chore: update basin endpoint from b.aws.s2.dev to b.s2.dev

[shikhar]

Summary

• Update basin endpoint from b.aws.s2.dev to b.s2.dev in both lite handler paths and SDK default endpoints.

Test plan

• Verify basin connections work with the new endpoint

🤖 Generated with Claude Code

[greptile-apps]

Greptile Summary

This PR updates the S2 basin endpoint domain from b.aws.s2.dev to b.s2.dev in two places: the lite handler path constants and the SDK's default for_aws() endpoint configuration. The change is minimal, consistent, and no stale references to the old domain remain in the codebase.

• lite/src/handlers/v1/paths.rs: cloud_endpoints::BASIN updated from https://{basin}.b.aws.s2.dev/v1 to https://{basin}.b.s2.dev/v1
• sdk/src/types.rs: basin_authority in S2Endpoints::for_aws() updated from b.aws.s2.dev to b.s2.dev
• The account endpoint (aws.s2.dev) is intentionally left unchanged in both files, consistent with the PR scope

Confidence Score: 5/5

• Safe to merge — minimal, targeted endpoint string update with no logic changes and no remaining stale references.
• Both changed lines are simple string literal replacements. A grep confirms no remaining occurrences of b.aws.s2.dev anywhere in the repository. The account endpoint is deliberately unchanged, and the PR scope is exactly as described.
• No files require special attention.

Important Files Changed

Filename	Overview
lite/src/handlers/v1/paths.rs	Updates the BASIN cloud endpoint constant from b.aws.s2.dev to b.s2.dev; ACCOUNT endpoint (aws.s2.dev) intentionally unchanged.
sdk/src/types.rs	Updates basin_authority in S2Endpoints::for_aws() from b.aws.s2.dev to b.s2.dev; account authority (aws.s2.dev) intentionally unchanged.

Flowchart

%%{init: {'theme': 'neutral'}}%%
flowchart TD
    Client["Client Request"]
    Client --> AccountOp["Account Operation"]
    Client --> BasinOp["Basin Operation"]

    AccountOp --> AccountEndpoint["aws.s2.dev/v1\n(unchanged)"]
    BasinOp --> BasinEndpoint["{basin}.b.s2.dev/v1\n(updated from b.aws.s2.dev)"]

    subgraph lite["lite/src/handlers/v1/paths.rs"]
        AccountEndpoint
        BasinEndpoint
    end

    subgraph sdk["sdk/src/types.rs — S2Endpoints::for_aws()"]
        AccountAuth["account_authority: aws.s2.dev\n(unchanged)"]
        BasinAuth["basin_authority: b.s2.dev\n(updated)"]
    end

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