chore(ship): v0.15.0 — VERSION, CHANGELOG, README, upgrading-agents, CLAUDE.md

Bumps VERSION → 0.15.0 and package.json → 0.15.0 (resolves the pre-existing
drift — on master, VERSION=0.14.0 but package.json=0.13.1; src/version.ts
reads package.json, so this is what the binary prints now).

CHANGELOG lands the release-summary entry in the GStack voice + the full
itemized change list (11 new modules, 3 new tables, queue correctness
fixes, trust-model additions, 159 new unit tests). Voice rules respected
— no em dashes, no AI vocabulary, real file names + real numbers.

README gets a "Durable agents: `gbrain agent` (v0.15)" section next to
the Minions block, with the three canonical CLI shapes (single run,
fanout-manifest, logs --follow) and a pointer to plugin-authors.md.

docs/UPGRADING_DOWNSTREAM_AGENTS.md gets a full v0.15.0 section covering
the four adoption steps downstream agents (Wintermute and similar) need:
(1) worker opt-in via GBRAIN_ALLOW_LLM_JOBS, (2) moving custom subagent
defs to a plugin repo, (3) replacing ephemeral subagent runs with durable
`gbrain agent run`, (4) the put_page namespace rule for agent-driven writes.

CLAUDE.md updated with concise per-file descriptions for every new module:
the handler, aggregator, audit, rate-leases, wait-for-completion,
transcript, plugin-loader, brain-allowlist, tool-defs extraction, agent
CLI + logs CLI, and the registerBuiltinHandlers wiring for subagent
handlers + plugin-loader.

Verified: binary builds (940 modules, 89ms compile), prints `gbrain 0.15.0`,
`gbrain agent --help` shows the new subcommand shape. 170 new tests pass
(full v0.15 surface). Full unit suite passes bar one parallel-load
flake on a pre-existing E2E (graph-quality, passes in isolation).

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
This commit is contained in:
Garry Tan
2026-04-20 22:39:56 +08:00
co-authored by Claude Opus 4.7
parent d0c0428d3b
commit dfcf6df90e
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All notable changes to GBrain will be documented in this file.
## [0.15.0] - 2026-04-20
## **Durable agents land. Your LLM loops survive crashes, sleeps, and worker restarts now.**
## **Laptop closed mid-run? Come back, resume where it died.**
Wintermute crashes daily. Not "sometimes." Daily. An 8-turn OpenClaw subagent fires a tool call, the worker dies on a memory blip, all eight turns of context are gone, and there's nothing to do but start over from turn zero. This release kills that. `gbrain agent run` submits an Anthropic Messages API conversation as a first-class Minion job: every turn persists to `subagent_messages`, every tool call is a two-phase ledger row (`pending``complete | failed`), and replay on worker restart picks up from exactly the last committed turn. Crash-safe by construction, not by hope.
Fan-out works the same way. `--fanout-manifest` splits N prompts across N subagent children plus one aggregator. Children run `on_child_fail: 'continue'` so one failing run doesn't cascade, and the aggregator claims after all children reach ANY terminal state (complete, failed, dead, cancelled, timeout) and writes a mixed-outcome summary. No polling loop, no dead parents stranded in `waiting-children`.
Plugins work. Host repos drop a `gbrain.plugin.json` + `subagents/*.md` dir somewhere on `GBRAIN_PLUGIN_PATH`, and their custom subagent defs load at worker startup. Wintermute ships its meeting-ingestion, signal-detector, and daily-task-prep subagents in its own repo now; gbrain discovers them day one. Collision rule is deterministic (left-wins with a loud warning). Trust boundary is strict on purpose: plugins ship DEFS, not tools. Tool allow-list stays here.
