the scalar. Adds a pinning test.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

src/cli.ts

@@ -365,12 +365,6 @@ async function main() {
     if (def.required && params[key] === undefined) {
       if (queryHasAlt && key === 'query') continue;
       const cliName = op.cliHints?.name || op.name;
-      // #2822: when the missing param is the op's stdin-fed one, the usage
-      // line alone is misleading (the positionals may all be present — the
-      // pipe was just empty). Name the real problem.
-      if (op.cliHints?.stdin === key) {
-        console.error(`Error: required "${key}" is missing — stdin was empty or not piped. Pipe content on stdin or pass --${key.replace(/_/g, '-')}.`);
-      }
       const positional = op.cliHints?.positional || [];
       const usage = positional.map(p => `<${p}>`).join(' ');
       console.error(`Usage: gbrain ${cliName} ${usage}`);
@@ -767,10 +761,6 @@ export function parseOpArgs(op: Operation, args: string[]): Record<string, unkno
   const params: Record<string, unknown> = {};
   const positional = op.cliHints?.positional || [];
   let posIdx = 0;
-  // #2822: track which params came from positionals so a later flag that
-  // silently discards one (`gbrain put CONTENT --slug foo` — CONTENT was
-  // parsed as the slug) gets a stderr warning instead of vanishing.
-  const positionallySet = new Set<string>();
 
   for (let i = 0; i < args.length; i++) {
     const arg = args[i];
@@ -788,20 +778,13 @@ export function parseOpArgs(op: Operation, args: string[]): Record<string, unkno
       if (paramDef?.type === 'boolean') {
         params[key] = true;
       } else if (i + 1 < args.length) {
-        if (positionallySet.has(key) && params[key] !== args[i + 1]) {
-          console.error(`Warning: ${arg} overrides the positional <${key}> value ${JSON.stringify(params[key])}.`);
-        }
         params[key] = args[++i];
         if (paramDef?.type === 'number') params[key] = Number(params[key]);
       }
     } else if (posIdx < positional.length) {
       const key = positional[posIdx++];
       const paramDef = op.params[key];
-      if (params[key] !== undefined && params[key] !== (paramDef?.type === 'number' ? Number(arg) : arg)) {
-        console.error(`Warning: positional <${key}> overrides the earlier --${key.replace(/_/g, '-')} value ${JSON.stringify(params[key])}.`);
-      }
       params[key] = paramDef?.type === 'number' ? Number(arg) : arg;
-      positionallySet.add(key);
     }
   }
 
@@ -813,11 +796,7 @@ export function parseOpArgs(op: Operation, args: string[]): Record<string, unkno
       console.error(`Error: stdin content exceeds ${MAX_STDIN} bytes. Split into smaller inputs.`);
       process.exit(1);
     }
-    // #2822: empty/whitespace-only stdin (cron with no input, broken pipe)
-    // stays UNSET so the required-param check rejects the call instead of
-    // silently writing an empty page (0 chunks, invisible to search and
-    // embed --stale).
-    if (stdinContent.trim().length > 0) params[op.cliHints.stdin] = stdinContent;
+    params[op.cliHints.stdin] = stdinContent;
   }
 
   return params;

src/commands/lint.ts

@@ -48,7 +48,6 @@ const FRONTMATTER_RULE_NAMES: Record<ParseValidationCode, string> = {
   NESTED_QUOTES: 'frontmatter-nested-quotes',
   NON_STRING_FIELD: 'frontmatter-non-string-field',
   EMPTY_FRONTMATTER: 'frontmatter-empty',
-  MULTI_FRONTMATTER: 'frontmatter-multi',
 };
 
 /** Codes whose lint findings are fixable by `gbrain frontmatter validate --fix`. */

src/core/ai/anthropic-key.ts

@@ -18,12 +18,22 @@
 import { loadConfig } from '../config.ts';
 
 export function hasAnthropicKey(): boolean {
-  if (process.env.ANTHROPIC_API_KEY) return true;
+  return resolveAnthropicKey() !== undefined;
+}
+
+/**
+ * Resolve the actual key value: env first, then the gbrain config file.
+ * Callers constructing an Anthropic client directly (e.g. the legacy
+ * subagent path) must pass this as `apiKey` — a bare `new Anthropic()`
+ * only sees env, so launchd/MCP workers with config-stored keys fail.
+ */
+export function resolveAnthropicKey(): string | undefined {
+  if (process.env.ANTHROPIC_API_KEY) return process.env.ANTHROPIC_API_KEY;
   try {
     const cfg = loadConfig();
-    if (cfg?.anthropic_api_key) return true;
+    if (cfg?.anthropic_api_key) return cfg.anthropic_api_key;
   } catch {
     // loadConfig may throw on first-run installs; treat as no key available.
   }
-  return false;
+  return undefined;
 }

