From 6f627fe776af9a7656929ee3e6b60e2c575cbc1b Mon Sep 17 00:00:00 2001
From: imbytecat <imbytecat@gmail.com>
Date: Mon, 11 May 2026 20:51:43 +0800
Subject: [PATCH] =?UTF-8?q?docs:=20=E6=9B=B4=E6=96=B0=20MySQL=20=E5=B1=95?=
 =?UTF-8?q?=E7=A4=BA=E7=B3=BB=E7=BB=9F=E8=AF=B4=E6=98=8E?=
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---
 AGENTS.md | 268 ++++++++++++++----------------------------------------
 README.md | 164 ++++++++++++++++-----------------
 2 files changed, 147 insertions(+), 285 deletions(-)

diff --git a/AGENTS.md b/AGENTS.md
index 38af281..61f4a3c 100644
--- a/AGENTS.md
+++ b/AGENTS.md
@@ -1,232 +1,98 @@
 # AGENTS.md
 
-Compact, repo-specific notes for AI agents. Generic language/framework knowledge is omitted — only things that will bite you if you don't know. Pair this with `README.md` (user-facing quick-start + add-a-feature checklist + deploy flow).
+Repo-specific notes for AI agents.
 
-## Stack & runtime
+## Stack
 
-- **Bun-only** (`mise.toml` pins `bun = 1.3.13`). Never invoke `npm`/`npx`/`node`/`yarn`/`pnpm`. Use `bun run <script>` (bare `bun <script>` can collide with Bun built-in subcommands).
-- **Prefer Bun-native APIs over external packages and `node:*` polyfills.** UUIDv7 in app code → `Bun.randomUUIDv7()` (not the `uuid` package); DB primary keys are a separate matter — those go through PG18's `uuidv7()`, see "Drizzle" section. SHA-256 → `Bun.CryptoHasher.hash('sha256', s, 'hex')` (not `node:crypto.createHash`); short sleeps → `Bun.sleep(ms)` (not raw `setTimeout` with promise wrapping); file I/O in build scripts → `Bun.file` / `Bun.write` are fine. The runtime is Bun, the deployment target is Bun, the test runner is Bun — there is no "portability" concern that would justify dragging in npm packages or Node compat shims for things Bun ships natively.
-- TanStack Start (React 19 SSR, file-routed) + Vite 8 + Nitro (nightly, preset `bun`). Dev server defaults to Vite's port (3000); not pinned, override via `vite dev --port <n>` if you need to.
-- **PostgreSQL 18+ only** (`compose.yaml` pins `postgres:18-alpine`). The starter relies on PG18's built-in `uuidv7()` function for primary-key generation — see "Drizzle" section. Do not soften this to support older PG; if you need PG <18 compatibility, fork and reintroduce app-side UUIDv7 (e.g. `Bun.randomUUIDv7()` or the `uuid` package) yourself.
-- **Drizzle ORM `0.45.2` (0.x, NOT 1.0 beta)** — see "Drizzle" section, this matters a lot.
-- ORPC (contract-first), TanStack Query v5, Tailwind v4.
-- **Logging via [LogTape](https://logtape.org/)** (zero-dep, runtime-agnostic) — see "Logging" section. `console.*` is forbidden in business code.
+- Bun-only (`mise.toml` pins `bun = 1.3.13`). Do not use `npm` / `npx` / `node` / `yarn` / `pnpm`.
+- TanStack Start + React 19 SSR + Vite + Nitro `bun` preset.
+- ORPC contract-first API, TanStack Query v5, Tailwind v4.
+- Business data source is the customer's existing **MySQL** database. This app is read-only display software.
+- There is no PostgreSQL, Drizzle schema, embedded migration flow, or local DB mutation path in this project now.
+- `scripts/seed.ts` is the only local development helper allowed to create/truncate/insert sample data. The app runtime must stay read-only.
 
 ## Scripts
 
 ```bash
-bun run dev          # bunx --bun vite dev  (localhost:3000)
-bun run build        # bunx --bun vite build → .output/
-bun run compile      # bun scripts/compile.ts → out/server-<target> (standalone CLI binary)
-bun run cli <cmd>    # bun src/bin.ts <cmd>  — run a CLI subcommand in source (dev)
-bun run typecheck    # tsc --noEmit
-bun run test         # bun test  — runs all *.test.ts files (colocated with source)
-bun run fix          # biome check --write  (lint + format + organize imports)
-bun run db:push      # dev only — push schema to DB, no migration file
-bun run db:generate  # drizzle-kit generate && scripts/embed-migrations.ts (regenerates migrations.gen.ts)
-bun run db:embed     # scripts/embed-migrations.ts only — regenerate migrations.gen.ts from ./drizzle/
-bun run db:migrate   # apply migrations via drizzle-kit (local dev convenience; prod uses ./server migrate)
-bun run db:studio    # Drizzle Studio
+bun run dev
+bun run build
+bun run compile
+bun run seed
+bun run typecheck
+bun run test
+bun run fix
 ```
 
-Cross-compile targets live under `compile:{linux,darwin,windows}[:arch]`. `scripts/compile.ts` accepts `--target bun-<os>-<arch>`; default derives from host.