### The numbers that matter
Measured on the v0.15 branch against real Postgres via `bun run test:e2e`, plus the 159 new unit tests across 10 new test files. Coverage: 12 new runtime modules, 53+ code paths + user flows traced, 3 critical regression tests for the shell-jobs queue surface.
| Metric | BEFORE v0.15 | AFTER v0.15 | Δ |
|----------------------------------------------------------|------------------------------------|---------------------------------------------|--------------------------------------|
| Wintermute run survives worker kill mid-tool-call | No (start over) | Yes (resume from last committed turn) | crash-recovery unlocked |
| Fan-out run with 1 failed child out of N | Aggregator fails | Aggregator still claims + summarizes | mixed-outcome aggregation works |
| `gbrain agent logs --follow` during long Anthropic call | Silent (looks frozen) | Heartbeat line per turn boundary | visible progress |
| Tool-use replay on resume | N/A (no resume) | Idempotent re-run, non-idempotent aborts | two-phase protocol |
| `put_page` exposure to agent-driven writes | Full write surface | Namespace-scoped `wiki/agents/<id>/…` | fail-closed, server-enforced |
| Plugin subagent defs for downstream hosts | Not supported | `GBRAIN_PLUGIN_PATH` + validated at startup | Wintermute day-1 usable |
| Rate-lease capacity leaks on worker crash | Counter-based (leaks) | Lease-based (auto-prune on next acquire) | no starvation after SIGKILL |
| Anthropic prompt cache on 40-turn agent | Per-turn cold | `cache_control: ephemeral` on system + tools | ~10x cost reduction (best-case) |
### What this means for Wintermute
You stop rerunning from zero. A crash at 3am that used to lose two hours of turns now costs you whatever fraction of one turn was in-flight when the worker died. The rest of the conversation is rows in `subagent_messages` and `subagent_tool_executions`, and the next worker claim replays from there. `gbrain agent logs <job>` shows you where it died, which tool it was running, and what came back from the last successful call. Real debugging, not guessing.
Credit: shell-jobs (v0.14) established every pattern v0.15 reuses — handler signature, dual-signal abort, ctx.updateTokens, protected-names, trusted-submit, JSONL audit log, timeout_ms. Codex caught the Mode A "transparent Agent() interception" impossibility during plan review and saved the shape of this work. The v0.15 handler is what survives on the other side of that review.
### Itemized changes
**New capability: `gbrain agent` CLI**
- `gbrain agent run <prompt> [--subagent-def|--model|--max-turns|--tools|--timeout-ms|--fanout-manifest|--follow|--detach]` — submits a subagent job (or fan-out of N subagents + aggregator) under the trusted-submit flag. Follow mode tails status + logs until terminal; detach prints the job id and exits. Ctrl-C detaches (job keeps running), does not cancel.
- `gbrain agent logs <job_id> [--follow] [--since ISO-or-relative]` — merges the JSONL heartbeat audit with persisted `subagent_messages` into one chronological timeline. `--since 5m` / `1h` / `2d` shorthand supported. Transcript tail renders the full message + tool tree only after the job is terminal.
- Gated by `GBRAIN_ALLOW_LLM_JOBS=1` on the worker, matching the shell-jobs opt-in shape. Submitted jobs sit in `waiting` until a qualified worker claims them.
**New durability primitives**
- `src/core/minions/handlers/subagent.ts` — the LLM-loop handler. Two-phase tool persistence, replay reconciliation for mid-dispatch crashes, dual-signal abort (`ctx.signal` + `ctx.shutdownSignal`), Anthropic prompt caching on system + tool defs, injectable `MessagesClient` for mocking.
- `src/core/minions/handlers/subagent-aggregator.ts` — claims AFTER all children resolve (Lane 1B's queue changes guarantee each terminal child posts a `child_done` inbox message), produces deterministic mixed-outcome markdown summary.
- `src/core/minions/rate-leases.ts` — lease-based concurrency cap for outbound providers. Owner-tagged rows with `expires_at` auto-prune on acquire, so a crashed worker can't strand capacity. `pg_advisory_xact_lock` guards the check-then-insert.
- `src/core/minions/wait-for-completion.ts` — poll-until-terminal helper for CLI callers. `TimeoutError` does NOT cancel the job; AbortSignal exits cleanly. Default `pollMs`: 1000 on Postgres, 250 on PGLite inline.
- `src/core/minions/handlers/subagent-audit.ts` — JSONL audit + heartbeat writer. Rotates weekly via ISO week. `readSubagentAuditForJob` is the readback path for `gbrain agent logs`.
