Throw StackOverflowError from initMethodStack; add StackOverflowError class and native test

[shai-almog]

Motivation

• Prevent an assertion crash when the VM call stack is exhausted by throwing a proper StackOverflowError so Java code can catch and recover.
• Provide the missing java.lang.StackOverflowError class so the VM can instantiate and throw the error.
• Add an integration test to validate that a stack overflow is thrown and that the VM can continue execution after it is caught.

Description

• Added vm/JavaAPI/src/java/lang/StackOverflowError.java implementing java.lang.VirtualMachineError.
• Updated vm/ByteCodeTranslator/src/nativeMethods.m to include the StackOverflowError header and change initMethodStack to check callStackOffset and call throwException(threadStateData, __NEW_INSTANCE_java_lang_StackOverflowError(threadStateData)) and return instead of asserting.
• Added vm/tests/src/test/java/com/codename1/tools/translator/StackOverflowIntegrationTest.java, a native integration test that compiles a small app which triggers a stack overflow, verifies the StackOverflowError was thrown/caught (STACK_OVERFLOW_OK) and that normal execution (a recursive sum) still works after recovery (RECOVERY_OK:7).

Testing

• No automated tests were executed as part of this change.
• A new automated integration test StackOverflowIntegrationTest was added under vm/tests and will run as part of the VM test suite when the test goals are invoked.
• The change is limited to VM native code, the JavaAPI, and an integration test; CI or a local Maven test run should be used to validate the new test in the full environment.

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Codex Task

[github-actions]

✅ Continuous Quality Report

Test & Coverage

• ✅ Tests: 2283 total, 0 failed, 0 skipped
• 📊 Line coverage: 52.80% [HTML preview] [Download]
  • Lowest covered classes
    • com.codename1.io.rest.RequestBuilder$FetchAsPropertyListActionListener – 0.00%
    • com.codename1.io.rest.RequestBuilder$FetchAsPropertiesActionListener – 0.00%
    • com.codename1.ui.Display$EdtException – 0.00%
    • com.codename1.ui.BrowserWindow$BrowserForm – 0.00%
    • com.codename1.ui.plaf.CSSBorder$LinearGradient – 0.00%
    • com.codename1.io.rest.RequestBuilder$GetAsStringAsyncImplActionListener – 0.00%
    • com.codename1.io.rest.RequestBuilder$GetAsJsonMapActionListener – 0.00%
    • com.codename1.payment.Purchase$SynchronizeReceiptsSyncRunnable – 0.00%
    • com.codename1.io.rest.RequestBuilder$GetAsBytesAsyncImplActionListener – 0.00%
    • com.codename1.io.rest.RequestBuilder$FetchAsJsonMapActionListener – 0.00%

Static Analysis

• ✅ SpotBugs: 0 findings (no issues) [Report archive]
• ✅ PMD: 0 findings (no issues) [Report archive]
• ✅ Checkstyle: 0 findings (no issues) [Report archive]

Generated automatically by the PR CI workflow.

[shai-almog]

Compared 30 screenshots: 30 matched.
✅ Native Android screenshot tests passed.

Benchmark Results

• VM Translation Time: 417 seconds
• Compilation Time: 357 seconds

Detailed Performance Metrics

Metric	Duration
Build Time Statistics
Setup & Unzip	45843 ms
Extract Extensions	27 ms
Google Services Setup	2 ms
Scan Classes	771 ms
Extract Libs	1098 ms
Inject Build Hints	46 ms
Generate Unit Tests	3 ms
Generate Stubs	1318 ms
Compile Stubs	3127 ms
Generate Icons	1788 ms
Prepare ParparVM	472 ms
ParparVM Execution	234588 ms
Post-VM Setup	232 ms
CocoaPods	5035 ms
Finalize	29 ms
Total Time	294380 msMaven Overhead : 123000 ms
CocoaPods Install (Script)	2000 ms
Simulator Boot	129000 ms
Simulator Boot (Run)	8000 ms
App Install	22000 ms
App Launch	6000 ms
Test Execution	192000 ms