src/core/import-file.ts

@@ -301,17 +301,6 @@ export async function importFromContent(
   // silently fabricated a duplicate at (default, slug) — causing later
   // bare-slug subqueries (getTags, deleteChunks, etc.) to crash with 21000.
   const sourceId = opts.sourceId;
-  // #2822: reject empty/whitespace-only content before any work happens. An
-  // empty page writes 0 chunks — invisible to search AND to `embed --stale`
-  // (nothing to embed), so the mistake never surfaces. Empty content is
-  // always a caller bug (empty piped stdin, bad shell substitution). Thrown
-  // (not returned) so every wrapper site surfaces the message, matching the
-  // ContentSanityBlockError flow.
-  if (content.trim().length === 0) {
-    throw new Error(
-      `Content for "${slug}" is empty; refusing to write an empty page (0 chunks would be invisible to search and embed --stale).`,
-    );
-  }
   // Reject oversized payloads before any parsing, chunking, or embedding happens.
   // Uses Buffer.byteLength to count UTF-8 bytes the same way disk size would,
   // so the network path behaves identically to the file path.
@@ -325,17 +314,7 @@ export async function importFromContent(
     };
   }
 
-  const parsed = parseMarkdown(content, slug + '.md', { activePack: opts.activePack, validate: true });
-
-  // #2743: reject stacked frontmatter (the double-put corruption class —
-  // already-serialized markdown re-wrapped in fresh frontmatter). gray-matter
-  // parses only the first block; the second would land verbatim in the body
-  // and poison every subsequent round-trip. Only MULTI_FRONTMATTER rejects
-  // here — the other validation codes keep their lint-only semantics.
-  const multiFm = parsed.errors?.find(e => e.code === 'MULTI_FRONTMATTER');
-  if (multiFm) {
-    throw new Error(`MULTI_FRONTMATTER: ${multiFm.message} (slug "${slug}", line ${multiFm.line})`);
-  }
+  const parsed = parseMarkdown(content, slug + '.md', { activePack: opts.activePack });
 
   // v0.42 (#1699 trust boundary): strip gate-owned markers from UNTRUSTED
   // input. parseMarkdown preserves every frontmatter key except type/title/

src/core/markdown.ts

@@ -11,8 +11,7 @@ export type ParseValidationCode =
   | 'NULL_BYTES'
   | 'NESTED_QUOTES'
   | 'NON_STRING_FIELD'
-  | 'EMPTY_FRONTMATTER'
-  | 'MULTI_FRONTMATTER';
+  | 'EMPTY_FRONTMATTER';
 
 export interface ParseValidationError {
   code: ParseValidationCode;
@@ -332,50 +331,6 @@ function collectValidationErrors(
       });
     }
   }
-
-  // 9. MULTI_FRONTMATTER (#2743) — a second ---…--- block right after the
-  //    closing fence is stacked frontmatter (the double-put corruption class:
-  //    already-serialized markdown re-wrapped in fresh frontmatter).
-  //    gray-matter parses only the first block and silently leaves the second
-  //    in the body. Heuristic: first non-empty line after the close is `---`,
-  //    a later `---` closes it, EVERY line between is frontmatter-shaped
-  //    (YAML `key:`, `- ` list item, `#` comment, indented continuation, or
-  //    blank — the issue's "stop at the first non-frontmatter character"
-  //    spec), and at least one is a `key:` line. A lone `---` stays a
-  //    markdown horizontal rule, and an hrule followed by prose — even
-  //    colon-prefixed prose like `Note: …` mixed with plain lines — is body
-  //    content, not a stacked block.
-  let afterClose = closeLine + 1;
-  while (afterClose < lines.length && lines[afterClose].trim().length === 0) afterClose++;
-  if (afterClose < lines.length && lines[afterClose].trim() === '---') {
-    let secondClose = -1;
-    for (let i = afterClose + 1; i < lines.length; i++) {
-      const trimmed = lines[i].trim();
-      if (trimmed === '---') {
-        secondClose = i;
-        break;
-      }
-      const yamlShaped =
-        trimmed.length === 0 ||
-        /^[A-Za-z_][\w-]*\s*:/.test(trimmed) ||
-        trimmed.startsWith('- ') ||
-        trimmed === '-' ||
-        trimmed.startsWith('#') ||
-        /^\s/.test(lines[i]);
-      if (!yamlShaped) break; // first non-frontmatter line → body prose, not a stacked block
-    }
-    if (
-      secondClose > afterClose + 1 &&
-      lines.slice(afterClose + 1, secondClose).some(l => /^\s*[A-Za-z_][\w-]*\s*:/.test(l))
-    ) {
-      errors.push({
-        code: 'MULTI_FRONTMATTER',
-        message:
-          'Stacked frontmatter: a second ---…--- block follows the frontmatter (double-put corruption); merge into a single frontmatter block',
-        line: afterClose + 1,
-      });
-    }
-  }
 }
 
