Add day-grouped timesheet with day accept and commit history

app/services.py

@@ -42,6 +42,11 @@ def derive_zed_suggestions(db: Session, device_id: str, project_slug: str, idle_
         TimeEntry.kind == "zed_inferred",
         TimeEntry.status == "suggested",
     ))
+    existing_ids = set(db.scalars(select(TimeEntry.external_id).where(
+        TimeEntry.source == "zed",
+        TimeEntry.device_id == device_id,
+        TimeEntry.project_slug == project_slug,
+    )))
 
     blocks: list[tuple[datetime, datetime, int]] = []
     start = previous = None
@@ -59,6 +64,11 @@ def derive_zed_suggestions(db: Session, device_id: str, project_slug: str, idle_
 
     for start_at, end_at, duration in blocks:
         entry_id = stable_id(device_id, project_slug, start_at.isoformat(), end_at.isoformat())
+        # Blocks whose stable ID already exists (accepted, rejected, or still
+        # suggested) must not be re-added: the unique constraint would reject
+        # the insert, and user decisions about a block must stick.
+        if entry_id in existing_ids:
+            continue
         db.add(TimeEntry(
             source="zed", device_id=device_id, external_id=entry_id, kind="zed_inferred",
             status="suggested", start_at=start_at, end_at=end_at, duration_seconds=duration,
@@ -85,3 +95,22 @@ def daily_summary(entries: list[TimeEntry]) -> dict:
         elif entry.status == "suggested":
             suggestions += entry.duration_seconds
     return {"by_day": dict(totals), "suggested_seconds": suggestions}
+
+
+def group_entries_by_day(entries: list[TimeEntry]) -> dict:
+    days: dict = defaultdict(list)
+    for entry in entries:
+        days[entry.start_at.astimezone(TZ).date()].append(entry)
+    for day_entries in days.values():
+        day_entries.sort(key=lambda item: item.start_at)
+    return dict(days)
+
+
+def group_commits_by_day(commits: list[RawEvent]) -> dict:
+    days: dict = defaultdict(list)
+    for commit in commits:
+        if commit.occurred_at is not None:
+            days[commit.occurred_at.astimezone(TZ).date()].append(commit)
+    for day_commits in days.values():
+        day_commits.sort(key=lambda item: item.occurred_at)
+    return dict(days)