Add service-context login policy enforcement

Services send service_name and tags in POST /v1/auth/login.
MCIAS evaluates auth:login policy with these as the resource
context after credentials are verified, enabling rules like:
  deny guest/viewer human accounts from env:restricted services
  deny guest accounts from specific named services

- loginRequest: add ServiceName and Tags fields
- handleLogin: evaluate policy after credential+TOTP check;
  policy deny returns 403 (not 401) to distinguish access
  restriction from bad credentials
- Go client: Options.ServiceName/Tags stored on Client,
  sent automatically in every Login() call
- Python client: service_name/tags on __init__, sent in login()
- Rust client: ClientOptions.service_name/tags, LoginRequest
  fields, Client stores and sends them in login()
- openapi.yaml: document service_name/tags request fields
  and 403 response for policy-denied logins
- engineering-standards.md: document service_name/tags in
  [mcias] config section with policy examples

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

.gitignore

@@ -20,7 +20,8 @@ mcias.toml
 *~
 go.work
 go.work.sum
-dist/mcias_*.tar.gz
+# dist/ is purely build output (tarballs); never commit it
+dist/
 man/man1/*.gz
 
 # Client library build artifacts

Dockerfile

@@ -1,12 +1,16 @@
 # Dockerfile — MCIAS multi-stage container image
 #
 # Stage 1 (builder): Compiles all four MCIAS binaries.
-# Stage 2 (runtime): Minimal Debian image containing only the binaries.
+# Stage 2 (runtime): Minimal Alpine image containing only the binaries.
+#
+# modernc.org/sqlite is a pure-Go, CGo-free SQLite port. CGO_ENABLED=0
+# produces fully static binaries with no C library dependencies, which
+# deploy cleanly onto a minimal Alpine runtime image.
 #
 # The final image:
 #   - Runs as non-root uid 10001 (mcias)
 #   - Exposes port 8443 (REST/TLS) and 9443 (gRPC/TLS)
-#   - Declares VOLUME /data for the SQLite database
+#   - Declares VOLUME /srv/mcias for config, TLS, and database
 #   - Does NOT contain the Go toolchain, source code, or build cache
 #
 # Build:
@@ -15,8 +19,7 @@
 # Run:
 #   docker run -d \
 #     --name mcias \
-#     -v /path/to/config:/etc/mcias:ro \
-#     -v mcias-data:/data \
+#     -v /srv/mcias:/srv/mcias \
 #     -e MCIAS_MASTER_PASSPHRASE=your-passphrase \
 #     -p 8443:8443 \
 #     -p 9443:9443 \
@@ -25,7 +28,7 @@
 # ---------------------------------------------------------------------------
 # Stage 1 — builder
 # ---------------------------------------------------------------------------
-FROM golang:1.26-bookworm AS builder
+FROM golang:1.26-alpine AS builder
 
 WORKDIR /build
 
@@ -36,35 +39,29 @@ RUN go mod download
 # Copy source.
 COPY . .
 
-# CGO_ENABLED=1 is required by modernc.org/sqlite (pure-Go CGo-free SQLite).
+# CGO_ENABLED=0: modernc.org/sqlite is pure Go; no C toolchain required.
 # -trimpath removes local file system paths from the binary.
 # -ldflags="-s -w" strips the DWARF debug info and symbol table to reduce
 # image size.
-RUN CGO_ENABLED=1 go build -trimpath -ldflags="-s -w" -o /out/mciassrv    ./cmd/mciassrv    && \
-    CGO_ENABLED=1 go build -trimpath -ldflags="-s -w" -o /out/mciasctl    ./cmd/mciasctl    && \
-    CGO_ENABLED=1 go build -trimpath -ldflags="-s -w" -o /out/mciasdb     ./cmd/mciasdb     && \
-    CGO_ENABLED=1 go build -trimpath -ldflags="-s -w" -o /out/mciasgrpcctl ./cmd/mciasgrpcctl
+RUN CGO_ENABLED=0 go build -trimpath -ldflags="-s -w" -o /out/mciassrv    ./cmd/mciassrv    && \
+    CGO_ENABLED=0 go build -trimpath -ldflags="-s -w" -o /out/mciasctl    ./cmd/mciasctl    && \
+    CGO_ENABLED=0 go build -trimpath -ldflags="-s -w" -o /out/mciasdb     ./cmd/mciasdb     && \
+    CGO_ENABLED=0 go build -trimpath -ldflags="-s -w" -o /out/mciasgrpcctl ./cmd/mciasgrpcctl
 
 # ---------------------------------------------------------------------------
 # Stage 2 — runtime
 # ---------------------------------------------------------------------------
-FROM debian:bookworm-slim
+FROM alpine:3.21
 
-# Install runtime dependencies.
 # ca-certificates: required to validate external TLS certificates.
-# libc6:           required by CGo-compiled binaries (sqlite).
-RUN apt-get update && \
-    apt-get install -y --no-install-recommends \
-        ca-certificates \
-        libc6 && \
-    rm -rf /var/lib/apt/lists/*
+RUN apk add --no-cache ca-certificates
 
 # Create a non-root user for the service.
 # uid/gid 10001 is chosen to be well above the range typically assigned to
 # system users (1–999) and human users (1000+), reducing the chance of
 # collision with existing uids on the host when using host networking.
-RUN groupadd --gid 10001 mcias && \
-    useradd --uid 10001 --gid 10001 --no-create-home --shell /usr/sbin/nologin mcias
+RUN addgroup -g 10001 mcias && \
+    adduser -u 10001 -G mcias -H -s /sbin/nologin -D mcias
 
 # Copy compiled binaries from the builder stage.
 COPY --from=builder /out/mciassrv     /usr/local/bin/mciassrv
@@ -72,17 +69,15 @@ COPY --from=builder /out/mciasctl     /usr/local/bin/mciasctl
 COPY --from=builder /out/mciasdb      /usr/local/bin/mciasdb
 COPY --from=builder /out/mciasgrpcctl /usr/local/bin/mciasgrpcctl
 
-# Create the config and data directories.
-# /etc/mcias is mounted read-only by the operator with the config file,
-# TLS cert, and TLS key.
-# /data is the SQLite database mount point.
-RUN mkdir -p /etc/mcias /data && \
-    chown mcias:mcias /data && \
-    chmod 0750 /data
+# Create the data directory.
+# /srv/mcias is mounted from the host with config, TLS certs, and database.
+RUN mkdir -p /srv/mcias/certs /srv/mcias/backups && \
+    chown -R mcias:mcias /srv/mcias && \
+    chmod 0750 /srv/mcias
 
