v0.42.76.0 fix(upgrade,security,cli): strict flag validation, bootstrap-wedge class kill, federated chunk scope (#3902)

* fix(schema): bootstrap timeline_entries.event_page_id forward reference — un-wedge pre-v121 upgrades (#2626 #2594 #2579 #2537 #2536)

v0.42.56.0 (Chronicle, migration v121) added timeline_entries.event_page_id
and two partial indexes in the embedded schema blobs without extending
applyForwardReferenceBootstrap — any brain whose timeline_entries predates
v121 wedged initSchema at blob replay ("column event_page_id does not
exist") before runMigrations could apply v121, with no in-band recovery.

- Add the timeline_entries.event_page_id probe + column-only ALTER to
  applyForwardReferenceBootstrap in BOTH engines; FK + partial indexes land
  via the idempotent v121 / blob replay afterwards. Stays in the always-run
  bootstrap (never a migration hook — those skip oddly-stamped brains).
- REQUIRED_BOOTSTRAP_COVERAGE entry + strip blocks in both runtime tests.
- e2e: pre-v121 rewind → full initSchema converges (indexes re-created);
  wedged-brain recovery — a brain that already FAILED the upgrade attempt
  converges on retry with full final shape (column + FK + both partial
  indexes) and no ledger residue.

Absorbs PR #2548 (@chetan-guevara) and the e2e test from PR #2623
(@colinagent) — thank you both.

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

* test(schema): coverage guard cross-references migration-added columns — close the scan hole that shipped the v121 wedge

The A2 static check treated a column as covered when the current CREATE
TABLE body declared it. But a column that is BOTH in the blob's CREATE
TABLE AND added by a migration is a forward reference by definition — on
pre-existing tables CREATE TABLE IF NOT EXISTS no-ops and the blob's
CREATE INDEX crashes initSchema before runMigrations can help. That mask
is exactly how timeline_entries.event_page_id passed the guard while
wedging every pre-v121 brain.

- buildIndexRefCoveragePredicate: migration-added columns (from
  extractAddedColumnsFromMigrations over the MIGRATIONS array) require a
  bootstrap ALTER; CREATE TABLE presence no longer counts for them.
- Unit test pins the v121 regression shape red/green with synthetic inputs;
  the A2 test pins the incident triple directly (migration-added +
  blob-indexed + bootstrap-covered).
- The strengthened predicate immediately surfaced two more latent wedges of
  the same class: minion_jobs.timeout_at + minion_jobs.idempotency_key
  (migration v7, blob-indexed, unprobed). Added probes in both engines +
  coverage entries + runtime strip blocks.

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

* fix(security): serve --http hides the generated admin token from non-TTY output by default (#2624)

Generated admin bootstrap tokens printed into container/log-aggregator
stdout on every headless start. shouldSuppressBootstrapPrint now defaults
to hidden unless stderr is an interactive TTY; env-sourced tokens are
never printed; --print-admin-token is the explicit escape hatch for
capturing the value on a trusted non-TTY start; --suppress-bootstrap-token
still overrides everything. Unit-tested across all five postures.

Absorbs PR #2625 (@irresi) — thank you.

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

* fix(security): legacy bearer tokens honor permissions.takes_holders over serve --http (#2529)

GBrainOAuthProvider.verifyAccessToken never returned takesHoldersAllowList,
so the serve --http dispatch site always fell back to ['world'] — remote
MCP callers with an operator-configured takes_holders grant saw only
public takes. The legacy branch now extracts permissions.takes_holders
exactly like src/mcp/http-transport.ts (fail-safe ['world'] default,
non-string entries dropped, malformed permissions JSON fails closed
without throwing), and AuthInfo carries the field as a typed contract.

OAuth-registered clients have no takes_holders storage on oauth_clients;
that lane is design work tracked in TODOS (column migration + DCR/
registration surface), not part of this hotfix.

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

* fix(security): get_chunks honors the federated source grant + stops shipping embedding vectors (#2555, getChunks half of #2544)

The get_chunks op still used the pre-#2200 scalar pattern
(ctx.sourceId ? {sourceId} : {}) and engine.getChunks had no sourceIds[]
support — a federated client that could read a page via get_page got []
from get_chunks. The op now routes through sourceScopeOpts (canonical
ladder: federated array > scalar floor > nothing) and both engines gain
the getPage-style sourceIds[] precedence branch; the unset-opts 'default'
floor is preserved for local callers (importCodeFile contract).

