feat(config): write to state.toml + keychain and deprecate profiles (2/2)

[LorrisSaintGenez]

What

• Flip every credential write from config.toml to the state.toml (non-secrets) + OS keychain (secrets) store. config.toml is now only read as a legacy fallback and is never written.
• auth login, application create, and application select persist the application metadata + api_key_uuid to state.toml, the API key to the keychain, and set the current application.
• application list marks configured applications from state.toml; auth crawler stores crawler_user_id in state.toml and the crawler key in the keychain.
• Deprecate the profile command group (add/list/remove/setdefault) in favor of auth login, application list, and application select. Stored profiles still resolve as aliases via the deprecated --profile flag until v2.0.

Test

Starting from a clean state (no state.toml):

• algolia auth login: signs in, mints/reuses an API key, writes state.toml (application id + alias + api_key_uuid) and the OS keychain (API key), and sets the app as current. config.toml is left untouched.
• algolia application list: lists your applications with the configured one marked (profile: <alias>), read from state.toml.
• algolia application select: switches the current application in state.toml, minting a key into the keychain only if none exists yet.
• algolia indices list: resolves credentials from state.toml + keychain and succeeds with no flags/env.
• algolia auth crawler: stores crawler_user_id in state.toml and the crawler API key in the keychain for the current application.
• algolia profile list (and the other profile … subcommands): still work via the stored aliases but print the deprecation notice pointing to the replacement commands.

Throughout, confirm config.toml is never written (it stays untouched / absent).

GROUT-305

[codacy-production]

Up to standards ✅

🟢 Issues 0 issues

Results:
0 new issues

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🟢 Metrics 8 complexity · 2 duplication

Metric	Results
Complexity	8
Duplication	2

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