ASA Go: Cache provincial-summary, hfi-stats, and tpi-stats in Redis

[conbrad]

During the same load test that led to #5780, provincial-summary, hfi-stats, and tpi-stats which are 7 of the 9-10 requests ASA Go's makes on every launch hits Postgres directly on every single call. All three are read-heavy and keyed to a specific completed SFMS run (run_type/run_datetime/for_date) that never changes once that run finishes, making them ideal candidates to cache rather than re-query.

Results are now cached in Redis (app/auto_spatial_advisory/advisory_run_stats/), keyed on the run identity so a new run naturally gets a new key with no invalidation needed, with a 1-day TTL — following the same pattern hfi/fire_centre_cache.py already uses elsewhere in the API. The Redis client is built with explicit 1s connect/socket timeouts rather than the shared create_redis() helper's untimed default, so an unreachable Redis fails fast into the existing Postgres path instead of hanging the request's event loop. latest-sfms-run-parameters deliberately stays uncached, since it's the "what's newest" endpoint and caching it would risk serving a stale answer right after a new run finishes.

Test Links:

Landing Page
MoreCast
Percentile Calculator
FireCalc
FireCalc bookmark
Auto Spatial Advisory (ASA)
HFI Calculator
SFMS Insights
Fire Watch
Weather Toolkit

[codecov]

Codecov Report

❌ Patch coverage is 99.46237% with 1 line in your changes missing coverage. Please review.
✅ Project coverage is 68.90%. Comparing base (89c4d57) to head (aadd400).

Files with missing lines	Patch %	Lines
.../auto_spatial_advisory/advisory_run_stats/stats.py	99.09%	0 Missing and 1 partial ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #5795      +/-   ##
==========================================
+ Coverage   68.71%   68.90%   +0.18%     
==========================================
  Files         385      388       +3     
  Lines       21558    21660     +102     
  Branches     2935     2937       +2     
==========================================
+ Hits        14813    14924     +111     
+ Misses       5837     5830       -7     
+ Partials      908      906       -2     

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[sonarqubecloud]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
0.0% Duplication on New Code

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