From 56e5c76cfb755c8df5f8965e461c2dbb0cdc385a Mon Sep 17 00:00:00 2001 From: Claude Date: Sun, 18 Oct 2026 13:02:33 +0000 Subject: [PATCH 1/3] docs: rewrite CLAUDE.md against the current code Audit found the previous file had drifted from the codebase and was carrying GitHub-issue history that cost context every session without changing how code gets written here. This rewrite is shorter in words and checked claim by claim against the code, Makefile and CI workflow. Corrections: - Lifecycle hook list was missing register_setup_steps, register_body_limits, register_design_packs and register_audit_links. - Diagnostics (SM0xx) run only in development; production boot is failed by strict discovery, the auth-provider check and SM010, not by the suite. - Migration history has several heads (make migrate runs `upgrade heads`); the Alembic env is host/migrations/env.py. - Inertia render keys use ModuleMeta.name; the i18n namespace and app.state slot use the package name. The two were conflated. - Module settings are DbBackedSettings registered via register_module_settings, not env-driven dataclasses. - No env var is required (SQLite default); Redis uses one SM_REDIS_URL. - `make lint` and the CI job list were incomplete; the hardcoded-string, metadata and README checks are local-only. - gen-pages CSS imports are absolute paths, not a `#module/` alias. - File-size cap exemptions, untranslated-string exemption syntax and the dev-services path were wrong or incomplete. Added: - "Before you push" checklist (gen-pages, lint incl. ruff on .md fences, gen-i18n diff gate, Postgres round trip, CHANGELOG entry). - No-magic-strings constants rule enforced by check_hardcoded_strings.py. - "Adding a module or package" checklist (package-lock, release matrix, docs pages, branch_labels; framework packages wired by hand). - Background tasks, audit links, design packs integration rules; AwareDateTime; session.on_commit; full fixture list. - "Working in parallel": fan out independent slices to subagents with an explicit per-task model, and use the Codex CLI as a read-only second reviewer when it is installed and authenticated. - Pointer to the shipped skills/ directory to keep in sync. Claude-Session: https://claude.ai/code/session_01TJ3Gy55Ngyuj5o4UakoF2v --- CLAUDE.md | 521 +++++++++++++++++++++++++++++++++++++++++------------- 1 file changed, 395 insertions(+), 126 deletions(-) diff --git a/CLAUDE.md b/CLAUDE.md index 6be2dbd2c..2bbc1bc37 100644 --- a/CLAUDE.md +++ b/CLAUDE.md @@ -1,154 +1,423 @@ # CLAUDE.md -This file provides guidance to Claude Code (claude.ai/code) when working with code in this repository. +Guidance for Claude Code (claude.ai/code) working in this repository. Keep it to +what changes how code gets written here; history and rationale live in `docs/`. -## Stack +## What this is -Python 3.12 + FastAPI + SQLModel + Alembic on the backend; Inertia.js + React + Tailwind 4 + Vite on the frontend. `uv` workspaces for Python, `npm` workspaces for JS. Package managers: `uv sync --all-packages` and `npm install`. +A **modular-monolith framework**: feature modules are Python packages loaded into +one FastAPI app, each with its own SQLModel tables, REST + Inertia endpoints and +React pages. There is no host–module API boundary. -## Local database & services (shared dev-services stack) +Stack: Python 3.12 + FastAPI + SQLModel + Alembic; Inertia.js v3 + React + +Tailwind 4 + Vite. `uv` workspaces for Python, `npm` workspaces for JS. +Published as ~20 PyPI packages (`simple_module_*`) and 3 npm packages +(`@simple-module-py/*`) in lockstep (`docs/release.md`). -**Do NOT start your own Postgres/Redis container.** All repos in `~/Repos` share -one stack defined in `~/Repos/dev-services` (one PostGIS + Redis + MinIO + Adminer -on the `devnet` Docker network). `make docker-up` here brings that shared stack up -(it no longer starts a local postgres/redis); `make docker-down` only stops this -repo's own containers (worker/beat), never the shared stack. - -This repo's slice: - -- **Postgres**: `localhost:5432`, `postgres`/`postgres`, database - **`simple_module_python`** (the default `SM_DATABASE_URL` is SQLite; uncomment - the Postgres line in `.env.example` to use the shared DB). -- **Redis**: `localhost:6379`, logical DBs **4** (broker) / **5** (result backend). - -If a port is taken by an old per-project container, stop that container rather -than remapping ports. To add a database, edit `dev-services/init/01-databases.sql`. +Layout: `framework/{core,db,hosting,inertia,testing,cli}` (the framework), +`modules/` (plugin modules), `host/` (the dev host app and all Alembic +migrations), `packages/{ui,i18n,tsconfig}` (shared JS), `skills/` (agent skills +shipped to users via `smpy skills add`), `.claude/skills/` (skills for this repo). ## Commands -All day-to-day tasks go through `make`: +Everything goes through `make`. Full list: `docs/reference/make-commands.md`. | Command | Purpose | |---|---| -| `make install` | Install Python + JS deps | -| `make dev` | Docker up + regen module pages + API (8000) and Vite (5050) in parallel | -| `make kill` | Free ports 8000/5050/5173 | -| `make test` | Run `test-py` then `test-js` (e2e excluded by default) | -| `make test-py` / `make test-js` | Run a single suite | -| `make test-py-pg` | Python suite on Postgres (`SM_TEST_PG_URL`, default db `sm_test`, schema is dropped per test) | -| `make test-e2e` | Playwright smoke tests (requires `make dev` running + `uv run playwright install chromium`) | -| `make lint` | Ruff format-check + Ruff + `ty` + Biome + per-workspace `tsc` + 300-line file cap | -| `make doctor` | Module diagnostics (orphan pages, coupling violations, migration drift, locale checks) — same checks run at prod boot | -| `make migrate` / `make migration msg="..."` | Apply / autogenerate Alembic migrations (autogenerated on SQLite? review per `docs/module-authoring.md` § Migrations) | -| `make migrations-roundtrip-pg` | Postgres portability gate: `upgrade heads` → `downgrade base` → `upgrade heads` → `alembic check` on `SM_MIGRATIONS_PG_URL` (a disposable DB; CI runs it) | -| `make new-module name=` | Scaffold a new module package end-to-end | -| `make gen-pages` | Regenerate `host/client_app/modules.{manifest.json,generated.ts,generated.css}` from installed modules | - -Single test: `uv run pytest path/to/test_file.py::test_name` (root `pyproject.toml` sets `asyncio_mode=auto` and `-m 'not e2e and not perf'`). A single JS test: `npx vitest run `. - -Entry point: `host/main.py` (`uv run --project host uvicorn host.main:app --reload`). Alembic runs from the repo root (`host/alembic.ini`) so it shares the `.env` / `SM_DATABASE_URL` with the API. +| `make install` | `uv sync --all-packages` + `npm install` | +| `make dev` | Shared Docker stack up + `gen-pages` + API (:8000) and Vite (:5050) | +| `make test` / `make test-py` / `make test-js` | Pytest (SQLite, e2e/perf excluded) then Vitest | +| `make test-py-pg` | Pytest on Postgres (`SM_TEST_PG_URL`, default db `sm_test`); not run in CI | +| `make test-e2e` | Playwright smoke tests against a running `make dev` | +| `make lint` | Ruff format + Ruff + `ty` + Biome + per-workspace `tsc` + file-size cap + hardcoded-string check + untranslated-string check + package metadata/README checks | +| `make doctor` | Module diagnostics (`SM0xx`), same suite as a dev boot | +| `make migrate` / `make migration msg="..."