Phase 6: Runtime reconnect + status polling + security + docs

[ajianaz]

Goal

Runtime reconnect (no restart), live status polling, security polish, docs.

Scope / Files

• src-tauri/src/commands.rs — reconnect_connection(id)
• src/lib/stores/connections.ts — periodic health poll
• .agent.md, CHANGELOG.md

Tasks

• reconnect_connection(id) — rebuild adapter live without app restart
• Status polling — periodic health check updates status badge
• Security: confirm db file perms 600; mask token in logs; clear token on delete
• Docs: .agent.md (connection-layer rule), CHANGELOG.md entry

Acceptance

• Switch backends without restart; status stays fresh when server goes up/down; tokens never leak in logs.

Parent: #37 · Plan: docs/plans/remote-connection-manager.md (Phase 6)