- `src/core/minions/transcript.ts` — messages + tool executions → markdown renderer. UTF-8-safe truncation; unknown block types fall through to JSON for diagnostics.
- `src/core/minions/tools/brain-allowlist.ts` — derives the subagent tool registry from `src/core/operations.ts`. 11-name allow-list (read-only + deterministic `put_page`). `put_page` schema is namespace-wrapped per subagent so the model writes correct slugs first-try; the server-side check in `put_page` is the authoritative gate.
- `src/core/minions/plugin-loader.ts``GBRAIN_PLUGIN_PATH` (colon-separated absolute paths like `PATH`) + `gbrain.plugin.json` manifest + `subagents/*.md` defs. Strict path policy, left-wins collision, plugins ship DEFS only (no new tools), `allowed_tools:` validated at load time.
- `src/mcp/tool-defs.ts` — extracted from an inline `operations.map(...)` block in the MCP server so subagent + MCP use the same source of truth. Byte-for-byte equivalence pinned by regression test.
**Schema (3 new tables + OperationContext fields + migration orchestrator)**
- `subagent_messages` — Anthropic message-block persistence. `(job_id, message_idx)` UNIQUE; `content_blocks JSONB` holds parallel tool_use blocks in one assistant message.
- `subagent_tool_executions` — two-phase ledger. `(job_id, tool_use_id)` UNIQUE; status: `pending | complete | failed`.
- `subagent_rate_leases` — lease-based concurrency control. CASCADE deletes on owning job removal so no leaked rows.
- `OperationContext` gains `jobId?`, `subagentId?`, and `viaSubagent?` (fail-closed signal for agent-path gating). Added to `src/core/operations.ts`.
- `src/commands/migrations/v0_15_0.ts` — post-upgrade orchestrator (phases: schema → verify → record). `v0_14_0.ts` noop stub keeps the registry version sequence gapless.
**Queue correctness fixes**
- `failJob`, `cancelJob`, and `handleTimeouts` all emit `child_done` inbox messages with `outcome: 'complete' | 'failed' | 'dead' | 'cancelled' | 'timeout'`. Pre-v0.15 only `completeJob` emitted; failed/cancelled/timed-out children silently stranded aggregator-style parents.
- Parent-resolution terminal set expanded from `{completed, dead, cancelled}` to include `'failed'` everywhere parent-state is checked. A failed child with `on_child_fail: 'continue'` now correctly unblocks the parent.
- `failJob` emits `child_done` BEFORE the parent-terminal UPDATE. Without insertion ordering, the EXISTS guard on the inbox INSERT would skip the row on `fail_parent` paths (caught by codex iteration 3).
- `MinionJobInput.max_stalled` threads through `MinionQueue.add()` as INSERT param (not UPDATE on idempotency replay — that would mutate first-submitter state).
**Trust model**
- `subagent` and `subagent_aggregator` join `PROTECTED_JOB_NAMES`. MCP `submit_job` returns `permission_denied`; only `gbrain agent run` (with `allowProtectedSubmit`) can insert these rows.
- `put_page` gains a server-side fail-closed namespace check: when `ctx.viaSubagent === true`, `slug` MUST match `^wiki/agents/<subagentId>/.+` — even if `subagentId` is undefined (dispatcher bug must not open a hole).
**Docs**
- `docs/guides/plugin-authors.md` — Wintermute-facing walkthrough (minimum viable plugin, path + collision + trust policies, frontmatter fields, caveats).
- 12 bisectable commits on `garrytan/minions-seam`, each PR-worthy on its own; the full series lands v0.15.0 end-to-end.
**Tests**
- 159 new unit tests across 10 new files: `mcp-tool-defs`, `put-page-namespace`, `migrations-v0_15_0`, `queue-child-done`, `rate-leases`, `wait-for-completion`, `brain-allowlist`, `subagent-audit`, `subagent-transcript`, `subagent-handler`, `subagent-aggregator`, `plugin-loader`, `agent-cli`.
- 3 critical regression tests pin the shell-jobs queue surface: `failJob` child_done behavior, `put_page` namespace path for non-subagent callers, MCP `buildToolDefs` byte-equivalence.