` / `make downgrade` / `make migration-history` | Alembic `upgrade heads` / autogenerate / `-1` / history | +| `make migrations-roundtrip-pg` | Postgres portability gate (upgrade → downgrade base → upgrade → `alembic check`); CI runs it | +| `make gen-pages` | Regenerate `host/client_app/modules.{manifest.json,generated.ts,generated.css}` (gitignored; needed before `tsc`/Vite) | +| `make gen-i18n` | Regenerate `packages/i18n/src/{keys.generated,generated-resources}.ts` (committed; CI diffs them) | +| `make new-module name=` | Scaffold a module package (see § Adding a module for what it does *not* do) | +| `make openapi` | Export `openapi.json` for typed clients | +| `make worker` / `make beat` | Celery worker / beat for `background_tasks` | + +Single tests: `uv run pytest path/to/test_file.py::test_name` from the repo root +(`asyncio_mode=auto`, `-m 'not e2e and not perf'` are set in `pyproject.toml`); +`npx vitest run ` for JS. Entry point: `host/main.py` +(`uv run --project host uvicorn host.main:app --reload`). Alembic runs from the +repo root via `host/alembic.ini`, so it shares `.env`/`SM_DATABASE_URL` with the +API. + +### Local environment + +- **No env var is required.** The default DB is SQLite (`./app.db`), so tests and + a plain local run need no services. `make dev` starts the author's *shared* + dev-services stack from `../dev-services/compose.yml` (Postgres on + `localhost:5432`, db `simple_module_python`; Redis on `localhost:6379`, one + `SM_REDIS_URL=redis://localhost:6379/4` seeds broker and backend). Never start + your own Postgres/Redis containers; `make docker-down` only stops this repo's + worker/beat. +- **Cloud/CI sessions have no Docker.** Launch API + Vite directly per + `.claude/skills/running-the-stack/SKILL.md` (spare ports, SQLite file DB, + `smpy users create-admin`). Prefer `make kill`'s *intent* over its command: it + runs `pkill -f vite` and kills other projects' servers, so kill by port. +- If a `.env` exists, read it but move it aside before `make test-py`: `.env` + beats process env for `SM_VITE_DEV_URL` and a dashboard test asserts Vite on + `:5050`. Never export `SM_ENVIRONMENT=production` in a shell that runs pytest; + the test plugin refuses to import. +- The invalidation tests need `redis-server` on `PATH` or `SM_TEST_REDIS_URL`; + the fixture fails rather than skips (CI provides a service container). + +## Before you push + +Run what CI runs, in this order; a red push costs a review cycle. + +1. `make gen-pages` once per fresh checkout (generated frontend files are + gitignored; `tsc` and Vite fail without them). +2. `make lint`. Note `ruff format --check .` also formats Python fences inside + `.md` files, so run `uv run ruff format docs/` after editing docs. +3. `make test-py` and `make test-js`. +4. Touched any `locales/*.json`? `make gen-i18n` and commit the two generated + files; CI runs the generator and fails on a diff. `--allow-removals` is only + for a deleted module. +5. Added a module, a table or a migration? Also run `make doctor` and, for + Postgres-portability, `make migrations-roundtrip-pg` against a disposable DB + (`docs/module-authoring.md` § Reviewing a revision autogenerated on SQLite: + boolean `server_default` as `sa.true()/sa.false()`, expression indexes by hand, + enum downgrades via `drop_enums_if_postgres`). +6. User-visible change? Add a `## [Unreleased]` entry to `CHANGELOG.md` (Keep a + Changelog; cite issue numbers and migration revision ids; mark behaviour + changes). Every feature/fix PR in recent history does this. + +CI (`.github/workflows/pr.yml`, aggregate job `pr-checks`): python-lint (includes +the i18n up-to-date diff), python-typecheck, python-tests (Redis service), +js-tests, js-lint (includes the untranslated check), js-typecheck, js-build +(module CSS build guards), migrations-roundtrip-pg, e2e-smoke, perf-guards, +file-size-check, package-build. **Local-only checks** (in `make lint`, not in +CI, reviewers still reject on them): hardcoded strings, `check_metadata.py`, +`check_readmes.py`. e2e-smoke and perf-guards enable a hardcoded +`SM_MODULES_ENABLED` JSON list; a new module is not exercised there until added. ## Architecture -This is a **modular-monolith framework**. There is no host–module API boundary: modules are Python packages loaded into one FastAPI app. +**Discovery.** Modules declare `[project.entry-points.simple_module]` pointing +at a `ModuleBase` subclass with `meta = ModuleMeta(...)`. +`simple_module_core.discovery.discover_modules()` loads them, topologically sorts +by `ModuleMeta.depends_on`, and the host calls each `register_*` hook in that +order (`docs/framework/discovery.md`). + +**Two names per module.** `ModuleMeta.name` (scaffold default: PascalCase, +`FeatureFlags`) keys Inertia render paths, `depends_on` and `SM_MODULES_ENABLED`. +The Python package name (`feature_flags`) keys the i18n namespace, +`app.state.` and table prefixes. Don't swap them: `keys.` breaks if +the namespace is the meta name. -**Discovery.** Modules declare `[project.entry-points.simple_module]` in their `pyproject.toml` pointing at a `ModuleBase` subclass. `simple_module_core.discovery.discover_modules()` loads them, topologically sorts by `ModuleMeta.depends_on`, and the host invokes `register_*` hooks in that order. In production (`SM_ENVIRONMENT != development`) discovery is **strict** — any entry-point failure or missing/invalid `meta` raises at boot. +**Module layout** (`make new-module` scaffolds this plus `pyproject.toml`, +`README.md`, `LICENSE`, `package.json`, `tsconfig.json`, `tests/`): -**Module layout** (scaffolded by `make new-module`): ``` modules/// -├── module.py # ModuleBase subclass with meta = ModuleMeta(...) -├── models.py # SQLModel tables -├── contracts/ # SQLModel DTOs (public surface) — add a Protocol only for real extension points -├── service.py # business logic -├── deps.py # FastAPI dependencies -├── endpoints/api.py # REST (JSON) -├── endpoints/views.py # Inertia view endpoints -├── pages/*.tsx # auto-discovered by Vite via modules.generated.ts -├── theme.css # optional — @theme tokens; imported UNLAYERED -├── styles.css # optional — component rules; imported into layer(components) +├── module.py # ModuleBase subclass, meta = ModuleMeta(...) +├── constants.py # PERM_*, ROLE_*, _PAGE_*, _MODULE_* — see § Conventions +├── models.py # SQLModel tables (table=True) +├── contracts/ # SQLModel DTOs — the public surface; add a Protocol only for real extension points +├── settings.py # DbBackedSettings subclass +├── services.py # app.state. container built in register_settings +├── service.py # business logic +├── deps.py # FastAPI dependencies +├── endpoints/api.py # REST (JSON) under /api/ +├── endpoints/views.py # Inertia view endpoints under view_prefix +├── pages/*.tsx # Inertia pages; lowercase-leading subdirs (components/) are helpers, not pages +├── tasks.py # optional Celery tasks (see § Conventions) +├── theme.css # optional @theme tokens, imported UNLAYERED +├── styles.css # optional component rules, imported into layer(components) └── locales/.json ``` -Both CSS files are optional and auto-detected; `gen-pages` emits an -`@import "#module//..."