master fails testCompile: LineHttpSenderTokenProviderServerTest needs a client API the pinned java-questdb-client lacks

Since #7331 (chore(core): OIDC sign-in via device flow - OSS tandem, merged 2026-08-31) master does not compile its own tests against the java-questdb-client commit it pins.

Symptom

core/src/test/java/io/questdb/test/cutlass/http/line/LineHttpSenderTokenProviderServerTest.java:[79,24]
  error: cannot find symbol
  symbol:   method httpTokenProvider(()->"ROTAT[...]Get())
  location: class LineSenderBuilder

Same error at line 122.

Cause

The test calls httpTokenProvider(Supplier), but the client commit master pins provides only httpToken(String):

Why CI is affected too

core/pom.xml declares <questdb.client.version>1.3.10-SNAPSHOT</questdb.client.version>, and ci/templates/detect-local-client.yml activates -P local-client for any -SNAPSHOT version, then builds the client from the submodule at that gitlink. So CI builds the very client the failure reproduces against, rather than resolving a newer one from Maven Central.

Reproduce

1. git checkout master
2. git submodule update --init java-questdb-client
3. build and install the client module with the local-client profile, skipping tests
4. run test-compile on the core module

Fix, one of

1. Bump the java-questdb-client gitlink to a client commit that exposes httpTokenProvider, or
2. hold the core-side test until the tandem client change lands.

Found while merging master into feat/covering-index-parquet (#7562); that merge is clean and every other gate passes (main sources compile, cargo fmt/clippy clean on all three crates), so this is not specific to that branch.