v0.36.4.0 feat: brain-health-100 — autonomous remediation via doctor --remediate + Minions (#1193)

* feat(schema): op_checkpoints table + doctor_run_id partial GIN (v67+v68)

T1 of brain-health-100 wave. Two new migrations underpin autonomous
remediation via Minions:

- v67 op_checkpoints — shared checkpoint table for long-running ops
  (embed, extract, lint, backlinks, reindex, integrity). Pre-fix each
  op had its own file-backed checkpoint or none. PRIMARY KEY (op,
  fingerprint) lets `extract links` and `extract timeline` (or
  `reindex --markdown` vs `--code`) coexist without colliding on
  shared keys.

- v68 minion_jobs_doctor_run_id_idx — partial GIN on
  `minion_jobs.data WHERE data ? 'doctor_run_id'`. Indexes only
  doctor-submitted jobs so audit-trail queries don't sequential-scan
  months of unrelated cron history. PGLite skips via empty sqlFor.

Applied to src/schema.sql + src/core/pglite-schema.ts so both engines
get the table on fresh-install. Bootstrap coverage test +
122-case migrate test both pass.

Plan: ~/.claude/plans/system-instruction-you-are-working-fluttering-ocean.md
(D12 + folded scope B from outside-voice review).

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

* feat(core): op-checkpoint module — DB-backed checkpoint primitive

T2 of brain-health-100 wave. Six exports plus per-op fingerprint helpers:

  loadOpCheckpoint(engine, key)     → string[]   (completed keys; [] if none)
  recordCompleted(engine, key, ks)  → void       (UPSERT atomic)
  clearOpCheckpoint(engine, key)    → void       (clean-exit drop)
  resumeFilter(all, completed)      → string[]   (pure; drives batched walks)
  purgeStaleCheckpoints(engine, ttl)→ number     (cycle purge phase consumer)

Fingerprint helpers:
  fingerprint(params)               — sha8 of canonical-JSON
  embedFingerprint(p)               — model+dim+slug+source variation
  extractFingerprint(p)             — mode (links vs timeline)
  reindexFingerprint(p)             — markdown vs code vs slug + chunker_version
  lintFingerprint, backlinksFingerprint, integrityFingerprint, importFingerprint

Canonical-JSON over keys-sorted ensures the same params produce the
same fingerprint across runs and hosts. sha8 (8 hex chars from sha256)
is short enough for filenames + UI but collision-resistant for the
expected per-op invocation diversity.

DB-backed for both engines (PGLite has the table too via v67). Lost-
write on partial DB failure is non-fatal — caller continues, next run
re-walks (cheap for hash-short-circuited ops like embed/import).

Plan: ~/.claude/plans/system-instruction-you-are-working-fluttering-ocean.md
(D12 + codex #10–16 from outside-voice review).

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

* feat(core): brain-score-recommendations — shared data layer

T4 of brain-health-100 wave. Pure module — no engine I/O. Takes a
BrainHealth snapshot + RecommendationContext, returns ordered
Remediation[] ready to feed the doctor remediation plan OR features
--auto-fix.

Three public exports:
  computeRecommendations(health, ctx)  → Remediation[]
  classifyChecks(checks, ctx)          → CheckClassification[]
  maxReachableScore(health, classes)   → number (0-100 ceiling)

D13 — three-state classification per check: remediable / human_only /
blocked. The plan ONLY emits remediable items; blocked surfaces
alongside as informational with the missing prereq (no API key, etc.).
Closes the spin-loop bug on empty / API-key-missing brains (codex #20).

D14 — every Remediation has a stable string id (sync.repo, embed.stale,
backlinks.fix, extract.all). depends_on references ids, not check names.

D9 — idempotency_key is content-hash from canonical-JSON of params.
Same intent across runs = same key; failed-row replay via :r<N> suffix
is the --remediate loop's job, not this module's.

Scope item +A (cost-budget gate) — Remediation.est_usd_cost populated
for embed (chars × pricePerMTok from embedding-pricing.ts) and Anthropic
jobs (estimateAnthropicCost helper). doctor --remediate --max-usd N
gates submission against est_total_usd_cost.

Both consumers (doctor + features per D15) import from here. Features
executes inline (D15 contract preserved), doctor submits via queue.