` for each, so nothing is added to the host's -`styles.css` by hand. The split is load-bearing: a `@theme` block inside a -cascade layer is inert, while unlayered CSS beats every Tailwind utility — -hence `SM022`/`SM023`. See `docs/module-authoring.md` § Styling. - -**Lifecycle hooks** (in `framework/core/simple_module_core/module.py`) — all no-op by default; subclasses override as needed: -`register_settings` → `register_menu_items` / `register_permissions` / `register_feature_flags` / `register_event_handlers` / `register_invalidations` / `register_health_checks` / `register_public_routes` / `register_csp_sources` / `register_setup_steps` → `register_exception_handlers` → `register_middleware` → `register_routes(api_router, view_router)` / `register_admin_routes(admin_router)` → async `on_startup` / `on_shutdown` (reverse order). `register_admin_routes` is only for modules that serve **both** public and admin pages: a module gets exactly one router per `view_prefix`, which `users` cannot express (sign-in at `/users/login`, management at `/admin/users`). Setting `ModuleMeta.admin_view_prefix` mounts a second view router there. A module whose views are *all* administrative just points `view_prefix` at `/admin/` and keeps using `register_routes`. The prefix is a URL convention, not a permission — guard these routes exactly as you would any other. `register_csp_sources(registry)` lets a module whitelist external asset origins (`registry.add("style-src", "https://rsms.me")`) — fetch directives only, validated at boot; an origin read from DB-backed settings uses `registry.add_provider(fn)`, evaluated per response. `register_public_routes(registry)` lets a module exempt anonymous/read-only routes (STAC/OGC, webhooks) from `AuthMiddleware`; rules are method-aware (`registry.add_regex(r"…/tilejson$", methods={"GET"})`), so a GET read route can be public while sibling POST/PATCH mutations under the same prefix stay gated. See [docs/framework/public-routes.md](docs/framework/public-routes.md). `register_setup_steps(registry)` lets a module declare what a usable install still needs; while any required step is incomplete `SetupMiddleware` serves the first-run wizard at `/setup` instead of the app. The wizard ships with `simple_module_hosting` (`setup_wizard/` — routes mounted by `create_app`, page `Setup/Wizard` registered by `gen-pages`), so hosts carry no setup code; a step completes from the browser through its `SetupAction`, which runs only while *that* step is pending. A module that registers nothing never gates — that is how `keycloak` opts out, since its local users table is legitimately empty forever and a host-level superuser count would lock those installs out permanently. `register_invalidations(bus, app)` subscribes a module's **per-process caches** to `InvalidationBus`, so another worker's write drops this worker's entry instead of leaving it stale for its whole TTL; handlers may only *forget*, since there is no delivery guarantee. Publishing takes no hook — `await request.app.state.sm.invalidation.publish(channel, key=...)` from a `db.on_commit` callback. Cross-process delivery needs a transport, which `background_tasks` installs on its Redis connection (`SM_BG_TASKS_BROADCAST_INVALIDATIONS`); with none the bus is in-process and every cache still needs its TTL as a floor. See [docs/framework/invalidation.md](docs/framework/invalidation.md). - -`MenuRegistry.add_provider(fn)` (from `register_menu_items`) contributes per-request menu items evaluated in `InertiaLayoutDataMiddleware` after auth/tenant resolution, and `PermissionRegistry.add_source(name, provider)` (from `register_permissions`) contributes runtime-defined permissions from a sync in-memory cache, refreshed with `invalidate_source(name)`; see [docs/framework/permissions.md](docs/framework/permissions.md). - -**Middleware pipeline** (Starlette `add_middleware` is LIFO — last added runs first). Execution order on a request: -`(ProxyHeaders, if SM_TRUSTED_PROXY) → CorrelationId → RequestLogging → BodyLimit → GZip → SecurityHeaders → Session → → Tenant (opt-in) → Locale → InertiaLayoutData → InertiaCache → RateLimit → Setup → Maintenance → CommitBeforeResponse → app`. `BodyLimit` refuses an oversized request body (`HostSettings.max_request_body_bytes`, default 10 MiB; per-path overrides via `register_body_limits`) on `Content-Length` or by counting streamed chunks, before GZip and every module see it; `RateLimit` sits *after* auth and Locale/layout data so it can tell anonymous from signed-in and render a translated 429, and by default throttles only anonymous requests to routes the public-route registry exempts (`rate_limit_public`, per client IP, Redis via `SM_REDIS_URL` else per-worker). See [docs/framework/request-guards.md](docs/framework/request-guards.md). `InertiaCache` answers for `InertiaLayoutData` merging per-user `auth`/`menus` into every payload: a response to an `X-Inertia` request is forced to `private, no-store` with its ETag dropped, and both representations of a URL gain `Vary: X-Inertia` — so no cache can store the JSON payload or hand it back for a page request. A module wanting its public page content cached should set `Cache-Control` and an ETag on the *document*; that path is left alone. `GZip` compresses any response over 500 bytes, including the `/static` mount — the built CSS is ~139 KB raw versus ~21 KB gzipped, and uncompressed assets dominated cold page load. `ProxyHeaders` (uvicorn's `ProxyHeadersMiddleware`) is installed only when `SM_TRUSTED_PROXY` is set, sitting outermost so the `X-Forwarded-*`-corrected scheme/client IP reach everything downstream (request logs). Inertia does not depend on it: the page url is rewritten to the root-relative form the protocol specifies (`_inertia_url.py`), so no scheme travels in the payload to disagree with the document's — the cross-scheme `pushState` `SecurityError` of GH #223 cannot recur on an install that never set the variable. When two modules add middleware at the same dependency tier, the module that sorts **later** wraps outermost. Use `depends_on` to express relative order — don't rely on names. `Maintenance` serves a 503 page to everyone but admins while `maintenance_mode` is set on `HostSettings`; it sits inside `InertiaCache` because