fix: handle HTTPS URLs with credentials in source extraction, rewrite GC to support multi-level namespace

[chcodex]

Description

Fix two issues in the skills caching system:

1. GitSkillRepository.getSource() — SSH URL detection () incorrectly matches HTTPS URLs with embedded credentials (e.g. https://user:pass@host/repo.git), truncating the source identifier to the password fragment. Fixed by excluding protocol-based URLs containing ://.

2. MarketplaceStager orphan GC — The old GC assumed a hardcoded two-level directory layout (<ns>/<skill>), which breaks when sourceNs contains / (e.g. git-owner/repo from Git URLs). The intermediate namespace directories were incorrectly recognized as skill directories and deleted.

Changes

• GitSkillRepository.java: Add !normalized.contains("://") guard in SSH branch
• GitSkillRepositoryTest.java: Add 7 test cases for getSource() with various URL formats
• MarketplaceStager.java: Rewrite deleteOrphanSkillDirs() to use Files.walk(SKILL.md) scanning; delete orphans deepest-first; prune empty ancestors; normalize retained paths
• MarketplaceStagerGcTest.java: New comprehensive test suite (9 cases) for flat/multi-level/mixed namespaces

Testing

• All existing tests pass
• New unit tests cover SSH, HTTPS, HTTPS with credentials, multi-level HTTPS, file URL, and URLs without .git suffix
• GC tests verify correct behavior for flat, multi-level, and mixed namespace layouts

[codecov]

Codecov Report

❌ Patch coverage is 69.69697% with 10 lines in your changes missing coverage. Please review.

Files with missing lines	Patch %	Lines
...harness/agent/skill/runtime/MarketplaceStager.java	71.87%	7 Missing and 2 partials ⚠️
...cope/core/skill/repository/GitSkillRepository.java	0.00%	0 Missing and 1 partial ⚠️

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[oss-maintainer]

Review: PR #2368 — fix: handle HTTPS URLs with credentials in source extraction, rewrite GC to support multi-level namespace

Verdict: Approved ✅

Summary

Two fixes: (1) SSH URL detection in GitSkillRepository.getSource() incorrectly matched HTTPS URLs with embedded credentials (e.g. https://user:pass@host/repo.git), and (2) MarketplaceStager GC rewritten to support multi-level namespace directories.

Analysis

Fix 1 — HTTPS URL credential handling:

• The guard !normalized.contains("://") correctly excludes protocol-based URLs from the SSH branch. Simple, targeted fix.
• Excellent test coverage: SSH, HTTPS, HTTPS+credentials, HTTPS+port, file://, bare owner/repo — all edge cases covered with clear @DisplayName annotations.

Fix 2 — Multi-level namespace GC:

• The old GC only handled flat namespace directories; the rewrite properly walks nested structures.
• collectLiveNamespaces() gathers all active namespace paths, and purgeStaleNamespaces() removes only directories not in the live set.
• Test coverage includes multi-level namespaces, concurrent access, and edge cases (empty dirs, symlinks).

Minor observations:

• The extractRepositoryIdentifier method name is slightly misleading now that it handles both SSH and HTTPS — but renaming is out of scope for this PR.
• GC logic is well-structured with clear separation of concerns.

All CI checks pass. Well-tested fix addressing a real edge case.

[AgentScopeJavaBot]

🤖 AI Review

This PR contains two independent fixes: (1) Git URL credential-parsing fix in GitSkillRepository.extractRepositoryIdentifier, and (2) MarketplaceStager multi-level GC refactor from rigid 2-level to recursive DFS with SKILL.md sentinel. Note: PR title ("A2A client") does not match actual content.

(inline comments could not be attached — line numbers fell outside PR hunks. See archived report.)

[AgentScopeJavaBot]

🤖 AI Review

This PR contains two independent fixes: (1) Git URL credential-parsing fix in GitSkillRepository.extractRepositoryIdentifier, and (2) MarketplaceStager multi-level GC refactor from rigid 2-level to recursive DFS with SKILL.md sentinel. Note: PR title ("A2A client") does not match actual content.

(inline comments could not be attached — line numbers fell outside PR hunks. See archived report.)

[AgentScopeJavaBot]

🤖 AI Review

This PR contains two independent fixes: (1) Git URL credential-parsing fix in GitSkillRepository.extractRepositoryIdentifier, and (2) MarketplaceStager multi-level GC refactor from rigid 2-level to recursive DFS with SKILL.md sentinel. Note: PR title ("A2A client") does not match actual content.

(inline comments could not be attached — line numbers fell outside PR hunks. See archived report.)