+Before shipping: `bun run fix && bun run typecheck && bun run test && bun run build`.
 
-Before committing: `bun run fix && bun run typecheck && bun run test`. No CI, no pre-commit hooks, no lint-staged — so these are on you.
+## MySQL Source
 
-## Drizzle (v0.x — critical)
+Environment variable:
 
-**Why it matters:** the project was on 1.0 beta and was rolled back. Online docs default to 1.0 beta APIs that do NOT exist here. If typecheck complains, you are probably importing a 1.0 beta API.
-
-- Driver: `drizzle-orm/postgres-js`. Do NOT use `drizzle-orm/bun-sql`.
-- `drizzle()` is called with `{ connection, schema }` where `schema = import * as schema from '@/server/db/schema'`. There is **no `relations.ts`** and **no `defineRelations`** in 0.x.
-- Zod generators live in the separate `drizzle-zod` package (`^0.8.3`). Import from `drizzle-zod`, **not** `drizzle-orm/zod` (that subpath only exists in 1.0 beta).
-- Relational queries use **RQB v1 callback syntax**:
-  ```ts
-  db.query.todoTable.findMany({
-    orderBy: (t, { desc }) => desc(t.createdAt),
-  })
-  ```
-  Do NOT use the v2 object form (`orderBy: { createdAt: 'desc' }`, `where: { id }`) — it won't type-check.
-- To add relations later: declare per-table with `relations()` from `drizzle-orm` and export them from the same file as the table; they get picked up automatically because `index.ts` does `drizzle({ schema })` via `import *`.
-- Every table must spread `...generatedFields` from `src/server/db/fields.ts` (`id uuid PRIMARY KEY DEFAULT uuidv7() NOT NULL` — **Postgres-side generation**, requires PG18+; `createdAt`, `updatedAt` with `$onUpdateFn`). The DB is the single source of UUIDv7 truth: monotonic per cluster, uses DB clock, no app-side round-trip. **Do not reintroduce `$defaultFn(() => Bun.randomUUIDv7())`** — the SQL default is what the migration emits and what `drizzle-zod` reads as "optional in insert schema". `generatedFieldKeys` is hand-written and uses `satisfies Record<keyof typeof generatedFields, true>` so any field-key drift fails typecheck; it feeds `createInsertSchema(...).omit(...)` / `createUpdateSchema(...).omit(...)`.
-- `src/server/db/index.ts` exports a module-level `const db = drizzle(...)` — not a lazy singleton. On Bun this is a long-lived process, so top-level side effects are fine and requested. Don't reintroduce `getDB/closeDB` ceremony; the Nitro shutdown plugin calls `db.$client.end()` directly. (Cloudflare Workers would need per-request init — we don't support that deployment target.)
-- `drizzle.config.ts` runs outside Vite — `@/*` path aliases do NOT resolve there. It currently does `import { env } from './src/env'` (relative). Preserve that.
-- **Migrations are embedded in the binary, not read from disk.** `bun run db:generate` chains `drizzle-kit generate && bun scripts/embed-migrations.ts`, which regenerates `src/server/db/migrations.gen.ts` (committed, AUTO-GENERATED header) by `import sql_<idx> from '#drizzle/<tag>.sql' with { type: 'text' }`. `src/cli/migrate.ts` reads `embeddedMigrations`, **validates SHA-256 hash of every already-applied migration against the embedded SQL** (rejects schema drift if anyone edited an applied migration), then applies pending entries via `db.execute(sql\`...\`)` + `db.transaction(...)` against the `drizzle.__drizzle_migrations` book-keeping table — public APIs only, no `db.dialect`/`db.session` (those are `@internal`). Each migration is split on `--> statement-breakpoint`; empty fragments are trimmed and skipped. Dev helpers `db:push` / `drizzle-kit migrate` still read `./drizzle/`.
-
-## CLI & single-binary deploy
-
-`bun run compile` produces a single executable that dispatches subcommands via [citty](https://github.com/unjs/citty). Entry is `src/bin.ts`; subcommands live in `src/cli/`.
-
-```
-./server [serve]   # default — start the HTTP server
-./server migrate   # apply embedded migrations
-./server --help
+```bash
+DATABASE_URL=mysql://user:password@host:3306/database
 ```
 
-**Nitro side-effect pitfall (important).** Under the `bun` preset, `.output/server/index.mjs` has a top-level `serve(...)` call — merely importing it starts the HTTP server. `src/bin.ts` therefore must not eager-import any subcommand module, and `src/cli/serve.ts` reaches `.output/server/index.mjs` through the `src/cli/_serve-nitro.mjs` bridge (with `_serve-nitro.d.mts` for types, since `.output/` doesn't exist at typecheck time). Citty's `subCommands: { x: () => import('...') }` lazy-loader is what keeps `--help` and `migrate` from booting the server.
+Customer table: `ls_battery_info`.
