fix: koreksi pembulatan ke entry terbesar, filter author date ketat

- distribute_hours: simpan diff pembulatan ke entry terbesar (bukan
  terakhir) agar tidak bisa jadi 0.00h saat banyak entry
- get_commits_today: filter strict author date = today, cegah commit
  dari hari lain yg di-rebase/push masuk ke timesheet hari ini

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

daily_timesheet.py

@@ -212,6 +212,9 @@ def get_commits_today(repo_path: str, author: str, today: str) -> list[dict]:
         parts = line.split("|", 2)
         if len(parts) == 3:
             dt = datetime.strptime(parts[1], "%Y-%m-%d %H:%M")
+            # Filter ketat: pastikan author date = today (bukan commit dari hari lain yg di-rebase)
+            if dt.strftime("%Y-%m-%d") != today:
+                continue
             commits.append({
                 "hash":    parts[0],
                 "date":    dt.strftime("%Y-%m-%d"),
@@ -246,12 +249,14 @@ def commit_spans(sorted_commits: list[dict]) -> list[int]:
 
 
 def distribute_hours(weights: list[int], total: float = 8.0) -> list[float]:
-    """Pro-rata berdasarkan bobot (menit span). Sum = total. Adjustment di entry terakhir."""
+    """Pro-rata berdasarkan bobot (menit span). Sum = total. Adjustment di entry terbesar."""
     total_weight = sum(weights)
     raw = [Decimal(str(total)) * Decimal(w) / Decimal(total_weight) for w in weights]
     rounded = [float(r.quantize(Decimal("0.01"), rounding=ROUND_HALF_UP)) for r in raw]
     diff = round(total - sum(rounded), 2)
-    rounded[-1] = round(rounded[-1] + diff, 2)
+    # Terapkan koreksi ke entry terbesar agar tidak bisa jadi 0
+    largest_idx = rounded.index(max(rounded))
+    rounded[largest_idx] = round(rounded[largest_idx] + diff, 2)
     return rounded