docs: v2.1.0 release polish — strip internal bundle/phase tags, update status for OIDC ship

README:
- Rewrite Status block: drop the stale 'federated identity not yet
  shipped' line; flag v2.1.0 OIDC + sessions + back-channel logout
  + break-glass as early-access; encourage GitHub issues for IdP
  rough edges. (A1 framing — keep early-access umbrella, no
  SAML/WebAuthn/JIT roadmap teaser.)
- Add OIDC SSO bullet to 'What it does' covering per-IdP runbooks,
  group-claim → role mapping, AES-256-GCM client_secret encryption,
  JWKS auto-refresh, PKCE-S256, RFC 9700 §4.7.1 pre-login binding,
  RFC 9207 iss check, __Host- cookies, CSRF rotation, idle+absolute
  expiry, BCL, break-glass admin.
- Update Security paragraph: three auth paths (API keys / OIDC /
  break-glass), HMAC-signed sessions, CSRF rotation, RFC OIDC BCL.
- Correct CI coverage thresholds against
  .github/coverage-thresholds.yml (service 70%, handler 75%,
  crypto 88%, auth packages 85-95%); 'static analysis' replaces
  the inflated '11 linters' claim (actual count is 4 active).

Docs B3 sweep — strip operator-facing 'Bundle N' / 'Phase N' tags:
- docs/operator/auth-threat-model.md — rewrite intro; rename 5 H2
  sections (API-key + RBAC defenses / OIDC + sessions + break-glass
  defenses / OIDC + sessions threat catalogue / Closed federated-
  identity threats / Future-work threats); clean ~12 H3/prose hits.
- docs/operator/rbac.md — strip Bundle 1 framing from intro,
  scope_id deferral note, MCP tools section, day-0 bootstrap, and
  'Where to look next'.
- docs/operator/auth-benchmarks.md — drop 'Phase 14' framing from
  title intro, hardware floor caption, result table caption,
  methodology, and pre-merge audit section.
- docs/operator/security.md — already cleaned earlier this session
  (RBAC / day-0 / approval-bypass / OIDC federation / sessions /
  OIDC first-admin / break-glass H3s).
- docs/operator/oidc-runbooks/{index,keycloak,authentik,okta,
  azure-ad}.md — strip Auth Bundle 2 framing + Phase 10/3/4
  references; replace with feature-name prose.
- docs/operator/legacy-clients-tls-1.2.md — drop Bundle F / M-023
  audit-reference framing; keep CWE-326.
- docs/operator/database-tls.md — drop Bundle B / M-018 framing
  from intro + Helm section.
- docs/operator/runbooks/disaster-recovery.md — drop 'Production
  hardening II Phase 10' status callout.
- docs/migration/oidc-enable.md — retitle 'Enable OIDC SSO';
  strip Bundle 1/2 framing from prereqs, troubleshooting, related
  docs; update __Host- cookie callout from 'audit MED-14' to
  v2.1.0-BREAKING.
- docs/migration/api-keys-to-rbac.md — strip Bundle 1 framing from
  intro, migration table, IsAdmin section, and cross-references.
- docs/migration/acme-from-cert-manager.md — strip residual
  'Phase 5' tags from cert-manager integration test references.
- docs/reference/configuration.md — retitle Auth section.
- docs/reference/profiles.md — strip Bundle 1 Phase 9 framing
  from RequiresApproval section + Related list.
- docs/reference/auth-standards-implemented.md — rewrite intro
  (API-key + RBAC + OIDC + sessions + back-channel logout +
  break-glass); rename 'Bundle 1 (RBAC) standards covered
  separately' H2; clean per-row Phase references.
- docs/README.md — rewrite nav-table entries to drop Bundle 1/2
  parentheticals; retitle 'Enable OIDC SSO' migration entry.

No code or test changes; pure operator-facing prose polish for
the v2.1.0 tag.

README.md

@@ -13,7 +13,7 @@ certctl is a self-hosted platform that automates the entire TLS certificate life
 
 The CA/Browser Forum's [Ballot SC-081v3](https://cabforum.org/2025/04/11/ballot-sc081v3-introduce-schedule-of-reducing-validity-and-data-reuse-periods/) caps public TLS certificates at **200 days by March 2026**, **100 days by 2027**, and **47 days by 2029**. At 47-day lifespans, a team managing 100 certificates is processing 7+ renewals per week, every week, forever. Manual workflows stop being a choice.
 
