[Quotes]: Email the company when a quote is approved or rejected in the client portal #672

v1 notified the quote's owner by email whenever a guest approved or rejected a quote: email_quote_status() (application/helpers/mailer_helper.php:178-210), called from application/modules/guest/controllers/Quotes.php:166,199 and View.php:266,291 — subject/body built from quote_status_email_subject/quote_status_email_body translations with client name, status, quote number, and a link to the quote view.

Blocked by: #392 (Client Portal / customer accounts) — there is no v2 surface where a client can approve/reject yet. File now so the portal work inherits the requirement; also relates to #259.

Specific

When a portal user (or signed guest link) sets a quote to Approved/Rejected:

1. Queue a notification mail to the quote's owning user (quote.user_id email; fallback company email) — no template needed, translation-driven strings like v1 (ip.quote_status_email_subject / ip.quote_status_email_body with client name, localized status, quote number, and an internal link to EditQuote).
2. Send only on the portal-driven transition, not when staff change status in the company panel.
3. Log a MailQueue row against the quote ([Invoices] Create/update MailQueue record to log email delivery (timestamp, recipient, status) #527).

Measurable

Portal approval produces exactly one mail to the owner with the correct subject; staff-side status edits produce none.

Achievable

Listener on the portal's status-change event (to be defined by #392) + one simple Mailable.

Relevant

Quote approval is the moment the seller must act; v1 users rely on this ping and will notice its absence immediately.

Time-Bound

Same milestone as the portal's quote approve/reject feature.

Arrange

Quote (status Sent) owned by user U with email; portal context per #392 test harness; Mail::fake().

Act

Approve the quote through the portal endpoint.

Assert

• One mailable queued to U's email; subject contains client name, "approved", quote number
• Body links to the quote's edit page
• Rejecting sends the "rejected" variant
• Changing status from the company panel queues nothing
• mail_queue row logged for the quote