While in the function: SELECT cc.* pulled every embedding vector over the
wire per chunk only for rowToChunk to discard them — replaced with the
explicit non-vector column list in both engines (the getChunks half of
#2544; the per-put_page getAllSlugs half is tracked separately).

getChunksWithEmbeddings stays scalar-only by design (engine-internal,
zero remote-reachable callers — documented at the interface).

Tests: op-level federated repro + isolation + default-floor bleed guard
(PGLite), engine precedence + Chunk-shape pin, and a DATABASE_URL-gated
engine-parity test covering all three scope shapes.

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

* fix(auth): /admin/api/register-client accepts source + federatedRead bindings (#2143 enabler)

The HTTP register endpoint hardcoded source_id='default' and
federated_read=undefined — only the CLI could mint a client bound to a
non-default source, so HTTP-registered MCP clients wrote into 'default'
regardless of intent. The endpoint now accepts optional source /
federatedRead body fields, validated via assertValidSourceId with a
structured 400 on bad input; omitting both preserves the historical
default. The admin-UI form layer is a tracked follow-up.

Absorbs PR #2016 — thank you.

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

* fix(scope,calibration): think reads over MCP; source-scoped takes reads; calibration CLI reachability + model resolution (#2078-class #2451)

- think op → scope:'read' for OAuth/MCP clients: the handler already forces
  save/take off for remote callers before persistence, so a read-scoped
  token can think without a write grant; local CLI persistence unchanged.
  Scope-annotation test carries an explicit remote-gated allowlist.
- takes_list / takes_search / takes_scorecard / takes_calibration route
  through sourceScopeOpts (the #2200 class on the takes read lane) with
  engine support in BOTH engines + tests.
- 'calibration' added to CLI_ONLY (the command was registered but
  unreachable — dispatch-gap class) and calibration_profile/voice-gate
  resolve models through the canonical gateway tier resolver instead of
  bare ids that parseModelId rejects.
- BigInt-safe local-op output normalization (bigintToStringReplacer,
  postgres.js wire parity) — first half of the #2450 fix; the
  formatResult default case lands with the cli-output commit.

Absorbs PR #2598 (@colinagent) and PR #2452 (@spinsirr) — thank you both.

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

* fix(cli): output correctness — BigInt-safe rendering, search --json, files bigint, and 5 unreachable commands (#2450 #2527 #2042 #2035-class)

- normalizeLocalResult wraps the local-op output round-trip with the
  bigint→string replacer (postgres.js wire parity; a bare stringify THROWS
  on BIGSERIAL keys); formatResult's default renderer gets the same
  replacer so nothing upstream can crash it.
- search/query --json: CLI-local formatter flag threaded through the shared
  formatter — stdout is a parseable result array, never human text on the
  --json path (the #2042 residual).
- file_list normalizes size_bytes (Postgres BIGINT → Number) so MCP
  serialization and the CLI KB math survive; null preserved.
- NEW dispatch-gap guard: every handleCliOnly top-level case label must be
  reachable via CLI_ONLY. It immediately caught FIVE live unreachable
  commands: pages, backfill, reconcile-links, notability-eval (added to
  CLI_ONLY), and the documented 'gbrain search modes|stats|tune' dashboards
  (pre-fix, 'search modes' silently keyword-searched the word "modes") —
  now routed via a pre-dispatch subcommand gate. 'whoknows' stays on its
  op-alias route (collision guard); tracked with PR #2509.

Absorbs PR #2494 and PR #2531 (@javieraldape) and adapts PR #472
(@vinsew) — thank you.

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

* fix(db): updateSourceConfig survives mixed-array config rows + repair/doctor cover the subagent jsonb columns (#2251)

The array-coercion branch called jsonb_each(elem) bare — a mixed array
(e.g. '["x", {"last_full_cycle_at": ...}]') threw 'cannot call
jsonb_each on a non-object' DURING row production, permanently failing
every subsequent updateSourceConfig (last_full_cycle_at could never be
written again). Non-object elements are now neutralized inline via a
CASE-guarded jsonb_each; the row self-heals to a flat object on the next
write, object elements' keys recovered. Pinned ungated on PGLite (real
Postgres semantics) and via a DATABASE_URL-gated e2e on the real engine.

repair-jsonb + doctor's jsonb_integrity check extend from 5 to 8 columns
(subagent_messages.content_blocks, subagent_tool_executions.input/output
— historical damage rows from the pre-v0.42.53.0 positional double-encode;
the write paths themselves were fixed in #2375) with a to_regclass skip
for brains predating those tables.