its 503 is an Inertia payload produced by short-circuiting, and outside the cache guard that payload would ship storable. `Setup` runs just before it, for the same cache reason and because an install that was never set up has nothing meaningful to put into maintenance. - -**Database**: per-module `Base` via `create_module_base("")`. On SQLite `init_db` enables WAL, an explicit `busy_timeout`, and **`foreign_keys=ON`** — so both sides of an FK must use the same column type (`sa.Uuid` and fastapi-users' `GUID` are identical on Postgres but not on SQLite), and parents must be flushed before children. Every module owns its own `MetaData` (so Alembic autogenerate can attribute tables to a module), but all tables live in the host's single schema. `__tablename__` must be prefixed with the module name to avoid collisions (`orders_order`). Postgres and SQLite share the same layout. - -Standard mixins in `simple_module_db.mixins`: `AuditMixin`, `SoftDeleteMixin` (bypass the read filter with `stmt.execution_options(include_deleted=True)`; purge by deleting an already-trashed row, or with `hard_delete(session, obj)`), `MultiTenantMixin`, `VersionedMixin`. The soft-delete/tenant filters cover every statement shape, not only selects that name the entity — joins, ORM subqueries, `select(func.count()).select_from(Model)`, and Core statements over `Model.__table__` (GH #332). **Tenancy fails closed**: with `multi_tenant` on, a query or insert on a `MultiTenantMixin` model with no `current_tenant_id` raises `TenantIsolationError` instead of reading every tenant; cross-tenant code says so with `all_tenants()` / `execution_options(all_tenants=True)`, and jobs/CLI act for one tenant with `tenant_context(id)`. With `multi_tenant` off and no tenant bound, inserts are stamped `DEFAULT_TENANT_ID` (`"default"`, from `simple_module_db`) and reads stay unfiltered; adoption migrations backfill with the same constant. Tenant roles reach the principal as `tenant:` — map them with `tenant_role(TenantRole.MEMBER)` from `simple_module_core.tenancy`, never by importing `tenants`; tests use the `tenant_client(role)` fixture. Unique keys on such tables must include `tenant_id` (`SM024`). The `tenants` module owns organisations, memberships and `app.state.tenant_resolver`; tenant-level routes act on the *active* tenant, never a tenant id from the URL. See [docs/framework/multi-tenancy.md](docs/framework/multi-tenancy.md). The per-request session (`get_db`) auto-commits **only if** there are pending writes (via `after_flush` listener); otherwise rollback. Service code should **not** call `session.commit()` — flush if you need DB-assigned values. DML executed through the session (`session.execute(update(Model)...)`) counts as a write; a raw `text("UPDATE ...")` does not, and needs `mark_written(session)`. The commit fires in `CommitBeforeResponseMiddleware`, at the ASGI `http.response.start` message, so a client that creates a row and immediately reads it back in a second request sees it — FastAPI runs a `yield` dependency's exit code *after* the response is delivered, which used to make that a deterministic 404 (GH #257). `get_db` keeps the same commit in its own exit code as a fallback for when the middleware isn't in the stack; whichever runs first wins. - -**Migrations** live in `host/migrations/versions/` — not in module packages. `host/alembic/env.py` calls `build_module_metadata()` + `make_include_object()` so autogenerate covers every installed module and ignores host-owned tables. First migration of each module should set `branch_labels = ("",)`. The label is only a **named target** (`alembic upgrade/downgrade @`, and the `module` column of the Doctor migration list): because autogenerate chains each first revision off the current head, the history is one linear chain, and `downgrade @base` walks the **entire chain beneath that revision, other modules included** — it is not a per-module rollback. To remove one module's schema, downgrade to the `down_revision` of its first revision, which is safe only while no other module's revisions sit above it; otherwise write a dedicated migration that drops that module's tables. See [docs/database/migrations.md](docs/database/migrations.md) § Removing one module's schema. - -**Postgres extensions & types.** A module needing an extension overrides `ModuleBase.db_extensions()` (`["ltree"]`); `host/migrations/env.py` calls `ensure_db_extensions` before the revisions run (`CREATE EXTENSION IF NOT EXISTS`; on SQLite it raises `UnsupportedDatabaseError`, SM029 warns early). `simple_module_db.types.LTree` / `TSVector` are `TEXT` on SQLite. Tests that need Postgres carry `@pytest.mark.postgres` and skip unless `SM_TEST_DATABASE_URL` is Postgres. See [docs/database/extensions.md](docs/database/extensions.md). - -**Admin section**. Administrative screens live under `/admin/*`, register into `MenuSection.ADMIN_SIDEBAR`, and render in `AdminLayout` — all three together, not one of the three. `SidebarLayout` renders whichever menu its `menuKey` names, so a page left on `AuthenticatedLayout` after its menu item moved shows a sidebar that no longer contains it. `group=` sub-clusters *within* the admin sidebar (`Access`, `Appearance`, `System`); it is no longer used to carve an admin area out of the main sidebar. `/admin` itself is a host route (`host/routes.py`) that renders from the `adminSidebar` shared prop, so an installed module contributes a card without touching it. Old URLs 301 from `host/routes_legacy.py`. Only view URLs moved — `/api/*` is a separate contract and stays put. - -**Inertia**. `inertia.render("/", ...)` maps to `modules///pages/.tsx`, where `` is the PascalCase of the module directory (`blog_posts` → `BlogPosts`). Host-level pages under `host/client_app/pages/` use a bare ``. `InertiaLayoutDataMiddleware` populates shared props (`auth`, `menus`, `i18n`); use `InertiaDep` from `simple_module_hosting.inertia_deps`. Mismatched keys fire `SM003` (orphan page) / `SM004` (phantom render). The adapter is the in-repo package `simple_module_inertia` (Inertia v3 protocol); import `InertiaResponse` and the prop factories (`optional`, `always`, `defer`, `merge`, `once`, `scroll`) from it. -**CSRF defence**. Baseline protection comes from `SameSite=Lax` on the session cookie (Starlette default): browsers don't attach the cookie to cross-site POST/PUT/DELETE, so a forged form-submit from another origin is unauthenticated. Raw `fetch()` calls in page code don't need a token header by default. Modules wanting defence in depth opt into `simple_module_hosting.csrf` — `RequiresCsrf` as a router dependency plus `get_csrf_token(request)` exposed as a view prop; callers echo it as `X-CSRF-Token` on unsafe methods. - -## Conventions to follow - -- **SQLModel is the project-wide standard for every model** — both DB tables (`table=True`) and DTOs (plain `SQLModel` subclasses). Do not use Pydantic `BaseModel` or SQLAlchemy `DeclarativeBase` + `Mapped[...]