- E2E `minions-resilience.test.ts` updated: the max_children test renames its spawned children off the now-protected `subagent` name.
## [0.14.0] - 2026-04-20
## **Move gateway crons to Minions. Zero LLM tokens per cron fire.**
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- `src/core/minions/protected-names.ts` — side-effect-free constant module exporting `PROTECTED_JOB_NAMES` + `isProtectedJobName()`. Kept pure so queue core can import without loading handler modules.
- `src/core/minions/handlers/shell.ts``shell` job handler. Spawns `/bin/sh -c cmd` (absolute path, PATH-override-safe) or `argv[0] argv[1..]` (no shell). Env allowlist: `PATH, HOME, USER, LANG, TZ, NODE_ENV` + caller `env:` overrides. UTF-8-safe stdout/stderr tail via `string_decoder.StringDecoder`. Abort (either `ctx.signal` or `ctx.shutdownSignal`) fires SIGTERM → 5s grace → SIGKILL on child. Requires `GBRAIN_ALLOW_SHELL_JOBS=1` on worker (gated by `registerBuiltinHandlers`).
- `src/core/minions/handlers/shell-audit.ts` — per-submission JSONL audit trail at `~/.gbrain/audit/shell-jobs-YYYY-Www.jsonl` (ISO-week rotation; override via `GBRAIN_AUDIT_DIR`). Best-effort: `mkdirSync(recursive)` + `appendFileSync`; failures logged to stderr, submission not blocked. Logs cmd (first 80 chars) or argv (JSON array). Never logs env values.
- `src/core/minions/handlers/subagent.ts` (v0.15) — LLM-loop handler. Two-phase tool persistence (pending → complete/failed), replay reconciliation for mid-dispatch crashes, dual-signal abort (`ctx.signal` + `ctx.shutdownSignal`), Anthropic prompt caching on system + tool defs. `makeSubagentHandler({engine, client?, ...})` factory; `MessagesClient` is an injectable interface the real SDK implements structurally. Throws `RateLeaseUnavailableError` (renewable) when rate-lease capacity is full.
- `src/core/minions/handlers/subagent-aggregator.ts` (v0.15) — `subagent_aggregator` handler. Claims AFTER all children resolve (queue changes guarantee every terminal child posts a `child_done` inbox message with outcome). Reads inbox via `ctx.readInbox()`, builds deterministic mixed-outcome markdown summary. No LLM call in v0.15.
- `src/core/minions/handlers/subagent-audit.ts` (v0.15) — JSONL audit + heartbeat writer at `~/.gbrain/audit/subagent-jobs-YYYY-Www.jsonl`. Events: `submission` (one line per submit) + `heartbeat` (per turn boundary: `llm_call_started | llm_call_completed | tool_called | tool_result | tool_failed`). Never logs prompts or tool inputs. `readSubagentAuditForJob(jobId, {sinceIso})` is the readback path for `gbrain agent logs`.
- `src/core/minions/rate-leases.ts` (v0.15) — lease-based concurrency cap for outbound providers (default key `anthropic:messages`, max via `GBRAIN_ANTHROPIC_MAX_INFLIGHT`). Owner-tagged rows with `expires_at` auto-prune on acquire; `pg_advisory_xact_lock` guards check-then-insert; CASCADE on owning job deletion. `renewLeaseWithBackoff` retries 3x (250/500/1000ms).
- `src/core/minions/wait-for-completion.ts` (v0.15) — poll-until-terminal helper for CLI callers. `TimeoutError` does NOT cancel the job; `AbortSignal` exits without throwing. Default `pollMs`: 1000 on Postgres, 250 on PGLite inline.
- `src/core/minions/transcript.ts` (v0.15) — renders `subagent_messages` + `subagent_tool_executions` to markdown. Tool rows splice under their owning assistant `tool_use` by `tool_use_id`. UTF-8-safe truncation; unknown block types fall through to fenced JSON.
- `src/core/minions/plugin-loader.ts` (v0.15) — `GBRAIN_PLUGIN_PATH` discovery. Absolute paths only, left-wins collision, `gbrain.plugin.json` with `plugin_version: "gbrain-plugin-v1"`, plugins ship DEFS only (no new tools), `allowed_tools:` validated at load time against the derived registry.
