[tae898]

Part of #19: the group "JRE module trim, Jackson/snappy/commons-math3 handling, jar closure and payload tests". It comes after #11, #12 and #16, which are merged. The Studio jar exclusion is #20 and is not touched here.

Changes

1. JRE module trim (Trim the bundled JRE: drop java.desktop, jdk.jfr, java.compiler and strip native libraries (-13 MB per wheel) humemai/arcadedb-embedded-python#452, aebf4373b5). jdeps names java.desktop, jdk.jfr and java.compiler because of optional users (JTS awt, Jackson and snakeyaml java.beans, an unused JFR reporter, agrona's code generator), so the jlink runtime carried modules that no code path of the wheel reaches. New scripts/jre_module_exclusions.txt lists the modules to keep out. scripts/Dockerfile.build and scripts/build-native.sh remove them from the jdeps answer before jlink, stop the build when jdeps finds nothing (the java.se fallback would bring the modules back), and fail the build when one is still in java --list-modules afterwards (a module that another module requires comes back that way). The Linux build also strips the runtime's .so files.
2. Jackson, snappy-java and commons-math3 ship again (Ship Jackson, snappy-java and commons-math3; polyglot engine off by default; jar closure test humemai/arcadedb-embedded-python#409, bc93f97a67). scripts/jar_exclusions.txt excluded them as "embedded-unused", checked with the embedded suite only. Server mode reaches them: swagger-core builds GET /api/v1/openapi.json with Jackson, the Prometheus remote read and write routes and snappy-compressed bodies need snappy-java, and jvector's ScoreTracker$TwoPhaseTracker needs commons-math3. The file now says so beside the exclusion list.
3. Jar closure test (#409 and #452). tests/test_jar_closure.py reads the class files of the shipped jars and fails on a reference into a package that no shipped jar or JDK module provides, unless an allow-list entry gives a reason. The second half does the same against the packages of the running runtime for the removed modules, checks the runtime lacks them, and runs Jackson and the YAML mapper on it.
4. Server payload tests (#409). tests/test_server_packaging.py gains test_openapi_json_is_served and test_snappy_compressed_bodies_are_decoded.
5. README package-contents numbers, from the wheel measured below.

Measured

Both wheels: linux/amd64, Python 3.12, built with scripts/build.sh from the same engine jars (extracted once from the arcadedata/arcadedb:26.11.1-SNAPSHOT image), baseline is origin/main f042fd3.

	before (origin/main)	after (this PR)
wheel, compressed	73,973,014 bytes	67,547,260 bytes
wheel, uncompressed	103,089,346 bytes	90,229,775 bytes
bundled JRE, uncompressed	66,204,657 bytes	46,097,654 bytes
jars	65, 36,600,156 bytes	72, 43,850,849 bytes

The JRE shrinks by 20,107,003 bytes uncompressed and the jars grow by 7 files, so the wheel is 6,425,754 bytes smaller overall. For comparison, the source commits recorded "80.8 MB to 67.7 MB" (#452) and "about 6.7 MB" for the three jars (#409), on their own tree.

Tests

• Smoke on both wheels: import arcadedb_embedded, create a database, SQL count, Cypher MATCH, an LSM_VECTOR index and vectorNeighbors: OK.
• Against the after wheel: test_jar_closure.py, test_server_packaging.py, test_build_scripts.py, test_jar_provenance.py and test_wheel_size.py pass. After removing the polyglot test (below), test_jar_closure.py alone gives 8 passed.
• The same tests against the before wheel give 8 failed, 26 passed: the new tests catch the old exclusions and the old runtime.

Not included

• test_polyglot_engine_is_off_while_no_graalvm_language_ships from test_jar_closure.py moves with the runtime-fixes PR, which carries the jvm.py default (-Darcadedb.polyglotEngineEnabled=false) it checks.
• tests/test_jvm_payload.py: it imports benchmarks/experiments/jvm_payload_check.py, which only exists in the humemai fork, so it stays there.
• The docs edits of #409 and #452: the target has no matching pages yet (Antora pages are in docs: Antora component arcadedb-python with the first slice of pages #23 and docs: 'Which package for which mode' page; link the main docs instead of re-explaining #25).
• The Studio jar exclusion (fix: licence guard for the wheels: fail on ApexCharts, ship Studio from 26.11.1 (ECharts) #20).
• macOS and Windows builds: build-native.sh has the same change and passes bash -n, but I built and ran only linux/amd64.

🤖 Generated with Claude Code

[tae898]

No review needed from you for this one, @robfrank: it is a build trim (JRE modules, jars; wheel 73.97 MB to 67.55 MB) and CI is green. I will merge it after 24 hours unless you object here. Sorry for the earlier ping.

[robfrank]

LGTM