` in module code. -- **300-line cap** on `.py`/`.ts`/`.tsx` files, enforced by `scripts/check_file_size.py` in CI (exempts vendored shadcn components under `packages/ui/src/components/ui/**`). If you approach the cap, split by responsibility — don't rewrite to squeeze under. -- **Per-module settings**: env-var prefix `SM__*`, stored on `app.state.` inside `register_settings(app)` as a module-owned dataclass. `SM012` warns if `register_settings` is overridden without adding `app.state.`. -- **Configuration lives in the DB, not `.env`.** Only `SM_DATABASE_URL` is required; `SM_REDIS_URL` and the optional `SM_USERS_BOOTSTRAP_*` are the only others an operator normally sets. `SM_ENVIRONMENT`/`SM_DEBUG`/`SM_VITE_DEV_URL` describe the process rather than the configuration. Precedence is always **env → DB → default**; env must keep winning or existing deployments change behaviour silently on upgrade. -- **Settings are read twice per boot.** `create_app` builds the module list, the i18n registry and the middleware stack in Phases 1 and 8 — all before the lifespan opens the DB — so `_preapp_config.merge_host_settings` does one short-lived read *before* Phase 1. The lifespan then hydrates again for runtime edits. A `HostSettings` field consumed at build time is inert without that first read: this is why `i18n_*` and `multi_tenant` edits in the admin UI used to do nothing. **`host/main.py` must call `merge_host_settings()`, not `Settings()`** — it passes settings into `create_app`, so `create_app`'s own fallback never fires there. -- **`SM_SECRET_KEY` is optional**: unset generates a key and stores it (atomically — concurrent workers must converge, or they invalidate each other's sessions). An explicit env value wins and is never copied into the DB. -- **Framework vs plugin coupling**: `SM009` is an error if `framework/*` directly imports from a plugin module. Framework code must not reach into `modules/`. -- **Zod schemas with translated messages** must be constructed inside a hook (`useT()`) — never at module scope, or they freeze against the first render's locale. -- **Locales**: ship `/locales/.json` and declare in `ModuleBase.locale_dirs()` with the module's lowercase name as the namespace. `{"browse": {"title": "X"}}` flattens to `.browse.title`. Pluralize with CLDR suffixes (`_one`, `_other`, ...). -- **No user-visible string literals in `.tsx`** — enforced by `make ci-check-untranslated`, see § CI. Every rendered string — JSX text, `placeholder`, `aria-label`, ``, `toast.*()`, confirm text — goes through `t(keys..…)` from `@simple-module-py/i18n`. Exempt: shell commands, env-var names, and JSON examples shown as literal ``. In non-component modules (a `retry.ts` helper) import the non-hook `t` and call it *inside* the function, never at module scope, or it freezes against the boot locale. -- **Menu labels**: set `label_key`/`group_key` on `MenuItem` next to `label`/`group`; group headers use the shared `ui.nav_groups.*` keys. Menus are translated server-side in `MenuRegistry.get_for_user(translate=…)`, and an unresolved key falls back to the literal `label`. See [docs/framework-conventions.md](docs/framework-conventions.md) § Shared props. -- Regenerate `packages/i18n/src/{keys.generated,generated-resources}.ts` after touching any catalog — booting the host in development does it, and `t()` only accepts keys present there. -- **Ty (type checker) false positives** from SQLModel: `unresolved-attribute`, `unsupported-operator`, `unknown-argument`, `no-matching-overload`, `invalid-argument-type` are all globally ignored in `pyproject.toml` because SQLModel declares fields with plain Python types while runtime instruments them as SQLAlchemy attributes. Do not re-enable these rules — real bugs surface in tests. - -## Diagnostic codes - -Meaningful codes when reading `make doctor` output: `SM001` missing meta (error), `SM003` orphan page / `SM004` phantom render (warn), `SM007` module overrides no hooks (info), `SM008` duplicate name (error), `SM009` framework→plugin import (error), `SM010` DB revision behind head (error), `SM011` module table not in migration history (warn), `SM012` `register_settings` overridden but nothing on `app.state.` (warn, fires at dev boot only), `SM013`–`SM016` locale issues, `SM017` module ships `.tsx` pages but is missing `package.json`/`tsconfig.json` (warn), `SM018` Inertia `router.{post,patch,put,delete}()` in a page targets a JSON `/api/*` endpoint (warn — Inertia rejects non-Inertia responses), `SM019` module registers view routes (non-empty `view_prefix` + overrides `register_routes`) but overrides neither `register_menu_items` nor `register_permissions` (warn — pages exist with no sidebar entry and no role-editor visibility; admins can't reach them through the UI). Modules whose views are sub-pages of another module typically register permissions to stay discoverable in the role editor without needing their own sidebar entry. `SM020` multiple auth provider modules installed (error), `SM021` no auth provider module installed (warn), `SM022` `@theme`/`@custom-variant`/`@utility` in a module's `styles.css`, where `layer(components)` makes them inert (warn), `SM023` an unlayered rule in a module's `theme.css`, which outranks every Tailwind utility (warn). `SM024` a unique key on a `MultiTenantMixin` table that omits `tenant_id` (warn). `SM025` `multi_tenant` is on but no module registered `app.state.tenant_resolver` (warn — checked at boot after module registration, in every environment, not by the `make doctor` CLI). `SM026` the database is SQLite and a model declares an expression index it cannot verify (info — autogenerate and `alembic check` skip those on SQLite; add them by hand and run `make migrations-roundtrip-pg`). `SM027` a host locale override (`host/locales/overrides/.json`) names a key no catalog defines (warn — skipped; reported by `make doctor` and at dev boot). `SM028` a module's `tasks.py` imports a heavy package (`torch`, `tensorflow`, `ultralytics`, `osgeo`, `rasterio`, `cv2`, `sklearn`) at module level (warn — import it inside the task). `SM029` a module declares `db_extensions()` and the database is SQLite (info — `ensure_db_extensions` refuses to run migrations there). In production, errors fail boot. +`gen-pages` writes `modules.generated.css` with an `@import` per CSS file that +exists. A `@theme` inside a cascade layer is inert and an unlayered rule beats +every Tailwind utility, so keep tokens in `theme.css` and rules in `styles.css` +(`SM022`/`SM023`). See `docs/module-authoring.md` § Frontend assets. + +**Lifecycle hooks** on `ModuleBase` (all no-op by default; order and examples in +`docs/framework/lifecycle.md`): `register_settings`, `register_menu_items`, +`register_permissions`, `register_feature_flags`, `register_event_handlers`, +`register_invalidations`, `register_health_checks`, `register_setup_steps`, +`register_public_routes`, `register_body_limits`, `register_csp_sources`, +`register_design_packs`, +`register_audit_links`, `register_exception_handlers`, `register_middleware`, +`register_routes(api_router, view_router)`, `register_admin_routes(admin_router)` +(only