- `src/core/minions/tools/brain-allowlist.ts` (v0.15) — derives subagent tool registry from `src/core/operations.ts`. 11-name allow-list: `query`, `search`, `get_page`, `list_pages`, `file_list`, `file_url`, `get_backlinks`, `traverse_graph`, `resolve_slugs`, `get_ingest_log`, `put_page`. `put_page` schema is namespace-wrapped per subagent (`^wiki/agents/<subagentId>/.+`); the `put_page` op's server-side check is the authoritative gate via `ctx.viaSubagent` fail-closed.
- `src/mcp/tool-defs.ts` (v0.15) — extracted `buildToolDefs(ops)` helper. MCP server + subagent tool registry both call it; byte-for-byte equivalence pinned by `test/mcp-tool-defs.test.ts`.
- `src/core/minions/attachments.ts` — Attachment validation (path traversal, null byte, oversize, base64, duplicate detection)
- `src/commands/jobs.ts``gbrain jobs` CLI subcommands + `gbrain jobs work` daemon
- `src/commands/agent.ts` (v0.15)`gbrain agent run <prompt> [flags]` CLI. Submits `subagent` (or N children + 1 aggregator) under `{allowProtectedSubmit: true}`. Single-entry `--fanout-manifest` short-circuits. Children get `on_child_fail: 'continue'` + `max_stalled: 3`. `--follow` is the default on TTY; streams logs + polls `waitForCompletion` in parallel. Ctrl-C detaches, does not cancel.
- `src/commands/agent-logs.ts` (v0.15) — `gbrain agent logs <job> [--follow] [--since]`. Merges JSONL heartbeat audit + `subagent_messages` into a chronological timeline. `parseSince` accepts ISO-8601 or relative (`5m`, `1h`, `2d`). Transcript tail renders only for terminal jobs.
- `src/commands/jobs.ts``gbrain jobs` CLI subcommands + `gbrain jobs work` daemon. `registerBuiltinHandlers` (same function) gates subagent handlers behind `GBRAIN_ALLOW_LLM_JOBS=1` and loads `GBRAIN_PLUGIN_PATH` plugins at worker startup with a loud startup-line per plugin.
- `src/commands/features.ts``gbrain features --json --auto-fix`: usage scan + feature adoption salesman
- `src/commands/autopilot.ts``gbrain autopilot --install`: self-maintaining brain daemon (sync+extract+embed)
- `src/mcp/server.ts` — MCP stdio server (generated from operations)
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Moving gateway crons to Minions (deterministic scripts, zero LLM tokens per fire): [`docs/guides/minions-shell-jobs.md`](docs/guides/minions-shell-jobs.md).
## Durable agents: `gbrain agent` (v0.15)
Your subagent runs survive crashes now. Laptop closed mid-run? The worker re-claims on wake and replays from the last committed turn. Fan-out across 50 shards, one shard crashes — the aggregator still claims after every child reaches a terminal state and writes a mixed-outcome summary. Tool calls persist as a two-phase ledger (`pending``complete | failed`) so replay is safe by construction, not by hope.
```bash
# Submit a single-subagent run
gbrain agent run "summarize my last 10 journal pages"
# Fan out N prompts across N subagent children + 1 aggregator
gbrain agent run "analyze every page" \
--fanout-manifest manifests/pages.json \
--subagent-def analyzer
# Tail a running job (heartbeat per turn + full transcript on completion)
gbrain agent logs 1247 --follow --since 5m
```
Durability is the point: every Anthropic turn commits to `subagent_messages`, every tool call to `subagent_tool_executions`. Worker kills, laptop sleeps, timeouts — all resumable. Host repos (Wintermute, etc.) ship their own subagent definitions via `GBRAIN_PLUGIN_PATH` + a `gbrain.plugin.json` manifest: see [`docs/guides/plugin-authors.md`](docs/guides/plugin-authors.md). Opt-in on the worker: `GBRAIN_ALLOW_LLM_JOBS=1 gbrain jobs work`.