-# Declare /data as a volume so the operator must explicitly mount it.
-# The SQLite database must persist across container restarts.
-VOLUME /data
+# Declare /srv/mcias as a volume so the operator must explicitly mount it.
+# Contains the config file, TLS cert/key, and SQLite database.
+VOLUME /srv/mcias
 
 # REST/TLS port and gRPC/TLS port. These are documentation only; the actual
 # ports are set in the config file. Override by mounting a different config.
@@ -93,7 +88,8 @@ EXPOSE 9443
 USER mcias
 
 # Default entry point and config path.
-# The operator mounts /etc/mcias/mcias.conf from the host or a volume.
-# See dist/mcias.conf.docker.example for a suitable template.
+# The operator mounts /srv/mcias from the host containing mcias.toml,
+# TLS cert/key, and the SQLite database.
+# See deploy/examples/mcias.conf.docker.example for a suitable template.
 ENTRYPOINT ["mciassrv"]
-CMD ["-config", "/etc/mcias/mcias.conf"]
+CMD ["-config", "/srv/mcias/mcias.toml"]

Makefile

@@ -3,10 +3,14 @@
 # Usage:
 #   make build     — compile all binaries to bin/
 #   make test      — run tests with race detector
+#   make vet       — run go vet
 #   make lint      — run golangci-lint
+#   make all       — vet → lint → test → build (CI pipeline)
 #   make generate  — regenerate protobuf stubs (requires protoc)
+#   make proto-lint — lint proto files with buf
 #   make man       — build compressed man pages
-#   make install   — run dist/install.sh (requires root)
+#   make install   — run deploy/scripts/install.sh (requires root)
+#   make devserver — build and run mciassrv against run/ config
 #   make clean     — remove bin/ and generated artifacts
 #   make dist      — build release tarballs for linux/amd64 and linux/arm64
 #   make docker    — build Docker image tagged mcias:$(VERSION) and mcias:latest
@@ -27,20 +31,25 @@ MAN_PAGES  := $(MAN_DIR)/mciassrv.1 $(MAN_DIR)/mciasctl.1 \
 VERSION    := $(shell git describe --tags --always 2>/dev/null || echo dev)
 
 # Build flags: trim paths from binaries and strip DWARF/symbol table.
-# CGO_ENABLED=1 is required for modernc.org/sqlite.
+# modernc.org/sqlite is pure-Go and does not require CGo; CGO_ENABLED=0
+# produces statically linked binaries that deploy cleanly to Alpine containers.
 GO         := go
 GOFLAGS    := -trimpath
 LDFLAGS    := -s -w -X main.version=$(VERSION)
-CGO        := CGO_ENABLED=1
+CGO        := CGO_ENABLED=0
+
+# The race detector requires CGo on some platforms, so tests continue to use
+# CGO_ENABLED=1 while production builds are CGO_ENABLED=0.
+CGO_TEST   := CGO_ENABLED=1
 
 # Platforms for cross-compiled dist tarballs.
 DIST_PLATFORMS := linux/amd64 linux/arm64
 
 # ---------------------------------------------------------------------------
-# Default target
+# Default target — CI pipeline: vet → lint → test → build
 # ---------------------------------------------------------------------------
 .PHONY: all
-all: build
+all: vet lint test build
 
 # ---------------------------------------------------------------------------
 # build — compile all binaries to bin/
@@ -59,7 +68,14 @@ build:
 # ---------------------------------------------------------------------------
 .PHONY: test
 test:
-	$(CGO) $(GO) test -race ./...
+	$(CGO_TEST) $(GO) test -race ./...
+
+# ---------------------------------------------------------------------------
+# vet — static analysis via go vet
+# ---------------------------------------------------------------------------
+.PHONY: vet
+vet:
+	$(GO) vet ./...
 
 # ---------------------------------------------------------------------------
 # lint — run golangci-lint
@@ -68,6 +84,15 @@ test:
 lint:
 	golangci-lint run ./...
 
+# ---------------------------------------------------------------------------
+# proto-lint — lint and check for breaking changes in proto definitions
+# Requires: buf (https://buf.build/docs/installation)
+# ---------------------------------------------------------------------------
+.PHONY: proto-lint
+proto-lint:
+	buf lint
+	buf breaking --against '.git#branch=master,subdir=proto'
+
 # ---------------------------------------------------------------------------
 # generate — regenerate protobuf stubs from proto/ definitions
 # Requires: protoc, protoc-gen-go, protoc-gen-go-grpc
@@ -76,6 +101,13 @@ lint:
 generate:
 	$(GO) generate ./...
 
+# ---------------------------------------------------------------------------
+# devserver — build and run mciassrv against the local run/ config
+# ---------------------------------------------------------------------------
+.PHONY: devserver
+devserver: build
+	$(BIN_DIR)/mciassrv -config run/mcias.conf
+
 # ---------------------------------------------------------------------------
 # man — build compressed man pages
 # ---------------------------------------------------------------------------
@@ -90,7 +122,7 @@ man: $(patsubst %.1,%.1.gz,$(MAN_PAGES))
 # ---------------------------------------------------------------------------
 .PHONY: install
 install: build
-	sh dist/install.sh
+	sh deploy/scripts/install.sh
 
 # ---------------------------------------------------------------------------
 # clean — remove build artifacts
@@ -98,6 +130,7 @@ install: build
 .PHONY: clean
 clean:
 	rm -rf $(BIN_DIR)
+	rm -rf dist/
 	rm -f $(patsubst %.1,%.1.gz,$(MAN_PAGES))
 	-docker rmi mcias:$(VERSION) mcias:latest 2>/dev/null || true
 
