Replace aliases.json with config.json storing instances with
default_database. Instance resolution: -i flag → config default →
DATASETTE_URL. Database resolution: -d flag → instance default_database →
DATASETTE_DATABASE. Token resolution: --token → auth.json by alias →
auth.json by URL → DATASETTE_TOKEN.
Add click-default-group dependency for bare SQL shortcut support.
Add DCLIENT_CONFIG_DIR env var to override config directory.
Rewrite query, insert, get, and actor commands for v2 API where
instance is always -i flag. Add upsert command sharing insert
implementation. Add databases, tables, schema, plugins commands.
Add default_query hidden command for bare SQL shortcut.
Add alias default, alias default-db subcommands.
Add auth status subcommand.
refs #29
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
Allow configuring a base Datasette instance URL and API token via
environment variables, so users can run commands like
`dclient query data "select ..."` without specifying a full URL each time.
DATASETTE_URL is combined with the argument as a path segment.
DATASETTE_TOKEN is used as a lowest-priority fallback for auth.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