with `ModuleMeta.admin_view_prefix`), then async `on_startup` / +`on_shutdown` (reverse order). Non-hook overrides: `locale_dirs()`, +`db_extensions()`, `template_dirs()`, `static_mounts()`. + +- A module gets one view router per prefix. All-admin modules point + `view_prefix` at `/admin/`; modules with both public and admin pages set + `admin_view_prefix` and use `register_admin_routes`. A prefix is a URL + convention, not a permission: guard every route. +- `register_public_routes` exempts routes from `AuthMiddleware`, method-aware + (`registry.add_regex(r"…/tilejson$", methods={"GET"})`): + `docs/framework/public-routes.md`. +- `register_invalidations` subscribes per-process caches to `InvalidationBus`; + handlers may only *forget*. Publish from a `db.on_commit` callback with + `await request.app.state.sm.invalidation.publish(channel, key=...)`: + `docs/framework/invalidation.md`. +- `register_setup_steps` declares what a usable install still needs; while a + required step is pending the first-run wizard is served at `/setup`. A module + that registers nothing never gates. +- Events: subscribe in `register_event_handlers`, publish with + `await bus.publish(Event(...))`; dispatch keys on the exact class. Durable + delivery (outbox via `background_tasks`): `bus.subscribe_durable` + + `await bus.publish_durable(event, db)` inside the request transaction; a + durable handler must not commit `ctx.db`. `docs/framework/events.md`. +- Menus: `MenuRegistry.add_provider(fn)` for per-request items; permissions: + `PermissionRegistry.add_source(name, provider)` + `invalidate_source(name)`. + `docs/framework/permissions.md`. + +**Middleware** (Starlette `add_middleware` is LIFO). Execution order per +request: `(ProxyHeaders if SM_TRUSTED_PROXY) → CorrelationId → RequestLogging → +BodyLimit → GZip → SecurityHeaders → Session → → Tenant +(opt-in) → Locale → InertiaLayoutData → InertiaCache → RateLimit → Setup → +Maintenance → CommitBeforeResponse → app`. Rules that follow from it: + +- Modules at the same dependency tier: the one that sorts later wraps outermost. + Use `depends_on` to order, never names. +- Any `X-Inertia` response is forced `private, no-store`; to cache a public + page, set `Cache-Control`/ETag on the *document* response only. +- `RateLimit` runs after auth, so it can throttle anonymous traffic to public + routes only (`rate_limit_public`, Redis via `SM_REDIS_URL` else per-worker). +- Request bodies over `max_request_body_bytes` (10 MiB) are refused before any + module sees them; per-path overrides via `register_body_limits`. + +Per-middleware detail: `docs/framework/middleware.md`, +`docs/framework/request-guards.md`. + +**Admin section.** Admin screens live under `/admin/*`, register into +`MenuSection.ADMIN_SIDEBAR` and render in `AdminLayout`, all three together. +`SidebarLayout` renders the menu its `menuKey` names, so a page left on +`AuthenticatedLayout` after its item moved shows a sidebar without it. +`group=` sub-clusters inside a sidebar (`Access`, `Appearance`, `System`). +`/admin` itself is a host route (`host/routes.py`) rendered from the +`adminSidebar` shared prop; old URLs 301 from `host/routes_legacy.py`. +`/api/*` paths never move. + +**Inertia.** `inertia.render("/")` maps to +`modules///pages/.tsx`; host pages under +`host/client_app/pages/` use the bare name. Mismatches fire `SM003`/`SM004`. +Use `InertiaDep` from `simple_module_hosting.inertia_deps`; `InertiaResponse` +and prop factories (`optional`, `always`, `defer`, `merge`, `once`, `scroll`) +come from `simple_module_inertia`. Shared props `auth`, `menus`, `i18n` are set +by `InertiaLayoutDataMiddleware`; `auth.user` is null unless +`app.state.principal_serializer` is set, and `i18n.messages` is null on partial +reloads. Inertia `router.post/patch/put/delete` must target view routes, never +`/api/*` (`SM018`). `docs/frontend/`. + +**CSRF.** Baseline is `SameSite=Lax` on the Starlette session cookie; raw +`fetch()` in pages needs no token. Defence in depth: `RequiresCsrf` router +dependency + `get_csrf_token(request)` as a view prop, echoed as `X-CSRF-Token` +(`simple_module_hosting.csrf`). + +## Database + +- Per-module `Base` via `create_module_base("")`; every module owns its + `MetaData` but all tables share one schema. Prefix `__tablename__` with the + module name (`orders_order`); the scaffold does it, nothing enforces it. +- Mixins in `simple_module_db.mixins`: `AuditMixin`, `SoftDeleteMixin`, + `MultiTenantMixin`, `VersionedMixin`. Soft-delete and tenant filters cover + every statement shape (joins, subqueries, `select_from`, Core over + `Model.__table__`). Bypass with `execution_options(include_deleted=True)`; + purge with `hard_delete(session, obj)` from `simple_module_db` or by deleting + an already-trashed row. `docs/database/mixins.md`. +- Datetime columns use `sa_type=AwareDateTime()` (`simple_module_db.types`); + `DateTime(timezone=True)` reads back naive on SQLite. +- SQLite runs with WAL (file DBs), `busy_timeout` and **`foreign_keys=ON`**: + both sides of an FK need the same column type (`sa.Uuid` vs fastapi-users' + `GUID` differ on SQLite) and parents must be flushed before children. +- **Sessions.** The request session (`get_db`) commits in + `CommitBeforeResponseMiddleware` only if something was written (ORM flush or + `session.execute(update/insert/delete)`); otherwise it rolls back. Raw + `text("UPDATE …")` needs `mark_written(session)`. Service and request code + must not call `session.commit()`; flush when you need DB-assigned values. Use + `session.on_commit(cb)` for post-commit side effects. + `docs/database/sessions.md`. +- **Tenancy fails closed.** With `multi_tenant` on, a query or insert on a + `MultiTenantMixin` model with no current tenant raises `TenantIsolationError`. + Cross-tenant code says so with `all_tenants()` / + `execution_options(all_tenants=True)`; jobs act for one tenant with + `tenant_context(id)` (both in `simple_module_db.tenancy`). Off, rows are + stamped `DEFAULT_TENANT_ID` (`"default"`). Unique keys on tenant tables must + include `tenant_id` (`SM024`). Map tenant roles with + `tenant_role(TenantRole.MEMBER)` from `simple_module_core.tenancy`, never by + importing `tenants`. `docs/framework/multi-tenancy.md`. +- **Migrations** live in `host/migrations/versions/`, never in module packages. + `host/migrations/env.py` builds metadata from every installed module and runs + `ensure_db_extensions` first. The history has **several heads**, so always + `upgrade heads` (what `make migrate` does). A module's first revision sets + `branch_labels = ("",)`; that label is a named target, not a + per-module rollback: `downgrade @base` walks everything beneath it. + `docs/database/migrations.md`. +- Postgres extensions: override `ModuleBase.db_extensions()`; `LTree`/`TSVector` + types are `TEXT` on SQLite; tests needing Postgres carry + `@pytest.mark.postgres`. `docs/database/extensions.md`. + +## Conventions + +- **SQLModel everywhere**: tables are `SQLModel, table=True`; DTOs are plain + `SQLModel` subclasses. No Pydantic `BaseModel`, no SQLAlchemy + `DeclarativeBase`/`Mapped[...]