@@ -106,7 +139,7 @@ clean:
 #
 # Output files: dist/mcias_<version>_<os>_<arch>.tar.gz
 # Each tarball contains: mciassrv, mciasctl, mciasdb, mciasgrpcctl,
-#   man pages, and dist/ files.
+#   man pages, and deploy/ files.
 # ---------------------------------------------------------------------------
 .PHONY: dist
 dist: man
@@ -117,14 +150,12 @@ dist: man
 		echo "  DIST      $$platform -> $$outdir.tar.gz"; \
 		mkdir -p $$outdir/bin; \
 		for bin in $(BINARIES); do \
-			CGO_ENABLED=1 GOOS=$$os GOARCH=$$arch $(GO) build \
+			CGO_ENABLED=0 GOOS=$$os GOARCH=$$arch $(GO) build \
 				$(GOFLAGS) -ldflags "$(LDFLAGS)" \
 				-o $$outdir/bin/$$bin ./cmd/$$bin; \
 		done; \
 		cp -r man $$outdir/; \
-		cp dist/mcias.conf.example dist/mcias-dev.conf.example \
-		   dist/mcias.env.example  dist/mcias.service \
-		   dist/install.sh $$outdir/; \
+		cp -r deploy $$outdir/; \
 		tar -czf $$outdir.tar.gz -C dist mcias_$$(echo $(VERSION) | tr -d 'v')_$${os}_$${arch}; \
 		rm -rf $$outdir; \
 	done
@@ -134,7 +165,7 @@ dist: man
 # ---------------------------------------------------------------------------
 .PHONY: docker
 docker:
-	docker build -t mcias:$(VERSION) -t mcias:latest .
+	docker build --force-rm -t mcias:$(VERSION) -t mcias:latest .
 
 # ---------------------------------------------------------------------------
 # docker-clean — remove local mcias Docker images
@@ -154,13 +185,17 @@ install-local: build
 .PHONY: help
 help:
 	@echo "Available targets:"
-	@echo "  build     Compile all binaries to bin/"
-	@echo "  test      Run tests with race detector"
-	@echo "  lint      Run golangci-lint"
-	@echo "  generate  Regenerate protobuf stubs"
-	@echo "  man       Build compressed man pages"
-	@echo "  install   Install to /usr/local/bin (requires root)"
-	@echo "  clean     Remove build artifacts"
-	@echo "  dist      Build release tarballs for Linux amd64/arm64"
-	@echo "  docker       Build Docker image mcias:$(VERSION) and mcias:latest"
+	@echo "  all        vet → lint → test → build (CI pipeline)"
+	@echo "  build      Compile all binaries to bin/"
+	@echo "  test       Run tests with race detector"
+	@echo "  vet        Run go vet"
+	@echo "  lint       Run golangci-lint"
+	@echo "  proto-lint Lint proto files with buf"
+	@echo "  generate   Regenerate protobuf stubs"
+	@echo "  devserver  Build and run mciassrv against run/ config"
+	@echo "  man        Build compressed man pages"
+	@echo "  install    Install to /usr/local/bin (requires root)"
+	@echo "  clean      Remove build artifacts"
+	@echo "  dist       Build release tarballs for Linux amd64/arm64"
+	@echo "  docker     Build Docker image mcias:$(VERSION) and mcias:latest"
 	@echo "  docker-clean Remove local mcias Docker images"

RUNBOOK.md

@@ -322,6 +322,83 @@ mciasdb $CONF audit query --json
 
 ---
 
+## WebAuthn / Passkey Configuration
+
+WebAuthn enables passwordless passkey login and hardware security key 2FA.
+It is **disabled by default** — to enable it, add a `[webauthn]` section to
+`mcias.toml` with the relying party ID and origin.
+
+### Enable WebAuthn
+
+Add to `/srv/mcias/mcias.toml`:
+
+```toml
+[webauthn]
+rp_id        = "auth.example.com"
+rp_origin    = "https://auth.example.com"
+display_name = "MCIAS"
+```
+
+- **`rp_id`** — The domain name (no scheme or port). Must match the domain
+  users see in their browser address bar.
+- **`rp_origin`** — The full HTTPS origin. Include the port if non-standard
+  (e.g., `https://localhost:8443` for development).
+- **`display_name`** — Shown to users during browser passkey prompts. Defaults
+  to "MCIAS" if omitted.
+
+Restart the server after changing the config:
+
+```sh
+systemctl restart mcias
+```
+
+Once enabled, the **Passkeys** section appears on the user's Profile page
+(self-service enrollment) and on the admin Account Detail page (credential
+management).
+
+### Passkey enrollment
+
+Passkey enrollment is self-service only. Users add passkeys from their
+**Profile → Passkeys** section. Admins can view and remove passkeys from
+the Account Detail page but cannot enroll on behalf of users (passkey
+registration requires the authenticator device to be present).
+
+### Disable WebAuthn
+
+Remove or comment out the `[webauthn]` section and restart. Existing
+credentials remain in the database but are unused. Passkey UI sections
+will be hidden.
+
+### Remove all passkeys for an account (break-glass)
+
+```sh
+mciasdb --config /srv/mcias/mcias.toml account reset-webauthn --id <UUID>
+```
+
+---
+
+## TOTP Two-Factor Authentication
+
+TOTP enrollment is self-service via the **Profile → Two-Factor Authentication**
+section. Users enter their current password to begin enrollment, scan the QR
+code with an authenticator app, and confirm with a 6-digit code.
+
+### Admin: Remove TOTP for an account
+
+From the web UI: navigate to the account's detail page and click **Remove**
+next to the TOTP status.
+
+From the CLI:
+
+```sh
+mciasdb --config /srv/mcias/mcias.toml account reset-totp --id <UUID>
+```
+
+This clears the TOTP secret and disables the 2FA requirement. The user can
+re-enroll from their Profile page.
+
+---
+
 ## Master Key Rotation
 
 > This operation is not yet automated. Until a rotation command is

buf.yaml

@@ -0,0 +1,14 @@
+version: v2
+modules:
+  - path: proto
+lint:
+  use:
+    - STANDARD
+  except:
+    # PACKAGE_VERSION_SUFFIX requires package names to end in a version (e.g.
+    # mcias.v1). The current protos use mcias.v1 already so this is fine, but
+    # keeping the exception documents the intent explicitly.
+    - PACKAGE_VERSION_SUFFIX
+breaking:
+  use:
+    - FILE

clients/go/client.go

@@ -185,16 +185,28 @@ type Options struct {
 	CACertPath string
 	// Token is an optional pre-existing bearer token.
 	Token string
+	// ServiceName is the name of this service as registered in MCIAS. It is
+	// sent with every Login call so MCIAS can evaluate service-context policy
+	// rules (e.g. deny guest users from logging into this service).
+	// Populate from [mcias] service_name in the service's config file.
+	ServiceName string
+	// Tags are the service-level tags sent with every Login call. MCIAS
+	// evaluates auth:login policy against these tags, enabling rules such as
+	// "deny guest accounts from services tagged env:restricted".
+	// Populate from [mcias] tags in the service's config file.
+	Tags []string
 }
 
