feat(generator): derive operation bindings

[nmorgan-cb]

Description

Stacks on #7 and delivers the compatibility-aware operation binding phase for the full SDK generator.

• Adds immutable OperationBinding metadata for one OpenAPI operation's Java SDK ownership and names.
• Adds deterministic binding derivation from the parsed committed spec: tag-based service folders, service names, operation method names, request omission, and pagination.
• Adds Java compatibility renames for existing public SDK vocabulary and routes the Travel Rule tag into transactions.
• Adds validation for one-to-one operation coverage, sorted bindings, duplicate Java service methods, and path-parameter declarations.
• Adds a regression test covering the 103-operation inventory plus representative Orders and Travel Rule binding behavior.

No service source files are generated or replaced in this phase. It establishes the validated contract that the request/response/service emitters will consume in the next stacked PR.

Generated with Toshi

Type of Change

• Bug fix
• New feature
• Breaking change
• Dependency update
• Refactor / cleanup
• Other (describe below)

Checklist

• Tests included / updated
• Changelog updated
• Version bump if needed

[nmorgan-cb]

Superseded by #7; its commits were consolidated into the parent draft PR.