Ready2Blob/.planning/phases/01-foundation/01-03-SUMMARY.md

phase, plan, subsystem, tags, requires, provides, affects, tech-stack, key-files, key-decisions, patterns-established, requirements-completed, duration, completed

phase	plan	subsystem	tags	requires	provides	affects	tech-stack	key-files	key-decisions	patterns-established	requirements-completed	duration	completed
01-foundation	03	schema	typescript zod validation registry tdd vitest	01-02 (BACKEND_REGISTRY, BackendType, FieldDef — src/schemas/registry.ts)	BACKEND_SCHEMAS constant with Zod schemas for azureblob, s3, s3-compatible (src/schemas/index.ts) BackendFormValues<T> utility type inferring TypeScript type from schema	Phase 3 (form validation — useForm resolver will use BACKEND_SCHEMAS[backendType]) Phase 2 (type-safe form data via BackendFormValues before config generation)	added patterns Programmatic schema derivation: loop over BACKEND_REGISTRY to build z.object() — never hardcode field names in Zod schemas Registry-as-truth invariant: adding a field to BACKEND_REGISTRY automatically adds it to runtime validation	created modified src/schemas/index.ts	buildZodSchema loops over BACKEND_REGISTRY[backendType] — field names never appear in Zod code, only in the registry required: true fields map to z.string().min(1) with label-based error message; optional fields map to z.string().optional() BACKEND_SCHEMAS exported as const object — TypeScript can narrow to the specific backend's schema type at call sites	Schema-from-registry pattern: all Zod shape derivation goes through buildZodSchema(backendType)		1min	2026-03-26

Phase 01 Plan 03: Zod Schema Builder Summary

Programmatic Zod schema builder that derives all validation from BACKEND_REGISTRY — adding a registry field automatically adds it to runtime validation, with no hardcoded field names in Zod code

Performance

• Duration: ~1 min
• Started: 2026-03-26T09:20:32Z
• Completed: 2026-03-26T09:21:21Z
• Tasks: 1
• Files modified: 1

Accomplishments

• buildZodSchema(backendType) derives a z.object() shape entirely from BACKEND_REGISTRY[backendType] — no field names appear in index.ts itself
• Required fields become z.string().min(1, '{label} is required'), optional fields become z.string().optional()
• BACKEND_SCHEMAS exported as a const with typed entries for all three backends
• BackendFormValues<T> utility type infers the TypeScript type from the appropriate schema via z.infer
• All 8 tests in index.test.ts pass GREEN; registry.test.ts (7 tests) remains GREEN — full 15-test count

Task Commits

Each task was committed atomically:

1. Task 1: Implement schema builder and BACKEND_SCHEMAS - eaeae32 (feat)

Plan metadata: (committed after SUMMARY.md — see final commit)

Note: TDD — RED confirmed ("Cannot find module './index'"), then GREEN in single implementation commit.

Files Created/Modified

• src/schemas/index.ts — buildZodSchema function, BACKEND_SCHEMAS constant, BackendFormValues type

Decisions Made

• Used z.string().min(1, ...) for required fields rather than plain z.string() — provides a user-facing error message that includes the field label, useful when this schema is wired to react-hook-form in Phase 3
• as const on BACKEND_SCHEMAS enables TypeScript to narrow the exact schema type per backend key (no ZodObject<any> widening)

Deviations from Plan

None - plan executed exactly as written.

Issues Encountered

None. The only full-suite "failure" (reducer.test.ts) is the intentional Wave 0 RED stub from Plan 02, documented there — not a regression.

User Setup Required

None - no external service configuration required.

Next Phase Readiness

• src/schemas/index.ts ready for Plan 04 context and Phase 3 form wiring
• BACKEND_SCHEMAS[backendType] can be passed directly to zodResolver() from @hookform/resolvers/zod
• BackendFormValues<T> provides the type-safe form data shape for Phase 2 config generation
• Only remaining RED stub: src/store/reducer.test.ts — addressed in Plan 04

---

Phase: 01-foundation Completed: 2026-03-26