feat: deno-first storage package with sqlite host and graph schemas

Scaffolded @alkdev/storage from @ade/storage_sqlite and @ade/core/graphs:
- graphs/ module: TypeBox schema types + SchemaBuilder (from @ade/core/graphs)
- sqlite/ module: Drizzle table defs, relations, injectable client (from @ade/storage_sqlite)
- pg/ module: placeholder for Postgres host
- deno.json configured for JSR with subpath exports (./graphs, ./sqlite, ./pg)
- Imports swapped: @sinclair/typebox → @alkdev/typebox, drizzle-typebox → @alkdev/drizzlebox
- Client is now injectable (no hardcoded env vars or module-level side effects)
- no-slow-types lint excluded (Drizzle generics); --allow-slow-types on publish

deno.json

@@ -0,0 +1,33 @@
+{
+  "name": "@alkdev/storage",
+  "version": "0.1.0",
+  "license": "MIT",
+  "exports": {
+    ".": "./mod.ts",
+    "./graphs": "./src/graphs/mod.ts",
+    "./sqlite": "./src/sqlite/mod.ts",
+    "./pg": "./src/pg/mod.ts"
+  },
+  "imports": {
+    "@alkdev/typebox": "npm:@alkdev/typebox",
+    "@alkdev/drizzlebox": "npm:@alkdev/drizzlebox",
+    "drizzle-orm": "npm:drizzle-orm",
+    "drizzle-orm/sqlite-core": "npm:drizzle-orm/sqlite-core",
+    "drizzle-orm/pg-core": "npm:drizzle-orm/pg-core",
+    "@libsql/client": "npm:@libsql/client",
+    "postgres": "npm:postgres",
+    "@std/assert": "jsr:@std/assert"
+  },
+  "lint": {
+    "rules": {
+      "exclude": ["no-slow-types"]
+    }
+  },
+  "tasks": {
+    "check": "deno check mod.ts src/graphs/mod.ts src/sqlite/mod.ts",
+    "test": "deno test --allow-all test/",
+    "lint": "deno lint",
+    "fmt": "deno fmt",
+    "publish:dry": "deno publish --allow-slow-types --dry-run"
+  }
+}