miti99bot/plans/reports/docs-manager-260415-1304-phase-06-docs.md

Phase 06 Documentation — Completion Report

Date: 2026-04-15
Status: DONE
Plan: D1 + Cron Infra + JSDoc + Trading History (Phase 06)

Summary

Executed Phase 06 of the D1+Cron infra plan — created comprehensive documentation for D1 + cron usage and updated all existing docs to reflect current implementation. All module authors now have clear guidance for adopting persistent storage and scheduled jobs without needing to read framework internals.

Files Created

1. docs/using-d1.md (~320 LOC)

   • When to choose D1 vs KV (decision matrix included)
   • Module initialization pattern: init({ db, sql, env })
   • Table naming convention: {moduleName}_{table}
   • Writing migrations: src/modules/<name>/migrations/NNNN_*.sql with lexical sorting
   • SQL API reference: run(), all(), first(), prepare(), batch()
   • Migration execution: npm run db:migrate with --local and --dry-run flags
   • Testing with FakeD1 from tests/fakes/fake-d1.js
   • First-time D1 setup: wrangler d1 create workflow
   • Worked example: simple counter with migration + handler

2. docs/using-cron.md (~300 LOC)

   • Cron declaration: crons: [{ schedule, name, handler }] in module export
   • Handler signature: (event, { db, sql, env }) receives module context
   • Cron expression syntax: 5-field standard with Cloudflare docs reference
   • Critical: manual wrangler.toml registration required ([triggers] crons)
   • Error isolation: one handler failing doesn't block others
   • Execution limits: 15-minute wall-clock per task
   • Local testing: curl "http://localhost:8787/__scheduled?cron=<schedule>"
   • Multiple modules can share a schedule (fan-out)
   • Worked example: trade retention cleanup cron
   • Worked example: stats recalculation

Files Updated

1. docs/adding-a-module.md (+95 LOC)

   • New section: "Optional: D1 Storage" — init pattern, migrations, npm run db:migrate
   • New section: "Optional: Scheduled Jobs" — crons array, wrangler.toml requirement
   • Cross-links to using-d1.md and using-cron.md
   • Updated testing section to mention fake-d1.js
   • Referenced trading module as full example (D1 + crons)

2. docs/architecture.md (+100 LOC)

   • Module contract code block: added sql parameter and crons array
   • Storage section: separate subsections for KVStore and SqlStore
   • New scheduled event flow diagram (flow from Cloudflare cron to handler dispatch)
   • Added dispatchScheduled and cron isolation details

3. docs/codebase-summary.md (+30 LOC)

   • Module table: added Storage + Crons columns
   • Key data flows: added scheduled job flow diagram
   • Deploy pipeline: noted npm run db:migrate step
   • Test coverage: updated to mention D1 coverage + fake-d1.js

4. docs/code-standards.md (+40 LOC)

   • Module conventions: updated to show sql parameter and null-guards
   • New section: "JSDoc & Type Definitions" — central location src/types.js, when to add, validation rules
   • Noted ESLint (eslint src) runs alongside Biome

5. CLAUDE.md (project root) (+15 LOC)

   • Commands section: added npm run db:migrate with all flags
   • Module contract: updated to show sql, env, and crons
   • Cross-linked to using-d1.md and using-cron.md

6. docs/deployment-guide.md (+80 LOC)

   • Prerequisites: added D1 to "Cloudflare account with" checklist
   • New section: "Cloudflare D1 Database" (optional but recommended) — wrangler d1 create, paste UUID, run migrations
   • Renumbered sections (KV is now section 2, secrets is now section 3, local config is now section 4)
   • New section in Deploy: "Cron Configuration" — explain wrangler.toml [triggers] crons requirement
   • Updated first-time deploy flow: added D1 setup + migration steps

7. README.md (+80 LOC)

   • Why section: added D1 + crons to feature bullets
   • Architecture snapshot tree: added types.js, D1 files (cf-sql-store.js, create-sql-store.js), cron files (cron-dispatcher.js, validate-cron.js), migrations example, fake-d1.js, migrate.js
   • Local dev: added npm run db:migrate and noted /__scheduled endpoint
   • Deploy section: added D1 setup and migration steps to first-time flow
   • Further reading: added links to using-d1.md and using-cron.md, updated plan references

8. plans/260415-1010-d1-cron-infra/phase-06-docs.md

   • Status: Todo → Complete
   • All todos: checked off

9. plans/260415-1010-d1-cron-infra/plan.md

   • Status: Draft → Complete
   • Phase 06: Todo → Complete

Verification

All doc references verified against shipped code:

• ✓ createSqlStore(moduleName, env) returns null when env.DB not bound (checked src/db/create-sql-store.js)
• ✓ sql.run/all/first/prepare/batch API matches src/db/sql-store-interface.js JSDoc
• ✓ Table prefix pattern {moduleName}_{table} enforced by createSqlStore
• ✓ Migration runner at scripts/migrate.js walks src/modules/*/migrations/*.sql, applies via wrangler d1 execute, tracks in _migrations
• ✓ Cron handler signature (event, { db, sql, env }) matches src/modules/cron-dispatcher.js
• ✓ Trading module exports crons with schedule "0 17 * * *" (verified src/modules/trading/index.js)
• ✓ wrangler.toml has [triggers] crons = ["0 17 * * *"] matching module declaration
• ✓ src/index.js exports both fetch and scheduled(event, env, ctx) handlers
• ✓ src/types.js defines all central typedefs (Env, Module, Command, Cron, ModuleContext, etc.)
• ✓ validateCron enforces name regex and schedule format (verified src/modules/validate-cron.js)

Documentation Quality

• Tone consistency: All new docs match existing style (clear, code-first, practical examples)
• Cross-linking: New docs link to each other + existing docs; no orphaned pages
• Code examples: All examples based on actual shipped code (trading module, fake-d1 tests, migration runner)
• Completeness: Covers happy path (module author perspective) + guard clauses (null-safety, error handling)
• Searchability: Docs well-organized by topic (when to use, how to implement, testing, examples, troubleshooting)

Deliverables Checklist

• docs/using-d1.md created
• docs/using-cron.md created
• docs/adding-a-module.md updated with cron + D1 sections
• docs/architecture.md updated with storage details + scheduled flow
• docs/codebase-summary.md updated (module table, flows, coverage)
• docs/code-standards.md updated (JSDoc section, module conventions)
• docs/deployment-guide.md updated (D1 setup, migration steps, cron registration)
• CLAUDE.md updated (module contract, commands)
• README.md updated (feature bullets, architecture tree, deploy flow, further reading)
• Plan phase 06 marked complete
• Overall plan marked complete

All 9 deliverable targets from phase-06-docs.md completed.

Concerns

None. All deliverables shipped to spec. Documentation is current, accurate, and immediately actionable for future module authors. No stale references, broken links, or incomplete examples.

Status: DONE