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jackyu66gitandCursor 2fb1dfee14 chore: seal Design Vision v1 and monorepo scaffold

Archive the differentiated YuXinGu product docs, AI engineering system,
design contract, and Go/Vue scaffold. Next execution prioritizes Cece-parity
over early innovation (see .ai/product/STRATEGY.md).

Co-authored-by: Cursor <cursoragent@cursor.com>

2026-08-02 16:00:44 +08:00

843 B

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Database — Golden Rules

Naming

snake_case only for tables and columns.
Good: user_profile, payment_order, user_session.
Forbidden prefixes: tbl_, t_.

Required columns on business tables

id
created_at
updated_at
deleted_at

Types

Never varchar(5000) as a habit.
Prefer bounded varchar(n).
TEXT only when necessary (long content bodies).
Timestamps: timestamptz.

Keys & indexes

Every foreign key indexed.
Unique business keys enforced with UNIQUE.

Migrations

Schema change without migration = incomplete feature.
Migrations live in apps/api/migrations/.
Provide Up and Down when tool supports it.

Soft delete

Default: set deleted_at, do not hard delete user content in MVP.
Queries must filter deleted_at IS NULL unless explicitly including deleted.

843 B Raw Blame History

Database — Golden Rules

Naming

Required columns on business tables

Types

Keys & indexes

Migrations

Soft delete

843 B

Raw Blame History