Fix passkey login tracking, add email opt-out UI guards, and add Quick/Full quote mode toggle

- PasskeyController: set LastLoginDate on passkey sign-in so Company Health
  and audit pages show accurate last-login times (was always showing 'Never')
- Jobs/Index status modal: disable 'Notify customer' email toggle and show
  warning when customer has notifications turned off; CustomerNotifyByEmail
  added to JobListDto + JobProfile mapping + data-customer-notify attribute
- Quotes/Create: disable 'Send quote via email' checkbox with 'Notifications
  off' badge when selected customer has email opt-out; ViewBag.CustomerEmailOptOutIds
  added alongside existing CustomerTaxExemptIds pattern
- Quotes/Create: Quick Quote / Full Quote segmented toggle at top of form;
  hides non-essential fields (dates, notes, tags, oven, discount, photos) in
  Quick mode; selection persisted in localStorage
- InvoicesController Send action: improved error logging and user-facing
  warning when PDF generation or email dispatch fails after status is saved
- item-wizard.js: guard item restoration with try/catch; ensure writeHiddenFields
  always runs on form submit via capture-phase listener
- Help docs and AI knowledge base updated for all new features

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

src/PowderCoating.Web/Views/Help/Jobs.cshtml

@@ -77,6 +77,11 @@
                 (waiting for customer approval, missing materials, etc.) and Cancelled to formally close a job that
                 will not be completed.
             </p>
+            <p>
+                On the Jobs list, click any status badge to open a quick-change modal. The modal includes a
+                <strong>Notify customer via email</strong> toggle. If the customer has email notifications turned off,
+                that toggle is automatically disabled and a warning note is shown — no email will be sent regardless.
+            </p>
 
             <div class="table-responsive">
                 <table class="table table-sm table-bordered mb-0">

src/PowderCoating.Web/Views/Help/Quotes.cshtml

@@ -40,6 +40,28 @@
             <h2 class="h4 fw-bold border-bottom pb-2 mb-3">
                 <i class="bi bi-plus-circle text-primary me-2"></i>Creating a Quote
             </h2>
+
+            <h3 class="h6 fw-semibold mt-0 mb-2"><i class="bi bi-lightning me-1 text-primary"></i>Quick Quote vs Full Quote</h3>
+            <p>
+                The quote form offers two modes, selectable via the <strong>Quick Quote / Full Quote</strong> toggle at the
+                top of the page. Your selection is remembered automatically for next time.
+            </p>
+            <ul class="mb-3">
+                <li class="mb-1"><strong>Quick Quote</strong> — shows only the essentials: customer picker (or walk-in info) and
+                the item wizard. Dates, notes, tags, oven settings, discounts, and photos are hidden. Use this for
+                fast phone or counter estimates where you just need a price.</li>
+                <li class="mb-1"><strong>Full Quote</strong> — shows the complete form with all fields. Use this for formal
+                quotes where you want to capture notes, set an expiry date, apply a discount, or add photos.</li>
+            </ul>
+            <div class="alert alert-permanent alert-info d-flex gap-2 mb-3" role="alert">
+                <i class="bi bi-lightbulb-fill flex-shrink-0 mt-1"></i>
+                <div>
+                    Switching to Quick Quote does not change how the quote saves — all pricing calculations and the item
+                    wizard work exactly the same. Hidden fields use their default values (no rush fee, no discount, company
+                    default tax rate).
+                </div>
+            </div>
+
             <p>To create a new quote:</p>
             <ol class="mb-3">
                 <li class="mb-2">Go to <strong>Operations &rsaquo; Quotes</strong> and click <strong>New Quote</strong>.</li>
@@ -251,6 +273,16 @@
                 <li class="mb-2">Click <strong>Send Quote</strong>. The status changes from Draft to Sent.</li>
                 <li class="mb-2">If email notifications are configured for your company, the customer will automatically receive an email with the quote details.</li>
             </ol>
+            <div class="alert alert-permanent alert-warning d-flex gap-2 mb-3" role="alert">
+                <i class="bi bi-bell-slash flex-shrink-0 mt-1"></i>
+                <div>
+                    <strong>Customer notifications off:</strong> If a customer has email notifications turned off, the
+                    <strong>Send quote via email</strong> checkbox on the Create page is automatically disabled and marked
+                    with a <em>Notifications off</em> badge. The Send button on the Details page is also disabled.
+                    To re-enable emails for this customer, open their record and turn on <strong>Notify by Email</strong>
+                    under their contact settings.
+                </div>
+            </div>
             <p>
                 You can also manually mark a quote as <strong>Approved</strong> or <strong>Rejected</strong> when
                 you hear back from the customer verbally or by phone, without going through a formal email send.