docs: add FIPS-enabled deployment guide

docs/.vitepress/config.ts

@@ -344,6 +344,10 @@ if(n<200&&document.readyState==="loading")requestAnimationFrame(function(){bar(n
             text: "Self-host Plane",
             link: "https://developers.plane.so/self-hosting/overview",
           },
+          {
+            text: "FIPS deployment",
+            link: "/self-hosting/fips-deployment",
+          },
         ],
       },
       {

docs/self-hosting/fips-deployment.md

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+---
+title: FIPS-enabled deployment
+sidebar_label: FIPS deployment
+description: Deploy the FIPS variant of Plane Enterprise on a FIPS-enforcing host, including prerequisites, image list, verification, and scope of coverage.
+---
+
+# FIPS-enabled deployment
+
+Plane Enterprise publishes a FIPS variant of every application image alongside the standard set.
+These images are built on Red Hat UBI 10, apply the system-wide FIPS cryptographic policy, and run
+their cryptography against FIPS-validated modules (Red Hat's OpenSSL FIPS provider for the Python
+and static services; the Go FIPS 140-3 module for the Go services). They are intended for
+deployments that must meet FIPS 140-3 expectations, such as US Federal or GovCloud environments.
+
+> **The single most important prerequisite:** FIPS mode is a property of the **host**, not of the
+> image. A FIPS image on a non-FIPS host starts cleanly and looks identical from the inside while
+> providing none of the guarantees. Read [Host prerequisite](#host-prerequisite) first.
+
+## Images
+
+The FIPS images use the same names as the standard `-commercial` images with a `-fips` suffix, in
+the `makeplane` Docker Hub organization:
+
+| Service       | Image                                   |
+| ------------- | --------------------------------------- |
+| Backend / API | `makeplane/backend-commercial-fips`     |
+| Web           | `makeplane/web-commercial-fips`         |
+| Admin         | `makeplane/admin-commercial-fips`       |
+| Space         | `makeplane/space-commercial-fips`       |
+| Live          | `makeplane/live-commercial-fips`        |
+| Silo          | `makeplane/silo-commercial-fips`        |
+| Monitor       | `makeplane/monitor-commercial-fips`     |
+| Email         | `makeplane/email-commercial-fips`       |
+| Plane AI (Pi) | `makeplane/plane-pi-commercial-fips`    |
+| Proxy         | `makeplane/proxy-commercial-fips`       |
+| Flux          | `makeplane/flux-commercial-fips`        |
+| Node runner   | `makeplane/node-runner-commercial-fips` |
+
+Pin a specific release tag for any accredited deployment rather than tracking `latest` — a known,
+fixed image version is part of the audit trail.
+
+> **Note:** there is no FIPS All-in-One (AIO) image. The AIO image is built on an Alpine base, which
+> has no FIPS-validated cryptography, so a FIPS deployment uses the multi-container Compose stack
+> below, not the AIO image.
+
+## Host prerequisite
+
+The host kernel must be booted in FIPS mode. The container inherits this through
+`/proc/sys/crypto/fips_enabled` and **cannot set it itself**. Verify before deploying:
+
+```bash
+cat /proc/sys/crypto/fips_enabled     # must print 1
+```
+
+To enable FIPS mode on a RHEL-family host (RHEL, Rocky, Alma, Amazon Linux 2023):
+
+```bash
+sudo dnf install -y crypto-policies-scripts
+sudo fips-mode-setup --enable
+sudo reboot
+```
+
+`/boot` must be its own filesystem for this to work — it is on the stock cloud images.
+Alternatively, boot a vendor FIPS image (a RHEL FIPS AMI, Ubuntu Pro FIPS) or use OpenShift with
+FIPS enabled at install time.
+
+As a safeguard, the shipped Compose file sets `PLANE_REQUIRE_FIPS=1`, so the containers **refuse to
+start** if the host is not in FIPS mode. Set it to `0` to downgrade that to a startup warning.
+
+## Deploy
+
+The Compose file and its supporting files live in the plane-ee repository under
+`deployments/cli/commercial/`:
+
+- `docker-compose-fips.yml` — the FIPS stack
+- `variables.env` — environment template
+- `README-FIPS.md` — the authoritative operations reference
+- `verify-fips.sh` — the verification script (see [Verify](#verify))
+
+```bash
+# 1. Confirm the host is in FIPS mode (above).
+# 2. Prepare the environment file.
+cp variables.env .env
+#    Edit at least: DOMAIN_NAME, WEB_URL, SECRET_KEY, MACHINE_SIGNATURE.
+
+# 3. Bring the stack up.
+docker compose -f docker-compose-fips.yml up -d
+```
+
+Each container logs its posture on startup:
+
+```
+plane: FIPS mode ACTIVE (host kernel reports fips_enabled=1)
+```
+
+The Go services (monitor, email, proxy) log a corresponding line, for example
+`Go FIPS 140-3 module ACTIVE`.
+
+## Verify
+
