This PR implements a new CLI flag --extra-interests (and envvar CERAMIC_ONE_EXTRA_INTERESTS) to automatically register node interests when starting the daemon, eliminating the need for manual API calls after startup.

Changes

• New CLI argument --extra-interests, accepting comma-separated stream/model IDs
• New startup module one/src/startup.rs to orchestrate daemon configuration tasks tangential to the startup process
• Integration:
  • Uses the existing InterestService
  • Uses the same pattern as the /ceramic/interests API handler
  • Processes interests early in daemon startup, after services init but before P2P setup

Safety & backward compatibility

• Optional flag with empty default
• Stream ID format and multibase decoding validation
• Descriptive errors for invalid inputs + handling of failures
• Logging for registration status and debugging
• Idempotent: Handles already-registered interests without errors

Usage

Flag

ceramic-one daemon --extra-interests model1,model2

Envvar

export CERAMIC_ONE_EXTRA_INTERESTS="model1,model2"
ceramic-one daemon

Tests

Test suite added to one/src/startup.rs, can be run with the C1 crate:

> cargo test --locked --release -p ceramic-one
[ build logs ]

running 8 tests
test http::test::expected_prom_cardinality_replacement ... ok
test http::test::should_not_replace_extra_parts ... ok
test http::test::should_not_replace_wrong_method ... ok
test startup::tests::test_process_extra_interests_invalid_stream_id ... ok
test startup::tests::test_process_extra_interests_empty ... ok
test startup::tests::test_process_extra_interests_multibase_decoding ... ok
test startup::tests::test_process_extra_interests_mixed_valid_invalid ... ok
test startup::tests::test_process_extra_interests_whitespace_handling ... ok

test result: ok. 8 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.01s

Other notes

It seems to work, but I can't say I fully understand what's going on with the interest builder EventID fencepost ranges. Probably a good spot to focus a review 👀

Closes #707