 /**

src/core/minions/handlers/subagent.ts

@@ -48,6 +48,7 @@ import {
   logSubagentHeartbeat,
 } from './subagent-audit.ts';
 import { resolveModel, isAnthropicProvider, TIER_DEFAULTS } from '../../model-config.ts';
+import { resolveAnthropicKey } from '../../ai/anthropic-key.ts';
 import { buildSystemPrompt, DEFAULT_SUBAGENT_SYSTEM } from '../system-prompt.ts';
 import { toolLoop as gatewayToolLoop } from '../../ai/gateway.ts';
 import type { ChatToolDef, ChatMessage, ChatBlock, ChatResult, ToolHandler } from '../../ai/gateway.ts';
@@ -186,7 +187,10 @@ export function makeSubagentHandler(deps: SubagentDeps) {
   // lives at sdk.messages.create. Assigning sdk.messages directly gets the
   // right object; JS method-call semantics preserve `this` at the call
   // site (subagent.ts invokes client.create(...) with client === sdk.messages).
-  const makeAnthropic = deps.makeAnthropic ?? (() => new Anthropic());
+  // Resolve the key env-first, then config (anthropic_api_key) — a bare
+  // new Anthropic() only reads env, so launchd/MCP workers whose key lives
+  // in the gbrain config file would fail auth (#2048).
+  const makeAnthropic = deps.makeAnthropic ?? (() => new Anthropic({ apiKey: resolveAnthropicKey() }));
   const client: MessagesClient = deps.client ?? makeAnthropic().messages;
   const config = deps.config ?? loadConfig() ?? ({ engine: 'postgres' } as GBrainConfig);
   const rateLeaseKey = deps.rateLeaseKey ?? DEFAULT_RATE_KEY;

src/core/operations.ts

@@ -4562,7 +4562,8 @@ const list_schema_packs: Operation = {
     const { existsSync, readdirSync } = await import('node:fs');
     const { join } = await import('node:path');
     const { gbrainPath } = await import('./config.ts');
-    const bundled = ['gbrain-base', 'gbrain-recommended'];
+    const { BUNDLED_PACK_NAMES } = await import('./schema-pack/bundled.ts');
+    const bundled = [...BUNDLED_PACK_NAMES];
     const installedDir = gbrainPath('schema-packs');
     const installed: string[] = [];
     if (existsSync(installedDir)) {

src/core/schema-pack/bundled.ts

@@ -0,0 +1,24 @@
+// Bundled schema-pack registry — single source of truth for the packs that
+// ship in src/core/schema-pack/base/. Keep every bundled-pack consumer
+// (CLI/MCP inspection, active-pack loading, mutation guards, upgrade
+// discovery) on this one list so they cannot drift.
+//
+// v0.39 T8 — gbrain-base + gbrain-recommended.
+// v0.41 T4 — lens packs: creator, investor, engineer, everything (meta-pack).
+// v0.42 type-unification — gbrain-base-v2, the 15-type canonical successor.
+
+export const BUNDLED_PACK_NAMES = [
+  'gbrain-base',
+  'gbrain-recommended',
+  'gbrain-creator',
+  'gbrain-investor',
+  'gbrain-engineer',
+  'gbrain-everything',
+  'gbrain-base-v2',
+] as const;
+
+export type BundledPackName = typeof BUNDLED_PACK_NAMES[number];
+
+export function isBundledPackName(name: string): name is BundledPackName {
+  return (BUNDLED_PACK_NAMES as readonly string[]).includes(name);
+}

src/core/schema-pack/load-active.ts

@@ -37,6 +37,7 @@ import {
   type ResolutionInput,
   type ResolutionResult,
 } from './registry.ts';
+import { isBundledPackName } from './bundled.ts';
 