 
-**Citty eager-loads subcommand modules for `--help`** to read each subcommand's `meta`. So every `src/cli/*.ts` module body must be side-effect-free: do NOT static-import `@/env`, `@/server/db/*`, or anything that reads env at module-load time. Use `await import('@/env')` inside `run()`. Otherwise `./server --help` (or any subcommand's help) will fail with env validation errors before printing.
+| Column | Type | Meaning |
+| --- | --- | --- |
+| `id` | `int(11)` auto increment | primary key |
+| `user_id` | `int(11)` | user ID |
+| `mac` | `varchar(50)` | device MAC |
+| `dev_model` | `varchar(20)` | device model |
+| `dev_name` | `varchar(50)` | device name |
+| `is_low_power` | `varchar(10)` | `true` / `false` |
+| `power_status` | `tinyint(4)` | `0` not charging, `1` charging, `2` full |
+| `power` | `tinyint(4)` | current battery `0~100` |
+| `create_time` | `datetime` | created time |
+| `remark` | `varchar(500)` | nullable remark |
 
-Add a subcommand: drop a file in `src/cli/` that default-exports `defineCommand({...})`, then register it in `src/bin.ts`'s `subCommands` with a `() => import(...)` thunk. Keep top-level imports limited to `citty` + Node built-ins; pull env / db / etc. via `await import(...)` inside `run()`.
+Rules:
 
-**Deploy flow is always migrate-then-serve.** Migrations are embedded in the binary (see "Drizzle" section), so the binary is the only artifact — no `./drizzle/` directory at runtime. Dockerfile copies just `./server`. `compose.yaml` models the pattern with a one-shot `migrate` service that `app` `depends_on: service_completed_successfully`. On k8s, run `./server migrate` as an initContainer or a Helm `pre-upgrade` Job; run `./server` (= `./server serve`) as the main container.
+- Only run `SELECT` queries against this table. Do not insert, update, delete, migrate, or create tables.
+- Do not add mock/fallback rows. If MySQL is unavailable, surface the error.
+- `is_low_power` is stored as a string and normalized to boolean in `src/domain/battery.ts`.
+- `power_status` is normalized to `0 | 1 | 2`.
+- Without `mac`, battery list queries return the latest record per `mac`.
+- With `mac`, battery list queries return history ordered by `create_time DESC, id DESC`, limited to 500 rows.
 
-## Compile flags
-
-`scripts/compile.ts` builds with `--minify --bytecode --sourcemap=inline`:
-
-- **`bytecode`** — pre-compiles JS to bytecode and embeds it in the binary; ~2x startup on app-sized binaries (Bun docs benchmark). Requires `--compile`; top-level `await` must live inside `async` functions (it already does in this repo).
-- **`minify`** — shrinks the binary and the bytecode it derives from.
-- **`sourcemap: 'inline'`** — embeds the source map in the binary so error stack traces stay decodable. Bun also writes a residual `out/bin.js.map` next to the output; `scripts/compile.ts` removes it so the binary is the only artifact.
-
-## ORPC
-
-Contract → Router → Handler → Client, all type-safe from a single contract.
-
-- `os` is built in `src/server/api/server.ts` via `implement(contract).$context<BaseContext>()`. **Always import `os` from `@/server/api/server`**, never from `@orpc/server` directly. `ORPCError`, `onError`, `ValidationError` come from `@orpc/server`.
-- Contracts (`src/server/api/contracts/*.contract.ts`) generate Zod from Drizzle tables via `drizzle-zod`:
-  ```ts
-  const insertSchema = createInsertSchema(todoTable).omit(generatedFieldKeys)
-  ```
-  Barrel-aggregated in `contracts/index.ts` as `export const contract = { todo }`.
-- Routers (`src/server/api/routers/*.router.ts`) import `db` directly from `@/server/db` in their handlers. There is **no `middlewares/` directory** by default — `db` doesn't need one (module-level const). When you actually need per-request context (auth, tenant, rate-limit), create `src/server/api/middlewares/<name>.middleware.ts` with `os.middleware(...)` and extend `BaseContext` in `context.ts`.
-- **Interceptors are attached at the handler level, not in `server.ts` and not on `os`.** Both `src/routes/api/rpc.$.ts` (`RPCHandler`) and `src/routes/api/$.ts` (`OpenAPIHandler`) register `[onError(logError)]` (server) and `[onError(handleValidationError)]` (client). The validation interceptor rewrites `BAD_REQUEST + ValidationError` into `INPUT_VALIDATION_FAILED` (422) and output validation errors into `OUTPUT_VALIDATION_FAILED`. `logError` resolves a `getLogger(['api'])` LogTape category — never `console.*` directly. See "Logging" section.
-- OpenAPI/Scalar: docs at `/api/docs`, spec at `/api/spec.json` (handler prefix `/api`, plugin paths `/docs` and `/spec.json`).
-- **SSR isomorphism** (`src/client/orpc.ts`): `createIsomorphicFn().server(createRouterClient(...)).client(new RPCLink(...))`. Server branch reads `getRequestHeaders()` for context; client branch POSTs to `${origin}/api/rpc`.
