Verified the role against the real matrix-stack Helm chart (pulled 26.6.1)
and fixed divergences found during review.
Bugs:
- Add MAS OIDC discovery router: /.well-known/openid-configuration must hit
the MAS root listener (8082), not web (8080) — was 404, breaking OIDC login
- Add Synapse ip_range_blacklist (full SSRF blocklist for all outbound
federation/identity requests; previously only url-preview blacklist present)
- Make federation_client_minimum_tls_version unconditional (chart sets it in
shared-underrides; role only set it when federation was enabled)
- Restart only rendered fed-reader replicas in the handler instead of the
whole compose project (missing services: filter)
Chart alignment (26.5.1 -> 26.6.1):
- Bump chart version and all image tags (mas -> matrix-authentication-service
-pro:1.18.0, postgres 17, synapse v1.154.0-pro.1, element-web v1.12.21, etc.)
- redis maxmemory 256mb -> chart default 40mb (configurable)
- Add element-web map_style_url (configurable)
Hardening / hygiene:
- Validate ess_rtc_external_ip is a real IP (regex, no extra collection dep)
- Read admin password from the in-container secret file instead of passing it
on the host process list during mas-cli register-user
- apt cache_valid_time, postgres first-boot-only comment, haproxy failover note
- Add meta/argument_specs.yml documenting all public variables
- README: chart version, service count, OIDC discovery verification step
Signed-off-by: Simon Bärlocher <simon@whatwedo.ch>