v3.59.0

## Highlights

- **Real AgentDB HNSW vector search** (#4249/#4322): `AgentDBBackend` now wires the separately-exported `agentdb.HNSWIndex` directly, replacing the dead `getController('hnsw')` path that always threw against the real `agentdb` package and was silently caught on every search. Native search now has correct staleness rejection, safe rebuilds after writes, and exact-cosine fallback on any native-capability failure, missing dependency, dimension mismatch, or filtered query. Follow-up (#4319) added test coverage for the WASM-missing disable path and concurrent index builds.
- **RaBitQ index now builds automatically** (#4318/#4319): previously required a manual build step; now builds on demand with safe fallback to exact search.
- **New: Grok Build CLI host** (#3512): `init` now supports Grok Build as a first-class agent host alongside Claude Code and Codex.
- **New: memory tag filtering** (#3526): `memory list`/`memory search` gained a tag filter, explicit-provider precedence, and an Ollama default model.

## Fixes

- Memory delete-sync: `AutoMemoryBridge.importFromAutoMemory()` now removes entries whose source file/heading was deleted, instead of being additive-only (#4138).
- Swarm idle-agent heartbeat false positive: healthy idle agents (no in-flight work) were being marked `error` and dropped from `getAvailableAgents()` after 3 missed heartbeat intervals, even though they have no heartbeat producer to begin with (#4320).
- Ephemeral-agent termination idempotency: `FederationHub.terminateAgent()`/`completeAgent()` could double-count the same agent's completion/failure on a repeated call (shutdown, `unregisterSwarm`, TTL cleanup, or a retried request) (#4323).
- `status tasks` always printed "No tasks": it sent `status: 'all'` as a literal filter (matching nothing) and read the wrong field names from `task_list`'s response (#4321).
- `task_list`'s `total` count was computed after applying `limit`, so it always equaled the page size instead of the real match count (#4324).
- `metaharness similarity`'s cost dimension was inert below $0.999 (an algebraic no-op collapsed the whole realistic cost range to 0), and the `minor-drift` verdict threshold had two disagreeing encodings (#3520).
- `ruflo-harness` now reports the live process instead of just the install (#3521).

## Documentation

- Fixed the actual cause of broken images/links on npmjs.com/package/ruflo: a stray `repository.directory: "ruflo"` field in `ruflo/package.json` was adding an extra path layer on top of the README content (which is the repo-root README, copied in verbatim at publish time with repo-root-relative paths already). Removed the field to match `claude-flow`'s own repository entry.

## Published

- `@claude-flow/cli@3.59.0`, `claude-flow@3.59.0`, `ruflo@3.59.0` — `latest`/`alpha`/`v3alpha` dist-tags all verified on the live registry.
- `@claude-flow/memory@3.0.8` (standalone, the #4249 fix — not bundled into the 3-package train).