Feat: AO Intelligence charts for region pages

[f3-jolt]

👋 TL;DR

Adds four new data visualizations to the region stats page — all backed by new BigQuery sub-queries — giving F3 leaders a richer picture of how each AO is performing.

🔎 Details

New charts added to region pages

Chart	Data source	Window
Unique PAX Over Time	charts (existing)	Date-filter aware
FNG Acquisition	charts (existing)	Date-filter aware
Unique Qs per AO	ao_q_depth.unique_qs	Trailing 90 days
Q Depth per AO	ao_q_depth.q_depth_pct	Trailing 90 days
Day-of-Week Attendance heatmap	ao_heatmap	Trailing 90 days

New BigQuery sub-queries in regions.ts:

• ao_heatmap — avg PAX per AO per day-of-week (Mon–Sat), trailing 90 days, first-F events only
• ao_q_depth — unique Qs ÷ total workouts per AO, trailing 90 days; used by both the Q Depth % chart and the Unique Qs count chart
• ao_pax_trend — avg PAX per AO per month for 6 months (data fetched, reserved for a future iteration)

Page layout (region):

[Unique PAX Over Time]  [FNG Acquisition]
[Unique Qs per AO]      [Q Depth per AO]
[Day-of-Week Heatmap]   [Achievements]
[Kotters]               [Upcoming Events]
[Event List]

New types added to types.ts: AOHeatmapData, AOQDepthData, AOPaxTrendData

✅ How to Test

• Navigate to any region stats page (/stats/region/<id>)
• Confirm six chart cards render: Unique PAX Over Time, FNG Acquisition, Unique Qs per AO, Q Depth per AO, Day-of-Week Attendance heatmap, Achievements
• Hover cells on the heatmap — tooltip should show AO · Day: X avg PAX (Y workouts)
• Hover bars on Q Depth — tooltip should show X% (Y Qs / Z workouts)
• Verify Q Depth bars color correctly: green ≥70%, amber 50–69%, red <50%
• Verify "No data" empty states on a region with no workout history
• Apply a date filter — Unique PAX and FNG charts should update; AO charts (fixed 90-day window) should stay unchanged

🥜 GIF