Complete dmramfs implementation and update CI for RAM filesystem

[Copilot]

• Analyze repository structure and understand existing code
• Understand dmfsi interface requirements
• Review fs_tester test suite requirements
• Complete dmramfs implementation
• Update CI workflow for dmramfs
• Update release workflow for dmramfs
• Update README documentation
• Build passes locally
• Run code review and address comments
• Run codeql checker - no alerts
• Fix segfault in tests:
  • Fix dmlist_insert return value check (returns bool, not error code)
  • Handle empty directory component in paths like /test.txt
• Add dmlist dependency info to README
• Document known fclose error messages issue

Fixes: The tests were crashing because:

1. dmlist_insert returns true on success but the code was checking != 0 expecting error codes
2. Paths like /test.txt created empty directory components that weren't handled

All 13 fs_tester tests now pass.

Known Issue: The [ERROR] Failed to close file messages appear due to a return value convention mismatch between dmvfs (expects boolean) and DMFSI (uses 0 for success). Tests pass correctly despite these messages.

Original prompt

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This section details on the original issue you should resolve

<issue_title>Dokończyć implementację dmramfs i zaktualizować CI</issue_title>
<issue_description>Celem tego zadania jest dokończenie implementacji dmramfs, zaktualizowanie CI (był on skopiowany z innego systemu plików - dmffs). Napisanie dokumentacji oraz odpalenie testów fs_tester z repozytorium https://github.com/choco-technologies/dmvfs

</issue_description>

Comments on the Issue (you are @copilot in this section)

• Fixes Dokończyć implementację dmramfs i zaktualizować CI #2

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[JohnAmadis]

@copilot zacommitowałeś pliki, które są generowane i pliki binarne - usuń je proszę, zacommituj usunięcie, a następnie dodaj do gitignore

[Copilot]

@copilot zacommitowałeś pliki, które są generowane i pliki binarne - usuń je proszę, zacommituj usunięcie, a następnie dodaj do gitignore

The codeql build artifacts were already removed in commit f78cd47 and .gitignore was updated to prevent this from happening again. The _codeql_build_dir/ and _codeql_detected_source_root are now properly ignored.

[JohnAmadis]

@copilot testy crashują - jest jakiś segmentation fault na CI:

Running filesystem tests for dmramfs...
Segmentation fault (core dumped)

[Copilot]

@copilot testy crashują - jest jakiś segmentation fault na CI:

...

Fixed in commit 27e80e9. The issues were:

1. dmlist_insert returns bool (true=success) but the code was checking != 0 expecting error codes
2. Paths like /test.txt created empty directory components in dmfsi_path_create that weren't handled

All 13 fs_tester tests now pass.

[JohnAmadis]

@copilot

[JohnAmadis]

Dodaj jeszcze informacje, że moduł ten wymaga biblioteki systemowej dmlist

Oraz sprawdź czy to normalne że fs_tester pomimo przechodzenia testów drukuje błąd o problemach z zamknięciem pliku

[Copilot]

Added the dmlist dependency information in commit 73a3d16.

Regarding the fclose errors: they appear because dmvfs checks if (!fclose_func(...)) expecting boolean (non-zero = success), but DMFSI convention uses 0 (DMFSI_OK) for success. This is a mismatch in dmvfs, not dmramfs. The file operations work correctly - tests pass because the actual cleanup still happens. I documented this in the "Known Issues" section.