fix(freshdesk): upgrade to SDK 2.0.0, add unit tests (#287)

* fix(freshdesk): upgrade to SDK 2.0.0, add unit tests

- Update SDK to 2.0.0: all context.fetch() calls access .data
- Import and use ActionResult/ActionError return types
- Fix auth: use flat context.auth dict (custom auth type)
- Remove legacy result/error fields from all output schemas
- Bump config.json version to 2.0.0
- Add 88 pytest unit tests covering all 17 actions

* fix(freshdesk): fix optional param access warnings and add integration tests

- Replace all `inputs["param"]` with `inputs.get("param")` for optional
  parameters to prevent KeyError if the parameter is not provided
- Add freshdesk/tests/test_freshdesk_integration.py with pytest.mark.integration
  tests that skip when FRESHDESK_API_KEY or FRESHDESK_DOMAIN env vars are missing

* test(freshdesk): modernize live test suite

* test(freshdesk): add e2e coverage for all 20 actions, fix note field nullability

- Fixed import in test file (module vs Integration instance)
- Expanded integration tests from 7 to 8 covering all 20 actions
- Added company lifecycle (create, get, update, delete)
- Added contact lifecycle (create, get, update, delete)
- Added ticket lifecycle (create, get, update, list_conversations, create_note, create_reply, delete)
- Added search_companies and search_contacts read-only tests
- Fixed config.json: note field type string -> ["string", "null"] to match Freshdesk API returning null

---------

Co-authored-by: Shubhank <72601061+Sagsgit@users.noreply.github.com>
Co-authored-by: Kai Koenig <kai@ventego-creative.co.nz>

Author: Shubhank-Jonnada

.env.example

@@ -18,6 +18,10 @@
 # -- ClickUp --
 # CLICKUP_ACCESS_TOKEN=
 
+# -- Freshdesk --
+# FRESHDESK_API_KEY=
+# FRESHDESK_DOMAIN=
+
 # -- NZBN --
 # NZBN_CLIENT_ID=
 # NZBN_CLIENT_SECRET=