Adapts the repair/doctor extension from PR #597 (@vinsew) — thank you.

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

* fix(cli): dry-run honesty — strict unknown-flag rejection CLI-wide + unify-types worker defaults to dry-run (#2185 #1575)

#2185: 'gbrain init --migrate-only --dry-run' applied REAL migrations —
flags are read ad hoc (args.includes) so anything a handler doesn't look
for was silently ignored, including intent-bearing safety flags. The CLI
now validates every flag pre-dispatch and pre-engine:

- Op commands validate against the operation contract (op.params +
  CLI-local --json/--explain), mirroring parseOpArgs so flag values that
  begin with '--' are never misread. parseOpArgs also gains the
  --key=value inline form (previously parsed as a junk key that consumed
  the NEXT token).
- CLI_ONLY commands validate against a GENERATED per-command registry
  (scripts/generate-flag-registry.ts scans each command's case block +
  imported modules + one level of relative imports; deliberately
  over-inclusive so a missed flag can't break a working invocation).
  Committed as src/core/cli-flag-registry.generated.ts;
  'bun run build:flag-registry' regenerates.
- Passthrough by construction: everything after '--', plus call / config /
  'jobs submit' payloads (handler-defined params are their contract).
- Guards: sweep test (every command × nonsense flag → error), acceptance
  tests (real flags, --no- negation, = form, -- passthrough), drift guard
  (every CLI_ONLY member has an entry), freshness guard (committed
  registry == fresh generator run), subprocess smokes incl. the literal
  #2185 repro failing loud with zero engine work.

BREAKING: scripts passing stray flags now fail loud with
"Unknown flag --x for 'gbrain <cmd>'" — that is the point.

#1575: the unify-types worker registration passed apply ?? true while the
handler documents 'Default false (dry-run)' — the canonical operator
invocation destructively retyped 25K+ pages by default. Now ?? false with
a structural test; explicit --params '{"apply":true}' is the only way to
mutate.

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

* docs(todos): file fix-wave 1 follow-ups (OAuth takes_holders design, parseFlags end-state, whoknows routing, #2544 half, #1558 UI, #2536 diagnostics)

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

* fix(test): memory-safe unit runner — adaptive concurrency + serial OOM rescue pass

A default run (4 shards × 4 intra-shard files) holds up to 16 concurrent
PGLite WASM instances (~1.5GB each). With sibling Conductor workspaces
running their own suites, PGLite connect failed with 'Out of memory'
across every shard at once — 369 phantom test failures on a healthy
branch, indistinguishable from real breakage at a glance.

Two default-on layers in scripts/run-unit-parallel.sh:
1. Memory-aware sizing: total concurrency is capped to available memory
   (vm_stat on macOS, MemAvailable on Linux) at GBRAIN_TEST_MEM_PER_FILE_MB
   (default 1536) per concurrent file, shedding shards before intra-shard
   width. Quiet machines are unaffected (banner: mem-ok); pressured ones
   degrade instead of OOMing (banner: mem-adapted AxB→CxD).
2. Serial OOM rescue: failures whose shard log carries the WASM
   out-of-memory signature are re-run at --max-concurrency 1 after the
   fan-out drains. Phantoms pass serially → run goes green with an
   oom_rescued note and the failure blocks marked superseded; real
   failures fail again and stay red. Plain assertion failures never match
   the signature and never enter the rescue lane (existing exit-code and
   failure-log contract tests unchanged).

Escape hatches: GBRAIN_TEST_NO_MEM_ADAPT=1, GBRAIN_TEST_NO_OOM_FALLBACK=1.
Tests: OOM-once fixture rescued to exit 0; kill-switch stays red; banner
advertises the sizing verdict. Documented in docs/TESTING.md.

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

* fix(test,cli): merge-seam repairs — shard timeout for the tripled suite, init flag-error contract, think scope exemption

Three post-merge repairs surfaced by the first full-suite run:
- Shard timeout 1500s -> 3000s: the suite roughly tripled since the cap was
  sized (~3900 -> 11k+ tests; PGLite inits replay 120 migrations, was 92).
  Two shards were killed mid-progress at 1500s.
- The #2185 pre-dispatch validator now emits the same error contract as
  init.ts's in-handler check it preempts: lowercase 'unknown flag' on
  stderr + structured {status:'error', reason:'invalid_flag'} on stdout
  for --json callers (pinned by test/init-migrate-only.test.ts).
- test/operations-trust-boundary.test.ts gets the same documented
  remote-gated allowlist for think's read scope (#2598) that
  test/oauth.test.ts already carries.

