diff --git a/src/components/StateMachine.vue b/src/components/StateMachine.vue
index 1abb9a6..52281a2 100644
--- a/src/components/StateMachine.vue
+++ b/src/components/StateMachine.vue
@@ -87,14 +87,24 @@ const KIND_LABELS: Record<SmKind, string> = {
   revoke: "revoke()",
   expire: "expired()",
   clear: "clear()",
+  submit: "signIn(c)",
+  lock: "lockOut()",
+  signout: "signOut()",
+  reset: "reset()",
+  unlock: "unlock()",
 }
 const KIND_ORDER: SmKind[] = [
+  "submit",
   "succeed",
   "fail",
   "refresh",
   "loadMore",
   "navigate",
   "changeScope",
+  "lock",
+  "signout",
+  "reset",
+  "unlock",
   "persist",
   "store",
   "storeFail",
@@ -103,13 +113,24 @@ const KIND_ORDER: SmKind[] = [
   "clear",
 ]
 
+// Lay the legend out left-to-right, wrapping to a new row when it would overflow
+// the viewBox. Machines with few kinds (List, Grid, Calendar) stay on one row
+// exactly as before; richer machines (PasswordAuth) wrap instead of clipping.
 const legendItems = computed(() => {
   const present = new Set(props.machine.edges.map((e) => e.kind))
+  const maxX = 880
   let lxp = 70
+  let row = 0
   return KIND_ORDER.filter((k) => present.has(k)).map((k) => {
     const t = KIND_LABELS[k]
-    const item = { t, color: SM_COLORS[k], x1: lxp, x2: lxp + 18, tx: lxp + 24, y: 8, ty: 12 }
-    lxp += 24 + t.length * 6.6 + 26
+    const width = 24 + t.length * 6.6 + 26
+    if (lxp > 70 && lxp + width > maxX) {
+      row += 1
+      lxp = 70
+    }
+    const y = 8 + row * 16
+    const item = { t, color: SM_COLORS[k], x1: lxp, x2: lxp + 18, tx: lxp + 24, y, ty: y + 4 }
+    lxp += width
     return item
   })
 })
diff --git a/src/data/blueprint.ts b/src/data/blueprint.ts
index b10ec1b..8142f8e 100644
--- a/src/data/blueprint.ts
+++ b/src/data/blueprint.ts
@@ -72,6 +72,12 @@ export type SmKind =
   | "revoke"
   | "expire"
   | "clear"
+  // PasswordAuth session lifecycle
+  | "submit"
+  | "lock"
+  | "signout"
+  | "reset"
+  | "unlock"
 
 export interface SmEdge {
   from: string
@@ -107,12 +113,26 @@ export const SM_COLORS: Record<SmKind | "init", string> = {
   revoke: "#ff5c8a",
   expire: "#ffb84d",
   clear: "#b79cff",
+  // PasswordAuth: blue submit / magenta lockout / purple sign-out / teal recovery
+  submit: "#8fd0ff",
+  lock: "#ff5c8a",
+  signout: "#b79cff",
+  reset: "#67d0c0",
+  unlock: "#4fb3a6",
   init: "#4f7099",
 }
 
 // ── Blueprint ──────────────────────────────────────────────────────────────
 export type BlueprintRole = "feature" | "capability"
 
+// A reference from one blueprint to another (host, base, sibling, extension).
+// `name` is the referenced blueprint's display name; the Viewer resolves it to a
+// live link when that blueprint is registered, otherwise renders it as plain text.
