CI: run full test suite via 'testOnly *' instead of cached testQuick

Root cause of CI running zero tests: sbt 2.x's `test` delegates to `testQuick`, whose
result is cached in a global store (~/.cache/sbt) that survives `clean`. On unchanged
sources it reports 'No tests to run' and skips the entire effectful, DB-backed suite —
reproduced locally (clean; test still skips). `testOnly *` runs every matching spec
unconditionally on every invocation. Point fullTest/fullCoverageTest at it; revert the
CI cache to the simpler cache:sbt (correctness no longer depends on the cache).

Author: MateuszKubuszok

.github/workflows/ci.yml

@@ -17,16 +17,7 @@ jobs:
         with:
           distribution: temurin
           java-version: '17'
-      # Cache only dependency artifacts - NOT sbt's global state. sbt 2.x's `test` is incremental (testQuick) and its
-      # "already succeeded" record survives `clean`; caching sbt state would make CI skip tests on unchanged sources
-      # ("No tests to run"), so we deliberately don't restore it and let every CI run execute the full suite.
-      - uses: actions/cache@v4
-        with:
-          path: |
-            ~/.ivy2/cache
-            ~/.cache/coursier
-          key: sbt-deps-${{ hashFiles('**/*.sbt', 'project/**') }}
-          restore-keys: sbt-deps-
+          cache: sbt
       - uses: sbt/setup-sbt@v1
       - uses: extractions/setup-just@v4
       - name: Start Docker images used in IT tests

branchtalk.sbt

@@ -485,5 +485,8 @@ val application = project
 // aliases
 
 addCommandAlias("fmt", "scalafmt ; Test/scalafmt")
-addCommandAlias("fullTest", "test")
-addCommandAlias("fullCoverageTest", "coverage ; test ; coverageReport ; coverageAggregate")
+// `test` delegates to `testQuick`, and sbt 2.x caches its result in a global store (~/.cache/sbt) that survives
+// `clean`, so on unchanged sources it reports "No tests to run" and skips the whole (effectful, DB-backed) suite.
+// `testOnly *` runs every matching spec unconditionally on every invocation, so a full run really executes.
+addCommandAlias("fullTest", "testOnly * ")
+addCommandAlias("fullCoverageTest", "coverage ; testOnly * ; coverageReport ; coverageAggregate")