-- **Mutation invalidation is colocated at the call site** via `mutationOptions({ onSuccess })`, not in `src/client/orpc.ts`. `orpc` in `src/client/orpc.ts` is a plain `createTanstackQueryUtils(client)` — no `experimental_defaults`. Per-feature query helpers live in `src/client/queries/<feature>.ts` (e.g. `useInvalidateTodos`); routes/components compose those hooks rather than holding query keys inline. See `src/client/queries/todo.ts` + `src/routes/index.tsx` for the canonical shape.
-- SSR prefetch in route loaders: `await context.queryClient.ensureQueryData(orpc.todo.list.queryOptions())`. Components use `useSuspenseQuery(orpc.feature.list.queryOptions())`.
-
-## Code style (Biome)
-
-- 2-space, LF, single quotes, **semicolons as-needed** (omitted unless required), 120-col, arrow parens always, `useArrowFunction: "error"` (covers function *expressions* only). Also `noReactPropAssignments: "error"`.
-- Lint domains enabled (Biome 2.4): `types: "all"` (catches `noFloatingPromises`, `noMisusedPromises`, `useAwaitThenable`, `noUnnecessaryConditions` — TS-aware async/promise traps), `drizzle: "recommended"`, `react: "recommended"`. `noImportCycles` is on under `suspicious`.
-- **Route components use `function Foo()` declarations**, placed below the `Route` config so the file reads top-down (route on top, component below). This is the official TanStack Router/Start pattern and relies on hoisting — `const Foo = () => {}` would TDZ-error when referenced from `createFileRoute({ component: Foo })` above it. Inline arrows are fine for trivial leaf components (e.g. plain redirect routes). Non-route components (UI primitives in `src/components/`) use `const Foo = () => {}`.
-- Imports are auto-organized into two groups (external, then `@/*`), each alphabetical, with `import type` interleaved (NOT a separate group). `bun run fix` handles this; don't hand-sort.
-- Files: utils `kebab-case.ts`, components `PascalCase.tsx`.
-- `routeTree.gen.ts` is generated — ignored by Biome, never edit.
-
-## Testing
-
-`bun test` runs all `*.test.ts` files. Tests are colocated next to the source they exercise (e.g. `src/server/api/contracts/todo.contract.test.ts`). Use `import { describe, expect, test } from 'bun:test'`. The `@/*` alias resolves in tests via tsconfig paths. No Vitest, no Jest, no separate test config — keep it that way unless you need a browser/JSDOM environment.
-
-## Endpoints
-
-- `/` — Todos UI (file route).
-- `/health` — bare `GET` returning `ok` (200, `text/plain`). Liveness only — no DB check, so it stays green even when Postgres is down. Add a separate `/ready` if you ever need readiness.
-- `/api/rpc` — ORPC RPC handler (POST).
-- `/api/*` — ORPC OpenAPI handler. Docs at `/api/docs`, spec at `/api/spec.json`.
-
-## TypeScript
-
-Strict mode, plus `noUncheckedIndexedAccess`, `verbatimModuleSyntax`, `erasableSyntaxOnly`, `noImplicitOverride`. No `as any` / `@ts-ignore` / `@ts-expect-error`.
-
-Path alias: `@/* → src/*`. For files outside `src/` use `@/../<file>` (example in the codebase: `src/routes/api/$.ts` imports `name, version` from `@/../package.json`).
-
-## Env
-
-`src/env.ts` via `@t3-oss/env-core`. Server: `DATABASE_URL` (required, `z.url()`), `LOG_LEVEL` (`trace|debug|info|warning|error|fatal`, default `info`), `LOG_FORMAT` (`pretty|json`, default = TTY ? `pretty` : `json`), `LOG_DB` (`stringbool`, default `false` — flips on Drizzle SQL query logging). `client: {}` is empty by default — any client-side env must be `VITE_`-prefixed. Never commit `.env`.
-
-## Logging
-
-All server-side logging goes through `src/server/logger.ts`, a thin wrapper over [LogTape](https://logtape.org/). The module configures LogTape on import (via `configureSync`, no top-level await — works under `--bytecode`) and re-exports `getLogger`.
-
-```ts
-import { getLogger } from '@/server/logger'
-const logger = getLogger(['feature', 'subsystem'])
-logger.info('Created todo {id}', { id })
-logger.error('DB write failed', { error })
-```
-
-- Categories are hierarchical arrays — they show up as dot-paths in JSON output (`"logger":"feature.subsystem"`) and let you filter by prefix when shipping logs.
-- The `{name}` placeholders are for **primitive** values you want rendered inline (numbers, short strings, IDs). For objects, errors, and anything multi-field, omit the placeholder and just pass the value in properties — `logger.error('Auth failed', { error, userId })` keeps the message clean while properties stay structured. Never string-concatenate or template-literal — that defeats structured logging.
-- Format is `pretty` (icons + ANSI) on TTY, `json` (one-line JSON) when piped — perfect for Loki/Datadog/CloudWatch ingestion. Override with `LOG_FORMAT`.
