Moved to PSQL.

CLAUDE.md

@@ -13,30 +13,36 @@ Pet sitting web service for managing clients and bookings. The owner uses the si
 ## Tech Stack
 
 - **Language:** Rust (edition 2024)
-- **Web framework:** [Cot](https://github.com/cot-rs/cot) — Rust web framework (Django-like), local path `../cot/cot`
-- **Database:** SQLite (via Cot ORM), file `db.sqlite3`
+- **Web framework:** [Cot](https://github.com/cot-rs/cot) - Rust web framework (Django-like), local path `../cot/cot`
+- **Database:** PostgreSQL (via Cot ORM)
 - **Notifications:** Telegram Bot API
 
 ## Build & Run
 
 ```sh
-cargo build          # build
-cargo run            # run dev server at http://127.0.0.1:8000
-cargo test           # run all tests
-cargo test <name>    # run a single test by name
-cargo clippy         # lint
-cargo fmt --check    # check formatting
-cot migration make   # generate migrations from model changes (requires cot-cli)
+cargo build              # build
+cargo run                # run dev server at http://127.0.0.1:8000
+cargo test               # run all tests
+cargo test <name>        # run a single test by name
+cargo clippy             # lint
+cargo fmt --check        # check formatting
+cot migration make       # generate migrations from model changes (requires cot-cli)
+```
+
+Set `WEB_PETTING_DATABASE_URL` (or `DATABASE_URL`) before running the app or migrations. Example:
+
+```sh
+WEB_PETTING_DATABASE_URL=postgresql://postgres:postgres@localhost:5432/web_petting cargo run
 ```
 
 ## Architecture
 
-Monolithic Cot web app with a single SQLite database.
+Monolithic Cot web app with a single PostgreSQL database.
 
-- `src/main.rs` — project/app setup, router, config
-- `src/models.rs` — all database models (Lead, Client, Visit, Media, User, Setting)
-- `src/migrations.rs` — migration registry (auto-generated by `cot migration make`)
-- `src/migrations/` — migration files (auto-generated)
+- `src/main.rs` - project/app setup, router, config
+- `src/models.rs` - all database models (Lead, Client, Visit, Media, User, Setting)
+- `src/migrations.rs` - migration registry
+- `src/migrations/` - migration files
 
 ## Database Design Principles
 
@@ -46,9 +52,9 @@ Monolithic Cot web app with a single SQLite database.
 
 ## Data Model
 
-- **Lead** (`new`/`in_progress`/`converted`/`rejected`) — public form submission; links to Client when converted
-- **Client** (`active`/`archived`) — confirmed client with `media_token` for public media page
-- **Visit** (`scheduled`/`completed`/`cancelled`) — pet sitting session, belongs to Client
-- **Media** (`active`/`archived`) — photo/video, belongs to Client, optionally to Visit
-- **User** (`active`/`archived`) — admin accounts (supports multiple admins)
-- **Setting** — global key-value config (telegram_bot_token, telegram_chat_id, etc.)
+- **Lead** (`new`/`in_progress`/`converted`/`rejected`) - public form submission; links to Client when converted
+- **Client** (`active`/`archived`) - confirmed client with `media_token` for public media page
+- **Visit** (`scheduled`/`completed`/`cancelled`/`deleted`) - pet sitting session, belongs to Client and User
+- **Media** (`active`/`archived`) - photo/video, belongs to Client, optionally to Visit
+- **User** (`active`/`archived`) - admin accounts (supports multiple admins)
+- **Setting** - global key-value config (telegram_bot_token, telegram_chat_id, etc.)