+export interface RelatedRef {
+  name: string
+  relation: string
+}
+
 export interface Blueprint {
   slug: string
   name: string
@@ -125,4 +145,5 @@ export interface Blueprint {
   coreInvariants: string[]
   composition?: Composition
   stateMachine?: StateMachine
+  related?: RelatedRef[]
 }
diff --git a/src/data/blueprints.ts b/src/data/blueprints.ts
index 014add3..11e6d71 100644
--- a/src/data/blueprints.ts
+++ b/src/data/blueprints.ts
@@ -8,10 +8,12 @@ import { list } from "./listBlueprint"
 import { grid } from "./gridBlueprint"
 import { calendar } from "./calendarBlueprint"
 import { rememberMe } from "./rememberMeBlueprint"
+import { passwordAuth } from "./passwordAuthBlueprint"
 import ListSpecimen from "@/specimens/ListSpecimen.vue"
 import GridSpecimen from "@/specimens/GridSpecimen.vue"
 import CalendarSpecimen from "@/specimens/CalendarSpecimen.vue"
 import RememberMeSpecimen from "@/specimens/RememberMeSpecimen.vue"
+import PasswordAuthSpecimen from "@/specimens/PasswordAuthSpecimen.vue"
 
 export interface RegistryEntry {
   blueprint: Blueprint
@@ -22,6 +24,7 @@ export const REGISTRY: Record<string, RegistryEntry> = {
   list: { blueprint: list, specimen: ListSpecimen },
   grid: { blueprint: grid, specimen: GridSpecimen },
   calendar: { blueprint: calendar, specimen: CalendarSpecimen },
+  "password-auth": { blueprint: passwordAuth, specimen: PasswordAuthSpecimen },
   "remember-me": { blueprint: rememberMe, specimen: RememberMeSpecimen },
 }
 
@@ -30,3 +33,15 @@ export const BLUEPRINTS: Blueprint[] = Object.values(REGISTRY).map((e) => e.blue
 export function entryFor(slug: string): RegistryEntry | undefined {
   return REGISTRY[slug]
 }
+
+// Resolve a blueprint's display name (as used in `extendsName` / `related`) to its
+// slug, so cross-references between blueprints render as live links. Returns
+// undefined when the referenced blueprint is not illustrated yet — the reference
+// then renders as plain text.
+const slugByName: Record<string, string> = Object.fromEntries(
+  Object.entries(REGISTRY).map(([slug, e]) => [e.blueprint.name, slug]),
+)
+
+export function slugForName(name: string | undefined): string | undefined {
+  return name ? slugByName[name] : undefined
+}
diff --git a/src/data/passwordAuthBlueprint.ts b/src/data/passwordAuthBlueprint.ts
new file mode 100644
index 0000000..9a9e965
--- /dev/null
+++ b/src/data/passwordAuthBlueprint.ts
@@ -0,0 +1,348 @@
+// The PasswordAuth blueprint, as data. Transcribed by hand from the ontology
+// `password-auth` README + password-auth.als. A *feature* that extends Form: the
+// user submits a credential, the backend verifies it, and a bounded session is
+// established — with uniform failures (no username enumeration), lockout, and
+// silent refresh. It is the host that RememberMe / MFA / Captcha compose onto.
+
+import type { Blueprint, StateMachine } from "./blueprint"
+
+// The full AuthState lifecycle. Idle → Submitting fans out to Authenticated /
+// Error / LockedOut; Authenticated ⇄ Refreshing; and reset() / unlock() / signOut()
+// all return to Idle. Node coordinates are hand-placed for a clean layout.
+const PASSWORD_AUTH_MACHINE: StateMachine = {
+  initId: "idle",
+  caption: "Session lifecycle",
+  field: "state : AuthState",
+  nodes: [
+    { id: "idle", x: 30, y: 140, w: 90, h: 44, label: "Idle" },
+    { id: "submitting", x: 190, y: 140, w: 120, h: 44, label: "Submitting" },
+    { id: "authenticated", x: 400, y: 140, w: 140, h: 44, label: "Authenticated" },
+    { id: "refreshing", x: 630, y: 44, w: 130, h: 44, label: "Refreshing" },
+    { id: "lockedout", x: 175, y: 252, w: 120, h: 44, label: "LockedOut" },
+    { id: "error", x: 395, y: 252, w: 100, h: 44, label: "Error" },
+  ],
+  edges: [
+    { from: "idle", to: "submitting", label: "signIn(c)", kind: "submit", off: -34 },
+    { from: "submitting", to: "authenticated", label: "succeed(id)", kind: "succeed", off: -34 },
+    { from: "submitting", to: "lockedout", label: "lockOut()", kind: "lock", off: -20 },
+    { from: "submitting", to: "error", label: "fail()", kind: "fail", off: -24 },
+    { from: "authenticated", to: "refreshing", label: "refresh()", kind: "refresh", off: -26 },
+    { from: "refreshing", to: "authenticated", label: "refreshed(id)", kind: "succeed", off: -26 },
+    { from: "refreshing", to: "error", label: "refreshFailed()", kind: "fail", off: -30 },