-- Drizzle SQL queries are logged at `info` under category `['db']` when `LOG_DB=true`, via `@logtape/drizzle-orm`'s `DrizzleLogger` adapter (constructed in `src/server/db/index.ts`). The `info` level is intentional: flipping `LOG_DB=true` alone is enough — no need to also lower `LOG_LEVEL`.
-- `src/server/api/interceptors.ts` calls `getLogger(['api']).error(...)` from `logError`. CLI subcommands lazy-import the logger inside `run()` — they are still required to be side-effect-free at module top (citty eager-loads for `--help`).
-- Bun-specific: `process.env.NODE_ENV` is **inlined at build time** by `bun build --minify` — do NOT branch on it for logger config (use `process.stdout.isTTY` or `LOG_FORMAT` instead). pino is unusable here because its worker-thread transports crash inside the `/$bunfs/` virtual filesystem of compiled binaries; LogTape has zero workers and zero dynamic require, so it ships cleanly into the single binary.
-
-## Docker / deploy
-
-- Multi-stage: `oven/bun:1.3.13` builds and runs `bun scripts/compile.ts`, then `gcr.io/distroless/cc-debian13:nonroot` runs the single `./server` binary. The `cc` (glibc) distroless variant is required because Bun's compiled binary links glibc.
-- `compose.yaml`: one-shot `migrate` service runs `./server migrate` with `restart: "no"`, then `app` starts (`depends_on: migrate: service_completed_successfully`). `DATABASE_URL=postgres://postgres:postgres@db:5432/postgres` for both.
-- Distroless has no shell, so any init-then-serve pattern must use exec-form `command: [...]`, not `sh -c`.
-
-## Layout (non-obvious parts only)
+## Layout
 
 ```
 src/
-├── bin.ts                      # citty entry — keep imports minimal (see "CLI" section)
-├── client/
-│   ├── orpc.ts                 # isomorphic ORPC client + TanStack Query utils (no global invalidation defaults)
-│   └── queries/                # per-feature query hooks: keys, options, `useInvalidate<Feature>` helpers
-├── cli/                        # CLI subcommands (loaded lazily by src/bin.ts via citty)
-│   ├── serve.ts                # `./server serve` — imports the Nitro bridge on demand
-│   ├── migrate.ts              # `./server migrate` — applies embedded migrations via public `db.execute(sql)` + `db.transaction()`
-│   ├── _serve-nitro.mjs        # bridge: `import('#server')` (subpath import → .output/server/index.mjs)
-│   └── _serve-nitro.d.mts      # types for the bridge (build output has no .d.ts)
 ├── routes/
-│   ├── __root.tsx              # root route + RootDocument shell
-│   ├── index.tsx               # Todos UI
-│   ├── health.ts               # GET /health → "ok" (no DB)
-│   └── api/
-│       ├── $.ts                # OpenAPI + Scalar; interceptors registered here
-│       └── rpc.$.ts            # RPC; interceptors registered here
+│   ├── index.tsx       # SoH dashboard
+│   ├── batteries.tsx   # battery monitor page
+│   └── api/            # ORPC handlers
 ├── server/
-│   ├── logger.ts               # LogTape `configureSync` + `getLogger` re-export — the only log entrypoint
-│   ├── api/
-│   │   ├── server.ts           # the ONLY place to build `os`
-│   │   ├── context.ts          # BaseContext (add per-request fields when you add middlewares)
-│   │   ├── interceptors.ts     # logError (→ logger), handleValidationError
-│   │   ├── types.ts            # Router{Client,Inputs,Outputs} derived from Contract
-│   │   ├── contracts/          # Zod schemas from Drizzle tables (barrel: contract); colocated *.test.ts
-│   │   └── routers/            # os.* handlers (barrel: router) — import db directly
-│   ├── db/
-│   │   ├── index.ts            # module-level `export const db = drizzle({...})`
-│   │   ├── fields.ts           # generatedFields (id/createdAt/updatedAt) + generatedFieldKeys
-│   │   ├── migrations.gen.ts   # AUTO-GENERATED by `bun run db:embed`; embeds ./drizzle/*.sql via `with { type: 'text' }`
-│   │   ├── sql.d.ts            # ambient `declare module '*.sql'` — load-bearing for `with { type: 'text' }` imports in migrations.gen.ts
-│   │   └── schema/             # pgTable definitions; also put `relations()` here when adding
-│   └── plugins/
-│       └── shutdown.ts         # SIGINT/SIGTERM → db.$client.end() with 500ms delay (prod only)
-├── components/                 # non-route UI primitives (PascalCase, arrow const)
-├── env.ts                      # t3-oss env validation
-├── router.tsx                  # QueryClient + setupRouterSsrQueryIntegration
-├── styles.css                  # Tailwind v4 entry
-└── routeTree.gen.ts            # auto-generated, do not edit
-scripts/
-├── compile.ts                  # `bun build --compile` driver; resolves --target; sets minify/bytecode/sourcemap
-└── embed-migrations.ts         # codegen: scans ./drizzle/meta/_journal.json → src/server/db/migrations.gen.ts
-drizzle/                        # SQL migrations (source of truth for `db:generate`; not shipped in binary)
+│   ├── api/            # contracts / routers / interceptors
+│   └── battery/mysql.ts
+├── domain/battery.ts
+├── client/orpc.ts
+└── styles.css
 ```
 
-Nitro plugins are wired in `vite.config.ts` (`nitro({ plugins: [...] })`), not via a Nitro config file.