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

* fix(test): rescue lane also covers externally-killed shards (sibling-workspace pkill / memory jetsam)

Second phantom class observed on a multi-workspace Conductor machine:
3 shards SIGTERM'd + 1 SIGKILL'd at ~700s under a 3000s cap, all
mid-progress — an external killer, not a wedge. The dead shards then
poisoned the serial pass (lock/state residue → 18 more phantoms), and
every one of the 18 passed standalone.

The runner now stamps per-shard start/end epochs; a shard dying on
143/137 before 80% of SHARD_TIMEOUT is classified externally-killed and
its file list joins the serial rescue queue (real wedges die AT the cap
and stay red). Serial-pass failures that occur while any shard was
externally killed are treated as suspect residue and rescued too.
Structural tests pin the detector, threshold, and routing.

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

* fix(auth): keep tokenEndpointAuthMethod terminal in the register-client destructure (PKCE structural contract)

The #2016 absorb appended source/federatedRead after
tokenEndpointAuthMethod; test/fix-wave-structural.test.ts pins
tokenEndpointAuthMethod as the final destructured field (v0.36.1.x #1077
PKCE regression contract). The added fields move into the regex's
optional-middle slot.

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

* fix(test): re-apply the #2598 remote-gated scope exemption to master's oauth scope-annotation test

Taking master's v0.42.74.0 oauth.test.ts (its #2529 implementation) dropped
the think read-scope allowlist that PR #2598 carries; re-applied to match
test/operations-trust-boundary.test.ts.

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

* fix(review): pre-landing review batch — CLI-local flag acceptance, json= coherence, re-landed getChunks trim, payload-aware jsonb repair, rescue-lane tightening

Ship Step 9 findings (checklist pass + 4 specialists), all verified before fixing:
- CRITICAL: the #2185 validator rejected --source/--dry-run on op commands
  (makeContext CLI-locals consumed outside the op contract) — 'gbrain search
  "x" --source y' exited 1. Exempted with parser-mirroring value consumption
  + unit/subprocess tests incl. global-flag acceptance.
- CRITICAL: --json=<v> diverged between validator (accepted) and parseOpArgs
  (junk-key path consumed the NEXT token, corrupting positionals). Parser now
  handles --json=true|false; =-forms of bare-only CLI-locals reject loud.
  parseOpArgs inline-= suite added (regression rule).
- CRITICAL: the master merge silently restored SELECT cc.* in both engines'
  getChunks while docs claimed the #2544 trim. Re-landed the explicit
  non-vector column list + a source-level structural pin so a merge can't
  silently undo it again.
- repair-jsonb/doctor: the subagent columns legitimately hold jsonb string
  scalars (persistToolExec binds pre-serialized strings) — unconditional
  unwrap would abort the repair run or corrupt legit values. jsonPayloadOnly
  predicate (JSON-container content only) on those 3 targets, mirrored in
  doctor + parameterized to_regclass + behavioral test (damage flagged,
  legit string ignored, absent table skipped).
- runner rescue-lane tightening: serial failures rescue-eligible only with
  their own OOM signature or after an external shard kill (residue), never
  because a sibling shard OOM'd — flaky serial tests stay red. Rescue passes
  no longer double-count into TOTAL_PASS; shard timeout scales when
  mem-adaptation sheds shards; negative-path tests (mixed run stays red,
  deterministic OOM-signature failure stays red).
- fail-closed remote spelling at 2 forward sites (ctx.remote !== false per
  the CLAUDE.md invariant); registry generator drops template-literal flag
  prefixes; real-PG e2es for the v121 + minion_jobs wedge classes; stale
  comments corrected.

