feat: calibrate account capacity weekly

modelhub_submmit_api/README.md

@@ -134,8 +134,11 @@ bash run_poll.sh --dry-run
 - ModelScope list pages are paced and cached for 15 minutes. HTTP 429 responses use exponential
   backoff and `Retry-After`; pages already downloaded remain usable and the failed page is retried
   on the next cycle.
-- Every third poll cycle, a full account gets one controlled capacity probe. A successful probe
-  raises that account's persisted known limit; a capacity rejection enters cooldown.
+- Each Monday 10:00-10:59 Asia/Shanghai, the worker calibrates accounts one at a time.
+  It temporarily borrows the final five reserved positions and probes beyond the known
+  limit until explicit account-capacity rejection, then persists that account's limit and
+  resumes the normal capacity-minus-five policy. A restart in the same window does not
+  repeat accounts already calibrated; a missed window is not made up later.
 - Each `[scan]` log records the discovery stage and candidate yield. The final `[daily] wave_done`
   log includes `skip_reasons`, making empty candidate pools distinguishable from API failures.
 - At startup and every 120 poll cycles, active tasks are checked with the same recursive-size
@@ -144,7 +147,7 @@ bash run_poll.sh --dry-run
   Incomplete size/capacity evidence is never used for cancellation.
 - Models older than seven days may occupy only the current account capacity minus its final 5
   positions. The account pool enforces this per-account admission boundary atomically and updates
-  it when capacity probing discovers a higher limit. A failed active-count read makes that account
+  it when weekly calibration discovers a higher limit. A failed active-count read makes that account
   ineligible for older models while other readable accounts are still tried. Recent models may use
   all available positions. Age policy never cancels an existing waiting or running task; startup
   and scheduled cleanup remain limited to deterministic OOM and learned architecture evidence.