Raise the shared result-storage limit to 9 GB

STORAGE_LIMIT_GB now defaults to 9 (all testers together), still under R2's
free 10 GB.

.env.example

@@ -68,7 +68,7 @@ ADMIN_TESTERS=                    # comma-separated tester names who see the tea
 MONTHLY_CREDIT_LIMIT_USD=29.98    # the Modal credit for the month; 0 = no limit
 COMPUTE_TESTERS=4                 # the credit is split equally: 29.98 / 4 = $7.495 per tester
 # COMPUTE_PER_TESTER_USD=         # set to override the equal share
-STORAGE_LIMIT_GB=8                # new jobs are refused while the R2 bucket holds more (free tier: 10 GB)
+STORAGE_LIMIT_GB=9                # all testers together; new jobs wait while R2 holds more (free tier: 10 GB)
 # JOB_PRICES=t4=0.00019,l4=0.00025,cpu=0.00004,runpod=0.00031   # USD per second of container time
 # JOB_OVERHEAD_S=45               # billed start-up + idle seconds added to each job
 

README.md

@@ -214,7 +214,7 @@ for download (it opens in any Foxglove app).
 5. **Spend limit**: every job's cost is estimated from its run time (`JOB_PRICES`, `JOB_OVERHEAD_S`). A new job is
    refused with HTTP 402 unless its worst case still fits in the tester's equal share and in
    `MONTHLY_CREDIT_LIMIT_USD` (default $29.98; see *GPU budget* above); everything else keeps working. Likewise, while the R2 bucket holds more than `STORAGE_LIMIT_GB`
-   (default 8, under R2's free 10 GB) new jobs are refused with HTTP 507 until old files expire. The estimate is not Modal's bill, so also set a budget
+   (default 9 GB for all testers together, under R2's free 10 GB) new jobs are refused with HTTP 507 until old files expire. The estimate is not Modal's bill, so also set a budget
    or usage alert in Modal's workspace settings (*Usage and Billing*). On RunPod, set a spend notification.
 
 `GET /health` shows `"runs_enabled": true` and the backend once it and R2 are configured. Otherwise `/simulate/run` answers

api/config.py

@@ -142,7 +142,7 @@ def get_settings() -> Settings:
         monthly_credit_usd=float(_env("MONTHLY_CREDIT_LIMIT_USD", "29.98")),
         compute_testers=int(_env("COMPUTE_TESTERS", "4")),
         compute_per_tester_usd=float(_env("COMPUTE_PER_TESTER_USD", "0")),
-        storage_limit_gb=float(_env("STORAGE_LIMIT_GB", "8")),
+        storage_limit_gb=float(_env("STORAGE_LIMIT_GB", "9")),
         job_prices=_prices(_env("JOB_PRICES", "")),
         job_overhead_s=float(_env("JOB_OVERHEAD_S", "45")),
         isaac_daily_limit=int(_env("ISAAC_DAILY_LIMIT", "10")),