chore: scaffold PYRE MVP monorepo (structure + docs)

pnpm + TypeScript workspace per design doc §13:
- apps/{web,api,worker} skeletons (Next.js 16, Fastify 5, BullMQ)
- packages/{core,solana,prometheus,db,config} (core has real types/DTOs;
  solana/prometheus are stubs)
- programs/pyre-core placeholder (future Anchor, v1.0)
- docs/: PYRE_MVP_DESIGN (canonical), ARCHITECTURE, SECURITY, TOKEN_CLASSIFICATION
- CLAUDE.md, README, .env.example (no private-key var by design)

Skeleton + docs only — no Solana/business logic yet. All workspaces typecheck clean.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

apps/worker/README.md

@@ -0,0 +1,36 @@
+# @pyre/worker
+
+PYRE background worker process. **Skeleton only** — no job logic is implemented
+yet (see [`CLAUDE.md`](../../CLAUDE.md), §13).
+
+Stack: Node.js worker + BullMQ + Redis (`ioredis`), with `@pyre/db`,
+`@pyre/config`, `@pyre/core`, and `@pyre/prometheus`. AI services are API-based
+only — do not run local LLMs or image models.
+
+## Responsibilities (§13)
+
+Slow token metadata enrichment, AI generation jobs, image-prompt generation,
+safety checks, ticker/name collision checks, background confirmation tracking,
+receipt enrichment.
+
+## Job types to implement — TODO
+
+- [ ] `metadata-lookup` — async token metadata enrichment for scanned accounts.
+- [ ] `prometheus-generate` — AI Spawn generation (name/ticker/lore/image prompt)
+      via `@pyre/prometheus`.
+- [ ] `safety-check` — moderation + forbidden-term + ticker/name collision checks.
+- [ ] `tx-confirmation-watch` — track on-chain confirmation of submitted txs.
+- [ ] `receipt-enrichment` — enrich stored cleanup receipts post-confirmation.
+
+## AI safety rules (§16)
+
+Filter generated names/tickers/lore; avoid hate, explicit, extremist,
+copyrighted, impersonation, and scam-like outputs; require human approval before
+first launches.
+
+## Scripts
+
+- `dev` — `tsx watch src/index.ts`
+- `build` — `tsc -p tsconfig.json`
+- `typecheck` — `tsc --noEmit`
+- `lint` / `test` — placeholders for now