v2.3.0: Phase 1 + E1 — onboarding wizard, salary, inline edit, today card, health break, Discord webhook

Added (6 user-friendly features):
- Onboarding wizard (5 steps, forced on first launch, re-runnable from Help menu)
- Salary estimation (optional, hourly wage + overtime multiplier)
- Inline clock-in/out time editing (click label to edit)
- Today summary card (post-clockout, auto-hide on next clock-in)
- Health break reminder (continuous N-hour at desk warning)
- Discord webhook notifications (clock-in/out/health, mobile push, no server)

Database:
- break_records.break_type column ('break'/'lunch'/'dinner')
- notification_log table (dedupe + analytics)
- Auto-complete onboarding for existing users (work_records exists)

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

utils/discord_webhook.py

@@ -0,0 +1,108 @@
+"""
+Discord 웹훅 알림 (단방향 push).
+
+URL 1개로 끝. 봇 등록·서버 운영 0. 실패 시 silent (앱 동작 안 막음).
+"""
+from __future__ import annotations
+import json
+import urllib.request
+import urllib.error
+from datetime import datetime
+from typing import Optional, List
+
+# Discord embed 색상 (decimal)
+COLOR_GREEN = 0x57F287
+COLOR_BLUE = 0x5865F2
+COLOR_YELLOW = 0xFEE75C
+COLOR_PINK = 0xEB459E
+COLOR_ORANGE = 0xED4245
+
+
+def send(webhook_url: str, title: str, description: str,
+         color: int = COLOR_BLUE, fields: Optional[List[dict]] = None,
+         timeout: int = 5) -> bool:
+    """Discord 웹훅으로 embed 메시지 발송.
+
+    Args:
+        webhook_url: Discord webhook URL (https://discord.com/api/webhooks/{ID}/{TOKEN})
+        title, description: embed 본문
+        color: embed 좌측 색상 바 (10진수, 0xRRGGBB)
+        fields: [{"name": "필드명", "value": "값", "inline": True}, ...]
+        timeout: 요청 타임아웃(초)
+
+    Returns:
+        성공 시 True. URL 비었거나 네트워크/4xx/5xx 시 False.
+    """
+    if not webhook_url or not webhook_url.startswith('https://'):
+        return False
+
+    payload = {
+        "embeds": [{
+            "title": title,
+            "description": description,
+            "color": color,
+            "fields": fields or [],
+            "timestamp": datetime.utcnow().isoformat(),
+            "footer": {"text": "Clock-out Time Calculator"},
+        }]
+    }
+    data = json.dumps(payload, ensure_ascii=False).encode('utf-8')
+    req = urllib.request.Request(
+        webhook_url, data=data,
+        headers={'Content-Type': 'application/json; charset=utf-8'},
+        method='POST',
+    )
+    try:
+        with urllib.request.urlopen(req, timeout=timeout) as resp:
+            return 200 <= resp.status < 300
+    except (urllib.error.URLError, urllib.error.HTTPError, OSError, TimeoutError):
+        return False
+
+
+def send_test(webhook_url: str) -> bool:
+    """온보딩/설정에서 호출하는 테스트 메시지."""
+    return send(
+        webhook_url,
+        title="🔔 테스트 알림",
+        description="Clock-out Time Calculator의 Discord 연동이 정상 작동합니다.",
+        color=COLOR_GREEN,
+    )
+
+
+def send_clock_in(webhook_url: str, time_str: str) -> bool:
+    return send(
+        webhook_url,
+        title="🟢 출근",
+        description=f"오늘 {time_str}에 출근 기록되었습니다.",
+        color=COLOR_GREEN,
+    )
+
+
+def send_clock_out(webhook_url: str, time_str: str, total_hours: float,
+                   overtime_minutes: int, overtime_earned: int) -> bool:
+    fields = [
+        {"name": "총 근무시간", "value": f"{total_hours:.1f}시간", "inline": True},
+    ]
+    if overtime_minutes > 0:
+        fields.append({
+            "name": "연장근무",
+            "value": f"{overtime_minutes}분 → {overtime_earned}분 적립",
+            "inline": True,
+        })
+    color = COLOR_YELLOW if overtime_minutes > 0 else COLOR_BLUE
+    return send(
+        webhook_url,
+        title="✅ 퇴근",
+        description=f"오늘 {time_str}에 퇴근 처리되었습니다.",
+        color=color,
+        fields=fields,
+    )
+
+
+def send_health_warning(webhook_url: str, hours_continuous: float) -> bool:
+    return send(
+        webhook_url,
+        title="🌿 휴식 권고",
+        description=f"{hours_continuous:.1f}시간 연속 근무 중입니다.\n잠시 일어나서 스트레칭하세요.",
+        color=COLOR_PINK,
+    )