A5: Convert ForEachTest to JUnit4 with fixtures

[LSantha]

Goal

Convert ForEachTest from JUnit3 to JUnit4 with test fixtures.

Source Under Test

• File: core/src/core/org/jnode/util/ForEach.java
• Class: org.jnode.util.ForEach
• Purpose: Iteration utilities

Current State

• Test file: core/src/test/org/jnode/test/ForEachTest.java
• Type: JUnit3/Legacy
• Quality: no-fixtures (3 methods, 6 assertions)
• Requires JNode: No (host JDK runnable)

Approach

1. Convert to JUnit4
2. Add @Before/@after for test collection setup
3. Add assertions for forEach, forEachWithIndex, iterate
4. Add to CoreTestSuite
5. Verify test compiles and passes

Acceptance Criteria

• Test class compiles
• sh build.sh tests exits 0
• JUnit XML report contains the test
• QEMU boot test passes
• PR opened against master

[LSantha]

/oc Please proceed with this task.

[opencode-agent]

Created PR #504

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