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

* feat(handlers): 11 new Minion handlers + 3 added to PROTECTED + sync noExtract fix

T5 of brain-health-100 wave.

PROTECTED_JOB_NAMES extension (D11): synthesize, patterns, consolidate.
These cycle phases internally submit `subagent` jobs with
allowProtectedSubmit=true, so they CAN spend Anthropic credits.
Treating them as "data-quality maintenance" was a misread surfaced by
the codex outside-voice review (#6). Protected gate ensures only
trusted local callers (CLI, autopilot, doctor --remediate) can submit;
an OAuth-scoped MCP client can't burn the user's API budget by
submitting a synthesize job over HTTP.

11 new handlers registered in jobs.ts registerBuiltinHandlers:

  PROTECTED (3) — phase-wrappers that spawn subagent children:
    synthesize, patterns, consolidate

  Open (8) — DB/fs writes only, no LLM spend:
    reindex, repair-jsonb, orphans, integrity, purge,
    extract_facts, resolve_symbol_edges, recompute_emotional_weight

Phase-wrappers all delegate to `runCycle({ phases: [name] })` rather
than extracting standalone phase functions. Cycle.ts already owns the
lock + abort signal + progress reporter per D10, so the wrapper is a
one-liner and cycle.ts remains the single source of truth for phase
semantics. Pragmatic deviation from the plan's "extract 6 standalone
runXxxPhase functions" — smaller diff, equivalent correctness.

Standalone `sync` handler now passes `noExtract: true` (codex #5 fix).
Pre-fix, doctor's remediation plan emitting [sync, extract] caused
double-extraction (performSync inline-extract + standalone extract
job). Now sync defers extract to the dedicated handler. Callers that
want inline extract pass { noExtract: false } in job params.

Plan: ~/.claude/plans/system-instruction-you-are-working-fluttering-ocean.md
(T5 + D10 + D11 + codex #5/#6 from outside-voice review).

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

* feat(doctor): --remediation-plan + --remediate CLI surfaces

T6 of brain-health-100 wave. The headline user-facing capability:
agents drive brain health to target score via autonomous Minions
remediation.

Two new flags on `gbrain doctor`:

  --remediation-plan [--json] [--target-score N]
    Read-only. Emits ordered Remediation[] from BrainHealth + context.
    Uses cheap path (D7) — engine.getHealth() + computeRecommendations,
    NOT a full doctor walk. JSON shape is stable agent contract.

  --remediate [--yes] [--target-score N] [--max-jobs N] [--max-usd N]
              [--dry-run] [--json]
    Sequential submit (D3) with D5 cascade on failure, D7 scoped
    recheck between steps, D9 content-hash idempotency keys, D13
    three-state remediation filtering (only remediable jobs enter
    the loop), +A cost-budget gate via --max-usd.

Check.remediation field added as additive optional (DoctorReport
schema_version stays at 2 per D4).

PGLite path: synchronous in-process execution with short polling.
Postgres path: durable queue submission with waitForCompletion.

The --remediate loop:
  1. Compute initial plan from BrainHealth
  2. Refuse if --target-score > maxReachableScore(health, classes)
  3. Refuse if est_total_usd_cost > --max-usd
  4. For each step in order:
     - Skip if depends_on intersects aborted set (D5)
     - queue.add with content-hash idempotency_key (D9)
     - waitForCompletion with timeout
     - Recompute plan from fresh health (D7 scoped recheck)
  5. Exit 0 if all completed; 1 if any failed/aborted

doctor_run_id UUID stamps every submitted job's data field so
operators can later query `SELECT * FROM minion_jobs WHERE
data->>'doctor_run_id' = '<uuid>'` (indexed via v68 partial GIN).

Plan: ~/.claude/plans/system-instruction-you-are-working-fluttering-ocean.md
(T6 + D1/D3/D5/D7/D9/D13 + folded scope A).

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

* feat(cli): maybeBackground helper + apply --background to embed

T7 of brain-health-100 wave. New helper in src/core/cli-options.ts
formalizes the --background flag pattern. Same semantics in TTY and
cron per D9 (submit-and-exit always; --background --follow execs
`gbrain jobs follow <id>` after submission).

  await maybeBackground({
    engine, args, jobName: 'embed',
    paramBuilder: (cleanArgs) => ({ stale, all, ... }),
  })
  // returns true if backgrounded → caller exits

Content-hash idempotency key (D9): `cli:embed:sha8(canonical-JSON(params))`.
No time-slot. Same intent across runs = same key. Failed-row replay
is the doctor --remediate loop's job, not this path's.

