Phase 1 — connection fixes:
- routing_manager.stop(): remove iptables -F / -t nat -F nuclear flush that
would wipe WireGuard MASQUERADE and all peer rules on any UI stop action
- wireguard_manager.add_cell_peer(): reject vpn_subnet that overlaps the local
WG network (routing blackhole — was the root cause of no handshake)
- wireguard_manager._syncconf(): pass Endpoint to 'wg set' so cell peers with
static endpoints are synced to the kernel (not just AllowedIPs)
Phase 2 — service-sharing permissions backend:
- firewall_manager: add _cell_tag(), clear_cell_rules(), apply_cell_rules(),
apply_all_cell_rules() — iptables FORWARD rules for cell-to-cell traffic
using 'pic-cell-<name>' comment tags, distinct from 'pic-peer-*'
- app.py startup enforcement: call apply_all_cell_rules(cell_links) so rules
survive API restarts
- cell_link_manager: permissions schema {inbound, outbound} per service;
lazy migration for existing entries; update_permissions(), get_permissions();
apply_cell_rules wired into add_connection/remove_connection
- routes/cells.py: GET /api/cells/services, GET+PUT /api/cells/<n>/permissions;
RuntimeError now returns 400 (not 500) from add_connection
Removed broken 'test' cell (subnet 10.0.0.0/24 collided with local WG network).
Second PIC must use a distinct subnet (e.g. 10.0.1.0/24) before reconnecting.
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
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