# Table: `schema_meta`

Stores schema/runtime metadata as key-value rows.

## Columns

| Column | Type | Null | Default | Notes |
|--------|------|------|---------|-------|
| `key` | `TEXT` | no | none | Metadata key. |
| `value` | `TEXT` | no | none | Metadata value. |
| `updated_at` | `TEXT` | no | none | ISO UTC timestamp written by the application. |

## Keys And Indexes

- Primary key: `key`
- SQLite creates the internal primary-key index.

## Known Keys

| Key | Meaning |
|-----|---------|
| `schema_version` | Current relational schema version. Current value: `2`. |
| `registry_updated_at` | Last registry update timestamp used for API/export metadata. |

## Relationships

None.

## Definition

```sql
CREATE TABLE IF NOT EXISTS schema_meta (
    key TEXT PRIMARY KEY,
    value TEXT NOT NULL,
    updated_at TEXT NOT NULL
);
```