Add shared Postgres nonce queue for cross-repo transaction serialization

[sparrowDom]

Both origin-dollar and arm-oeth cron containers use the same KMS signer, risking nonce collisions when transactions are sent concurrently.

Functionality:

• This adds postgres backed nonce lock, so different processes don't have nonce race conditions

• Timeout mechanism added and configured via NONCE_QUEUE_LOCK_TIMEOUT_MS. If process is waiting for longer than this configuration the process exits

• add per chain gas price limit

• functionality to repeat failed brodcasts is added

• functionality to re-broadcast a transaction with a higher gas price is added

• nonceQueue.ts: withNonceLock + wrapWithNonceQueue signer wrapper

• action.ts: conditionally wraps signer when DATABASE_URL is set

• docker-compose.yml: adds postgres service for local dev

• cron-supervisor.ts: pool cleanup on shutdown

• Includes integration tests verifying lock serialization

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 49.19%. Comparing base (f42b623) to head (340c42a).
⚠️ Report is 59 commits behind head on sparrowDom/automated-actions-lite.

Additional details and impacted files

@@                          Coverage Diff                          @@
##           sparrowDom/automated-actions-lite    #2876      +/-   ##
=====================================================================
+ Coverage                              48.21%   49.19%   +0.98%     
=====================================================================
  Files                                    112      112              
  Lines                                   4835     4844       +9     
  Branches                                1338     1343       +5     
=====================================================================
+ Hits                                    2331     2383      +52     
+ Misses                                  2500     2457      -43     
  Partials                                   4        4              

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