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

* chore: regenerate flag registry after master merge (#3864 added extract help flags)

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

* fix(review): red-team batch — dispatch-order validation, real --dry-run boolean, rescue-lane timeout/isolation/cap, parseable-payload repair gate

Red-team pass (post-specialist) findings, all verified before fixing:
- CRITICAL: validateCommandFlags checked the op lane before CLI_ONLY while
  dispatch runs CLI_ONLY first — dual-lane commands (think/salience/
  anomalies) were validated against the WRONG contract, rejecting documented
  invocations ('salience --kind entity'). Lane order now mirrors dispatch.
- CRITICAL: --dry-run was blessed as legal on op commands but parseOpArgs
  never SET it (trailing → nothing → ctx.dryRun false → the REAL destructive
  action ran; leading → consumed the next token). Now a CLI-local boolean
  exactly like --json, with --dry-run=false support and regression tests.
- CRITICAL: the rescue lane ran bun test WITHOUT --timeout=60000 (bun default
  5s) — PGLite phantoms re-failed on timeout and were mislabeled 'confirmed
  real'. Both rescue invocations now mirror the shard flags; serial files
  re-run one process per file (run-serial-tests.sh isolation contract);
  rescue wallclock capped at 2x the shard timeout.
- CRITICAL: the jsonPayloadOnly probe matched container-LOOKING invalid JSON
  ('[INFO] fetch complete') whose repair cast would throw and abort the run
  mid-loop. Predicate now gates on pg_input_is_valid (PG16+, same floor as
  the existing IS JSON usage) + per-target catch records and continues;
  doctor mirrors; behavioral test covers the lookalike row.
- Registry generator bounded at handleCliOnly's closing brace (the LAST case
  block absorbed ~100 junk flags from the rest of cli.ts, neutering strict
  validation for it); uppercase flag typos reject loudly in both lanes
  (handlers are lowercase-sensitive); --json=true spelling gets the
  structured invalid_flag envelope; get_chunks __all__ narrowing filed as a
  Wave 3 TODO.

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

* fix(engines): getChunks trimmed SELECT must carry modality (codex P1-B)

The #2544 egress trim replaced SELECT cc.* with an explicit column list but
omitted cc.modality — every rowToChunk field except the vector must survive
the trim, or the embed round-trip (getChunks -> upsertChunks) rewrites image
chunks as text. Both engines; the structural pin now iterates the full
rowToChunk field list instead of spot-checking.

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

* fix(cli): safety flags require consumption evidence in the flag registry (codex P1-A)

upgrade.ts prints a help hint naming another command's --dry-run; that
literal is depth-0 text for post-upgrade, so the generator allowlisted
--dry-run there — recreating the exact #2185 repro this wave kills
(post-upgrade --dry-run accepted, ignored, migrations run for real).
Safety flags now need a tight-quoted standalone literal (an args read
like has('--dry-run')) before the registry grants them; prose bleed
embeds the flag inside a longer string and never qualifies. Regenerated
registry drops --dry-run from post-upgrade, keeps genuine consumers.

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

* v0.42.76.0 fix(upgrade,security,cli): strict flag validation, bootstrap-wedge class kill, federated chunk scope

Version bump + CHANGELOG for the fix wave: CLI-wide unknown-flag
rejection with a generated per-command registry (#2185, #1575 class),
minion_jobs bootstrap probes + migration-aware coverage guard (v121
wedge class), get_chunks federated scope + egress trim (#2555, half of
#2544), think read-scope over MCP (#2598), register-client source
bindings (#2016, #2143 enabler), repair-jsonb/doctor subagent columns
with a parse-validated damage predicate, memory-safe unit-test runner.

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

* docs: update project documentation for v0.42.76.0

CONTRIBUTING.md: test-runner claims match the memory-safe 4-shard default
(was 8-shard) and the CLI-only command recipe now includes the
build:flag-registry regen step. KEY_FILES.md: repair-jsonb entry updated
to the 8-column parse-gated current state; new entries for the strict
flag-validation subsystem and src/core/source-id.ts; operations/engine/
serve-http entries updated for get_chunks scope ladder + trimmed SELECT
and the register-client HTTP source bindings.

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

* docs: apply doc-review fixes for v0.42.76.0

Cross-model doc review caught stragglers: docs/TESTING.md still said
8-shard in the file taxonomy, carried a two-generations-stale shard
timeout default (600s -> 3000s), and didn't name the new
run-unit-parallel regression test or the remaining runner knobs;
CONTRIBUTING.md's fast-loop file count predated the tripled suite
(92+ -> 1000+); test-count claims unified at 3700+; the
CLIENT_FENCED_WRITE_OPS comment in operations.ts still described
think as scope write; KEY_FILES names the exported findUnknownFlag.

