review fixes apr 2026 (#130)

* Multiple fixes

- refresh coordinator dedup + memory pressure wire
- middleware sse consolidation + timer leak + claim cache
- universal cache sync backfill + isDebug gate
- lazy background task race
- memory monitor stw cached + refresh() api

* fix(auth): suppress OIDC redirects on non-navigation requests

- [x] Add isNonNavigationRequest using Sec-Fetch-Mode and Accept headers
- [x] Add comprehensive TestIsNonNavigationRequest
- [x] Update ServeHTTP to 401 non-navigation and AJAX requests

Fixes #129

* feat(config): add custom CA and insecure skip verify for OIDC TLS

- [x] Add CACertPath, CACertPEM, InsecureSkipVerify to Config
- [x] Implement loadCACertPool for CA bundle loading
- [x] Update HTTPClientConfig with RootCAs and InsecureSkipVerify
- [x] Apply CA pool and skip verify to pooled HTTP clients
- [x] Enhance configKey to distinguish TLS configs
- [x] Add comprehensive ca_cert_test.go

Fixes #125

* feat(oidc): add custom CA certificate support for private OIDC providers

- [x] Add caCertPath, caCertPEM, insecureSkipVerify config options
- [x] Update traefik.yml with new OIDC client config fields
- [x] Add configuration schema descriptions for new options
- [x] Update README table and add Custom CA Certificates section

* Fix the documentation.

* test(redis): add oversized argument rejection test

- [x] Add TestRedisConn_RejectOversizedArgumentBytes
- [x] Import strings package

* Dependencies cleanup

docs/CONFIGURATION.md

@@ -52,7 +52,7 @@ spec:
 | `logoutURL` | string | `callbackURL + "/logout"` | Path for logout requests |
 | `postLogoutRedirectURI` | string | `/` | Redirect URL after logout |
 | `logLevel` | string | `info` | Logging verbosity (`debug`, `info`, `error`) |
-| `forceHTTPS` | bool | `false` | Force HTTPS for redirect URIs |
+| `forceHTTPS` | bool | `true` | Force HTTPS for redirect URIs (set `false` only for plaintext HTTP local dev) |
 | `rateLimit` | int | `100` | Maximum requests per second |
 | `excludedURLs` | []string | none | Paths that bypass authentication |
 | `revocationURL` | string | auto-discovered | Token revocation endpoint |
@@ -62,13 +62,13 @@ spec:
 
 ### TLS Termination at Load Balancer
 
-If running Traefik behind a load balancer (AWS ALB, Google Cloud LB, Azure App Gateway) that terminates TLS:
+`forceHTTPS` defaults to `true`, so redirect URIs always use `https://`. This is
+the correct default behind any TLS-terminating load balancer (AWS ALB, Google
+Cloud LB, Azure App Gateway) — `X-Forwarded-Proto` cannot be trusted (ALB may
+overwrite it).
 
-```yaml
-forceHTTPS: true  # Required for correct redirect URIs
-```
-
-Without this setting, redirect URIs will use `http://` instead of `https://`, causing OAuth callback failures.
+Set `forceHTTPS: false` only when you serve OIDC over plaintext HTTP (local
+dev). Otherwise leave it at default.
 
 ---