+    { from: "authenticated", to: "idle", label: "signOut()", kind: "signout", off: 120 },
+    { from: "error", to: "idle", label: "reset()", kind: "reset", off: -40 },
+    { from: "lockedout", to: "idle", label: "unlock()", kind: "unlock", off: 30 },
+  ],
+}
+
+export const passwordAuth: Blueprint = {
+  slug: "password-auth",
+  name: "PasswordAuth",
+  tagline:
+    "Submit a credential, verify it against the backend, and hold a bounded session — with uniform failures, lockout, and silent refresh.",
+  role: "feature",
+  extendsName: "Form",
+
+  sig: {
+    header: "PasswordAuth ◁ Form",
+    fields: [
+      { name: "state", type: "AuthState", note: "lifecycle position" },
+      { name: "identity", type: "lone Identity", note: "present iff Authenticated or Refreshing" },
+      {
+        name: "pendingCredential",
+        type: "lone Credential",
+        note: "present only during Submitting",
+      },
+    ],
+    types: [
+      "AuthState = Idle | Submitting | Authenticated | Refreshing | LockedOut | Error",
+      "Identity   { subject : Subject, realm : Realm }   -- subject unique per realm",
+      "Credential { username : Username, secret : Secret }   -- 8 ≤ len(secret) ≤ 128",
+      "identity ≠ ⊥ ⟺ state ∈ {Authenticated, Refreshing}",
+      "pendingCredential ≠ ⊥ ⟺ state = Submitting",
+    ],
+  },
+
+  functions: [
+    {
+      id: "capture",
+      name: "Capture",
+      fig: "01",
+      caps: ["PasswordAuth", "Form"],
+      verb: "Collect username and secret from the form; mask the secret and mount both fields together so the OS credential manager can pair them.",
+      state: [
+        ["username", "Username"],
+        ["secret", "Secret"],
+      ],
+      behaviors: [],
+      invariants: [
+        "len(secret) ∈ [8, 128] — enforced before signIn(c) fires; the upper bound is surfaced to the user, never silently accepted (bcrypt truncates at 72 bytes)",
+      ],
+      failures: [
+        "Form auto-submit — browser autofill triggers signIn without user intent; the unintended submission locks the user out faster on stale credentials",
+      ],
+      perf: [
+        "Form responsiveness — input fields remain accessible during Submitting; the submit button is disabled to prevent double-fire",
+      ],
+      notes: [
+        "Username and password are mounted together on the submitted form so the credential manager can pair them on save.",
+      ],
+    },
+    {
+      id: "submit",
+      name: "Submit",
+      fig: "02",
+      caps: ["PasswordAuth"],
+      verb: "Transmit the credential over an authenticated channel (TLS) on a user gesture; never log or persist the secret.",
+      state: [
+        ["state", "AuthState"],
+        ["pendingCredential", "lone Credential"],
+      ],
+      behaviors: [
+        {
+          sig: "signIn(c)",
+          pre: "state = Idle",
+          eff: "state ← Submitting, pendingCredential ← c",
+        },
+      ],
+      invariants: [
+        "pendingCredential ≠ ⊥ ⟺ state = Submitting — the credential is held only across the verification call",
+        "the plaintext secret is never persisted, logged, or held past Submitting",
+      ],
+      failures: [
+        "Plaintext leak — secret logged, persisted, or kept in app memory past Submitting; exposed to crash dumps, analytics, or an attacker with disk read",
+        "Form auto-submit — autofill fires signIn without a user gesture",
+      ],
+      perf: [
+        "Verification — signIn to Authenticated or Error completes within 2 s on a stable network",
+      ],
+      notes: [
+        "The signIn(c) submission must be triggered by a user gesture, never auto-fired on autofill completion.",
+      ],
+    },
+    {
+      id: "verify",
+      name: "Verify",
+      fig: "03",
+      caps: ["PasswordAuth"],
+      verb: "Backend checks the credential against the credential store; returns an Identity or a uniform failure that never distinguishes unknown-user from wrong-password.",
+      state: [
+        ["state", "AuthState"],
+        ["identity", "lone Identity"],
+      ],
+      behaviors: [
+        {
+          sig: "succeed(id)",
+          pre: "state = Submitting, verification passed",
+          eff: "state ← Authenticated, identity ← id, pendingCredential ← ⊥",
+        },
+        {
+          sig: "fail()",
+          pre: "state = Submitting, verification failed",
+          eff: "state ← Error, pendingCredential ← ⊥",
+        },
+      ],
+      invariants: [
