Fix session timeline query, bump to 0.2.1

getSessionTimeline() grouped/ordered by a bare `bucket` identifier,
assuming SQLite would resolve it against the SELECT list's alias -
it doesn't in this generated query, so every /sessions/:id page and
/api/stats/sessions/:id/timeline request failed with "no such column:
bucket". Fixed by reusing the actual bucket expression object in
groupBy/orderBy instead of referencing it by name. Verified against a
seeded session - previously every request, now correct bucketed data.

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01W8WkFF5ppURBAB918593Eb

lib/db/queries/stats.ts

@@ -37,9 +37,15 @@ export async function getSessionsSummary() {
 }
 
 export async function getSessionTimeline(playSessionId: number, bucketMs = 1000) {
+  // Reuse the same expression object (not a `sql`bucket`` alias reference)
+  // in groupBy/orderBy - drizzle doesn't emit a literal `AS bucket` that
+  // SQLite's GROUP BY/ORDER BY could resolve a bare "bucket" identifier
+  // against, so referencing it by name causes "no such column: bucket".
+  const bucket = sql<number>`(${sessionEvents.tsMs} / ${bucketMs}) * ${bucketMs}`;
+
   return db
     .select({
-      bucket: sql<number>`(${sessionEvents.tsMs} / ${bucketMs}) * ${bucketMs}`,
+      bucket,
       sessionDeviceId: sessionEvents.sessionDeviceId,
       slotLabel: sessionDevices.slotLabel,
       avgValue: sql<number>`avg(${sessionEvents.value})`,
@@ -48,8 +54,8 @@ export async function getSessionTimeline(playSessionId: number, bucketMs = 1000)
     .from(sessionEvents)
     .innerJoin(sessionDevices, eq(sessionEvents.sessionDeviceId, sessionDevices.id))
     .where(and(eq(sessionEvents.playSessionId, playSessionId), ne(sessionEvents.commandType, "stop")))
-    .groupBy(sql`bucket`, sessionEvents.sessionDeviceId)
-    .orderBy(sql`bucket`);
+    .groupBy(bucket, sessionEvents.sessionDeviceId)
+    .orderBy(bucket);
 }
 
 export async function getDeviceUsageStats() {