 // Client is a thread-safe MCIAS REST API client.
 // Security: the bearer token is guarded by a sync.RWMutex; it is never
 // written to logs or included in error messages in this library.
 type Client struct {
-	baseURL string
-	http    *http.Client
-	mu      sync.RWMutex
-	token   string
+	baseURL     string
+	http        *http.Client
+	serviceName string
+	tags        []string
+	mu          sync.RWMutex
+	token       string
 }
 
 // ---------------------------------------------------------------------------
@@ -224,9 +236,11 @@ func New(serverURL string, opts Options) (*Client, error) {
 	}
 	transport := &http.Transport{TLSClientConfig: tlsCfg}
 	c := &Client{
-		baseURL: serverURL,
-		http:    &http.Client{Transport: transport},
-		token:   opts.Token,
+		baseURL:     serverURL,
+		http:        &http.Client{Transport: transport},
+		token:       opts.Token,
+		serviceName: opts.ServiceName,
+		tags:        opts.Tags,
 	}
 	return c, nil
 }
@@ -343,16 +357,28 @@ func (c *Client) GetPublicKey() (*PublicKey, error) {
 // Login authenticates with username and password. On success the token is
 // stored in the Client and returned along with the expiry timestamp.
 // totpCode may be empty for accounts without TOTP.
+//
+// The client's ServiceName and Tags (from Options) are included in the
+// request so MCIAS can evaluate service-context policy rules.
 func (c *Client) Login(username, password, totpCode string) (token, expiresAt string, err error) {
-	req := map[string]string{"username": username, "password": password}
+	body := map[string]interface{}{
+		"username": username,
+		"password": password,
+	}
 	if totpCode != "" {
-		req["totp_code"] = totpCode
+		body["totp_code"] = totpCode
+	}
+	if c.serviceName != "" {
+		body["service_name"] = c.serviceName
+	}
+	if len(c.tags) > 0 {
+		body["tags"] = c.tags
 	}
 	var resp struct {
 		Token     string `json:"token"`
 		ExpiresAt string `json:"expires_at"`
 	}
-	if err := c.do(http.MethodPost, "/v1/auth/login", req, &resp); err != nil {
+	if err := c.do(http.MethodPost, "/v1/auth/login", body, &resp); err != nil {
 		return "", "", err
 	}
 	c.setToken(resp.Token)

clients/python/mcias_client/_client.py

@@ -20,9 +20,13 @@ class Client:
         ca_cert_path: str | None = None,
         token: str | None = None,
         timeout: float = 30.0,
+        service_name: str | None = None,
+        tags: list[str] | None = None,
     ) -> None:
         self._base_url = server_url.rstrip("/")
         self.token = token
+        self._service_name = service_name
+        self._tags = tags or []
         ssl_context: ssl.SSLContext | bool
         if ca_cert_path is not None:
             ssl_context = ssl.create_default_context(cafile=ca_cert_path)
@@ -115,6 +119,9 @@ class Client:
     ) -> tuple[str, str]:
         """POST /v1/auth/login — authenticate and obtain a JWT.
         Returns (token, expires_at). Stores the token on self.token.
+
+        The client's service_name and tags are included so MCIAS can evaluate
+        service-context policy rules (e.g. deny guests from restricted services).
         """
         payload: dict[str, Any] = {
             "username": username,
@@ -122,6 +129,10 @@ class Client:
         }
         if totp_code is not None:
             payload["totp_code"] = totp_code
+        if self._service_name is not None:
+            payload["service_name"] = self._service_name
+        if self._tags:
+            payload["tags"] = self._tags
         data = self._request("POST", "/v1/auth/login", json=payload)
         assert data is not None
         token = str(data["token"])

clients/rust/src/lib.rs

@@ -227,6 +227,10 @@ struct LoginRequest<'a> {
     password: &'a str,
     #[serde(skip_serializing_if = "Option::is_none")]
     totp_code: Option<&'a str>,
+    #[serde(skip_serializing_if = "Option::is_none")]
+    service_name: Option<&'a str>,
+    #[serde(skip_serializing_if = "Vec::is_empty")]
+    tags: Vec<String>,
 }
 
 #[derive(Deserialize)]
@@ -268,6 +272,16 @@ pub struct ClientOptions {
 
     /// Optional pre-existing bearer token.
     pub token: Option<String>,
+
+    /// This service's name as registered in MCIAS. Sent with every login
+    /// request so MCIAS can evaluate service-context policy rules.
+    /// Populate from `[mcias] service_name` in the service config.
+    pub service_name: Option<String>,
+
+    /// Service-level tags sent with every login request. MCIAS evaluates
+    /// `auth:login` policy against these tags.
+    /// Populate from `[mcias] tags` in the service config.
+    pub tags: Vec<String>,
 }
 
 // ---- Client ----
@@ -280,6 +294,8 @@ pub struct ClientOptions {
 pub struct Client {
     base_url: String,
     http: reqwest::Client,
+    service_name: Option<String>,
+    tags: Vec<String>,
     /// Bearer token storage. `Arc<RwLock<...>>` so clones share the token.
     /// Security: the token is never logged or included in error messages.
     token: Arc<RwLock<Option<String>>>,
@@ -306,6 +322,8 @@ impl Client {
         Ok(Self {
             base_url: base_url.trim_end_matches('/').to_owned(),
             http,
+            service_name: opts.service_name,
+            tags: opts.tags,
             token: Arc::new(RwLock::new(opts.token)),
         })
     }
@@ -336,6 +354,8 @@ impl Client {
             username,
             password,
             totp_code,
+            service_name: self.service_name.as_deref(),
+            tags: self.tags.clone(),
         };
         let resp: TokenResponse = self.post("/v1/auth/login", &body).await?;
         *self.token.write().await = Some(resp.token.clone());

cmd/mciasdb/main.go

@@ -40,7 +40,7 @@
 //	pgcreds get --id UUID
 //	pgcreds set --id UUID --host H --port P --db D --user U
 //
-//	rekey
+//	snapshot [--retain-days N]
 package main
 
 import (
@@ -68,6 +68,14 @@ func main() {
 	command := args[0]
 	subArgs := args[1:]
 
