Fix passkey length and add reset action

Introduce a single PASSKEY_LENGTH constant (6) and enforce it across passkey config/load/save/update, removing the previous user-adjustable length/clamping. Add resetSequence() to clear stored hash/salt, reset length/attempts/lockout and persist the cleared state. Update settings UI: relabel "Change Passkey" to "Reset Passkey", show "6 digits" and "Fixed for testing", remove length adjustment controls/handlers, and call state.passkey.resetSequence() when resetting so setup will run on next lock.

src/core/passkey.js

@@ -1,11 +1,12 @@
 const PASSKEY_STORAGE_KEY = "nebula.passkey.v1";
 const PASSKEY_VERSION = 1;
+const PASSKEY_LENGTH = 6;
 
 const clamp = (value, min, max) => Math.max(min, Math.min(max, value));
 
 const FALLBACK_CONFIG = {
   enabled: true,
-  length: 6,
+  length: PASSKEY_LENGTH,
   requireConfirm: false,
   keyboardSupport: true,
   maxAttempts: 5,
@@ -49,7 +50,7 @@ export const loadPasskeyConfig = () => {
     return {
       ...FALLBACK_CONFIG,
       ...parsed,
-      length: clamp(Number(parsed.length ?? FALLBACK_CONFIG.length), 4, 8),
+      length: PASSKEY_LENGTH,
       maxAttempts: clamp(Number(parsed.maxAttempts ?? FALLBACK_CONFIG.maxAttempts), 1, 10),
       cooldownSeconds: clamp(Number(parsed.cooldownSeconds ?? FALLBACK_CONFIG.cooldownSeconds), 5, 120),
       requireConfirm: Boolean(parsed.requireConfirm ?? FALLBACK_CONFIG.requireConfirm),
@@ -76,7 +77,7 @@ export const savePasskeyConfig = (config) => {
     ...FALLBACK_CONFIG,
     ...config,
     version: PASSKEY_VERSION,
-    length: clamp(Number(config.length ?? FALLBACK_CONFIG.length), 4, 8),
+    length: PASSKEY_LENGTH,
     maxAttempts: clamp(Number(config.maxAttempts ?? FALLBACK_CONFIG.maxAttempts), 1, 10),
     cooldownSeconds: clamp(Number(config.cooldownSeconds ?? FALLBACK_CONFIG.cooldownSeconds), 5, 120),
   };
@@ -150,13 +151,22 @@ export const createPasskeyController = () => {
 
   const updateConfig = (partial) => {
     Object.assign(config, partial);
-    config.length = clamp(Number(config.length), 4, 8);
+    config.length = PASSKEY_LENGTH;
     config.maxAttempts = clamp(Number(config.maxAttempts), 1, 10);
     config.cooldownSeconds = clamp(Number(config.cooldownSeconds), 5, 120);
     persist();
     return { ...config };
   };
 
+  const resetSequence = () => {
+    config.hash = "";
+    config.salt = "";
+    config.length = PASSKEY_LENGTH;
+    failedAttempts = 0;
+    lockoutUntil = 0;
+    persist();
+  };
+
   const getConfig = () => ({ ...config });
 
   return {
@@ -164,6 +174,7 @@ export const createPasskeyController = () => {
     updateConfig,
     verifySequence,
     setSequence,
+    resetSequence,
     inLockout,
     getLockoutRemainingMs,
     hasPasskey: () => Boolean(config.hash && config.salt),

src/views/settings/settings.js

@@ -36,13 +36,13 @@ const SETTINGS_TEMPLATE = `
           <p class="muted" data-passkey-enabled>Enabled</p>
         </button>
         <button class="focusable settings-card" data-focusable="true" data-row="1" data-col="1" data-toggle="passkey-change" data-focus-key="passkey-change">
-          <p class="settings-card-title">Change Passkey</p>
+          <p class="settings-card-title">Reset Passkey</p>
-          <p class="muted" data-passkey-change>Open setup on next lock</p>
+          <p class="muted" data-passkey-change>Clear and set a new passkey</p>
         </button>
         <button class="focusable settings-card" data-focusable="true" data-row="1" data-col="2" data-toggle="passkey-length" data-focus-key="passkey-length">
           <p class="settings-card-title">Required Length</p>
-          <p class="muted" data-passkey-length>6 inputs</p>
+          <p class="muted" data-passkey-length>6 digits</p>
-          <p class="muted">Use LB / RB to adjust</p>
+          <p class="muted">Fixed for testing</p>
         </button>
         <button class="focusable settings-card" data-focusable="true" data-row="1" data-col="3" data-toggle="passkey-confirm" data-focus-key="passkey-confirm">
           <p class="settings-card-title">Require Confirm</p>
@@ -185,6 +185,7 @@ export const createSettingsView = ({ state, renderView }) => {
           }
 
           if (toggle === "passkey-change") {
+            state.passkey.resetSequence();
             state.passkeySetupRequired = true;
             state.locked = true;
             state.activeView = "lock";
@@ -193,8 +194,6 @@ export const createSettingsView = ({ state, renderView }) => {
           }
 
           if (toggle === "passkey-length") {
-            const current = state.passkey.getConfig().length;
-            updatePasskey({ length: current >= 8 ? 4 : current + 1 });
             return;
           }
 
@@ -221,18 +220,6 @@ export const createSettingsView = ({ state, renderView }) => {
             return false;
           }
 
-          if (action === "l1") {
-            const next = state.passkey.getConfig().length - 1;
-            updatePasskey({ length: next < 4 ? 8 : next });
-            return true;
-          }
-
-          if (action === "r1") {
-            const next = state.passkey.getConfig().length + 1;
-            updatePasskey({ length: next > 8 ? 4 : next });
-            return true;
-          }
-
           return false;
         },
       };