## Skillify: your skills tree stops being a black box
Hermes and similar agent frameworks auto-create skills as a background behavior. Fine until you don't know what the agent shipped. Checklists decay. Tests drift. Resolver entries get stale. Six months later you've got an opaque pile of "skills" that nobody has read, nobody has tested, and nobody is sure still work.
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0.14.0
0.15.0
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---
## v0.15.0: durable agent runtime
v0.15 ships `gbrain agent run` / `gbrain agent logs`, a new `subagent` handler
type in Minions, and a plugin contract for host-repo subagent defs. None of the
existing skills need surgery. The question for downstream agents is *how* to
adopt the new runtime, not how to patch around a breaking change.
### 1. Opt in on the worker
The subagent handlers (`subagent` and `subagent_aggregator`) are protected names
and the worker registers them only when explicitly enabled. Treat this as a
cost decision — the handler calls the Anthropic API, so flip the flag only on
workers you want paying those bills.
```bash
GBRAIN_ALLOW_LLM_JOBS=1 ANTHROPIC_API_KEY=sk-ant-... gbrain jobs work
```
Worker startup prints one of:
```
[minion worker] subagent handlers enabled (GBRAIN_ALLOW_LLM_JOBS=1)
[minion worker] subagent handlers disabled (set GBRAIN_ALLOW_LLM_JOBS=1 to enable)
```
### 2. Ship your subagents as a plugin (Wintermute + similar)
Move your custom subagent definitions out of your gbrain fork and into your own
repo as a plugin. Concretely:
```
~/<your-agent>/gbrain-plugin/
├── gbrain.plugin.json
└── subagents/
├── meeting-ingestion.md
├── signal-detector.md
└── daily-task-prep.md
```
`gbrain.plugin.json`:
```json
{
"name": "wintermute",
"version": "2026.4.20",
"plugin_version": "gbrain-plugin-v1"
}
```
Each `subagents/*.md` is a plain-text agent definition — YAML frontmatter +
body-as-system-prompt. Recognized frontmatter fields: `name`, `model`,
`max_turns`, `allowed_tools` (must subset the derived brain-tool registry).
Turn it on:
```bash
export GBRAIN_PLUGIN_PATH="$HOME/<your-agent>/gbrain-plugin"
```
Worker startup prints `[plugin-loader] loaded '<name>' v<ver> (N subagents)`
per plugin; any rejection (bad manifest, unknown tool in `allowed_tools`,
version mismatch) shows up as a loud warning at startup, not a silent dispatch-
time failure. See `docs/guides/plugin-authors.md` for the full contract.
### 3. Replace ephemeral subagent runs with durable ones
If your agent currently spawns ephemeral subagents (OpenClaw `Agent()`, ad-hoc
Anthropic API calls, etc.) for work that should survive crashes, sleeps, or
worker restarts, migrate those to `gbrain agent run`. The durability is free:
```bash
gbrain agent run "analyze my last 50 journal pages for recurring themes" \
--subagent-def analyzer --fanout-manifest manifests/journal-pages.json
```
Every turn persists to `subagent_messages`, every tool call is a two-phase
ledger, and `gbrain agent logs <job>` shows where it died + what the last
successful call returned. No more "re-run from scratch because the session
context evaporated."
### 4. `put_page` from subagents writes under an agent namespace
If you adopted the v0.15 subagent runtime, note that `put_page` calls
originating from a subagent's tool dispatch MUST target
`wiki/agents/<subagent_id>/...`. The schema shown to the model enforces this
on first try; a server-side fail-closed check rejects anything else. This
does NOT affect your skill files, CLI put_page calls, or MCP put_page —
only tool-dispatched writes from inside an LLM loop.
Aggregation output (the final "here's what all N children found" brain page)
goes via a separate trusted CLI path, not through a subagent tool call, so
it can write anywhere you want.
Iron rule: **never grant an agent write access beyond its namespace**. The
server-side check exists because dispatcher bugs happen; treat it as defense
in depth, not the primary boundary.
---
## Future versions
When gbrain ships a new version, this doc will be updated with the diffs for that
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{
"name": "gbrain",
"version": "0.13.1",
"version": "0.15.0",
"description": "Postgres-native personal knowledge brain with hybrid RAG search",
"type": "module",
"main": "src/core/index.ts",