+## ORPC
 
-## Don'ts (specific, non-obvious)
+- Contracts live in `src/server/api/contracts/`.
+- Routers live in `src/server/api/routers/`.
+- Use `os` from `@/server/api/server`.
+- Current business API:
+  - `battery.dashboard`
+  - `battery.batteries`
 
-- **Don't run `bun run db:generate` (or `drizzle-kit generate`) as an AI agent.** Migration generation is reserved for the human. Make schema changes in `src/server/db/schema/*` + `src/server/db/fields.ts`, push the code changes, and stop — the human will run `bun run db:generate` and commit the resulting `drizzle/*.sql` + `src/server/db/migrations.gen.ts` themselves. (`bun run db:embed` is also off-limits because it's the codegen tail of `db:generate`.)
-- Don't edit `routeTree.gen.ts` or `src/server/db/migrations.gen.ts`.
-- Don't eager-import anything from `.output/` in `src/bin.ts` or any module it statically imports — it starts the HTTP server as a side effect. Subcommands must be lazy via citty's `() => import(...)` thunks.
-- Don't re-add an auto-migrate Nitro plugin. Migrations are an explicit deploy step via `./server migrate`.
-- Don't reach into `db.dialect`/`db.session` from `migrate.ts` — they're `@internal`. The current implementation uses public `db.execute(sql)` + `db.transaction(...)` against the documented `drizzle.__drizzle_migrations` schema.
-- Don't add `./drizzle/` back to the runtime image — migrations are embedded into the binary.
-- Don't reintroduce `getDB/closeDB` or any "lazy DB init" pattern — that's a Cloudflare Workers shape; we deploy on Bun processes.
-- Don't import `os` from `@orpc/server` in middleware/routers — always `@/server/api/server`.
-- Don't import from `drizzle-orm/zod` (1.0 beta only). Use `drizzle-zod`.
-- Don't use RQB v2 object syntax, `defineRelations`, or pass `relations` to `drizzle()`. All are 1.0 beta.
-- Don't use `drizzle-orm/bun-sql`.
-- Don't use `@/*` aliases in `drizzle.config.ts`.
-- Don't commit `.env`.
+## CLI And Deploy
 
-## Room-to-grow rules (discipline for the first real feature)
+- `src/bin.ts` must keep static imports minimal. Nitro's bun preset starts the server as a side effect when `.output/server/index.mjs` is imported.
+- `serve` is lazy-loaded via citty.
+- `bun run compile` produces `out/server-<target>`.
+- Runtime artifact is a single binary plus `DATABASE_URL` configuration.
 
-These keep the starter from setting bad precedents as it grows. Append, don't restructure.
+## Code Style
 
-1. Per-feature client query code — keys, options, `useInvalidate<Feature>` helpers — lives in `src/client/queries/<feature>.ts`. Routes/components compose these hooks; they don't hold query keys inline.
-2. Mutation invalidation stays explicit at the mutation call site (`mutationOptions({ onSuccess })`) or in a feature query helper. Do not reintroduce global `experimental_defaults` or any implicit cache policy.
-3. Client state defaults to route/component local state. Create a store (zustand or equivalent) only when state is shared across routes or needs persistence.
-4. Middlewares (`src/server/api/middlewares/<name>.middleware.ts`) derive request-scoped context or gate access. They do NOT orchestrate business flow, hold side effects, or replace handlers/services.
-5. Interceptors (`src/server/api/interceptors.ts`) do cross-cutting error logging, transport normalization, and validation rewrites. They do NOT read business data.
-6. One file per Drizzle table. Relations live in the same file and are exported as `<entity>Relations`. No global `relations.ts`.
-7. One router file per feature (`routers/<feature>.router.ts`). Only introduce `routers/<domain>/index.ts` when a domain grows past ~5 router files or needs shared domain helpers.
-8. All server-side logging goes through `getLogger([...])` from `@/server/logger`. Use a hierarchical category (`['api']`, `['db']`, `['cli', 'migrate']`, etc.) — these become dot-paths in JSON output and let you filter by prefix. Use the `{name}` placeholder + properties form, not string interpolation. `console.*` is forbidden in business code.
-9. CLI subcommand modules keep top-level imports to `citty` + Node built-ins. Env, db, and server code are `await import(...)`-ed inside `run()` (see `src/bin.ts` comment for why).
-10. Every new business feature ships with at least one `bun test` covering a contract schema, a pure helper, or a router behavior.
+- 2-space indentation, LF, single quotes, semicolons as-needed, 120-column line width.
+- Route components use `function Foo()` declarations below route config.
+- No `console.*` in business code; use `getLogger([...])` from `@/server/logger` if logging is needed.
+- No `as any`, `@ts-ignore`, or `@ts-expect-error`.
