v3.32.23

Three "clean exit, no real work reflected" bugs reported by @vidaunited on v3.32.22 — all reader/writer store-shape mismatches. Each fixed and validated E2E on the published package.

## Fixed

**#2797 — `hooks metrics` Pattern Learning always 0.** The pattern reader filtered on `key.includes('pattern') || metadata.type==='pattern' || key.startsWith('learned-')`, but no writer produces that shape. The post-task dual-write (#2786 fix-2) persists learned patterns as `routing-decision:*` entries in the `patterns` namespace. Fix: broaden the pattern filter to count `namespace==='patterns'` and `metadata.type==='routing-decision'`. **Shipped validation:** `patterns.total` 0 → 1 after one `hooks post-task --store-results`.

**#2798 — Nightly memory backup silent no-op under `CLAUDE_FLOW_ENCRYPT_AT_REST`.** Same class as #2786: `backupMemoryDb()` opened the RFE1-encrypted `.swarm/memory.db` with better-sqlite3's online-backup API → "file is not a database" → recorded as skipped while the worker reported 100% success. Users with encryption had zero backups behind a green status. Fix: fall back to a plain byte copy (valid — sql.js rewrites the encrypted file wholesale per flush). **Shipped validation:** RFE1 source → 176 KB snapshot written.

**#2799 — `swarm status` always Total 0 agents.** `swarm status` read `.swarm/agents/*.json` (never written); `agent spawn` records the count in `.claude-flow/metrics/swarm-activity.json`. Fix: reconcile against the activity file `agent spawn` actually writes when the agents dir is empty. **Shipped validation:** spawn 4 → swarm status Total 0 → 4 (matches `agent list`).

## Verification

- Regression tests: **3/3** pass (`hooks-metrics-swarm-backup-2797-2798-2799.test.ts`, real execFileSync repros)
- Post-publish: all three fixes re-validated on `npx ruflo@3.32.23`

## Upgrade

```bash
npx ruflo@latest --version   # → 3.32.23
```

Closes: #2797 #2798 #2799.