+	// snapshot loads only the config (no master key needed — VACUUM INTO does
+	// not access encrypted columns) and must be handled before openDB, which
+	// requires the master key passphrase env var.
+	if command == "snapshot" {
+		runSnapshot(*configPath, subArgs)
+		return
+	}
+
 	// schema subcommands manage migrations themselves and must not trigger
 	// auto-migration on open (a dirty database would prevent the tool from
 	// opening at all, blocking recovery operations like "schema force").
@@ -273,6 +281,11 @@ Commands:
   rekey                  Re-encrypt all secrets under a new master passphrase
                          (prompts interactively; requires server to be stopped)
 
+  snapshot               Write a timestamped VACUUM INTO backup to
+                         <db-dir>/backups/; prune backups older than
+                         --retain-days days (default 30, 0 = keep all).
+                         Does not require the master key passphrase.
+
 NOTE: mciasdb bypasses the mciassrv API and operates directly on the SQLite
 file. Use it only when the server is unavailable or for break-glass recovery.
 All write operations are recorded in the audit log.

cmd/mciasdb/snapshot.go

@@ -0,0 +1,44 @@
+package main
+
+import (
+	"flag"
+	"fmt"
+	"path/filepath"
+
+	"git.wntrmute.dev/kyle/mcias/internal/config"
+	"git.wntrmute.dev/kyle/mcias/internal/db"
+)
+
+// runSnapshot handles the "snapshot" command.
+//
+// It opens the database read-only (no master key derivation needed — VACUUM
+// INTO does not access encrypted columns) and writes a timestamped backup to
+// /srv/mcias/backups/ (or the directory adjacent to the configured DB path).
+// Backups older than --retain-days are pruned.
+func runSnapshot(configPath string, args []string) {
+	fs := flag.NewFlagSet("snapshot", flag.ExitOnError)
+	retainDays := fs.Int("retain-days", 30, "prune backups older than this many days (0 = keep all)")
+	if err := fs.Parse(args); err != nil {
+		fatalf("snapshot: %v", err)
+	}
+
+	cfg, err := config.Load(configPath)
+	if err != nil {
+		fatalf("snapshot: load config: %v", err)
+	}
+
+	database, err := db.Open(cfg.Database.Path)
+	if err != nil {
+		fatalf("snapshot: open database: %v", err)
+	}
+	defer func() { _ = database.Close() }()
+
+	// Place backups in a "backups" directory adjacent to the database file.
+	backupDir := filepath.Join(filepath.Dir(cfg.Database.Path), "backups")
+
+	dest, err := database.SnapshotDir(backupDir, *retainDays)
+	if err != nil {
+		fatalf("snapshot: %v", err)
+	}
+	fmt.Printf("snapshot written: %s\n", dest)
+}

deploy/examples/mcias-dev.conf.example

@@ -41,3 +41,10 @@ threads = 4
 
 [master_key]
 passphrase_env = "MCIAS_MASTER_PASSPHRASE"
+
+# WebAuthn — passkey authentication for local development.
+# rp_origin includes the non-standard port since we're not behind a proxy.
+[webauthn]
+rp_id        = "localhost"
+rp_origin    = "https://localhost:8443"
+display_name = "MCIAS (dev)"

deploy/examples/mcias.conf.docker.example

@@ -48,3 +48,14 @@ threads = 4
 # Set it with: docker run -e MCIAS_MASTER_PASSPHRASE=your-passphrase ...
 # or with a Docker secret / Kubernetes secret.
 passphrase_env = "MCIAS_MASTER_PASSPHRASE"
+
+# ---------------------------------------------------------------------------
+# [webauthn] — FIDO2/WebAuthn passkey authentication (OPTIONAL)
+# ---------------------------------------------------------------------------
+# Uncomment to enable passwordless passkey login. Set rp_id to your domain
+# and rp_origin to the full HTTPS origin users access in their browser.
+#
+# [webauthn]
+# rp_id        = "auth.example.com"
+# rp_origin    = "https://auth.example.com"
+# display_name = "MCIAS"

deploy/examples/mcias.conf.example

@@ -123,3 +123,24 @@ passphrase_env = "MCIAS_MASTER_PASSPHRASE"
 #
 # Uncomment and comment out passphrase_env to switch modes.
 # keyfile = "/srv/mcias/master.key"
+
+# ---------------------------------------------------------------------------
+# [webauthn] — FIDO2/WebAuthn passkey authentication (OPTIONAL)
+# ---------------------------------------------------------------------------
+# Enables passwordless passkey login and hardware security key 2FA.
+# If this section is omitted or rp_id/rp_origin are empty, WebAuthn is
+# disabled and passkey options will not appear in the UI.
+#
+# [webauthn]
+#
+# REQUIRED (if enabling). The Relying Party ID — typically the domain name
+# (without port or scheme). Must match the domain users see in their browser.
+# rp_id = "auth.example.com"
+#
+# REQUIRED (if enabling). The Relying Party Origin — the full origin URL
+# including scheme. Must be HTTPS. Include the port if non-standard (not 443).
+# rp_origin = "https://auth.example.com"
+#
+# OPTIONAL. Display name shown to users during passkey registration prompts.
+# Default: "MCIAS".
+# display_name = "MCIAS"

deploy/scripts/install.sh

@@ -1,13 +1,13 @@
 #!/bin/sh
 # install.sh — MCIAS first-time and upgrade installer
 #
-# Usage: sh dist/install.sh
+# Usage: sh deploy/scripts/install.sh
 #
 # This script must be run as root. It:
 #   1. Creates the mcias system user and group (idempotent).
 #   2. Copies binaries to /usr/local/bin/.
 #   3. Creates /srv/mcias/ with correct permissions.
-#   4. Installs the systemd service unit.
+#   4. Installs the systemd service and backup units.
 #   5. Prints post-install instructions.
 #
 # The script does NOT start or enable the service automatically. Review the
@@ -31,7 +31,8 @@ SYSTEMD_DIR="/etc/systemd/system"
 SERVICE_USER="mcias"
 SERVICE_GROUP="mcias"
 SCRIPT_DIR="$(cd "$(dirname "$0")" && pwd)"
-REPO_ROOT="$(dirname "$SCRIPT_DIR")"
+DEPLOY_DIR="$(dirname "$SCRIPT_DIR")"
+REPO_ROOT="$(dirname "$DEPLOY_DIR")"
 
