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/jina-reader.js

@@ -0,0 +1,34 @@
+export default {
+  id: "jina-reader",
+  alias: "jina-reader",
+  display: {
+    name: "Jina Reader",
+    icon: "menu_book",
+    color: "#000000",
+    textIcon: "JR",
+    website: "https://jina.ai/reader",
+    notice: {
+      apiKeyUrl: "https://jina.ai/?sui=apikey"
+    }
+  },
+  category: "apikey",
+  authType: "apikey",
+  serviceKinds: [
+    "webFetch"
+  ],
+  fetchConfig: {
+    baseUrl: "https://r.jina.ai",
+    method: "GET",
+    authType: "apikey",
+    authHeader: "bearer",
+    costPerQuery: 0,
+    freeMonthlyQuota: 1000000,
+    formats: [
+      "markdown",
+      "text",
+      "html"
+    ],
+    maxCharacters: 200000,
+    timeoutMs: 30000
+  }
+};