PGLite degrades to inline execution with a clear stderr note
("PGLite has no worker daemon; running inline"). NOT a no-op,
NOT silent — doc-stated semantic difference because PGLite has no
worker daemon.

Applied to `gbrain embed` as the reference integration. The other 6
commands (extract, lint, backlinks, reindex, integrity, pages) adopt
the same 4-line pattern at the top of their entry function — follow-up
in a smaller diff once the helper proves out in production.

Plan: ~/.claude/plans/system-instruction-you-are-working-fluttering-ocean.md
(T7 + D9 + Gap 6).

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

* feat(autopilot): targeted-submit loop + op_checkpoints GC in purge phase

T8 of brain-health-100 wave.

Autopilot dispatch changes (src/commands/autopilot.ts):

Pre-fix: every tick submitted ONE autopilot-cycle job, full phase
set, regardless of brain state. On a healthy brain pure overhead; on
a degraded brain bundled fast wins with slow phases so user waited
for the slowest.

New decision logic (T8 from plan):
  - score >= 95 AND empty plan AND <60min since last full → SLEEP
  - score >= 95 AND empty plan AND >=60min → submit autopilot-cycle
    (phase-coupling exercise)
  - plan <= 3 steps AND est_total < 5min → submit individual handlers
    (targeted; uses D9 content-hash idempotency keys per step;
    maxWaiting:1 per submit per codex #17)
  - else → submit autopilot-cycle (the hammer)

D10 cycle-lock invariant guarantees targeted-submit and autopilot-cycle
can never run concurrently (both acquire gbrain-cycle), closing the
"60-min floor double-processes queued targeted jobs" failure mode.

Computation uses cheap path (D7) — engine.getHealth() + computeRecommendations,
NOT a full doctor walk. Adds ~1 SQL count query per tick; negligible
on a 50K-page brain.

PROTECTED handlers (synthesize/patterns/consolidate) are submitted with
allowProtectedSubmit:true; autopilot is a trusted local caller.

Cycle purge phase (src/core/cycle.ts):

Added op_checkpoints GC (+C folded scope item). 7-day TTL — any
reasonable long-running op finishes inside that window. Non-fatal
on pre-v67 brains (table missing).

Plan: ~/.claude/plans/system-instruction-you-are-working-fluttering-ocean.md
(T8 + D7/D9/D10 + codex #17 + folded scope +C).

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

* test(core): brain-score-recommendations + op-checkpoint unit tests

T10 of brain-health-100 wave — load-bearing decision-pinning tests.

test/brain-score-recommendations.test.ts (22 cases):
  - Healthy brain → empty plan
  - Per-component remediation paths (sync, embed, backlinks, extract)
  - depends_on wiring (extract → sync; embed → sync when stale)
  - Severity ordering (critical > high > medium > low)
  - D6 #5 determinism: same input twice → byte-identical output
  - D9 idempotency keys: content-hash format, no time-slot
  - D9 source isolation: different --source → different key
  - D13 status field always 'remediable' in output
  - +A cost-estimate populated for embed
  - classifyChecks: remediable / blocked / human_only triage
  - maxReachableScore: all-remediable → 100; all-blocked → current

test/op-checkpoint.test.ts (20 cases):
  - fingerprint stability + key-order invariance (canonical-JSON)
  - codex #11: extract links vs timeline get different fingerprints
  - codex #12: reindex markdown vs code get different fingerprints
  - codex #15: embed model+dim variation produces different fingerprints
  - reindex chunker_version bump invalidates checkpoint
  - DB round-trip (load → record → load)
  - Cross-fingerprint isolation (linksKey vs timelineKey)
  - clearOpCheckpoint idempotency on missing rows
  - resumeFilter purity (no I/O, deterministic)
  - purgeStaleCheckpoints TTL respect

42 new tests, all pass. PGLite engine + resetPgliteState pattern per
CLAUDE.md test-isolation guide.

Plan: ~/.claude/plans/system-instruction-you-are-working-fluttering-ocean.md
(T10 + D6 #5 + D9 + D12 + D13 + codex #11/#12/#15).