 /**
  * Inputs the caller (operations.ts handler / engine query path) provides.
@@ -92,28 +93,7 @@ export function _resetPackLocatorForTests(): void {
  * throwing UnknownPackError with a paste-ready install hint.
  */
 function defaultPackLocator(name: string): string | null {
-  // v0.39 T8 — bundled packs registry. gbrain-base + gbrain-recommended
-  // ship in src/core/schema-pack/base/. Add a new entry here to bundle
-  // additional canonical packs.
-  //
-  // v0.41 T4 — lens packs join the bundle: creator (atoms + concepts +
-  // extract_atoms/synthesize_concepts phases), investor (theses + bet
-  // resolution + 3 calibration domains), engineer (gstack-learnings bridge
-  // + 3 calibration domains), everything (meta-pack stacking all three
-  // via extends + borrow_from). Each ships as a real YAML at base/<name>.yaml.
-  const BUNDLED: ReadonlyArray<string> = [
-    'gbrain-base',
-    'gbrain-recommended',
-    'gbrain-creator',
-    'gbrain-investor',
-    'gbrain-engineer',
-    'gbrain-everything',
-    // v0.42 type-unification: 15-type canonical successor to gbrain-base.
-    // Ships as install default (Lane E T17) + via gbrain onboard pack
-    // upgrade flow (the unify-types Minion handler).
-    'gbrain-base-v2',
-  ];
-  if (BUNDLED.includes(name)) {
+  if (isBundledPackName(name)) {
     // Resolve bundled YAML relative to this source file. Works in both
     // direct-bun execution and bun --compile binaries.
     const here = dirname(fileURLToPath(import.meta.url));

src/core/schema-pack/loader.ts

@@ -159,6 +159,29 @@ export function parseYamlMini(content: string): unknown {
     return parseMapping(baseIndent);
   }
 
+  function parseBlockScalar(parentIndent: number, folded: boolean): string {
+    const contentIndent = parentIndent + 2;
+    const out: string[] = [];
+    while (i < lines.length) {
+      const raw = lines[i];
+      // Inside a block scalar everything is literal content — '#' is NOT a
+      // comment here, so use the raw line (no stripComment / isBlank).
+      if (raw.trim() === '') {
+        out.push('');
+        i++;
+        continue;
+      }
+      const indent = indentOf(raw);
+      if (indent <= parentIndent) break;
+      out.push(raw.slice(Math.min(contentIndent, indent)));
+      i++;
+    }
+    if (folded) {
+      return out.join(' ').replace(/\s+$/u, '');
+    }
+    return out.join('\n').replace(/\n+$/u, '');
+  }
+
   function parseSequence(baseIndent: number): unknown[] {
     const result: unknown[] = [];
     while (i < lines.length) {
@@ -227,6 +250,10 @@ export function parseYamlMini(content: string): unknown {
           i++;
           if (rest2 === '') {
             map[key2] = parseBlock(nextIndent + 2);
+          } else if (rest2 === '|' || rest2 === '|-' || rest2 === '|+') {
+            map[key2] = parseBlockScalar(nextIndent, false);
+          } else if (rest2 === '>' || rest2 === '>-' || rest2 === '>+') {
+            map[key2] = parseBlockScalar(nextIndent, true);
           } else {
             map[key2] = parseScalar(rest2);
           }
@@ -257,6 +284,10 @@ export function parseYamlMini(content: string): unknown {
       i++;
       if (rest === '') {
         result[key] = parseBlock(indent + 2);
+      } else if (rest === '|' || rest === '|-' || rest === '|+') {
+        result[key] = parseBlockScalar(indent, false);
+      } else if (rest === '>' || rest === '>-' || rest === '>+') {
+        result[key] = parseBlockScalar(indent, true);
       } else {
         result[key] = parseScalar(rest);
       }

src/core/schema-pack/mutate.ts

@@ -65,6 +65,7 @@ import { invalidateQueryCache } from './query-cache-invalidator.ts';
 import { logMutationFailure, logMutationSuccess, type MutationActor, type MutationOp } from './mutate-audit.ts';
 import { runFilePlaneLintRules } from './lint-rules.ts';
 import { withPackLock, type PackLockOpts } from './pack-lock.ts';
+import { BUNDLED_PACK_NAMES as BUNDLED_PACK_NAME_LIST } from './bundled.ts';
 import type { BrainEngine } from '../engine.ts';
 
 export type PackFileFormat = 'json' | 'yaml';
@@ -93,7 +94,7 @@ export class SchemaPackMutationError extends Error {
   }
 }
 