+        "succeed(id) requires backend verification — the relying party never trusts client-side validation alone",
+        "fail() does not distinguish 'wrong password' from 'unknown username' — messages stay uniform",
+      ],
+      failures: [
+        "Username enumeration — fail() reason distinguishes 'no such user' from 'wrong password'; an attacker maps valid usernames before a targeted attack",
+        "Timing attack — verification time differs for valid vs invalid usernames; the attacker infers validity from response latency",
+        "Credential reuse — the backend accepts a known-breached password, so a password compromised elsewhere grants access here",
+      ],
+      perf: [
+        "Constant-time response — failure responses take the same time regardless of username validity",
+        "Failure visibility — Error surfaces with a uniform message, never revealing whether the username exists",
+      ],
+      notes: [],
+    },
+    {
+      id: "limit",
+      name: "Limit",
+      fig: "04",
+      caps: ["PasswordAuth"],
+      verb: "Track failed attempts per user / per IP; transition to LockedOut past the threshold.",
+      state: [["state", "AuthState"]],
+      behaviors: [
+        {
+          sig: "lockOut()",
+          pre: "state = Submitting, attempt threshold exceeded",
+          eff: "state ← LockedOut, pendingCredential ← ⊥",
+        },
+      ],
+      invariants: [
+        "state = LockedOut is reached only from Submitting via lockOut() — never user-triggerable directly",
+      ],
+      failures: [
+        "Brute force — no attempt counting / no lockOut threshold; the attacker tries unbounded password guesses",
+        "Lockout bypass — unlock() callable without elapsed cooldown; the rate limit is defeated and brute force resumes",
+      ],
+      perf: [
+        "Lockout feedback — LockedOut surfaces to the user within 1 s of trigger, with the cooldown duration shown",
+      ],
+      notes: [],
+    },
+    {
+      id: "establish",
+      name: "Establish",
+      fig: "05",
+      caps: ["PasswordAuth", "Identity"],
+      verb: "Persist the session token; expose subject and realm to the consumer.",
+      state: [["identity", "lone Identity"]],
+      behaviors: [],
+      invariants: [
+        "identity ≠ ⊥ ⟺ state ∈ {Authenticated, Refreshing} — no ghost identity outside an active session",
+        "the consumer sees subject and realm; the plaintext secret never crosses the client-persistence boundary",
+      ],
+      failures: [
+        "Replay (token theft) — the session token leaks (XSS, network capture); the attacker impersonates the user until the token expires",
+      ],
+      perf: [],
+      notes: [
+        "Client persistence may store Identity.subject / Identity.realm and the composed session credential — never the plaintext secret in any form.",
+      ],
+    },
+    {
+      id: "refresh",
+      name: "Refresh",
+      fig: "06",
+      caps: ["PasswordAuth"],
+      verb: "Renew the session token silently before expiry; preserve subject and realm.",
+      state: [
+        ["state", "AuthState"],
+        ["identity", "lone Identity"],
+      ],
+      behaviors: [
+        {
+          sig: "refresh()",
+          pre: "state = Authenticated, session token refreshable",
+          eff: "state ← Refreshing",
+        },
+        {
+          sig: "refreshed(id)",
+          pre: "state = Refreshing, id.subject = identity.subject, id.realm = identity.realm",
+          eff: "state ← Authenticated, identity ← id",
+        },
+        {
+          sig: "refreshFailed()",
+          pre: "state = Refreshing",
+          eff: "state ← Error, identity ← ⊥",
+        },
+      ],
+      invariants: [
+        "refreshed(id) preserves both subject and realm — refresh never silently swaps user or tenant",
+      ],
+      failures: [
+        "Subject swap on refresh — refreshed(id) accepts an id with a different subject or realm; the attacker's refresh response steals the session",
+        "Stale session — the session is used past expiry without refresh; API calls 401 and the user is surprise-logged-out",
+      ],
+      perf: [
+        "Silent refresh — completes within 200 ms and before any in-flight API call observes a 401",
+      ],
+      notes: [],
+    },
+    {
+      id: "recover",
+      name: "Recover",
+      fig: "07",
+      caps: ["PasswordAuth"],