` in module code. +- **No magic strings in non-test Python** (`scripts/check_hardcoded_strings.py`): + `RequiresPermission(...)`, `registry.map_role(...)`, `registry.add_group(...)` + items, `inertia.render(...)` keys and `depends_on=[...]` entries must be + constants from `constants.py` (`PERM_*`, role names, `_PAGE_*`, `_MODULE_*`). +- **300-line cap** on `.py`/`.ts`/`.tsx`, tests included, untracked files + included (`scripts/check_file_size.py`). Exempt: shadcn components under + `packages/ui/src/components/ui/**`, generated i18n files, + `host/migrations/versions/**`. Split by responsibility; don't squeeze. +- **Settings.** Host settings: precedence **env → DB → default**; env must keep + winning. `host/main.py` must call `merge_host_settings()`, not `Settings()`: + `create_app` builds modules, i18n and middleware before the lifespan opens the + DB, so a `HostSettings` field read at build time needs that pre-read. + `SM_SECRET_KEY` is optional (generated and stored atomically when unset). + Module settings are a `DbBackedSettings` subclass (constructor + DB only, no + env) registered in `register_settings` through + `settings.registration.register_module_settings(app, package, SettingsCls, + services_factory)`, which mounts the services object on `app.state.` + (`SM012`). `background_tasks` is the one module that also reads env + (`SM_BG_TASKS_*`). `docs/framework/settings.md`, `docs/reference/env-vars.md`. +- **Framework must not import plugins** (`SM009`): nothing under `framework/` + imports from `modules/`. Modules that must reach another module's helper do it + via `importlib` at call time or a registry callback. +- **Background tasks**: `tasks.py` with `@shared_task(name=".")`; + heavy imports (`torch`, `cv2`, …) inside the task body (`SM028`). Enqueue from + a transaction with `background_tasks.enqueue_after_commit(db, task, …)`, never + `.delay()`. Long tasks call `heartbeat()`. `docs/modules/background_tasks.md`. +- **Audit links / design packs**: `register_audit_links` takes + `AuditLink(entity_type=Model.__name__, …)` (class name, not table name, or it + silently never matches); `register_design_packs` slugs must match + `^[a-z0-9][a-z0-9-]*$` and the host must still import the CSS. +- **i18n.** Ship `/locales/.json`, declare in `locale_dirs()` with + the lowercase package name as namespace; `{"browse": {"title": "X"}}` becomes + `.browse.title`; plurals use CLDR suffixes (`_one`, `_other`). Menu items + set `label_key`/`group_key` beside `label`/`group`; group headers use + `ui.nav_groups.*`. **No user-visible string literals in `.tsx`**: JSX text, + `title`/`placeholder`/`aria-label`-style attributes, `toast.*()`/`confirm()` + arguments and ternary branches all go through `t(keys..…)` from + `@simple-module-py/i18n`. Exempt: text inside ``/`
`/``/
+  ``/``, a line marked `// i18n-exempt: ` (or the line
+  above), or `i18n-exempt-file: ` within the first 800 characters.
+  Strings passed through variables or config objects are not seen, so still
+  translate them. Zod schemas with translated messages, and the non-hook `t` in
+  helpers, are built inside the function, never at module scope.
+  `docs/framework/i18n.md`.
+- **JS tests** go in `modules//tests-js/*.test.ts(x)`, `packages/**` or
+  `host/client_app/**`; Vitest collects nothing else. Biome (single quotes,
+  2 spaces, width 100) lints `host/client_app`, `packages`, module `pages/` and
+  `components/` dirs; `tsc` runs per workspace, and a module with `.tsx` but no
+  `tsconfig.json` fails `make ci-js-typecheck`.
+- **`ty` false positives** from SQLModel (`unresolved-attribute`,
+  `unsupported-operator`, `unknown-argument`, `no-matching-overload`,
+  `invalid-argument-type`, `invalid-assignment`) are ignored in `pyproject.toml`.
+  Don't re-enable them; tests catch the real bugs.
+
+## Adding a module or package
+
+`make new-module name=` scaffolds the package, wires it into
+`host/pyproject.toml` and the root `testpaths`/`extra-paths`, and runs
+`uv sync`. It does **not**:
+
+1. Run `npm install`, so regenerate and commit `package-lock.json` (CI uses
+   `npm ci`).
+2. Add `simple_module_` to the `publish-pypi` matrix in
+   `.github/workflows/release.yml`; a test and `check_metadata.py` fail until
+   you do. `pyproject.toml` needs description, `readme`, `license = "MIT"`,
+   keyword `simple-module`, `urls.Repository`; `README.md` needs ≥ 500 bytes, an
+   H1 and Install/Usage sections.
+3. Write `docs/modules/.md`, add it to `docs/modules/index.md` and the
+   VitePress sidebar in `docs/.vitepress/config.ts`.
+4. Set `branch_labels` on the first migration, or add a `CHANGELOG.md` entry.
+
+A new `framework/*` package or `packages/*` npm package is wired by hand:
+root `pyproject.toml` `testpaths` + `[tool.ty.environment].extra-paths`, and
+the `publish-npm` matrix in `release.yml`. Unlisted test directories are
+silently never collected.
+
+## Diagnostics
+
+`make doctor` and a development boot run the `SM0xx` checks; the table with
+triggers and fixes is `docs/reference/diagnostic-codes.md`. **Production does
+not run them**: only strict discovery (a bad entry point or missing `meta`),
+the auth-provider check and the `SM010` migration check fail a production
+boot, so catch everything else with `make doctor` before shipping. Codes that
+change how you write code: `SM003`/`SM004` render-key mismatch, `SM009`
+framework→plugin import, `SM011` table missing from migrations, `SM012`
+settings not on `app.state`, `SM013`–`SM016` locale drift, `SM017` module
+pages without `package.json`/`tsconfig.json`, `SM018` Inertia call to `/api`,
+`SM019` views with no menu item or permission, `SM022`/`SM023` CSS in the wrong
+file, `SM024` unique key without `tenant_id`, `SM028` heavy import in
+`tasks.py`.
 
 ## Tests & fixtures
 
-The `simple_module_test` plugin provides app-level fixtures available to every test directory — auto-loaded via its `pytest11` entry point (defined in `framework/testing/simple_module_test/fixtures.py`), so the root `conftest.py` is intentionally thin:
-- `settings` — in-memory SQLite `Settings` with `multi_tenant=True`. Set `SM_TEST_DATABASE_URL=postgresql+asyncpg://…` to run the fixtures (and the tenancy DB tests) on Postgres instead; each test then starts from an empty `public` schema, reset once per test so `app` and `db_session` share it (`simple_module_test.database`). `make test-py-pg` runs the whole suite that way, with `-p no:anyio`: an `@pytest.mark.anyio` test would run on a different event loop from its async fixtures, and an asyncpg connection cannot cross loops.
