Make Soroswap, Aquarius, and Reflector config per-network

[Olorunfemi20]

Summary

Several venue endpoints were hardcoded mainnet-only: the Soroswap token-list URL, the Aquarius pools API, and the default Soroswap factory / Reflector contract only had sensible values for mainnet. On testnet these differ or do not exist at all, which blocks running the dual-network ingesters cleanly.

This PR moves the Soroswap token-list URL and the Aquarius API URL into the per-network config block (NetworkConfig), and adds an enabled flag per venue per network so a venue with no usable deployment on a given network can be skipped cleanly instead of failing.

Changes

• src/config.ts: adds soroswap.enabled, soroswap.tokenListUrl, aquarius.enabled, aquarius.apiUrl, and oracle.enabled to NetworkConfig, each resolved per-network with the existing paired-var -> generic-var -> default precedence. Aquarius defaults to disabled on testnet (no public testnet deployment) and enabled on mainnet; Soroswap defaults to enabled on both. oracle.enabled is derived from whether a Reflector contract id is configured for the network.
• src/ingesters/soroswap.ts: removes the hardcoded SOROSWAP_TOKEN_LIST_URL constant in favor of config.soroswap.tokenListUrl; fetchSoroswapTokenList now takes the URL as a parameter (defaulting to config) so tests can override it; startSoroswapIngester returns immediately without entering its polling loop when Soroswap is disabled on the active network.
• src/ingest/venues/aquarius.ts: removes the hardcoded AQUARIUS_AMM_API constant in favor of config.aquarius.apiUrl; fetchAquariusPools takes the URL as a parameter; startAquariusIngester returns immediately when Aquarius is disabled on the active network.
• src/ingest/oracles/reflector.ts: fetchReflectorPrice returns null immediately when config.oracle.enabled is false, rather than attempting a simulation against an empty contract id.
• .env.example: documents the new SOROSWAP_ENABLED_*, AQUARIUS_ENABLED_*, SOROSWAP_TOKEN_LIST_URL, and AQUARIUS_API_URL vars.

Related issue

closes #116

Type of change

• New feature
• Bug fix
• Refactor
• Docs
• Tests
• CI / tooling

Testing

• Added src/__tests__/networkVenueConfig.test.ts covering the enable-flag defaults/overrides and URL resolution for both networks.
• Added src/__tests__/aquariusIngester.test.ts and src/__tests__/soroswapEnabled.test.ts covering the disabled-venue skip path and the configurable API URL.
• npx tsc --noEmit passes.
• npx vitest run passes (190 passed, 1 skipped); the two pre-existing failures in bestRoute.test.ts and aggregator.property.test.ts are unrelated to this change and reproduce identically on main.

Checklist

• I have read CONTRIBUTING.md
• npx tsc --noEmit passes
• npm run build passes
• I added / updated tests where relevant
• I updated docs where relevant

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[Miracle656]

Careful work. Per-network venue config with ${VAR}_${SUFFIX} overrides falling back to a shared default is the right shape, and the defaults encode real knowledge rather than guesses:

const aquariusEnabled =
  (process.env[`AQUARIUS_ENABLED_${suffix}`] ?? (network === 'mainnet' ? 'true' : 'false')) …

Defaulting Aquarius off on testnet because there is no public testnet deployment is exactly the kind of thing that otherwise shows up as a mystery ingester crash loop six months later. The comment explaining why is worth as much as the code.

The detail I liked most:

const oracleEnabled =
  (process.env[`REFLECTOR_ENABLED_${suffix}`] ?? 'true').toLowerCase() !== 'false' &&
  reflectorContractId !== ''

An oracle cannot be enabled without a contract id, so the flag can't claim a capability the config can't deliver. That's the same discipline #143 is missing on /supported, and it's the right instinct.

Two minor notes, neither blocking:

• (… ?? 'true').toLowerCase() !== 'false' treats every value except false as enabled, so SOROSWAP_ENABLED_MAINNET=0 or =no silently enables it. Common enough pattern, but a shared envFlag(name, default) helper would make the three call sites agree and handle 0/no/off.
• AQUARIUS_API_URL defaults to a trailing-slash URL (…/pools/) while the others don't. Worth checking the join logic in aquarius.ts doesn't produce a double slash.

No schema changes here, so this is independent of the #141 ordering problem and can land whenever.