+      verb: "Surface Error distinctly from LockedOut; expose reset() and the cooldown-driven unlock().",
+      state: [["state", "AuthState"]],
+      behaviors: [
+        { sig: "reset()", pre: "state = Error", eff: "state ← Idle" },
+        {
+          sig: "unlock()",
+          pre: "state = LockedOut, cooldown elapsed",
+          eff: "state ← Idle",
+        },
+      ],
+      invariants: [
+        "unlock() is reachable only from LockedOut and requires elapsed cooldown — not user-triggerable",
+      ],
+      failures: [
+        "Forgotten password loop — no recovery path from LockedOut or an unknown username; the user is permanently locked out with no self-service unblock",
+      ],
+      perf: [],
+      notes: [
+        "Recovery from a forgotten password is a sibling blueprint (PasswordReset), not part of this contract.",
+      ],
+    },
+    {
+      id: "terminate",
+      name: "Terminate",
+      fig: "08",
+      caps: ["PasswordAuth"],
+      verb: "Clear the local session and invalidate the session token at the backend.",
+      state: [
+        ["state", "AuthState"],
+        ["identity", "lone Identity"],
+      ],
+      behaviors: [
+        {
+          sig: "signOut()",
+          pre: "state = Authenticated",
+          eff: "state ← Idle, identity ← ⊥",
+        },
+      ],
+      invariants: ["signOut() clears identity — no active session remains locally"],
+      failures: [
+        "Stale session — a logged-out session token still valid at the backend can be replayed",
+      ],
+      perf: [],
+      notes: [
+        "A logout is not a credential operation — the secret never crosses the logout boundary; only the session credential is sent so the server can revoke.",
+      ],
+    },
+  ],
+
+  coreInvariants: [
+    "identity ≠ ⊥ ⟺ state ∈ {Authenticated, Refreshing} — no ghost identity outside an active session",
+    "pendingCredential ≠ ⊥ ⟺ state = Submitting — credentials are held only across the verification call",
+    "the plaintext secret is never persisted, logged, or held past Submitting",
+    "refreshed(id) preserves both subject and realm — refresh never swaps user or tenant",
+    "succeed(id) requires backend verification — the relying party never trusts client-side validation alone",
+    "unlock() is reachable only from LockedOut and requires elapsed cooldown — not user-triggerable",
+    "len(secret) ∈ [8, 128] is enforced before signIn(c) fires",
+  ],
+
+  composition: {
+    caps: [
+      { id: "core", label: "PasswordAuth : Form", sub: "state, identity", core: true },
+      { id: "form", label: "Form", sub: "fields, filled, invalid" },
+      { id: "cred", label: "Credential", sub: "username, secret" },
+      { id: "identity", label: "Identity", sub: "subject, realm" },
+    ],
+    funcs: ["Capture", "Submit", "Verify", "Limit", "Establish", "Refresh", "Recover", "Terminate"],
+    links: [
+      ["form", "Capture"],
+      ["cred", "Capture"],
+      ["cred", "Submit"],
+      ["core", "Submit"],
+      ["core", "Verify"],
+      ["identity", "Verify"],
+      ["core", "Limit"],
+      ["core", "Establish"],
+      ["identity", "Establish"],
+      ["core", "Refresh"],
+      ["identity", "Refresh"],
+      ["core", "Recover"],
+      ["form", "Recover"],
+      ["core", "Terminate"],
+      ["identity", "Terminate"],
+    ],
+  },
+
+  stateMachine: PASSWORD_AUTH_MACHINE,
+
+  related: [
+    { name: "Form", relation: "extends · base" },
+    { name: "RememberMe", relation: "composable extension" },
+    { name: "MFA", relation: "composable extension" },
+    { name: "Captcha", relation: "composable extension" },
+    { name: "StatelessSession", relation: "composable extension" },
+    { name: "PasswordReset", relation: "sibling · recovery" },
+    { name: "SSO", relation: "sibling · delegated" },
+    { name: "Passkey", relation: "sibling · passwordless" },
+  ],
+}
diff --git a/src/specimens/PasswordAuthSpecimen.vue b/src/specimens/PasswordAuthSpecimen.vue
new file mode 100644
index 0000000..f3c10ed
--- /dev/null
+++ b/src/specimens/PasswordAuthSpecimen.vue
@@ -0,0 +1,430 @@
+<script setup lang="ts">
+import { computed } from "vue"
+
+const props = defineProps<{ activeId: string }>()
+
+// PasswordAuth is a Form feature, so the specimen is a real sign-in card shown in
+// its lifecycle states — Idle / Submitting / Error / LockedOut / Authenticated /
+// Refreshing — and each function highlights the region it owns.