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

* fix(test): rescue lane survives CI — strip ::group:: prefixes, satisfy the bun-test-timeout guard

Two CI-only breaks from the master merge: (1) under GITHUB_ACTIONS the
shard wraps file sections as ::group::path.test.ts, so the rescue pass
extracted literal ::group:: non-paths that matched zero test files —
failing_files_in_log now strips the prefix; (2) master's new
check-bun-test-timeout guard greps for bare 'bun test' and tripped on
run_rescue's comment text (the invocations themselves carry
--timeout=60000) — comment reworded.

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

* fix(test): shard-mechanics tests disable mem-adaptation — CI's 7GB runner collapsed explicit 2 shards to 1

The runner deliberately adapts even explicit --shards to available memory
(GBRAIN_TEST_NO_MEM_ADAPT=1 is the escape hatch); on GitHub's ~7GB runners
that collapsed the tests' 2-shard sandbox runs to 1 shard, breaking every
'shard 1/2:' expectation while passing locally. The tests pin shard
MECHANICS with tiny synthetic files, so they now set the escape hatch;
the one test that checks the mem banner overrides it back on.

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

---------

Co-authored-by: Claude Fable 5 <noreply@anthropic.com>

docs/TESTING.md

@@ -11,7 +11,7 @@ Seven test command tiers, each with a clear scope:
 
 | Command | What it runs | Wallclock | When to use |
 |---|---|---|---|
-| `bun run test` | Parallel unit-test fast loop. 8-shard fan-out via `scripts/run-unit-parallel.sh`, then a serial pass over `*.serial.test.ts`. Excludes `*.slow.test.ts` and `test/e2e/*`. No pre-checks, no typecheck. | ~85s on a Mac dev box (3650+ tests) | Inner edit loop. Default. |
+| `bun run test` | Parallel unit-test fast loop. Up-to-4-shard fan-out via `scripts/run-unit-parallel.sh` (min(CPUs, 4)), then a serial pass over `*.serial.test.ts`. Excludes `*.slow.test.ts` and `test/e2e/*`. No pre-checks, no typecheck. Memory-safe by default: total concurrency (shards × intra-shard files) is capped to available memory at `GBRAIN_TEST_MEM_PER_FILE_MB` (default 1536 — a PGLite WASM instance) per concurrent file, and two phantom-failure classes are automatically re-run serially (the rescue pass): failures carrying the WASM out-of-memory signature, and shards killed externally (SIGTERM/SIGKILL well before the shard timeout — sibling workspaces' process cleanup, memory jetsam). Phantoms pass serially and the run goes green with an `oom_rescued` note; real failures fail again serially and stay red. Knobs: `GBRAIN_TEST_NO_MEM_ADAPT=1`, `GBRAIN_TEST_NO_OOM_FALLBACK=1`, `GBRAIN_TEST_MAX_CONCURRENCY` (intra-shard, default 4), `GBRAIN_TEST_SHARD_TIMEOUT` / `GBRAIN_TEST_SHARD_KILL_AFTER`, plus `--shards N` / `--max-concurrency N` / `--dry-run` script args. | ~85s on a Mac dev box (3700+ tests) | Inner edit loop. Default. |
 | `bun run verify` | CI's authoritative pre-test gate set, fanned out in parallel by `scripts/run-verify-parallel.sh`: the full `check:*` battery (~30 checks — privacy, jsonb, progress, source-id, test-isolation, wasm, …) plus `bun run typecheck`. The `CHECKS` array in that script is the single source of truth — CI literally calls `bun run verify` in a dedicated job. | ~16s (parallel; typecheck dominates) | Before pushing; before `/ship`. |
 | `bun run test:full` | `verify && bun run test && bun run test:slow && [smart e2e]`. The local equivalent of "everything CI runs." Smart e2e: runs e2e only when `DATABASE_URL` is set; else loud skip notice to stderr. | ~3-5min depending on slow + e2e | Pre-merge sanity, before opening a PR. |
 | `bun run test:slow` | Just the `*.slow.test.ts` set (intentional cold-path correctness checks). | seconds-to-minutes | When touching slow-path code. |
@@ -50,7 +50,7 @@ there even though they pass on Linux and macOS.
 - **CI matrix** (`.github/workflows/test.yml`) runs `scripts/test-shard.sh` across 10 matrix shards partitioned by weight-aware LPT bin-packing (`scripts/sharding.ts`) and INCLUDES `*.slow.test.ts` (the two outlier slow files run as dedicated jobs alongside the matrix). CI EXCLUDES `*.serial.test.ts` from the shards and runs them in a dedicated job via `bun run test:serial`, one bun process per file — keeping serial files out of the shard processes is what preserves the `mock.module` quarantine (a top-level mock in one file leaks into every other file sharing its process). `bun run verify` gets its own job too. CI is the ground truth for "did everything pass."
 - **Local fast loop** (`scripts/run-unit-shard.sh` via the parallel wrapper) uses round-robin-by-index sharding and EXCLUDES `*.slow.test.ts` AND `*.serial.test.ts`. Local trades coverage for inner-loop speed; CI catches what local skips.
 