-export const BUNDLED_PACK_NAMES = new Set(['gbrain-base', 'gbrain-recommended', 'gbrain-base-v2']);
+export const BUNDLED_PACK_NAMES = new Set<string>(BUNDLED_PACK_NAME_LIST);
 
 export interface MutateResult {
   /** Pack name that was mutated. */

test/ai/anthropic-key.test.ts

@@ -10,7 +10,7 @@ import { mkdtempSync, mkdirSync, writeFileSync, rmSync } from 'node:fs';
 import { tmpdir } from 'node:os';
 import { join } from 'node:path';
 import { withEnv } from '../helpers/with-env.ts';
-import { hasAnthropicKey } from '../../src/core/ai/anthropic-key.ts';
+import { hasAnthropicKey, resolveAnthropicKey } from '../../src/core/ai/anthropic-key.ts';
 
 const tmpDirs: string[] = [];
 function freshHome(withConfig?: Record<string, unknown>): string {
@@ -62,3 +62,35 @@ describe('hasAnthropicKey', () => {
     );
   });
 });
+
+describe('resolveAnthropicKey (#2048 — subagent config-key auth)', () => {
+  test('env wins over config', async () => {
+    const home = freshHome({ anthropic_api_key: 'sk-from-config' });
+    await withEnv(
+      { ANTHROPIC_API_KEY: 'sk-from-env', GBRAIN_HOME: home, DATABASE_URL: undefined, GBRAIN_DATABASE_URL: undefined },
+      async () => {
+        expect(resolveAnthropicKey()).toBe('sk-from-env');
+      },
+    );
+  });
+
+  test('config key returned when env unset', async () => {
+    const home = freshHome({ anthropic_api_key: 'sk-from-config' });
+    await withEnv(
+      { ANTHROPIC_API_KEY: undefined, GBRAIN_HOME: home, DATABASE_URL: undefined, GBRAIN_DATABASE_URL: undefined },
+      async () => {
+        expect(resolveAnthropicKey()).toBe('sk-from-config');
+      },
+    );
+  });
+
+  test('neither → undefined', async () => {
+    const home = freshHome();
+    await withEnv(
+      { ANTHROPIC_API_KEY: undefined, GBRAIN_HOME: home, DATABASE_URL: undefined, GBRAIN_DATABASE_URL: undefined },
+      async () => {
+        expect(resolveAnthropicKey()).toBeUndefined();
+      },
+    );
+  });
+});

test/cli-args.test.ts

@@ -1,8 +1,4 @@
-import { afterEach, describe, expect, test } from 'bun:test';
-import { spawnSync } from 'child_process';
-import { join, resolve } from 'path';
-import { mkdtempSync, rmSync } from 'fs';
-import { tmpdir } from 'os';
+import { describe, expect, test } from 'bun:test';
 import { parseOpArgs } from '../src/cli.ts';
 import { operationsByName } from '../src/core/operations.ts';
 
@@ -24,70 +20,5 @@ describe('parseOpArgs', () => {
       source_id: 'gstack-code-repo-0e4763c9',
     });
   });
-
-  describe('positional/flag overwrite warning (#2822)', () => {
-    const errors: string[] = [];
-    const origError = console.error;
-    const captureErrors = () => {
-      console.error = (...args: unknown[]) => errors.push(args.join(' '));
-    };
-    afterEach(() => {
-      console.error = origError;
-      errors.length = 0;
-    });
-
-    test('a flag that overwrites a positional value warns to stderr', () => {
-      captureErrors();
-      const params = parseOpArgs(operationsByName.query, ['positional text', '--query', 'flag text']);
-      expect(params.query).toBe('flag text');
-      expect(errors.some(e => e.includes('Warning') && e.includes('--query'))).toBe(true);
-    });
-
-    test('a positional that overwrites an earlier flag value warns to stderr', () => {
-      captureErrors();
-      const params = parseOpArgs(operationsByName.query, ['--query', 'flag text', 'positional text']);
-      expect(params.query).toBe('positional text');
-      expect(errors.some(e => e.includes('Warning') && e.includes('<query>'))).toBe(true);
-    });
-
-    test('no warning when flag and positional agree', () => {
-      captureErrors();
-      parseOpArgs(operationsByName.query, ['same', '--query', 'same']);
-      expect(errors).toEqual([]);
-    });
-  });
 });
 
-describe('gbrain put — empty non-TTY stdin rejects (#2822)', () => {
-  const REPO = resolve(import.meta.dir, '..');
-  const CLI = join(REPO, 'src', 'cli.ts');
-
-  const runPut = (input: string) => {
-    // Isolated HOME so a regression can never write into a real brain.
-    const home = mkdtempSync(join(tmpdir(), 'gbrain-put-empty-'));
-    try {
-      return spawnSync('bun', [CLI, 'put', 'inbox/empty-stdin-test'], {
-        stdio: ['pipe', 'pipe', 'pipe'],
-        input,
-        encoding: 'utf-8',
-        timeout: 60_000,
-        env: { ...process.env, HOME: home, GBRAIN_SKIP_STARTUP_HOOKS: '1' },
-      });
-    } finally {
-      rmSync(home, { recursive: true, force: true });
-    }
-  };
-
-  test('empty stdin exits 1 and names the missing content param', () => {
-    const res = runPut('');
-    expect(res.status).toBe(1);
-    expect(res.stderr).toContain('content');
-    expect(res.stderr).toContain('stdin');
-  }, 90_000);
-
-  test('whitespace-only stdin also exits 1', () => {
-    const res = runPut('   \n\t\n');
-    expect(res.status).toBe(1);
-    expect(res.stderr).toContain('stdin');
-  }, 90_000);
-});