 # ---------------------------------------------------------------------------
 # Helpers
@@ -100,11 +101,7 @@ fi
 # Step 2: Install binaries.
 info "Installing binaries to $BIN_DIR"
 for bin in mciassrv mciasctl mciasdb mciasgrpcctl; do
-    src="$REPO_ROOT/$bin"
-    if [ ! -f "$src" ]; then
-        # Try bin/ subdirectory (Makefile build output).
-        src="$REPO_ROOT/bin/$bin"
-    fi
+    src="$REPO_ROOT/bin/$bin"
     if [ ! -f "$src" ]; then
         warn "Binary not found: $bin — skipping. Run 'make build' first."
         continue
@@ -113,30 +110,40 @@ for bin in mciassrv mciasctl mciasdb mciasgrpcctl; do
     install -m 0755 -o root -g root "$src" "$BIN_DIR/$bin"
 done
 
-# Step 3: Create service directory.
+# Step 3: Create service directory structure.
 info "Creating $SRV_DIR"
 install -d -m 0750 -o "$SERVICE_USER" -g "$SERVICE_GROUP" "$SRV_DIR"
+install -d -m 0750 -o "$SERVICE_USER" -g "$SERVICE_GROUP" "$SRV_DIR/certs"
+install -d -m 0750 -o "$SERVICE_USER" -g "$SERVICE_GROUP" "$SRV_DIR/backups"
 
 # Install example config files; never overwrite existing configs.
 for f in mcias.conf.example mcias.env.example; do
-    src="$SCRIPT_DIR/$f"
+    src="$DEPLOY_DIR/examples/$f"
     dst="$SRV_DIR/$f"
     if [ -f "$src" ]; then
         install -m 0640 -o "$SERVICE_USER" -g "$SERVICE_GROUP" "$src" "$dst" 2>/dev/null || true
     fi
 done
 
-# Step 5: Install systemd service unit.
+# Step 4: Install systemd units.
 if [ -d "$SYSTEMD_DIR" ]; then
-    info "Installing systemd service unit to $SYSTEMD_DIR"
-    install -m 0644 -o root -g root "$SCRIPT_DIR/mcias.service" "$SYSTEMD_DIR/mcias.service"
+    info "Installing systemd units to $SYSTEMD_DIR"
+    for unit in mcias.service mcias-backup.service mcias-backup.timer; do
+        src="$DEPLOY_DIR/systemd/$unit"
+        if [ -f "$src" ]; then
+            install -m 0644 -o root -g root "$src" "$SYSTEMD_DIR/$unit"
+            info "  Installed $unit"
+        fi
+    done
     info "Reloading systemd daemon"
     systemctl daemon-reload 2>/dev/null || warn "systemctl not available; reload manually."
+    info "Enabling backup timer"
+    systemctl enable mcias-backup.timer 2>/dev/null || warn "Could not enable timer; enable manually with: systemctl enable mcias-backup.timer"
 else
     warn "systemd not found at $SYSTEMD_DIR; skipping service unit installation."
 fi
 
-# Step 6: Install man pages.
+# Step 5: Install man pages.
 if [ -d "$REPO_ROOT/man/man1" ]; then
     install -d -m 0755 -o root -g root "$MAN_DIR"
     info "Installing man pages to $MAN_DIR"
@@ -170,12 +177,12 @@ Next steps:
 
    # Self-signed (development / personal use):
    openssl req -x509 -newkey ed25519 -days 3650 \\
-     -keyout /srv/mcias/server.key \\
-     -out    /srv/mcias/server.crt \\
+     -keyout /srv/mcias/certs/server.key \\
+     -out    /srv/mcias/certs/server.crt \\
      -subj   "/CN=auth.example.com" \\
      -nodes
-   chmod 0640 /srv/mcias/server.key
-   chown mcias:mcias /srv/mcias/server.key /srv/mcias/server.crt
+   chmod 0640 /srv/mcias/certs/server.key
+   chown mcias:mcias /srv/mcias/certs/server.key /srv/mcias/certs/server.crt
 
 2. Copy and edit the configuration file:
 
@@ -200,6 +207,9 @@ Next steps:
    systemctl start mcias
    systemctl status mcias
 
+   The backup timer was enabled automatically. Verify with:
+   systemctl status mcias-backup.timer
+
 5. Create the first admin account using mciasdb (while the server is
    running, or before first start):
 

deploy/systemd/mcias-backup.service

@@ -0,0 +1,32 @@
+[Unit]
+Description=MCIAS Database Backup
+Documentation=man:mciasdb(1)
+After=mcias.service
+# Backup runs against the live database using VACUUM INTO, which is safe
+# while mciassrv is running (WAL mode allows concurrent readers).
+
+[Service]
+Type=oneshot
+User=mcias
+Group=mcias
+
+EnvironmentFile=/srv/mcias/env
+
+ExecStart=/usr/local/bin/mciasdb -config /srv/mcias/mcias.toml snapshot
+
+# Filesystem restrictions (read-write to /srv/mcias for the backup output).
+ProtectSystem=strict
+ProtectHome=true
+PrivateTmp=true
+ReadWritePaths=/srv/mcias
+NoNewPrivileges=true
+PrivateDevices=true
+CapabilityBoundingSet=
+RestrictSUIDSGID=true
+RestrictNamespaces=true
+RestrictRealtime=true
+LockPersonality=true
+MemoryDenyWriteExecute=true
+ProtectKernelTunables=true
+ProtectKernelModules=true
+ProtectControlGroups=true

deploy/systemd/mcias-backup.timer

@@ -0,0 +1,15 @@
+[Unit]
+Description=Daily MCIAS Database Backup
+Documentation=man:mciasdb(1)
+
+[Timer]
+# Run daily at 02:00 UTC with up to 5-minute random jitter to avoid
+# thundering-herd on systems with many services.
+OnCalendar=*-*-* 02:00:00 UTC
+RandomizedDelaySec=5min
+# Run immediately on boot if the last scheduled run was missed
+# (e.g. host was offline at 02:00).
+Persistent=true
+
+[Install]
+WantedBy=timers.target

deploy/systemd/mcias.service

@@ -12,7 +12,7 @@ Group=mcias
 
 # Configuration and secrets.
 # /srv/mcias/env must contain MCIAS_MASTER_PASSPHRASE=<passphrase>
-# See dist/mcias.env.example for the template.
+# See deploy/examples/mcias.env.example for the template.
 EnvironmentFile=/srv/mcias/env
 
