fix(translator): ESM-safe registry + tool-id pairing + responses max_tokens; add real-creds tests

- translator/index.js: replace require() with static side-effect imports (ESM-safe),
  lazy-init registry maps to survive circular import order
- openai-responses->openai: map max_output_tokens -> max_tokens (avoid leaking field upstream)
- gemini/antigravity -> openai: derive deterministic tool_call id from name so
  functionCall/functionResponse pair correctly (fixes provider tool-pairing 400s)
- add offline unit tests (finish-reason, usage, session-manager, ollama malformed args, const guard)
- add real-creds integration tests (provider-cases + all-formats matrix: 6 inbound formats x 4 scenarios)

Includes co-located provider registry refactor (pricing/capabilities/media providers) and sessionManager updates.

Co-authored-by: Cursor <cursoragent@cursor.com>

open-sse/providers/registry/inworld.js

@@ -0,0 +1,36 @@
+export default {
+  id: "inworld",
+  alias: "inworld",
+  display: {
+    name: "Inworld TTS",
+    icon: "record_voice_over",
+    color: "#FF6B6B",
+    textIcon: "IW",
+    website: "https://inworld.ai",
+    notice: {
+      text: "Free tier: 40 minutes/month TTS. Paid: TTS-1.5 Mini $0.01/min ($15/1M chars), TTS-1.5 Max $0.025/min ($30/1M chars). 270+ voices, 15 languages.",
+      apiKeyUrl: "https://platform.inworld.ai/api-keys"
+    }
+  },
+  category: "apikey",
+  authType: "apikey",
+  serviceKinds: [
+    "tts"
+  ],
+  ttsConfig: {
+    baseUrl: "https://api.inworld.ai/tts/v1/voice",
+    authType: "apikey",
+    authHeader: "basic",
+    format: "inworld",
+    models: [
+      {
+        id: "inworld-tts-1.5-mini",
+        name: "Inworld TTS 1.5 Mini ($0.01/min)"
+      },
+      {
+        id: "inworld-tts-1.5-max",
+        name: "Inworld TTS 1.5 Max ($0.025/min)"
+      }
+    ]
+  }
+};