+
+type Screen = "form" | "authed"
+type Region =
+  | "fields"
+  | "button"
+  | "verify"
+  | "attempts"
+  | "identity"
+  | "refresh"
+  | "error"
+  | "signout"
+
+interface Frame {
+  screen: Screen
+  stateBadge: string
+  error?: string
+  locked?: string
+  submitting?: boolean
+  attempts?: number
+  identity?: boolean
+  refreshing?: boolean
+  hl?: Region
+  tag?: string
+  note?: string
+}
+
+const frame = computed<Frame>(() => {
+  switch (props.activeId) {
+    case "capture":
+      return {
+        screen: "form",
+        stateBadge: "state = Idle",
+        hl: "fields",
+        tag: "◈ CAPTURE",
+        note: "Collect username + secret; mask the secret and mount both fields together for the OS credential manager. 8 ≤ len(secret) ≤ 128.",
+      }
+    case "submit":
+      return {
+        screen: "form",
+        stateBadge: "state = Idle → Submitting",
+        submitting: true,
+        hl: "button",
+        tag: "◈ SUBMIT",
+        note: "signIn(c) fires on a user gesture → Submitting. The secret crosses over TLS and is never logged or persisted.",
+      }
+    case "verify":
+      return {
+        screen: "form",
+        stateBadge: "state = Submitting",
+        submitting: true,
+        hl: "verify",
+        tag: "◈ VERIFY",
+        note: "Backend checks the credential → succeed(id) or a uniform fail(). No message distinguishes unknown-user from wrong-password.",
+      }
+    case "limit":
+      return {
+        screen: "form",
+        stateBadge: "state = Submitting → LockedOut",
+        locked: "Too many attempts — try again in 4:59",
+        attempts: 3,
+        hl: "attempts",
+        tag: "◈ LIMIT",
+        note: "Past the failed-attempt threshold → lockOut() → LockedOut. Never user-triggerable; the cooldown is shown.",
+      }
+    case "establish":
+      return {
+        screen: "authed",
+        stateBadge: "state = Authenticated",
+        identity: true,
+        hl: "identity",
+        tag: "◈ ESTABLISH",
+        note: "succeed(id) establishes the session; the consumer sees subject + realm. The plaintext secret never crosses the persistence boundary.",
+      }
+    case "refresh":
+      return {
+        screen: "authed",
+        stateBadge: "state = Authenticated → Refreshing",
+        identity: true,
+        refreshing: true,
+        hl: "refresh",
+        tag: "◈ REFRESH",
+        note: "Silent refresh renews the token within 200 ms, preserving subject + realm — before any in-flight call observes a 401.",
+      }
+    case "recover":
+      return {
+        screen: "form",
+        stateBadge: "state = Error",
+        error: "Incorrect email or password",
+        hl: "error",
+        tag: "◈ RECOVER",
+        note: "Error surfaces with a uniform message. reset() clears it; unlock() returns from LockedOut after cooldown — never revealing whether the username exists.",
+      }
+    case "terminate":
+      return {
+        screen: "authed",
+        stateBadge: "state = Authenticated → Idle",
+        identity: true,
+        hl: "signout",
+        tag: "◈ TERMINATE",
+        note: "signOut() clears the local session and invalidates the token at the backend. The secret never crosses the logout boundary.",
+      }
+    default:
+      return {
+        screen: "form",
+        stateBadge: "state = Idle",
+        note: "Submit a credential → verify against the backend → establish a bounded session. Failures stay uniform; lockout gates brute force; refresh renews silently.",
+      }
+  }
+})
+
+const isHl = (r: Region) => frame.value.hl === r