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

* chore(release): v0.36.0.0 — brain-health-100 wave + docs/llms refresh

T12 of brain-health-100 wave. VERSION + package.json bumped 0.35.6.0
→ 0.36.0.0. CHANGELOG entry leads ELI10 ("your agent can now drive
your brain to 90/100 by itself, on a cron, without you watching")
then drills into the precise mechanics per CLAUDE.md voice rules.

llms.txt + llms-full.txt regenerated via bun run build:llms.

Trio audit (CLAUDE.md mandatory pre-push check):
  VERSION:     0.36.0.0
  package.json: 0.36.0.0
  CHANGELOG:   ## [0.36.0.0] - 2026-05-18

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

* docs: update README/CLAUDE/AGENTS/maintain for v0.36.4.0 brain-health-100 wave

- README.md: New-in-v0.36.4.0 callout — `gbrain doctor --remediate` headline,
  autopilot health-aware tick, eleven new background-job types, three PROTECTED.
- CLAUDE.md: Key Files entries for `op-checkpoint.ts`, `brain-score-recommendations.ts`,
  doctor.ts / jobs.ts / protected-names.ts / autopilot.ts / cycle.ts / embed.ts /
  cli-options.ts extensions; new "Key commands added in v0.36.4.0" section.
- AGENTS.md: Common-tasks entry pointing agents at the one-command remediation loop.
- skills/maintain/SKILL.md: Autonomous Phase (gbrain doctor --remediate) at the top,
  manual per-dimension walk preserved as the fallback path.
- llms-full.txt: regenerated to pick up the CLAUDE.md changes (project rule).

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

* docs(changelog): respectful tone on spend caps for v0.36.4.0

Reframed the cost-budget callout. Pre-fix language said the spend cap
prevents a synthesize loop from "burning $100 of Anthropic credits
while you're at lunch" — casually treating $100 as the throwaway number
is tone-deaf. $100 is a meaningful amount for many people.

New language: "spend cap so a synthesize loop can't run up your
Anthropic bill while you're at lunch. The cap is yours to set per run."
And: "Pass --max-usd 5 (or whatever cap you're comfortable with)."
And: "Pick the cap that fits your wallet."

Also reframed three adjacent lines:
- "healthy brains stop burning cycles" → "stop spending tokens on
  work that has nothing to do"
- "agent can't submit them and burn your API budget" → "can't submit
  them on your behalf. Your provider bill stays in your hands"
- Table cell "Cron with cost cap" / "--max-usd 5" → "Cron with spend
  cap" / "--max-usd N"

llms-full.txt regenerated to match.

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

---------

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

src/schema.sql

@@ -466,6 +466,26 @@ CREATE TABLE IF NOT EXISTS oauth_codes (
 CREATE INDEX IF NOT EXISTS idx_mcp_log_time_agent ON mcp_request_log(created_at, token_name);
 CREATE INDEX IF NOT EXISTS idx_mcp_log_agent_time ON mcp_request_log(agent_name, created_at DESC);
 
+-- ============================================================
+-- op_checkpoints: shared checkpoint table for long-running ops
+-- ============================================================
+-- v0.36+ autonomous-remediation wave (migration v67). Pre-fix each op
+-- carried its own file-backed checkpoint (or none); that broke on
+-- Postgres multi-worker hosts and fingerprint-collided across param
+-- variations. Fingerprint = sha8 of canonical-JSON of relevant params
+-- per op (mode, source, chunker_version, embedding_model+dims, etc.).
+-- completed_keys = op-defined string array. GC: cycle purge phase
+-- drops rows older than 7 days.
+CREATE TABLE IF NOT EXISTS op_checkpoints (
+  op             TEXT NOT NULL,
+  fingerprint    TEXT NOT NULL,
+  completed_keys JSONB NOT NULL DEFAULT '[]'::jsonb,
+  updated_at     TIMESTAMPTZ NOT NULL DEFAULT now(),
+  PRIMARY KEY (op, fingerprint)
+);
+CREATE INDEX IF NOT EXISTS op_checkpoints_updated_at_idx
+  ON op_checkpoints (updated_at);
+
 -- ============================================================
 -- files: binary attachments stored in Supabase Storage
 -- ============================================================