feat(responses): add canonical entity response actions

[nikgraf]

Summary

Geo SDK consumers can now submit curation, stance, and veracity responses through the canonical geo.responses namespace. The existing geo.entityVotes methods remain compatible but are deprecated, and relation-target responses remain deferred.

Each method maps to the exact gaia protocol action and reuses the existing entity response encoding. Kind-specific clear methods remove only their matching response, while e2e preflight checks the kind-aware GraphQL schema and all six new permissionless action registrations before transaction flows run.

Session-settled decisions carried from planning: geo.responses is canonical (user-directed, over extending geo.entityVotes), and this PR supports entity targets only (user-directed).

Validation

• Full test suite: 55 files passed, 1 skipped; 566 tests passed, 4 skipped.
• TypeScript compilation and Biome checks pass.
• E2E test collection passes. Read-only testnet checks confirmed the kind-aware schema and permissionless registrations. Live transaction flows were not run because no signing key was available.

Related

Related: geobrowser/gaia#872