+const tagOf = (r: Region) => (frame.value.hl === r ? frame.value.tag : undefined)
+</script>
+
+<template>
+  <div class="specimen">
+    <p v-if="frame.note" class="note">{{ frame.note }}</p>
+
+    <div class="device">
+      <div class="dev-bar">
+        <span class="dot" /><span class="dot" /><span class="dot" />
+        <span class="dev-title">MyApp</span>
+      </div>
+
+      <!-- sign-in form -->
+      <div v-if="frame.screen === 'form'" class="screen">
+        <div
+          v-if="frame.error"
+          class="banner error"
+          :class="isHl('error') ? ['hl', 'tag-b'] : []"
+          :data-tag="tagOf('error')"
+        >
+          ✗ {{ frame.error }}
+        </div>
+        <div v-if="frame.locked" class="banner locked">🔒 {{ frame.locked }}</div>
+
+        <div class="s-title">Sign in to MyApp</div>
+
+        <div
+          class="fields"
+          :class="isHl('fields') ? ['hl', 'tag-b'] : []"
+          :data-tag="tagOf('fields')"
+        >
+          <div class="field">user@example.com</div>
+          <div class="field secret">•••••••••</div>
+        </div>
+
+        <div
+          v-if="frame.attempts"
+          class="attempts"
+          :class="isHl('attempts') ? ['hl', 'tag-b'] : []"
+          :data-tag="tagOf('attempts')"
+        >
+          <span v-for="n in 3" :key="n" class="pip" :class="{ used: n <= frame.attempts }">✕</span>
+          <span class="attempts-note">{{ frame.attempts }} / 3 attempts</span>
+        </div>
+
+        <div
+          class="btn"
+          :class="[{ busy: frame.submitting }, isHl('button') ? ['hl', 'tag-b'] : []]"
+          :data-tag="tagOf('button')"
+        >
+          <template v-if="frame.submitting"><span class="spin">⟳</span> Signing in…</template>
+          <template v-else>Sign in <span class="arrow">→</span></template>
+        </div>
+
+        <div
+          v-if="frame.submitting"
+          class="verifyline"
+          :class="isHl('verify') ? ['hl', 'tag-b'] : []"
+          :data-tag="tagOf('verify')"
+        >
+          → verifying credential with backend…
+        </div>
+      </div>
+
+      <!-- signed-in -->
+      <div v-else class="screen">
+        <div class="si-title">You're signed in</div>
+        <div
+          class="idchip"
+          :class="isHl('identity') ? ['hl', 'tag-b'] : []"
+          :data-tag="tagOf('identity')"
+        >
+          subject = u_84f · realm = myapp
+        </div>
+        <div
+          v-if="frame.refreshing"
+          class="refresh-badge"
+          :class="isHl('refresh') ? ['hl', 'tag-b'] : []"
+          :data-tag="tagOf('refresh')"
+        >
+          <span class="spin">⟳</span> refreshing session…
+        </div>
+        <div
+          class="btn ghost"
+          :class="isHl('signout') ? ['hl', 'tag-b'] : []"
+          :data-tag="tagOf('signout')"
+        >
+          Sign out
+        </div>
+      </div>
+    </div>
+
+    <div class="machinery">
+      <div class="statebar">
+        <span class="badge">{{ frame.stateBadge }}</span>
+      </div>
+    </div>
+  </div>
+</template>
+
+<style scoped>
+.specimen {
+  --ink: var(--color-base-content);
+  --ink-faint: #4f7099;
+  --amber: var(--color-accent);
+  --amber-dim: color-mix(in srgb, var(--color-accent) 14%, transparent);
+  --cyan: var(--color-secondary);
+  --red: var(--color-error);
+  --paper: var(--color-base-100);
+  --line: rgba(200, 226, 255, 0.14);
+  --line-strong: rgba(200, 226, 255, 0.3);
+  font-size: 13px;
+}
+.note {
+  color: var(--ink-faint);
+  font-size: 11px;
