feat(mcpedia): Phase 1 MVP — monorepo, Core, Web UI, MCP server, Postgres FTS

- bun workspaces + Turborepo monorepo (apps/web, apps/mcp; packages/*, scripts)
- @mcpedia/core single business-logic layer (Document/Content/Search services)
- @mcpedia/db Drizzle schema: documents + weighted tsvector (GIN) for FTS
- @mcpedia/parser frontmatter, @mcpedia/search Postgres FTS (ts_rank+ts_headline)
- Next.js 16 Web UI (home/doc SSG, search dynamic) + react-markdown render
- MCP server (stdio) with 4 tools + in-memory smoke test
- scripts/indexer walks content/ -> upserts into Postgres
- 4 seed docs; README + PHASES status

packages/db/drizzle.config.ts

@@ -0,0 +1,11 @@
+import { defineConfig } from "drizzle-kit";
+import { DATABASE_URL } from "@mcpedia/config";
+
+export default defineConfig({
+  dialect: "postgresql",
+  schema: "./src/schema.ts",
+  out: "./drizzle",
+  dbCredentials: { url: DATABASE_URL },
+  verbose: true,
+  strict: true,
+});