+`verify-fips.sh` asserts the posture across the running stack — the kernel flag inside each
+container, that the validated OpenSSL provider is loaded and active, that a non-approved digest is
+refused, that Node's `crypto.getFips()` returns 1, and that the Go services report the module. It
+exits non-zero if any assertion fails, so it can gate a deployment pipeline:
+
+```bash
+./verify-fips.sh
+```
+
+## Configuration defaults specific to FIPS images
+
+The FIPS images default to a stricter security posture than the standard images. Each default is
+overridable with an environment variable, in either direction. These matter mainly if you are
+moving an existing standard deployment onto the FIPS images; a fresh FIPS install needs none of
+them changed.
+
+| Setting                            | FIPS default | Standard default | Notes                                                                                                 |
+| ---------------------------------- | ------------ | ---------------- | ----------------------------------------------------------------------------------------------------- |
+| `LDAP_TLS_REQUIRE_CERT`            | `demand`     | `never`          | Validates the directory server's TLS certificate. See [LDAP](#ldap-certificate-validation).           |
+| `SAML_REJECT_DEPRECATED_ALGORITHM` | on           | off              | Rejects assertions signed with RSA-SHA1. The IdP must sign with SHA-256.                              |
+| `SECRET_ENCRYPTION_V2`             | on           | off              | Writes at-rest secrets as AES-256-GCM instead of the legacy format. Both formats are always readable. |
+| `USAGE_ID_DIGEST`                  | `sha256`     | `md5`            | Digest for Plane AI usage-ledger keys. A FIPS-mode Postgres refuses `md5()`.                          |
+
+### LDAP certificate validation
+
+On the FIPS images, LDAP TLS certificate validation is on by default. For it to succeed, **both** of
+the following must hold:
+
+1. The directory certificate chains to a trusted CA. For a private or self-signed CA, point
+   `LDAP_TLS_CA_CERTFILE` at your CA bundle (PEM).
+2. The certificate's CN/SAN matches the host in `LDAP_SERVER_URI`. An IP address or short hostname
+   that is not in the certificate's SAN fails hostname verification **even with the correct CA
+   bundle** — use the fully qualified name the certificate was issued for.
+
+Setting `LDAP_TLS_REQUIRE_CERT=never` restores the previous behaviour and logs a warning on every
+connection.
+
+## Scope of coverage
+
+**Covered.** The Plane application images run their cryptography against FIPS-validated modules on a
+FIPS-enforcing host. Non-approved algorithms are refused.
+
+**The bundled data plane is not FIPS.** The `postgres`, `valkey`, `rabbitmq`, `minio`, and
+`iframely` services in the Compose file are upstream Alpine/musl images with no FIPS-validated
+cryptography — there are no FIPS variants of them. They are suitable for evaluation only. For an
+accreditable deployment, replace them with externally managed datastores on FIPS endpoints and
+repoint the connection variables:
+
+| Service       | Replace with                      | Variables                                     |
+| ------------- | --------------------------------- | --------------------------------------------- |
+| `plane-db`    | RDS / Aurora PostgreSQL           | `DATABASE_URL`, `PGHOST`, `POSTGRES_*`        |
+| `plane-redis` | ElastiCache (Valkey/Redis)        | `REDIS_URL`, `REDIS_HOST`, `REDIS_PORT`       |
+| `plane-mq`    | Amazon MQ (RabbitMQ)              | `AMQP_URL`, `RABBITMQ_*`                      |
+| `plane-minio` | S3 on a FIPS endpoint, or similar | `AWS_S3_ENDPOINT_URL`, `AWS_*`, `USE_MINIO=0` |
+
+Then set the corresponding `*_REPLICAS` to `0`, or remove those services, so the bundled ones do
+not start.
+
+**TLS termination.** The bundled proxy (Caddy) is built against a FIPS-validated module, but for an
+accredited topology the recommended pattern is to terminate TLS at a validated endpoint in front of
+the deployment — such as a FIPS-enabled load balancer — and have the proxy serve HTTP internally.
+
+**FIPS validation applies to the cryptographic modules, not to Plane as a product.** FIPS 140-3
+certificates are held by the module vendors (Red Hat and the Go project). This deployment ensures
+Plane's cryptography _uses_ those validated modules on a compliant host; it does not make Plane
+itself a FIPS-certified product.
+
+## Reference
+
+The authoritative operations reference — including every environment variable and the migration
+notes for moving a standard deployment onto FIPS images — is `README-FIPS.md`, shipped alongside
+the Compose file in `deployments/cli/commercial/`.