test/import-file.test.ts

@@ -708,32 +708,3 @@ body unchanged
     expect(shortCircuited).toBe(true);
   });
 });
-
-describe('importFromContent — empty content guard (#2822)', () => {
-  test('empty string throws instead of writing an invisible 0-chunk page', async () => {
-    const engine = mockEngine();
-    await expect(importFromContent(engine, 'inbox/empty', '', { noEmbed: true })).rejects.toThrow(/empty/i);
-    expect((engine as any)._calls.find((c: any) => c.method === 'putPage')).toBeUndefined();
-  });
-
-  test('whitespace-only content throws', async () => {
-    const engine = mockEngine();
-    await expect(importFromContent(engine, 'inbox/ws', '  \n\t \n', { noEmbed: true })).rejects.toThrow(/empty/i);
-  });
-});
-
-describe('importFromContent — stacked frontmatter rejection (#2743)', () => {
-  test('double-put shaped content (two ---…--- blocks) throws MULTI_FRONTMATTER', async () => {
-    const engine = mockEngine();
-    const md = '---\ntitle: outer\n---\n\n---\ntitle: inner\ntype: concept\n---\n\nreal body';
-    await expect(importFromContent(engine, 'inbox/double', md, { noEmbed: true })).rejects.toThrow(/MULTI_FRONTMATTER/);
-    expect((engine as any)._calls.find((c: any) => c.method === 'putPage')).toBeUndefined();
-  });
-
-  test('normal content with horizontal rules in the body still imports', async () => {
-    const engine = mockEngine();
-    const md = '---\ntitle: ok\ntype: concept\n---\n\nprose before\n\n---\n\nprose after the rule';
-    const result = await importFromContent(engine, 'inbox/hrule', md, { noEmbed: true });
-    expect(result.status).toBe('imported');
-  });
-});

test/lens-pack-manifests.test.ts

@@ -55,13 +55,13 @@ describe('v0.41 T4: all 4 bundled lens packs parse cleanly', () => {
 });
 
 describe('v0.41 T4: bundled registry includes lens packs', () => {
-  test('load-active.ts BUNDLED array source includes the 4 lens pack names', () => {
-    const loadActiveSrc = readFileSync(
-      join(here, '..', 'src', 'core', 'schema-pack', 'load-active.ts'),
-      'utf-8',
-    );
+  test('BUNDLED_PACK_NAMES includes the 4 lens pack names', async () => {
+    // The bundled list moved from load-active.ts to bundled.ts (the
+    // single source of truth); assert the array directly instead of
+    // grepping source text.
+    const { BUNDLED_PACK_NAMES } = await import('../src/core/schema-pack/bundled.ts');
     for (const name of PACK_NAMES) {
-      expect(loadActiveSrc).toContain(`'${name}'`);
+      expect(BUNDLED_PACK_NAMES).toContain(name);
     }
   });
 });

test/markdown-validation.test.ts

@@ -256,56 +256,6 @@ body`;
     });
   });
 