+- Do not edit `src/routeTree.gen.ts` manually.
diff --git a/README.md b/README.md
index 0eef03c..867be17 100644
--- a/README.md
+++ b/README.md
@@ -1,112 +1,108 @@
-# fullstack-starter
+# battery-soh
 
-一个**单二进制**的全栈应用 starter——`bun run compile` 出来的 `./server` 文件就是你要部署的全部产物，自带 HTTP 服务、SSR、API、嵌入式 SQL 迁移，运行时不依赖 Node、不依赖源码、不依赖外部 migration 目录。
+一个基于 **Bun + TanStack Start + ORPC** 的电池健康展示系统。应用会被打包成单个二进制文件，前端页面、SSR 服务和 ORPC API 一起发布；业务数据只读接入甲方现有 MySQL 表 `ls_battery_info`，本项目不写入、不迁移、不修改甲方数据库。
 
-技术栈：Bun · TanStack Start (React 19 SSR) · ORPC（契约优先 API）· Drizzle ORM · PostgreSQL 18+ · Tailwind v4 · Biome。
+## 数据源
 
-## 为什么用这个
+甲方提供的只读表结构：
 
-- **部署最简**：发布只拷一个二进制文件。先 `./server migrate` 再 `./server`，完事。
-- **契约优先**：在 `*.contract.ts` 用 Zod 定义一次，前端、后端、OpenAPI 文档自动同步。
-- **类型严格**：TypeScript strict，杜绝 `any` / `@ts-ignore` / `as any` 等类型逃逸。
-- **开箱可跑**：路径别名、文件路由、ORPC 接线、Tailwind、热重载、错误页全部预接好。
+| 字段名 | 数据类型 | 说明 |
+| --- | --- | --- |
+| `id` | `int(11)` 自增 | 主键 ID |
+| `user_id` | `int(11)` | 用户 ID |
+| `mac` | `varchar(50)` | 设备 MAC |
+| `dev_model` | `varchar(20)` | 设备型号 |
+| `dev_name` | `varchar(50)` | 设备名称 |
+| `is_low_power` | `varchar(10)` | 是否低电量：`true` / `false` |
+| `power_status` | `tinyint(4)` | `0` 未充电，`1` 正在充电，`2` 充电完成 |
+| `power` | `tinyint(4)` | 当前电量 `0~100` |
+| `create_time` | `datetime` | 创建时间 |
+| `remark` | `varchar(500)` | 备注，可空 |
+
+环境变量：
+
+```bash
+DATABASE_URL=mysql://user:password@host:3306/database
+```
 
 ## 快速开始
 
-> **需要 PostgreSQL 18+**——schema 用 PG 原生的 `uuidv7()` 生成主键（`compose.yaml` 已锁 `postgres:18-alpine`）。要兼容更老的 PG，把 `src/server/db/fields.ts` 里的 `default(sql\`uuidv7()\`)` 换成 `$defaultFn(() => Bun.randomUUIDv7())`，再跑 `bun run db:generate`。
-
 ```bash
-cp .env.example .env        # 把里面的 DATABASE_URL 改成你的 Postgres
+cp .env.example .env
 bun install
-bun run db:push             # 开发期：把 schema 直接同步到 DB（不写 migration 文件）
-bun run dev                 # http://localhost:3000
+bun run dev
 ```
 
-打开浏览器：
-
-- `http://localhost:3000/` — Todo 示例页
-- `http://localhost:3000/api/docs` — Scalar 渲染的 API 文档
-
-## 目录结构（你需要关心的部分）
-
-```
-src/
-├── routes/                 # 文件路由：页面 + API 端点
-├── server/
-│   ├── api/
-│   │   ├── contracts/      # Zod 契约（client / server 共享）
-│   │   └── routers/        # 业务实现
-│   └── db/                 # Drizzle schema + 嵌入式 migrations
-├── client/                 # 前端 hooks、ORPC 客户端
-└── components/             # UI 组件
-```
-
-## 加一个功能（以 `post` 为例）
-
-每一步都很短，按顺序填即可：
-
-1. **建表**：`src/server/db/schema/post.ts` 定义 `postTable`，记得展开 `...generatedFields`（自动注入 `id` / `createdAt` / `updatedAt`）。
-2. **导出表**：在 `src/server/db/schema/index.ts` 加 `export * from './post'`。
-3. **写契约**：`src/server/api/contracts/post.contract.ts` 用 `drizzle-zod` 从表派生 Zod schema。
-4. **挂契约**：在 `src/server/api/contracts/index.ts` 把 `post` 加进 `contract` 对象。
-5. **写实现**：`src/server/api/routers/post.router.ts` 实现 `os.post.*.handler(...)`。
-6. **挂路由**：在 `src/server/api/routers/index.ts` 把 `post` 加进 `router` 对象。
-7. **写前端 hook**：`src/client/queries/post.ts` 导出 `useInvalidatePosts` 等失效辅助。
-8. **写页面**：`src/routes/<page>.tsx` 用 `useSuspenseQuery` 读、`mutate` 写；mutation 的 `onSuccess` 调用第 7 步的 helper。