-This divergence is intentional. Don't try to make them equal — the two scripts deliberately solve different problems. The regression test at `test/scripts/run-unit-shard.test.ts` pins what the local fast loop should and shouldn't include.
+This divergence is intentional. Don't try to make them equal — the two scripts deliberately solve different problems. The regression test at `test/scripts/run-unit-shard.test.ts` pins what the local fast loop should and shouldn't include; `test/scripts/run-unit-parallel.test.ts` pins the wrapper's memory-adaptive concurrency and the OOM/external-kill serial rescue pass.
 
 ### Failure-first logging
 
@@ -61,11 +61,11 @@ When `bun run test` finds any failure, the wrapper:
 3. Writes a one-line-per-shard summary to `.context/test-summary.txt` (`shard N/M: pass=X fail=Y skip=Z rc=W`).
 4. Exits non-zero. Empty failure log + non-zero exit = infrastructure problem (wedged shard, killed child); the banner says so.
 
-If a shard wedges (per-shard `GBRAIN_TEST_SHARD_TIMEOUT` cap, default 600s), the wrapper writes `--- shard N: WEDGED after ${SHARD_TIMEOUT}s ---` to the failure log, includes the last 50 lines of the shard log, and proceeds with other shards' results.
+If a shard wedges (per-shard `GBRAIN_TEST_SHARD_TIMEOUT` cap, default 3000s; `GBRAIN_TEST_SHARD_KILL_AFTER` grace after TERM before KILL, default 30s), the wrapper writes `--- shard N: WEDGED after ${SHARD_TIMEOUT}s ---` to the failure log, includes the last 50 lines of the shard log, and proceeds with other shards' results.
 
 ### File taxonomy
 
-- `*.test.ts` → fast loop (parallel 8-shard fan-out).
+- `*.test.ts` → fast loop (parallel up-to-4-shard fan-out, memory-adaptive).
 - `*.slow.test.ts` → run via `bun run test:slow` only (intentional cold-path tests; would dominate the fast loop's wallclock).
 - `*.serial.test.ts` → run via `bun run test:serial` after the parallel pass completes; one bun process per file (`--max-concurrency=1` within a shared process is not enough — the module registry still leaks `mock.module`). Quarantine for tests that share file-wide state and race when run alongside other files in the same `bun test` process. Several dozen files, discovered by the `*.serial.test.ts` glob — no list to maintain. Typical residents: `mock.module(...)` users (top-level mocks leak across files in a shard process, e.g. `test/embed.serial.test.ts`), env-coupled files (e.g. `test/brain-registry.serial.test.ts`), and process-lifecycle suites that assert on `process.exitCode` (e.g. `test/pglite-engine-disconnect.serial.test.ts`). **Do not put the parallelism back on a serial file unless you've fixed the contention root cause** (it just re-introduces the flake).
 - `test/e2e/*.test.ts` → real-Postgres E2E. Skipped when `DATABASE_URL` is unset.

docs/architecture/thin-client.md

@@ -64,7 +64,7 @@ Key files:
   thin-client routing branches. These commands bypass the operation-layer
   dispatch in cli.ts (call `engine.foo()` directly), so each gets its own
   `if (isThinClient(cfg)) { callRemoteTool(...) }` branch that maps CLI flags
-  to op params. `think` is a special case: the server's `think` op
-  intentionally disables `--save`/`--take` for remote callers
-  (operations.ts:1103-1135 trust-boundary gate); thin-client `think` warns
-  loudly when those flags are set.
+  to op params. `think` is a special case: the server's `think` op is
+  read-scoped for OAuth/MCP and intentionally disables `--save`/`--take` for
+  remote callers in its trust-boundary gate; thin-client `think` warns loudly
+  when those flags are set.