v2.2.3: fix offline alerts never firing (sample retention)

v2.2.2: fix alert sample retention so general rules fire notifications

chore(frontend-templates): bump admin-dist v2.2.0

v2.1.4

fix(mcp): accept agents reporting version without the v prefix and stop masking tool errors as -32602 by omitting schema-violating structuredContent on error responses.

v2.1.3

fix(mcp): accept agents reporting version without the v prefix (restores
server.exec and fs.* on all agents) and stop masking tool errors as -32602
by omitting schema-violating structuredContent on error responses.

v2.1.1

fix(auth): always serialize User.Role so admin (role 0) is not omitted in the
profile response. Fixes the admin menu (user management / settings) disappearing
for administrators.

v2.1.0

PAT auth + scoped REST/MCP access, CSRF protection, MCP exec/filesystem
handlers, gRPC stream WAF hardening, NAT reserved-hosts and DDNS worker-time
ownership re-checks. Embeds admin-frontend v2.1.0 and user-frontend v2.0.4.