Add Logging to Diagnose Flaky CI PostgreSQL Integration Test

[ffranr]

I observed flakiness in the CI PostgreSQL integration tests. Here's an example of a failure: https://github.com/lightninglabs/taproot-assets/actions/runs/12827900128/attempts/1?pr=1307

The issue occurred around commit ffef906.

This might be happening because proofs are being transferred manually before the tapd state machine has a chance to process them. Alternatively, it could be due to tapd returning an error in the event stream with an out-of-order send state, realizing it cannot transfer the proofs that haven't yet been manually transferred.

To address this, I've added additional logging to help diagnose the issue if the flakiness occurs again.

2025-01-17T11:23:01.4314022Z     assertions.go:1023: 
2025-01-17T11:23:01.4314648Z         	Error Trace:	/home/runner/work/taproot-assets/taproot-assets/itest/assertions.go:1023
2025-01-17T11:23:01.4315710Z         	            				/home/runner/work/taproot-assets/taproot-assets/itest/psbt_test.go:1389
2025-01-17T11:23:01.4316730Z         	            				/home/runner/work/taproot-assets/taproot-assets/itest/test_harness.go:159
2025-01-17T11:23:01.4317786Z         	            				/home/runner/work/taproot-assets/taproot-assets/itest/integration_test.go:94
2025-01-17T11:23:01.4318729Z         	Error:      	Not equal: 
2025-01-17T11:23:01.4319629Z         	            	expected: "SendStateTransferProofs"
2025-01-17T11:23:01.4320322Z         	            	actual  : "SendStateComplete"
2025-01-17T11:23:01.4320658Z         	            	
2025-01-17T11:23:01.4320936Z         	            	Diff:
2025-01-17T11:23:01.4321294Z         	            	--- Expected
2025-01-17T11:23:01.4321631Z         	            	+++ Actual
2025-01-17T11:23:01.4322052Z         	            	@@ -1 +1 @@
2025-01-17T11:23:01.4322715Z         	            	-SendStateTransferProofs
2025-01-17T11:23:01.4323204Z         	            	+SendStateComplete
2025-01-17T11:23:01.4332764Z         	Test:       	TestTaprootAssetsDaemon/psbt_multi_send
2025-01-17T11:23:01.4333445Z 2025-01-17 11:23:01.317 [INF] TSVR: Stopping Main Server

Full log file: 4_run itest.txt

[coveralls]

Pull Request Test Coverage Report for Build 12829211327

Details

• 0 of 9 (0.0%) changed or added relevant lines in 1 file are covered.
• 26 unchanged lines in 6 files lost coverage.
• Overall coverage decreased (-0.02%) to 40.816%

---

Changes Missing Coverage	Covered Lines	Changed/Added Lines	%
itest/assertions.go	0	9	0.0%

Files with Coverage Reduction	New Missed Lines	%
itest/assertions.go	1	0.0%
fn/option.go	3	43.3%
tapgarden/caretaker.go	4	68.5%
tapchannel/aux_leaf_signer.go	5	43.08%
asset/mock.go	6	91.84%
asset/asset.go	7	76.84%

Totals
Change from base Build 12825362300:	-0.02%
Covered Lines:	26642
Relevant Lines:	65274

---

💛 - Coveralls

[GeorgeTsagk]

Lgtm 🌟