[cbuild2cmake] Improve zephyr module generation

[brondani]

Fixes

• Add option to convert clayer to zephyr module devtools#2429

Changes

• Kconfig source line simplified
• Deterministic pack ordering, making pack-dependent output ordering stable across runs
• Update test cases

Checklist

• 🤖 This change is covered by unit tests (if applicable).
• 🤹 Manual testing has been performed (if necessary).
• 🛡️ Security impacts have been considered (if relevant).
• 📖 Documentation updates are complete (if required).
• 🧠 Third-party dependencies and TPIP updated (if required).

[github-actions]

Dependency Review

✅ No vulnerabilities or license issues or OpenSSF Scorecard issues found.

Scanned Files

None

[qltysh]

Coverage Impact

This PR will not change total coverage.

Modified Files with Diff Coverage (1)

Rating	File	% Diff	Uncovered Line #s
	pkg/maker/zephyr.go	100.0%
	Total	100.0%

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[github-actions]

Test Results

  6 files  ±0   18 suites  ±0   1s ⏱️ -1s
109 tests ±0  109 ✅ ±0  0 💤 ±0  0 ❌ ±0 
654 runs  ±0  654 ✅ ±0  0 💤 ±0  0 ❌ ±0 

Results for commit d28d688. ± Comparison against base commit 2bf2069.

♻️ This comment has been updated with latest results.

[Copilot]

Pull request overview

Reworks zephyr module file generation so that output paths are anchored to the current working directory (where generation runs) rather than the solution input root, making output deterministic and workspace-driven. Also simplifies the Kconfig Source: field and stabilizes pack ordering in the generated sources.cmake.

Changes:

• Introduce ZephyrMaker.BaseDir (set from os.Getwd()) and replace m.SolutionRoot with it in all output path computations (module.yml, Kconfig, CMakeLists.txt, sources.cmake, copied constructed files, and pack-path relative computation).
• Replace the relative Source: path in Kconfig with just filepath.Base(zephyrLayer.Clayer.File).
• Iterate PackPaths via sortedmap.AsSortedMap to produce deterministic pack ordering in the generated CMake.

Reviewed changes

Copilot reviewed 2 out of 2 changed files in this pull request and generated 1 comment.

File	Description
pkg/maker/zephyr.go	Adds BaseDir, switches output anchoring from SolutionRoot to BaseDir, simplifies Kconfig source line, and sorts pack iteration.
pkg/maker/zephyr_test.go	Sets BaseDir in unit tests, updates expected Kconfig Source: value, adds an os.Chdir to the integration test, and adds a pack-ordering assertion.

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[soumeh01]

LGTM