 ExecStart=/usr/local/bin/mciassrv -config /srv/mcias/mcias.toml
@@ -42,6 +42,7 @@ PrivateDevices=true
 ProtectKernelTunables=true
 ProtectKernelModules=true
 ProtectControlGroups=true
+RestrictSUIDSGID=true
 RestrictNamespaces=true
 RestrictRealtime=true
 LockPersonality=true

internal/db/snapshot.go

@@ -0,0 +1,68 @@
+package db
+
+import (
+	"fmt"
+	"os"
+	"path/filepath"
+	"strings"
+	"time"
+)
+
+// Snapshot creates a consistent backup of the database at destPath using
+// SQLite's VACUUM INTO statement.  VACUUM INTO acquires a read lock for the
+// duration of the copy, which is safe while the server is running in WAL mode.
+// The destination file is created by SQLite; the caller must ensure the parent
+// directory exists.
+func (db *DB) Snapshot(destPath string) error {
+	// VACUUM INTO is not supported on in-memory databases.
+	if strings.Contains(db.path, "mode=memory") {
+		return fmt.Errorf("db: snapshot not supported on in-memory databases")
+	}
+	if _, err := db.sql.Exec("VACUUM INTO ?", destPath); err != nil {
+		return fmt.Errorf("db: snapshot VACUUM INTO %q: %w", destPath, err)
+	}
+	return nil
+}
+
+// SnapshotDir creates a timestamped backup in dir and prunes backups older
+// than retainDays days.  dir is created with mode 0750 if it does not exist.
+// The backup filename format is mcias-20060102-150405.db.
+func (db *DB) SnapshotDir(dir string, retainDays int) (string, error) {
+	if err := os.MkdirAll(dir, 0750); err != nil {
+		return "", fmt.Errorf("db: create backup dir %q: %w", dir, err)
+	}
+
+	ts := time.Now().UTC().Format("20060102-150405")
+	dest := filepath.Join(dir, fmt.Sprintf("mcias-%s.db", ts))
+	if err := db.Snapshot(dest); err != nil {
+		return "", err
+	}
+
+	// Prune backups older than retainDays.
+	if retainDays > 0 {
+		cutoff := time.Now().UTC().AddDate(0, 0, -retainDays)
+		entries, err := os.ReadDir(dir)
+		if err != nil {
+			// Non-fatal: the backup was written; log pruning failure separately.
+			return dest, fmt.Errorf("db: list backup dir for pruning: %w", err)
+		}
+		for _, e := range entries {
+			if e.IsDir() || !strings.HasSuffix(e.Name(), ".db") {
+				continue
+			}
+			// Skip the file we just wrote.
+			if e.Name() == filepath.Base(dest) {
+				continue
+			}
+			info, err := e.Info()
+			if err != nil {
+				continue
+			}
+			if info.ModTime().Before(cutoff) {
+				_ = os.Remove(filepath.Join(dir, e.Name()))
+			}
+		}
+	}
+
+	return dest, nil
+}

internal/server/server.go

@@ -436,6 +436,12 @@ type loginRequest struct {
 	Username string `json:"username"`
 	Password string `json:"password"`
 	TOTPCode string `json:"totp_code,omitempty"`
+	// ServiceName and Tags identify the calling service. MCIAS evaluates the
+	// auth:login policy with these as the resource context, enabling operators
+	// to restrict which roles/account-types may log into specific services.
+	// Clients populate these from their [mcias] config section.
+	ServiceName string   `json:"service_name,omitempty"`
+	Tags        []string `json:"tags,omitempty"`
 }
 
 // loginResponse is the response body for a successful login.
@@ -546,13 +552,42 @@ func (s *Server) handleLogin(w http.ResponseWriter, r *http.Request) {
 	// Login succeeded: clear any outstanding failure counter.
 	_ = s.db.ClearLoginFailures(acct.ID)
 
-	// Determine expiry.
-	expiry := s.cfg.DefaultExpiry()
+	// Load roles for expiry decision and policy check.
 	roles, err := s.db.GetRoles(acct.ID)
 	if err != nil {
 		middleware.WriteError(w, http.StatusInternalServerError, "internal error", "internal_error")
 		return
 	}
+
+	// Policy check: evaluate auth:login with the calling service's context.
+	// Operator rules can deny login based on role, account type, service name,
+	// or tags. The built-in default Allow for auth:login is overridden by any
+	// matching Deny rule (deny-wins semantics).
+	//
+	// Security: policy is checked after credential verification so that a
+	// policy-denied login returns 403 (not 401), distinguishing a service
+	// access restriction from a wrong password without leaking user existence.
+	{
+		input := policy.PolicyInput{
+			Subject:     acct.UUID,
+			AccountType: string(acct.AccountType),
+			Roles:       roles,
+			Action:      policy.ActionLogin,
+			Resource: policy.Resource{
+				ServiceName: req.ServiceName,
+				Tags:        req.Tags,
+			},
+		}
+		if effect, _ := s.polEng.Evaluate(input); effect == policy.Deny {
+			s.writeAudit(r, model.EventLoginFail, &acct.ID, nil,
+				audit.JSON("reason", "policy_deny", "service_name", req.ServiceName))
+			middleware.WriteError(w, http.StatusForbidden, "access denied by policy", "policy_denied")
+			return
+		}
+	}
+
+	// Determine expiry.
+	expiry := s.cfg.DefaultExpiry()
 	for _, r := range roles {
 		if r == "admin" {
 			expiry = s.cfg.AdminExpiry()

internal/ui/handlers_totp.go

@@ -4,6 +4,7 @@ import (
 	"encoding/base32"
 	"encoding/base64"
 	"fmt"
+	"html/template"
 	"net/http"
 
 	qrcode "github.com/skip2/go-qrcode"
@@ -108,7 +109,7 @@ func (u *UIServer) handleTOTPEnrollStart(w http.ResponseWriter, r *http.Request)
 		u.renderTOTPSection(w, r, ProfileData{TOTPError: "internal error"})
 		return
 	}
-	qrDataURI := "data:image/png;base64," + base64.StdEncoding.EncodeToString(png)
+	qrDataURI := template.URL("data:image/png;base64," + base64.StdEncoding.EncodeToString(png)) //nolint:gosec // G203: trusted server-generated data URI
 
