Feature Description

Add a new MCP tool get_pending_invitations that lists pending LinkedIn network invitations (received or sent), mirroring the page at https://www.linkedin.com/mynetwork/invitation-manager/.

Initial scope is read-only. Accept / ignore / withdraw actions are intentionally out of scope for the first iteration to keep the PR focused; they can land in a follow-up if this one is accepted.

Use Case

The current toolset covers messaging (get_inbox, get_conversation) but exposes no surface for pending connection invitations, which is a primary inbound channel on LinkedIn:

• Recruiters frequently use "Invite + note" instead of InMail. Those messages live in /mynetwork/invitation-manager/ and never appear in get_inbox until the invitation is accepted, so an AI agent assisting with inbound triage cannot see them today.
• Users need a non-destructive way to triage incoming invitations before deciding whether to accept (which would then make the conversation visible to other tools in this server).
• Symmetric sent listing is useful for reviewing outstanding outbound invitations a user has issued.

Suggested Approach

Follow the existing get_inbox pattern very closely:

• New file linkedin_mcp_server/tools/network.py exposing register_network_tools(mcp, *, tool_timeout) and the tool function get_pending_invitations(ctx, limit, kind, extractor).
• New extractor method LinkedInExtractor.get_pending_invitations(limit, kind) in scraping/extractor.py. Navigation -> detect_rate_limit -> _wait_for_main_text -> handle_modal_close -> _scroll_main_scrollable_region -> _extract_root_content(["main"]) -> strip_linkedin_noise -> build_references -> _single_section_result, identical to get_inbox.
• Register the new module from server.py::create_mcp_server().
• Parameter shape: limit: int (1-100, default 20), kind: Literal["received", "sent"] = "received". URL: /mynetwork/invitation-manager/{kind}/.
• Return format: standard {url, sections: {invitations: raw_text}, references?: {invitations: [...]}}. No new section dict in fields.py needed — this is a one-page tool, not a sectioned scraper.
• Tests: TestNetworkTools class in tests/test_tools.py mirroring TestMessagingTools::test_get_inbox_success; add get_pending_invitations to _make_mock_extractor.
• Docs: README tool table, docs/docker-hub.md features list, manifest.json tools array.

I'm happy to open the PR myself; filing this issue first per CONTRIBUTING.md.