-> **Status: Early-access.** Production-quality core (Local CA, ACME, agent deployment, CRUD, audit, [role-based authz](docs/operator/rbac.md) with auditor split + day-0 bootstrap + four-eyes approval) with broader feature surface (intermediate CA hierarchy, ACME/SCEP/EST servers, network appliances) still maturing. [Federated identity](docs/operator/auth-threat-model.md#threats-bundle-1-does-not-close) (OIDC/SAML/WebAuthn, server-side sessions, break-glass accounts, JIT elevation) is the next slice on the roadmap, not yet shipped. Lab and dev deployments encouraged; production deployments welcome with the understanding that customer-scale battle-testing is in progress. File GitHub issues for any rough edges.
+> **Status: Early-access.** Production-quality core (Local CA, ACME, agent deployment, CRUD, audit, [role-based authz](docs/operator/rbac.md) with auditor split + day-0 bootstrap + four-eyes approval) with broader feature surface (intermediate CA hierarchy, ACME/SCEP/EST servers, network appliances) still maturing. **v2.1.0 ships [federated identity](docs/operator/oidc-runbooks/index.md) in early-access:** OIDC SSO (Keycloak, Authentik, Okta, Auth0, Entra ID, Google Workspace), HMAC-signed server-side sessions with `__Host-` cookies + CSRF rotation, [RFC OIDC Back-Channel Logout](docs/reference/auth-standards-implemented.md), and Argon2id [break-glass admin](docs/operator/security.md). Lab and dev deployments encouraged; production deployments welcome with the understanding that customer-scale battle-testing is in progress. **[Open a GitHub issue](https://github.com/certctl-io/certctl/issues) for any rough edges** — especially in the new federated-identity surface, where real-world IdP shapes surface fast.
 
 > **Actively maintained, shipping weekly.** [Open an issue](https://github.com/certctl-io/certctl/issues) if something breaks. CI runs the full test suite with race detection, static analysis, and vulnerability scanning on every commit.
 
@@ -66,6 +66,7 @@ certctl handles the full certificate lifecycle in one self-hosted control plane:
 - **Manage multi-level CA hierarchies** with name constraints, path-length enforcement, and end-to-end RFC 5280 path validation. Root → intermediate → issuing chains, admin-gated CRUD, drain-first retirement. Patterns documented for 4-level boundary CAs, 3-level policy CAs with per-BU `PermittedDNSDomains`, and 2-level internal PKI. See [`docs/reference/intermediate-ca-hierarchy.md`](docs/reference/intermediate-ca-hierarchy.md).
 - **Gate high-stakes issuance** behind two-person-integrity approval. Flag a profile as `RequiresApproval`, the request lands in a queue, a non-requester approves, the scheduler dispatches. Profile-edit changes on approval-tier profiles route through the same gate so the flip-flop bypass is closed. See [`docs/operator/approval-workflow.md`](docs/operator/approval-workflow.md).
 - **Authorize with role-based access control.** Seven default roles (admin, operator, viewer, agent, mcp, cli, auditor) over a 33-permission canonical catalogue with global / per-profile / per-issuer scope. Auditor role is read-only on the audit trail (`audit.read` + `audit.export`, nothing else) so a regulator's key cannot read certificates or mutate config. Day-0 admin via a one-shot `CERTCTL_BOOTSTRAP_TOKEN` endpoint that closes itself the moment any admin lands. Privilege-escalation guard requires `auth.role.assign` to grant or revoke a role. See [`docs/operator/rbac.md`](docs/operator/rbac.md), [`docs/operator/auth-threat-model.md`](docs/operator/auth-threat-model.md), and the v2.0.x → v2.1.0 [migration guide](docs/migration/api-keys-to-rbac.md).
+- **Sign in with OIDC SSO** against any standards-compliant identity provider. Per-IdP setup runbooks for Keycloak, Authentik, Okta, Auth0, Microsoft Entra ID, and Google Workspace. Group-claim → role mapping for automatic provisioning; client_secret encrypted at rest (AES-256-GCM); JWKS auto-refresh on `kid` miss; PKCE-S256 required; RFC 9700 §4.7.1 pre-login UA/IP binding; RFC 9207 `iss` URL-param check on callback. Server mints HMAC-signed session cookies with the `__Host-` prefix (browser-enforced subdomain-takeover defense), CSRF rotation on every privileged write, and idle + absolute expiry. [RFC OIDC Back-Channel Logout 1.0](docs/reference/auth-standards-implemented.md) revokes sessions on IdP-driven logout. Argon2id break-glass admin path for SSO-outage recovery — disabled by default; 404-invisible to scanners when `CERTCTL_BREAKGLASS_ENABLED=false`. See [`docs/operator/oidc-runbooks/index.md`](docs/operator/oidc-runbooks/index.md) for the per-IdP onboarding guides and [`docs/migration/oidc-enable.md`](docs/migration/oidc-enable.md) for enabling SSO on an existing deploy.
 - **Discover** existing certs across your fleet via filesystem scanning on agents, network TLS probing across CIDR ranges, and cloud secret manager imports (AWS Secrets Manager, Azure Key Vault, GCP Secret Manager). Triage workflow for claim / dismiss / investigate.
 - **Revoke** with full RFC 5280 reason codes, DER CRL generation per issuer (scheduler-pre-generated and ETag-cached), and an embedded RFC 6960 OCSP responder with dedicated per-issuer responder certs. Single + bulk revocation. See [`docs/reference/protocols/crl-ocsp.md`](docs/reference/protocols/crl-ocsp.md).
 - **Alert** via Slack, Microsoft Teams, PagerDuty, OpsGenie, email, webhooks. Per-policy multi-channel routing matrix with severity tiers and fault-isolating per-channel dispatch. See [`docs/operator/runbooks/expiry-alerts.md`](docs/operator/runbooks/expiry-alerts.md).
@@ -75,7 +76,7 @@ certctl handles the full certificate lifecycle in one self-hosted control plane:
 
