fix(responses): support tool namespace; bump to 1.0.14 (dima-2026080600118044658)

[mackong]

Summary

Adds support for the type: "namespace" tool in the responses protocol by flattening each namespace into individual type: "function" tools named <namespace>.<tool> (e.g. agents.spawn_agent), so downstream providers that don't understand the namespace tool type receive plain function tools.

Changes

• New shared helper expandNamespaceTools() in src/responses/utils.ts
• Applied in all three Responses converters:
  • ResponsesToChatCompletionConverter (forward convertTools + response-echo path)
  • ResponsesToMessagesConverter (convertTools)
  • ResponsesToGeminiConverter (convertTools)
• Non-namespace tools pass through untouched; original order preserved; no-op when no namespace present
• Bump version 1.0.13 → 1.0.14

Tests

• 3 new tests (CC / messages / gemini) asserting the exact issue example expands to agents.spawn_agent
• Full suite: 557/557 passing; tsc --noEmit clean