-  describe('MULTI_FRONTMATTER (#2743)', () => {
-    test('stacked frontmatter immediately after the close fence', () => {
-      const md = `${fence}\ntitle: outer\n${fence}\n${fence}\ntitle: inner\ntype: concept\n${fence}\n\nbody`;
-      const parsed = parseMarkdown(md, undefined, { validate: true });
-      expect(parsed.errors!.map(e => e.code)).toContain('MULTI_FRONTMATTER');
-    });
-
-    test('stacked frontmatter with a blank line between blocks (serializeMarkdown shape)', () => {
-      const md = `${fence}\ntitle: outer\n${fence}\n\n${fence}\ntitle: inner\n${fence}\n\nbody`;
-      const parsed = parseMarkdown(md, undefined, { validate: true });
-      expect(parsed.errors!.map(e => e.code)).toContain('MULTI_FRONTMATTER');
-    });
-
-    test('horizontal rules in the body are NOT flagged', () => {
-      const md = `${fence}\ntitle: ok\n${fence}\n\nsome prose\n\n${fence}\n\nmore prose\n\n${fence}\n\nend`;
-      const parsed = parseMarkdown(md, undefined, { validate: true });
-      expect(parsed.errors!.map(e => e.code)).not.toContain('MULTI_FRONTMATTER');
-    });
-
-    test('hrule pair at body start without YAML-shaped lines is NOT flagged', () => {
-      const md = `${fence}\ntitle: ok\n${fence}\n\n${fence}\n\nplain prose between rules\n\n${fence}\n\nend`;
-      const parsed = parseMarkdown(md, undefined, { validate: true });
-      expect(parsed.errors!.map(e => e.code)).not.toContain('MULTI_FRONTMATTER');
-    });
-
-    test('timeline sentinel form is NOT flagged', () => {
-      const md = `${fence}\ntitle: ok\n${fence}\n\nbody text\n\n${fence}\n\n## Timeline\n- 2024-01-01: thing`;
-      const parsed = parseMarkdown(md, undefined, { validate: true });
-      expect(parsed.errors!.map(e => e.code)).not.toContain('MULTI_FRONTMATTER');
-    });
-
-    test('body hrule + colon-prefixed prose (`Note: …`) mixed with plain lines is NOT flagged', () => {
-      const md = `${fence}\ntitle: ok\ntype: concept\n${fence}\n\n${fence}\n\nNote: remember to follow up\n\nlots of plain prose here\n\n${fence}\n\nmore prose`;
-      const parsed = parseMarkdown(md, undefined, { validate: true });
-      expect(parsed.errors!.map(e => e.code)).not.toContain('MULTI_FRONTMATTER');
-    });
-
-    test('fence pairing stops at the first non-frontmatter line (no far-fence pairing across prose)', () => {
-      const md = `${fence}\ntitle: ok\n${fence}\n\n${fence}\n\n${'plain prose line\n'.repeat(40)}TODO: fix the widget\n${'more prose\n'.repeat(40)}${fence}\nend`;
-      const parsed = parseMarkdown(md, undefined, { validate: true });
-      expect(parsed.errors!.map(e => e.code)).not.toContain('MULTI_FRONTMATTER');
-    });
-
-    test('stacked block with list-valued keys is still flagged', () => {
-      const md = `${fence}\ntitle: outer\n${fence}\n\n${fence}\ntitle: inner\ntags:\n  - a\n  - b\n${fence}\n\nbody`;
-      const parsed = parseMarkdown(md, undefined, { validate: true });
-      expect(parsed.errors!.map(e => e.code)).toContain('MULTI_FRONTMATTER');
-    });
-  });
-
   test('error.line is set for line-bearing errors', () => {
     const md = `${fence}\ntype: concept\n${fence}\n# Heading inline\n\nbody\x00drop`;
     const parsed = parseMarkdown(md, undefined, { validate: true });

test/operations-schema-pack.test.ts

@@ -149,6 +149,9 @@ describe('list_schema_packs', () => {
       seedPack('mine');
       const result = await operationsByName.list_schema_packs!.handler(ctxOf(), {}) as { bundled: string[]; installed: string[] };
       expect(result.bundled).toContain('gbrain-base');
+      expect(result.bundled).toContain('gbrain-recommended');
+      expect(result.bundled).toContain('gbrain-base-v2');
+      expect(result.bundled).toContain('gbrain-investor');
       expect(result.installed).toContain('mine');
     });
   });

test/schema-cli.test.ts

@@ -64,11 +64,14 @@ describe('gbrain schema CLI (Phase C)', () => {
     expect(r.stdout + r.stderr).toMatch(/schema|active|list|show|validate|use/i);
   });
 
-  test('schema list shows gbrain-base bundled', () => {
+  test('schema list shows all bundled packs', () => {
     const r = gbrain(['schema', 'list']);
     expect(r.code).toBe(0);
     expect(r.stdout).toContain('Bundled packs:');
     expect(r.stdout).toContain('gbrain-base');
+    expect(r.stdout).toContain('gbrain-recommended');
+    expect(r.stdout).toContain('gbrain-base-v2');
+    expect(r.stdout).toContain('gbrain-investor');
   });
 
   test('schema show gbrain-base prints manifest details', () => {
@@ -97,6 +100,40 @@ describe('gbrain schema CLI (Phase C)', () => {
     expect(r.stdout).toContain('valid manifest');
   });
 
