feat: component hash IDs + dynamic KV recipe system

Hash system:
- cmp_xxxxxxxx: stable ID for logic components (SHA-256 of canonical_id)
- rec_xxxxxxxx: stable ID for API recipe components
- Pre-seeded 15 cmp_ + 6 rec_ hash indexes in KV

RECIPES KV (id: 9cf9db905c6241f78503199e58b2ffe0):
- POST/GET/DELETE /recipes — CRUD for API recipe definitions
- recipe stored as: recipe:{canonical_id} + idx:{rec_hash}
- template interpolation: {{key}} replaced from context

component-loader resolution order:
  builtin → external URL → cmp_ hash → rec_ hash →
  logic canonical_id → KV recipe → builtin API fallback → error

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

cypher-executor/wrangler.toml

@@ -19,6 +19,10 @@ id = "e7f4320f88d343f187e35e3543dd74c9"
 binding = "ANALYTICS_KV"
 id = "a43b7997c8e54a34886c2995a853c720"
 
+[[kv_namespaces]]
+binding = "RECIPES"
+id = "9cf9db905c6241f78503199e58b2ffe0"
+
 [[r2_buckets]]
 binding = "WASM_BUCKET"
 bucket_name = "arcrun-wasm"