ctbk update: rebuild rides pyramids (v1/v2/v3) each new month

`update.sh` (unused by ci.yml — legacy) already had normalize/consolidate/
aggregate/spj/sm steps. `ctbk update` (the CLI wired into
`.github/workflows/ci.yml`) mirrored those but omitted the rides-pyramid
rebuild — so /api/rides-{v1,v2,v3} kept serving up-through-prev-month data
while the normalized parquets and aggregates advanced.

Adds `ctbk rides-v1-build -v {v1,v2,v3}` invocations after `spj`, covering
`[prev_month, current]` for all tiers (1h base + 10 derived). Range
includes prev month because start-anchored /1h shards read
`normalized[ym] + normalized[ym+1]` — when prev month was originally
processed, the current month's normalized parquet didn't exist, so
rides that started in prev but ended in current were dropped; rebuilding
the prev-month shard captures them now that the current normalized
parquet exists.

Derived tiers span multi-month (1mo-shard cadences for /3h,/6h,/12h in
v1; broader coverage in v2/v3) or all-time — always overwrite so they
fold in the new data.

Verified via `ctbk update -n -S -W 202606`: emits 3 variants × 11 builds
= 33 invocations targeting `[2026-05, 2026-06]`. Manual backfill for
202605+202606 already run before this commit.

Author: ryan-williams

ctbk/update.py

@@ -60,6 +60,24 @@ def ctbk_run(*args):
     err(f"--- Station pair JSONs ---")
     ctbk_run('spj', 'create', ym)
 
+    # Rebuild rides pyramids (v1/v2/v3) that back /api/rides-{v1,v2,v3}.
+    # Range = prev-month → current: rebuilding prev month's /1h start-anchored
+    # shard picks up rides that started in prev but ended in current (dropped
+    # previously because the current month's normalized parquet didn't exist).
+    # Derived tiers span multi-month or all-time, so `-O` (overwrite) is
+    # required to fold in the new /1h data.
+    err(f"--- Rides pyramids (v1/v2/v3) ---")
+    yyyy, mm = ym[:4], ym[4:]
+    ym_new = f"{yyyy}-{mm}"
+    if mm == '01':
+        ym_prev = f"{int(yyyy) - 1}-12"
+    else:
+        ym_prev = f"{yyyy}-{int(mm) - 1:02d}"
+    for v in ('v1', 'v2', 'v3'):
+        ctbk_run('rides-v1-build', '-v', v, '-f', ym_prev, '-T', ym_new)
+        for t in ('3h', '6h', '12h', '1d', '3d', '7d', '14d', '1mo', '3mo', '1y'):
+            ctbk_run('rides-v1-build', '-v', v, '-f', ym_prev, '-T', ym_new, '-t', t, '-O')
+
     if not no_www:
         err(f"--- WWW assets ---")
         run('node', 'www/scripts/gen-station-urls.js', dry_run=dry_run)