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>

packages/prometheus/README.md

@@ -0,0 +1,36 @@
+# @pyre/prometheus
+
+AI generation logic for the Prometheus meta mixer.
+
+## Purpose
+
+Generates Spawn **identity** (name, ticker, lore, image prompt, metadata) from
+cleanup receipts. Per §13 its responsibilities are:
+
+- Prompt templates.
+- Meta mixer.
+- Output parser.
+- Safety checks.
+- Image-prompt generator.
+
+See §9 (meta mixer) and §10 (Pump.fun creator workflow). Prometheus never
+controls funds; it only produces creative identity for **manual, human-reviewed**
+launch in the MVP.
+
+## Design rules
+
+- Meta influence is probabilistic, not deterministic.
+- Produce inspired mutations, not direct clones — reject exact copyrighted or
+  existing meme identities.
+
+## Status
+
+**Stubs only.** Every exported function throws `Error("not implemented")`.
+
+## TODO
+
+- Implement `buildPrompt`, `runMetaMixer`, `parseOutput`, `runSafetyChecks`,
+  `generateImagePrompt`.
+- The AI client (Anthropic / OpenAI / image-gen provider) is configured via
+  `@pyre/config` and injected here. This package adds **no** SDK dependencies of
+  its own.