feat: align local API dev with Cloudflare storage

[codemountains]

Summary

• enable local D1/R2 bindings in apps/api/wrangler.toml while keeping Durable Objects configured for endpoint stream coordination
• make just dev-api apply local D1 migrations and start wrangler dev --persist-to .wrangler/state
• add a focused config regression test plus local Cloudflare development docs for D1/R2 inspection and reset workflows

Closes #35

Verification

• TDD red: pnpm --filter @barestash/api test -- src/wrangler-config.test.ts failed before enabling persisted dev/bindings
• TDD green: pnpm --filter @barestash/api test -- wrangler-config.test.ts
• pnpm --filter @barestash/api run db:migrate:local
• pnpm --filter @barestash/api run dev showed local D1, R2, and Durable Object bindings
• local API smoke: create temporary endpoint, ingest request, list event, show event, fetch body
• restart persistence smoke: restart pnpm --filter @barestash/api run dev, fetch the same persisted event/body again
• local inspection smoke: wrangler d1 execute ... --local --persist-to .wrangler/state and wrangler r2 object get ... --local --persist-to .wrangler/state --pipe
• git diff --check
• just check

Review

• requested a code-reviewer subagent review after changes
• addressed low-severity feedback by narrowing Durable Object persistence wording and expanding the config test to assert local migration runs before dev with the same persisted state path

Risk

• production D1 database_id remains a placeholder and must be replaced when deploying against real Cloudflare resources; this PR targets local development without requiring a Cloudflare account.

[chatgpt-codex-connector]

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