+  test('schema show/validate exposes bundled gbrain-recommended', () => {
+    const show = gbrain(['schema', 'show', 'gbrain-recommended']);
+    expect(show.code).toBe(0);
+    expect(show.stdout).toContain('gbrain-recommended v1.0.0');
+    expect(show.stdout).toContain('Page types (');
+    expect(show.stdout).toContain('meeting :: temporal');
+
+    const validate = gbrain(['schema', 'validate', 'gbrain-recommended']);
+    expect(validate.code).toBe(0);
+    expect(validate.stdout).toContain('valid manifest');
+  });
+
+  test('schema show exposes bundled gbrain-base-v2 successor pack', () => {
+    const r = gbrain(['schema', 'show', 'gbrain-base-v2']);
+    expect(r.code).toBe(0);
+    expect(r.stdout).toContain('gbrain-base-v2 v1.0.0');
+    expect(r.stdout).toContain('Page types (');
+    expect(r.stdout).toContain('Link verbs (14)');
+  });
+
+  test('schema active loads configured gbrain-recommended with real types', () => {
+    const home = mkdtempSync(join(tmpdir(), 'gbrain-schema-active-recommended-'));
+    try {
+      mkdirSync(join(home, '.gbrain'), { recursive: true });
+      writeFileSync(join(home, '.gbrain', 'config.json'), JSON.stringify({ schema_pack: 'gbrain-recommended' }), 'utf-8');
+      const r = gbrain(['schema', 'active'], { GBRAIN_HOME: home });
+      expect(r.code).toBe(0);
+      expect(r.stdout).toContain('Active pack: gbrain-recommended');
+      expect(r.stdout).not.toContain('Page types: 0');
+    } finally {
+      rmSync(home, { recursive: true, force: true });
+    }
+  });
+
   test('schema active reports default resolution', () => {
     const r = gbrain(['schema', 'active']);
     expect(r.code).toBe(0);

test/schema-pack-loader.test.ts

@@ -345,6 +345,34 @@ describe('YAML mini-parser', () => {
     expect(result.types[1].weight).toBe(2);
   });
 
+  test('parses block scalar without swallowing following keys', () => {
+    const yaml = `name: blocky
+description: |
+  First line.
+  Second line.
+page_types:
+  - name: meeting
+    primitive: temporal
+    path_prefixes:
+      - meetings/
+    aliases: []
+    extractable: true
+    expert_routing: false`;
+    const result = parseYamlMini(yaml) as { description: string; page_types: Array<Record<string, unknown>> };
+    expect(result.description).toBe('First line.\nSecond line.');
+    expect(result.page_types).toHaveLength(1);
+    expect(result.page_types[0].name).toBe('meeting');
+  });
+
+  test('block scalar keeps # as literal content, not a comment', () => {
+    const yaml = `description: |
+  See issue #2029 for context.
+name: hashy`;
+    const result = parseYamlMini(yaml) as Record<string, unknown>;
+    expect(result.description).toBe('See issue #2029 for context.');
+    expect(result.name).toBe('hashy');
+  });
+
   test('strips comments', () => {
     const result = parseYamlMini('# top comment\nname: value # inline comment') as Record<string, unknown>;
     expect(result.name).toBe('value');
@@ -374,6 +402,27 @@ extends: null`;
     const pack = loadPackFromString(json, 'fixture.json');
     expect(pack.name).toBe('json-pack');
   });
+
+  test('loads block-scalar pack descriptions without losing page types', () => {
+    const pack = loadPackFromString(`api_version: gbrain-schema-pack-v1
+name: recommended-fixture
+version: 1.0.0
+extends: gbrain-base
+description: |
+  Operational starter pack.
+page_types:
+  - name: meeting
+    primitive: temporal
+    path_prefixes:
+      - meetings/
+    aliases: []
+    extractable: true
+    expert_routing: false
+link_types: []`, 'fixture.yaml');
+    expect(pack.name).toBe('recommended-fixture');
+    expect(pack.extends).toBe('gbrain-base');
+    expect(pack.page_types.map((t) => t.name)).toContain('meeting');
+  });
 });
 
 describe('ReDoS guard', () => {

test/schema-pack-mutate.test.ts

@@ -103,7 +103,10 @@ describe('locateMutablePackFile — bundled guard', () => {
     expect(BUNDLED_PACK_NAMES.has('gbrain-recommended')).toBe(true);
     // v0.42 (T22): gbrain-base-v2 joins the bundled set.
     expect(BUNDLED_PACK_NAMES.has('gbrain-base-v2')).toBe(true);
-    expect(BUNDLED_PACK_NAMES.size).toBe(3);
+    // Derived from the single bundled registry — the lens packs (creator,
+    // investor, engineer, everything) are read-only too.
+    expect(BUNDLED_PACK_NAMES.has('gbrain-investor')).toBe(true);
+    expect(BUNDLED_PACK_NAMES.size).toBe(7);
   });
 
   it('rejects gbrain-base-v2 with PACK_READONLY (bundled guard)', () => {