 	// Issue enrollment nonce for the confirm step.
 	nonce, err := u.issueTOTPEnrollNonce(acct.ID)
@@ -224,7 +225,7 @@ func (u *UIServer) reissueTOTPEnrollQR(w http.ResponseWriter, r *http.Request, a
 		u.renderTOTPSection(w, r, ProfileData{TOTPError: "internal error"})
 		return
 	}
-	qrDataURI := "data:image/png;base64," + base64.StdEncoding.EncodeToString(png)
+	qrDataURI := template.URL("data:image/png;base64," + base64.StdEncoding.EncodeToString(png)) //nolint:gosec // G203: trusted server-generated data URI
 
 	newNonce, nonceErr := u.issueTOTPEnrollNonce(acct.ID)
 	if nonceErr != nil {

internal/ui/ui.go

@@ -931,11 +931,11 @@ type ProfileData struct { //nolint:govet // fieldalignment: readability over ali
 	WebAuthnEnabled bool
 	// TOTP enrollment fields (populated only during enrollment flow).
 	TOTPEnabled     bool
-	TOTPSecret      string // base32-encoded; shown once during enrollment
-	TOTPQR          string // data:image/png;base64,... QR code
-	TOTPEnrollNonce string // single-use nonce for confirm step
-	TOTPError       string // enrollment-specific error message
-	TOTPSuccess     string // success flash after confirmation
+	TOTPSecret      string       // base32-encoded; shown once during enrollment
+	TOTPQR          template.URL // data:image/png;base64,... QR code; template.URL bypasses URL escaping
+	TOTPEnrollNonce string       // single-use nonce for confirm step
+	TOTPError       string       // enrollment-specific error message
+	TOTPSuccess     string       // success flash after confirmation
 }
 
 // PGCredsData is the view model for the "My PG Credentials" list page.

openapi.yaml

@@ -567,6 +567,12 @@ paths:
 
         If the account has TOTP enrolled, `totp_code` is required.
         Omitting it returns HTTP 401 with code `totp_required`.
+
+        `service_name` and `tags` identify the calling service. MCIAS
+        evaluates `auth:login` policy against these values after credentials
+        are verified. A policy-denied login returns HTTP 403 (not 401) so
+        callers can distinguish a service access restriction from bad credentials.
+        Clients should populate these from their `[mcias]` config section.
       operationId: login
       tags: [Public]
       requestBody:
@@ -587,6 +593,21 @@ paths:
                   type: string
                   description: Current 6-digit TOTP code. Required if TOTP is enrolled.
                   example: "123456"
+                service_name:
+                  type: string
+                  description: >
+                    Name of the calling service. Used by MCIAS to evaluate
+                    auth:login policy rules that target specific services.
+                  example: metatron
+                tags:
+                  type: array
+                  items:
+                    type: string
+                  description: >
+                    Tags describing the calling service (e.g. "env:restricted").
+                    MCIAS evaluates auth:login policy rules with required_tags
+                    against this list.
+                  example: ["env:restricted"]
       responses:
         "200":
           description: Login successful. Returns JWT and expiry.
@@ -607,6 +628,17 @@ paths:
                   value: {error: invalid credentials, code: unauthorized}
                 totp_required:
                   value: {error: TOTP code required, code: totp_required}
+        "403":
+          description: >
+            Login denied by policy. Credentials were valid but an operator
+            policy rule blocks this account from accessing the calling service.
+          content:
+            application/json:
+              schema:
+                $ref: "#/components/schemas/Error"
+              examples:
+                policy_denied:
+                  value: {error: access denied by policy, code: policy_denied}
         "429":
           $ref: "#/components/responses/RateLimited"
 

web/static/webauthn.js

@@ -25,10 +25,17 @@
     return bytes.buffer;
   }
 
-  // Get the CSRF token from the cookie for mutating requests.
+  // Get the CSRF token from the body's hx-headers attribute (HMAC header value).
+  // The cookie holds the nonce; the header holds the HMAC — they are different.
   function getCSRFToken() {
-    var match = document.cookie.match(/(?:^|;\s*)mcias_csrf=([^;]+)/);
-    return match ? match[1] : '';
+    try {
+      var hdr = document.body.getAttribute('hx-headers');
+      if (hdr) {
+        var parsed = JSON.parse(hdr);
+        if (parsed['X-CSRF-Token']) return parsed['X-CSRF-Token'];
+      }
+    } catch (e) { /* fall through */ }
+    return '';
   }
 
   function showError(id, msg) {

web/templates/account_detail.html

@@ -60,6 +60,12 @@
 <div class="card">
   <h2 style="font-size:1rem;font-weight:600;margin-bottom:1rem">Passkeys</h2>
   {{template "webauthn_credentials" .}}
+  {{if eq (string .Account.AccountType) "human"}}
+  <p class="text-muted text-small" style="margin-top:.75rem">
+    Passkey enrollment is self-service. The account holder can add passkeys from their
+    <a href="/profile">Profile</a> page.
+  </p>
+  {{end}}
 </div>
 {{end}}
 <div class="card">

web/templates/fragments/webauthn_enroll.html

@@ -4,7 +4,7 @@
   <div id="webauthn-enroll-success" class="alert alert-success" style="display:none" role="alert"></div>
   <div class="form-group">
     <label for="webauthn-name">Passkey Name</label>
-    <input class="form-control" type="text" id="webauthn-name" placeholder="e.g. YubiKey 5" value="Passkey">
+    <input class="form-control" type="text" id="webauthn-name" placeholder="e.g. YubiKey 5, Touch ID" value="Passkey">
   </div>
   <div class="form-group">
     <label for="webauthn-password">Current Password</label>

web/templates/profile.html

@@ -10,12 +10,12 @@
 </div>
 {{if .WebAuthnEnabled}}
 <div class="card">
-  <h2 style="font-size:1rem;font-weight:600;margin-bottom:1rem">Passkeys</h2>
+  <h2 style="font-size:1rem;font-weight:600;margin-bottom:1rem">Passkeys &amp; Security Keys</h2>
   <p class="text-muted text-small" style="margin-bottom:.75rem">
-    Passkeys let you sign in without a password using your device's biometrics or a security key.
+    Register a passkey (Touch ID, Windows Hello) or a hardware security key (YubiKey, FIDO2) for passwordless sign-in or two-factor authentication.
   </p>
   {{template "webauthn_credentials" .}}
-  <h3 style="font-size:.9rem;font-weight:600;margin:1rem 0 .5rem">Add a Passkey</h3>
+  <h3 style="font-size:.9rem;font-weight:600;margin:1rem 0 .5rem">Add a Passkey or Security Key</h3>
   {{template "webauthn_enroll" .}}
 </div>
 <script src="/static/webauthn.js"></script>