-9. **生成 migration**：`bun run db:generate` 把 SQL 写到 `./drizzle/` 并嵌入二进制。
-
-完工。`bun run dev` 已自动热重载。
-
-## 部署
-
-**永远先 migrate 再 serve**。Migration 已嵌入二进制；部署只发一个 `./server` 文件。
-
-```bash
-./server migrate            # 应用嵌入式 migration（用 $DATABASE_URL）
-./server                    # 启动 HTTP 服务（默认子命令）
-./server --help             # 列出所有子命令
-```
-
-仓库自带 `compose.yaml`（一次性 `migrate` 服务先跑完，再启动 `app`）：
+如果甲方暂时没有提供数据库连接，可以用 Docker Compose 启动本地 MySQL 并填充示例数据：
 
 ```bash
 docker compose up --build
 ```
 
-Kubernetes 上：把 `./server migrate` 放进 initContainer 或 Helm `pre-upgrade` Job，主容器跑 `./server`。
+Compose 会启动三个服务：
 
-## 脚本一览
+- `db`：本地 MySQL 8.4
+- `seed`：执行 `bun run seed`，用 Drizzle MySQL schema + `drizzle-seed` 重置本地 `ls_battery_info` 并写入示例数据
+- `app`：使用同一个 `DATABASE_URL` 启动单二进制应用
+
+也可以手动 seed 本地库：
+
+```bash
+DATABASE_URL=mysql://battery:battery@localhost:3306/battery_soh bun run seed
+```
+
+`seed` 是本地开发/验收脚本，会建表并重置示例数据；应用运行时仍然只执行 `SELECT`，不会写入数据库。
+
+打开浏览器：
+
+- `http://localhost:3000/`：SoH 预测与风险洞察看板
+- `http://localhost:3000/batteries`：设备电池实时状态
+- `http://localhost:3000/api/docs`：Scalar 渲染的 ORPC OpenAPI 文档
+
+## 架构
+
+```
+src/
+├── routes/                 # TanStack Start 文件路由：页面 + API 端点
+├── server/
+│   ├── api/                # ORPC contract / router
+│   └── battery/mysql.ts    # 甲方 MySQL 只读查询
+├── domain/battery.ts       # 电池领域类型、归一化、展示聚合
+├── client/orpc.ts          # isomorphic ORPC client
+└── styles.css              # Tailwind v4 entry
+```
+
+接口保持模板里的 ORPC 模式：
+
+- `battery.dashboard`：读取每个 `mac` 的最新记录并生成看板聚合数据
+- `battery.batteries`：无 `mac` 时返回每台设备最新记录；带 `mac` 时返回该设备历史记录，按 `create_time desc` 限制 500 条
+
+所有业务查询都是 `SELECT`，没有 mutation，也没有 mock/fallback 数据。
+
+## 部署
+
+```bash
+bun run build
+bun run compile
+./out/server-<target>
+```
+
+Docker 镜像会在构建阶段产出单个 `./server` 二进制，运行阶段只需要配置 `DATABASE_URL`。
+
+## 脚本
 
 | 命令 | 作用 |
 | --- | --- |
-| `bun run dev` | Vite 开发服务器（默认端口 3000） |
-| `bun run build` | 构建到 `.output/`（`bun run compile` 会用到） |
+| `bun run dev` | Vite 开发服务器 |
+| `bun run build` | 构建到 `.output/` |
 | `bun run compile` | 生成单二进制 `out/server-<target>` |
+| `bun run seed` | 为本地 MySQL 创建甲方表并填充示例数据 |
 | `bun run typecheck` | TypeScript 类型检查 |
 | `bun run test` | 运行所有 `*.test.ts` |
 | `bun run fix` | Biome 格式化 + lint + 整理 imports |
-| `bun run db:push` | 开发期：直接同步 schema 到 DB（不写 migration 文件） |
-| `bun run db:generate` | 写 SQL migration 到 `./drizzle/` 并嵌入二进制 |
-| `bun run db:embed` | 仅重生 `migrations.gen.ts`（手改了 `./drizzle/*.sql` 后用） |
-| `bun run db:migrate` | 通过 drizzle-kit 在本地应用 migration（开发便利） |
-| `bun run db:studio` | Drizzle Studio（可视化 DB） |
 
-跨平台编译：`bun run compile:{linux,darwin,windows}[:arch]`。
-
-## 端点
-
-| 路径 | 用途 |
-| --- | --- |
-| `/` | Todo 示例 UI |
-| `/health` | 存活探针（不查 DB，纯文本 `ok`） |
-| `/api/rpc` | ORPC RPC 端点（client 直连） |
-| `/api/docs` | Scalar 渲染的 API 文档 |
-| `/api/spec.json` | OpenAPI spec |
-
-## 提交前
+## 验证
 
 ```bash
-bun run fix && bun run typecheck && bun run test
+bun run fix && bun run typecheck && bun run test && bun run build
 ```
-
-没有 CI、没有 pre-commit hook——上面三条由你自觉跑。