 Go 1.25 control plane with handler → service → repository layering. PostgreSQL 16 backend (35+ tables, idempotent migrations). Pull-only deployment model — the server never initiates outbound connections. Agents poll for work and generate ECDSA P-256 keys locally so private keys never touch the control plane. For network appliances and agentless servers, a proxy agent in the same network zone handles deployment via the target's API (WinRM, iControl REST, SSH/SFTP). See the [Architecture Guide](docs/reference/architecture.md) for full system diagrams.
 
-Security: API-key authentication with SHA-256 hashing + constant-time comparison, then role-based authorization on every gated handler with global / per-profile / per-issuer scope. Auditor split keeps regulator-class actors strictly read-only on the audit trail. Day-0 admin via a one-shot bootstrap token; granting or revoking roles requires the dedicated `auth.role.assign` permission. CORS deny-by-default. Shell injection prevention on all connector scripts. SSRF protection (reserved IP filtering) on the network scanner. Issuer and target credentials encrypted at rest with AES-256-GCM. HTTPS-only control plane with TLS 1.3 pinned and a fail-closed startup gate that refuses to boot if the TLS bundle is unusable. Every API call recorded to an immutable audit trail with actor attribution, body hash, and latency tracking. CI runs race detection, 11 linters, and vulnerability scanning on every commit. See [`docs/operator/security.md`](docs/operator/security.md) for the full posture and [`docs/operator/auth-threat-model.md`](docs/operator/auth-threat-model.md) for what's defended vs deferred.
+Security: three authentication paths — API keys (SHA-256 hashed + constant-time compared), [OIDC SSO](docs/operator/oidc-runbooks/index.md) (Keycloak / Authentik / Okta / Auth0 / Entra ID / Google Workspace), and Argon2id [break-glass admin](docs/operator/security.md) for SSO-outage recovery. Successful OIDC login mints an HMAC-signed server-side session with `__Host-` cookies, CSRF rotation on every privileged write, and [RFC OIDC Back-Channel Logout](docs/reference/auth-standards-implemented.md) for IdP-driven session revoke. Role-based authorization on every gated handler with global / per-profile / per-issuer scope. Auditor split keeps regulator-class actors strictly read-only on the audit trail. Day-0 admin via a one-shot bootstrap token; granting or revoking roles requires the dedicated `auth.role.assign` permission. CORS deny-by-default. Shell injection prevention on all connector scripts. SSRF protection (reserved IP filtering) on the network scanner. Issuer + target + OIDC client_secret credentials encrypted at rest with AES-256-GCM. HTTPS-only control plane with TLS 1.3 pinned and a fail-closed startup gate that refuses to boot if the TLS bundle is unusable. Every API call recorded to an immutable audit trail with actor attribution, body hash, and latency tracking. CI runs race detection, static analysis, and vulnerability scanning on every commit. See [`docs/operator/security.md`](docs/operator/security.md) for the full posture and [`docs/operator/auth-threat-model.md`](docs/operator/auth-threat-model.md) for what's defended vs deferred.
 
 ## Quick Start
 
@@ -151,7 +152,7 @@ govulncheck ./...       # Vulnerability scan
 make docker-up          # Start Docker Compose stack
 ```
 
-CI runs `go vet`, `go test -race`, `golangci-lint`, `govulncheck`, and per-layer coverage thresholds (service 55%, handler 60%, domain 40%, middleware 30%) on every push. Frontend CI runs TypeScript type checking, Vitest tests, and Vite production build.
+CI runs `go vet`, `go test -race`, `golangci-lint`, `govulncheck`, and per-package coverage thresholds (service 70%, handler 75%, crypto 88%, auth packages 85-95%) on every push. The thresholds-as-data file is `.github/coverage-thresholds.yml`; lowering a floor requires corresponding test work, not a config flip. Frontend CI runs TypeScript type checking, Vitest tests, and Vite production build.
 
 For the full contributor guide see [`docs/contributor/`](docs/contributor/) — testing strategy, test environment, CI pipeline, QA prerequisites.