-- `db_state`, `engine`, `db_session` — fresh in-memory `DatabaseState` per test; `db_session` also creates all module tables and stamps `alembic_version` at head so the boot-time migration check passes.
-- `app` — `create_app(settings)` with lifespan started/stopped.
-- `client` / `authenticated_client` — `httpx.AsyncClient`; `authenticated_client` seeds an admin via `users.bootstrap.create_admin` and carries a forged session cookie.
-
-E2E tests live in `tests/e2e/` behind the `e2e` pytest marker and run against a live server — see [docs/e2e-testing.md](docs/e2e-testing.md).
-
-## CI
-
-`.github/workflows/pr.yml` runs Python lint / typecheck / tests, JS lint / typecheck / tests, the 300-line file-size check, and the untranslated-string check as parallel jobs; `make lint` locally runs the same checks serially. Branch protection requires the aggregate `pr-checks` job.
-
-`make ci-check-untranslated` (`scripts/check_untranslated_strings.mjs`) parses every `.tsx` and fails on user-visible text rendered as a literal — JSX text, a `title`/`placeholder`/`aria-label`-style attribute, or a `toast.*()`/`confirm()` argument — including copy hidden in `cond ? 'A' : 'B'`. It parses with `@babel/parser` rather than grepping, because no regex over JSX can tell `
Save
` from `Promise`. It does **not** see strings passed through a variable or a config object (`const THEME = { mobileTitleLabel: 'Admin' }`), so those still need care.
-
-To exempt a genuinely technical literal: wrap it in ``/`
`, or mark the line `// i18n-exempt: `; `i18n-exempt-file: ` in a file's first lines skips the whole file.
-
-## Delegating to subagents
-
-Pick the subagent's model for the task, not the most capable one available. Don't run everything on `opus` or `fable`:
-
-- **`haiku`**: search, file discovery, and mechanical work like renames, checking docs against code, or collecting test output.
-- **`sonnet`**: routine implementation, functional and end-to-end testing, and regression runs.
-- **`opus`**: design, security and isolation reasoning, and adversarial review, where a wrong answer is expensive.
-
-Pass `model` explicitly on every `Agent` call, even when the default would be correct.
+`simple_module_test` (`framework/testing/`, auto-loaded via `pytest11`) provides
+app-level fixtures to every test directory; the root `conftest.py` is thin.
+`docs/testing/fixtures.md`.
+
+- `settings`: in-memory SQLite, `multi_tenant=True`, `auth_provider="users"`.
+  `SM_TEST_DATABASE_URL=postgresql+asyncpg://…` switches the whole suite to
+  Postgres with a per-test schema reset (`make test-py-pg` does this, with
+  `-p no:anyio` because an asyncpg connection cannot cross event loops).
+- `db_state`, `engine`, `db_session`: fresh `DatabaseState` per test;
+  `db_session` creates all module tables and stamps `alembic_version` at heads.
+- `app`: `create_app(settings)` with lifespan, seeds `admin@test`; `client` /
+  `authenticated_client` (`httpx.AsyncClient`, the latter with a forged admin
+  session); `tenant_client(role)` for tenant-scoped requests;
+  `setup_pending_app`, `fake_event_bus`, `build_test_app`, `redis_server`.
+- Module-specific fixtures live in each module's `tests/conftest.py`
+  (`background_tasks`, `file_storage` override some of the above).
+- E2E lives in `tests/e2e/` behind the `e2e` marker against a live server
+  (`docs/e2e-testing.md`); the suite needs `SM_RATE_LIMIT_PUBLIC=1000/minute`.
+
+## Working in parallel
+
+Split work into independent slices and run them at once instead of serially:
+verification of claims against code, surveys across many files, test runs per
+package, and adversarial review are all parallel-safe. Keep sequential what
+depends on an earlier result. One brief per slice: state the goal, what is
+already ruled out, the files to read, and the exact output wanted. Treat every
+report as claims to verify, not as instructions.
+
+**Pick the subagent model for the task; never run everything on the largest
+model.** Pass `model` explicitly on every `Agent` call:
+
+- `haiku`: search, file discovery, mechanical work (renames, checking docs
+  against code, collecting test output).
+- `sonnet`: routine implementation, functional and end-to-end testing,
+  regression runs, convention surveys.
+- `opus`: design, security and isolation reasoning, adversarial review, where a
+  wrong answer is expensive.
+
+**Codex as a second reviewer.** The Codex CLI (`@openai/codex`) is installed and
+authenticated on some machines, not on cloud sessions. Probe once per session
+with `codex login status`; if it is missing or prints `Not logged in`, use
+Claude subagents only, and do not install it or retry. When it is authenticated,
+hand it independent read-only slices in parallel with Claude subagents:
+`codex exec -s read-only ""` for a verification or review brief, and
+`codex exec review` for a diff review. Never give it `workspace-write` or
+`danger-full-access` here; edits stay with the session that owns the branch.
+
+## Repo skills
+
+`skills/*/SKILL.md` are the agent skills this repo **ships to users**
+(`smpy skills add`, `npx skills add antosubash/simple_module_python`); when a
+convention in this file changes, update the matching skill in the same PR.
+`.claude/skills/running-the-stack` is the verified recipe for launching the
+stack in a sandbox.
 
 ## Authoritative references
 
-When conventions are unclear, these docs are the source of truth (don't reverse-engineer the code):
-- [docs/framework-conventions.md](docs/framework-conventions.md) — invariants module authors rely on
-- [docs/module-authoring.md](docs/module-authoring.md) — authoring a module for distribution (entry points, migrations, API stability)
-- [docs/e2e-testing.md](docs/e2e-testing.md)
-- [docs/plans/](docs/plans/) — dated design docs; the most recent is the intended state
+When conventions are unclear, read these instead of reverse-engineering code:
+`docs/framework-conventions.md` (invariants), `docs/module-authoring.md`
+(entry points, migrations, API stability), `docs/framework/*.md` (lifecycle,
+middleware, settings, events, i18n, tenancy), `docs/database/*.md`,
+`docs/testing/*.md`, `docs/reference/*.md` (make commands, env vars,
+diagnostic codes), `docs/plans/` (dated design docs; the newest is the intended
+state).

From 862bd8210096c6eaa2251f341fefe7eb3dd5273b Mon Sep 17 00:00:00 2001
From: Claude 
Date: Sun, 18 Oct 2026 13:15:12 +0000
Subject: [PATCH 2/3] docs(CLAUDE.md): apply adversarial review corrections
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
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- `make migration` fails with "Multiple heads"; give the working
  `revision --autogenerate --head