v5.0.0

Topology:

• 9-device Cisco IOS/IOS-XE topology (2 platforms: cisco_iol, cisco_c8000v)
• OSPF Area 0 + Area 1 stub, BGP dual-ISP (AS1010↔AS4040/AS5050), BGP AS2020 at X1C
• 5 SLA paths: OSPF cost-based primary/backup ABR selection (A1C/A2C via C1C/C2C)
• Full redundancy across the Access, Collapsed Core, Edge-to-ISP layers

Transports:

• 2-tier for c8000v: RESTCONF (primary, httpx/JSON) → SSH (fallback, Scrapli/CLI)
• SSH-only for IOL: A1C, A2C, IAN, IBN
• ActionChain class in platform_map.py for ordered transport fallback
• Config push: all devices use SSH CLI

Architecture:

• Clear separation between Interactive and Service modes
• PLATFORM_MAP with 2 distinct sections: ios, ios_restconf
• transport/restconf.py — httpx AsyncClient for RESTCONF reads;
• RESTCONF now has dedicated BGP/OSPF trim functions to reduce token cost
• Transport dispatcher with ActionChain fallback iteration + _transport_used tag

Fixes:

• Deferred-event scanner deduplicates by (device, msg) — SLA oscillation (Down→Up→Down) no longer triggers false deferred sessions
• Jira client: module-level globals replaced with _config() helper that reads env vars at call time (fixes stale-config under systemd)
• oncall-watcher.service: EnvironmentFile commented out — systemd doesn't strip inline comments from .env, corrupting values that python-dotenv handles correctly

Transport Visibility:

• Result dict includes _command field (actual CLI command or RESTCONF URL) right after device for inline visibility in Claude Code
• Debug logging added to SSH and RESTCONF executors

Testing:

• 416 unit + watcher-events tests (up from 244)
• 16 unit test files, covering: transport dispatch, RESTCONF/SSH executors, config push, tool layer, Jira tools
• New integration tests: full MCP tool coverage, transport layer, platform coverage
• New test: deferred excludes trigger device's repeated SLA oscillation events