feat(03-cookie-consent): integrate CookieNoticePro with Google Consent Mode v2

Phase 3 complete:
- Copy CookieNoticePro library to libraries/CookieNoticePro/
- Fix bug: analytics_storage sent 'granted' instead of 'denied' on rejection
- Add Consent Mode v2 default-denied init before GTM snippet in layout-logged.php
- Fix plugin init: cookieNoticePro.init() per library docs
- Fix duplicate button label (CSS display:none for acceptBtnSettingsLabel)
- Add Bootstrap 5 compatibility reset for banner buttons
- Set regulamin link to https://bilety.brzezovka.pl/tickets/regulamin/

v0.2 Analytics & Privacy milestone complete.

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

.paul/ROADMAP.md

@@ -5,8 +5,8 @@ W najblizszej iteracji skupiamy sie na uzupelnieniu warstwy analitycznej po zaku
 
 ## Current Milestone
 **v0.2 Analytics & Privacy** (v0.2.0)
-Status: In progress
-Phases: 1 of 2 complete
+Status: Complete (2026-04-26)
+Phases: 3 of 3 complete
 
 ## Previous Milestones
 
@@ -20,7 +20,7 @@ Phases: 1 of 1 complete
 |-------|------|-------|--------|-----------|
 | 1 | Purchase Data Layer | 1 | Complete | 2026-04-19 |
 | 2 | Purchase Event Pre-Payment | 1 | Complete | 2026-04-26 |
-| 3 | Cookie Consent Banner | 1 | Not started | — |
+| 3 | Cookie Consent Banner | 1 | Complete | 2026-04-26 |
 
 ## Phase Details