+  font-style: italic;
+  margin: 0 0 12px;
+}
+
+/* device */
+.device {
+  max-width: 340px;
+  margin: 0 auto;
+  border: 1px solid var(--line-strong);
+  background: var(--paper);
+}
+.dev-bar {
+  display: flex;
+  align-items: center;
+  gap: 5px;
+  padding: 6px 10px;
+  border-bottom: 1px solid var(--line);
+}
+.dev-bar .dot {
+  width: 6px;
+  height: 6px;
+  border-radius: 50%;
+  background: var(--ink-faint);
+  opacity: 0.5;
+}
+.dev-title {
+  margin-left: 8px;
+  font-size: 10px;
+  letter-spacing: 0.12em;
+  text-transform: uppercase;
+  color: var(--ink-faint);
+}
+.screen {
+  padding: 20px 22px 22px;
+}
+.s-title,
+.si-title {
+  text-align: center;
+  color: var(--ink);
+  margin-bottom: 14px;
+  letter-spacing: 0.03em;
+}
+
+/* fields */
+.fields {
+  display: flex;
+  flex-direction: column;
+  gap: 8px;
+}
+.field {
+  border: 1px solid var(--line);
+  padding: 8px 10px;
+  color: color-mix(in srgb, var(--ink) 75%, transparent);
+  font-size: 12px;
+}
+.field.secret {
+  color: var(--ink-faint);
+  letter-spacing: 0.15em;
+}
+
+/* attempts */
+.attempts {
+  display: flex;
+  align-items: center;
+  gap: 6px;
+  margin-top: 10px;
+  font-size: 11px;
+}
+.pip {
+  color: var(--line-strong);
+}
+.pip.used {
+  color: var(--red);
+}
+.attempts-note {
+  margin-left: 4px;
+  color: var(--ink-faint);
+}
+
+/* button */
+.btn {
+  display: flex;
+  align-items: center;
+  justify-content: center;
+  gap: 8px;
+  border: 1px solid var(--cyan);
+  background: color-mix(in srgb, var(--cyan) 16%, transparent);
+  color: var(--ink);
+  padding: 8px;
+  margin-top: 12px;
+  letter-spacing: 0.04em;
+}
+.btn .arrow {
+  color: var(--cyan);
+}
+.btn.busy {
+  border-color: var(--line-strong);
+  color: var(--ink-faint);
+  background: rgba(255, 255, 255, 0.02);
+}
+.btn.ghost {
+  background: transparent;
+  border-color: var(--line-strong);
+  color: var(--ink-faint);
+}
+.verifyline {
+  margin-top: 12px;
+  font-size: 11px;
+  color: var(--ink-faint);
+}
+
+/* banners */
+.banner {
+  padding: 6px 10px;
+  font-size: 11px;
+  margin-bottom: 14px;
+  text-align: center;
+  border: 1px solid;
+}
+.banner.error {
+  border-color: var(--red);
+  background: color-mix(in srgb, var(--red) 14%, transparent);
+  color: var(--red);
+}
+.banner.locked {
+  border-color: var(--amber);
+  background: var(--amber-dim);
+  color: var(--amber);
+}
+
+/* signed-in */
+.idchip {
+  text-align: center;
+  border: 1px dashed var(--line-strong);
+  padding: 8px;
+  margin-bottom: 12px;
+  font-size: 12px;
+  color: var(--cyan);
+}
+.refresh-badge {
+  display: flex;
+  align-items: center;
+  justify-content: center;
+  gap: 6px;
+  color: var(--amber);
+  font-size: 11px;
+  margin-bottom: 12px;
+}
+
+/* machinery */
+.machinery {
+  max-width: 340px;
+  margin: 14px auto 0;
+}
+.statebar {
+  display: flex;
+  flex-wrap: wrap;
+  gap: 8px;
+}
+.badge {
+  border: 1px solid var(--line-strong);
+  color: var(--cyan);
+  padding: 2px 8px;
+  font-size: 10px;
+  letter-spacing: 0.05em;
+}
+
+/* callouts — same convention as the other specimens */
+.hl {
+  outline: 1.5px dashed var(--amber);
+  outline-offset: 3px;
+  position: relative;
+  z-index: 2;
+}
+.hl[data-tag]::after {
+  content: attr(data-tag);
+  position: absolute;
+  top: -10px;
+  left: 8px;
+  background: var(--paper);
+  color: var(--amber);
+  font-size: 9px;
+  padding: 0 5px;
+  border: 1px solid var(--amber);
+  white-space: nowrap;
+  letter-spacing: 0.1em;
+  line-height: 1.5;
+  z-index: 3;
+}
+.hl.tag-b[data-tag]::after {
+  top: auto;
+  bottom: -10px;
+}
+</style>