feat: close parser gaps for core vendors (Nokia, Juniper, Arista)

[Copilot]

Adds missing CLI parsers for LLDP, LACP, and VLAN across core vendors — the primary gap identified in ROADMAP.md Phase 1.

Nokia SROS

• parse_lldp_neighbors — show system lldp neighbor

Juniper JunOS

• parse_lldp_neighbors_junos — show lldp neighbors
• parse_lacp_interfaces_junos — show lacp interfaces (aggregated interface membership, activity, MUX state)

Arista EOS

• parse_lldp_neighbors_eos — JSON eAPI
• parse_lldp_neighbors_eos_text — text fallback
• parse_vlan_eos — JSON eAPI
• parse_vlan_eos_text — text fallback

All new parsers follow existing conventions: return list[dict], normalize field names across vendors, handle empty/malformed input gracefully.

Tests

• tests/test_parsers_juniper.py — new file covering LLDP + LACP
• tests/test_parsers_arista.py — new file covering LLDP + VLAN (JSON and text)
• tests/test_parsers_nokia.py — extended with LLDP tests

from netops.parsers.nokia_sros import parse_lldp_neighbors
from netops.parsers.juniper import parse_lldp_neighbors_junos, parse_lacp_interfaces_junos
from netops.parsers.arista import parse_vlan_eos, parse_lldp_neighbors_eos

• Fixes Close parser gaps for core vendors (Nokia, Juniper, Arista) #123

[Copilot]

Pull request overview

This PR closes parser coverage gaps for core network vendors by adding/expanding LLDP, LACP, and VLAN parsers (Nokia SR OS, Juniper JunOS, Arista EOS), and adds/updates tests and CI/dev tooling to support the new functionality.

Changes:

• Added new CLI/eAPI parsers: Nokia SR OS LLDP neighbors, JunOS LLDP neighbors + LACP interfaces, EOS LLDP neighbors + VLANs (JSON + text fallbacks).
• Added new vendor-focused parser test suites (Juniper, Arista) and extended Nokia parser tests.
• Tightened dev/CI setup (mypy pin + overrides, install tui extras in CI) and minor TUI/test cleanup.

Reviewed changes

Copilot reviewed 21 out of 21 changed files in this pull request and generated 5 comments.

Show a summary per file

File	Description
tests/test_tui_smoke.py	Minor test cleanup (unused pilot var, import formatting).
tests/test_tui_mouse.py	Removes unused import; avoids unused pilot variable.
tests/test_tui_async.py	Moves scan_subnet_async import to module scope.
tests/test_scan_always_enriches.py	Removes unused imports; avoids unused result variable.
tests/test_real_devices.py	Test cleanup (removes unused import/variable).
tests/test_parsers_nokia.py	Adds LLDP neighbor parser fixtures + tests for Nokia SR OS.
tests/test_parsers_juniper.py	New tests for JunOS LLDP neighbors + LACP interfaces parsing.
tests/test_parsers_arista.py	New tests for EOS LLDP + VLAN parsing (JSON + text).
tests/test_integration_tui.py	Removes unused imports; minor import ordering.
tests/test_integration_scan.py	Removes unused import from mock SSH server module.
tests/test_community_registry.py	Removes unused import.
tests/mock_ssh_server.py	Switches Generator import to collections.abc.
pyproject.toml	Pins mypy <2.0 and adds per-module mypy overrides.
netops/tui/__init__.py	TUI typing/docstring improvements and paste handling; refactors some list parsing/comprehensions.
netops/parsers/nokia_sros.py	Adds parse_lldp_neighbors for SR OS CLI output.
netops/parsers/juniper.py	Adds parse_lldp_neighbors_junos and parse_lacp_interfaces_junos.
netops/parsers/arista.py	Adds EOS LLDP and VLAN parsers (JSON + text).
netops/inventory/scan.py	Minor typing/ordering tweak; docstring mentions optional SSH port override.
netops/core/community.py	Formatting-only import wrapping / docstring spacing.
netops/__main__.py	Adds a short docstring to main().
.github/workflows/ci.yml	Installs tui extras in CI.