feat: Phase 4 — 9 new features (v1.1)

REQ-MOB-010: BarcodeScreen.tsx — barcode scanner via react-native-camera
REQ-VIZ-001: WeeklyCalorieChart.tsx — 7-day bar chart on History screen
REQ-VIZ-002: Streak tracker — GET /meals/streak + HomeScreen badge
REQ-UX-001: Quick-add calories — POST /meals/quick-add + QuickAddScreen
REQ-UX-002: Food favourites — UserFoodMemory.favourite + toggle endpoint + FoodRow star
REQ-UX-003: GoalBanner.tsx — in-app slide-in when daily target hit
REQ-EXP-001: ExportController — GET /export/meals CSV download
REQ-WTR-001: Water tracking — WaterEntry entity + POST/GET /water + DailyDetails widget
REQ-UX-004: Daily logging reminder — HomeScreen after-18:00 banner

Also: Flyway V2 (favourite), V3 (water_entries), V4 (source constraints)
Traceability, CHANGELOG, PLAN updated after each feature

.virsaitis/backups/2026-05-18T21-35-44-534Z/skills/README.md

@@ -0,0 +1,16 @@
+# Virsaitis Skills
+
+This directory contains Copilot skill definitions for your project.
+
+## What are Skills?
+
+Skills provide specialized capabilities, domain knowledge, and refined workflows.
+Each skill folder contains a `SKILL.md` file with tested instructions for specific domains.
+
+## Creating a Skill
+
+1. Create a new folder under `.github/skills/`
+2. Add a `SKILL.md` file with frontmatter and instructions
+3. Reference the skill in your agent or instructions
+
+See the [Skills Standards](../copilot-modules/skills-standards.md) module for full details.