m-lab / token-exchange / 21215743118

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feat(store): add create-integration CLI tool (#11)

* feat(store): add create-integration CLI tool

Add CreateIntegration and CreateAPIKey methods to ClientIntegrationManager
for creating new integrations and API keys in Datastore. Also adds:
- Exported constants for API key format prefixes
- GenerateKeyID() for generating random key IDs
- FormatAPIKey() helper for formatting API key strings
- cmd/create-integration CLI tool for creating integrations

* feat(store): add description field to integration metadata

Add Description field to clientIntegrationMeta struct and update
CreateIntegration to accept a description parameter. Split the CLI
-description flag into -integration-description and -key-description.

* test(store): add tests for 100% coverage on clientintegration.go

Add function variables (generateKeyIDFunc, generateAPIKeyFunc, randRead)
to enable mocking random generation in tests. Add tests for error paths
in GenerateKeyID and CreateAPIKey.

* feat(auth): add tier field to API keys and JWT tokens

Add a tier field (integer, 0-N, default 0) to each API key stored in
Datastore and include it as a claim in generated JWTs. The tier is
stored per-key to maintain O(1) key validation without additional
fetches.

* fix(store): keep ki_ prefix in keyID for datastore consistency

parseAPIKey now preserves the ki_ prefix in keyID instead of stripping
it, ensuring CreateAPIKey and ValidateKey use the same key format for
datastore operations.

* fix: lc "error"

* test(store): add end-to-end test for client integration flow

78 of 118 new or added lines in 4 files covered. (66.1%)

366 of 530 relevant lines covered (69.06%)

0.77 hits per line