fix(sensor): support VS Code and multi-IDE storage paths in ClineParser

[vschs007]

What type of PR is this? (check all applicable)

• Refactor
• Feature
• Bug Fix
• Optimization
• Documentation Update

Related issue: N/A

What changed?

• Multi-IDE path discovery: Expanded ClineParser.BASE_PATHS to discover task history across Visual Studio Code (Code), Cursor, VS Code Insiders, VSCodium, and Windsurf across macOS, Linux, and Windows.
• Multi-directory aggregation: Updated parse_all() to scan and aggregate tasks across all existing candidate directories on the endpoint, with session-level deduplication (session_id).
• Per-directory failure isolation: Inaccessible or invalid editor roots record file_read_error and do not discard sessions from healthy editors. Inaccessible input is not classified as missing input.
• Flexible initialization: Added an optional base_path argument to ClineParser.__init__, matching the constructor signature of other parsers (e.g., CopilotParser, GeminiParser).
• Explicit path compatibility: Constructor overrides and direct parser.base_path assignments restrict collection to the selected directory, including an installed editor or the initially detected path.
• Cross-platform path test fixes: Normalized path assertions in TestPlatformPathCoverage using as_posix() so that tests pass reliably on Windows and POSIX systems.
• Hermetic uninstalled test: Isolated Path.exists in test_first_candidate_used_when_none_exist so unit tests never fail when an agent happens to be installed on the local test machine.
• Unit test coverage: Added tests in TestClineParser covering custom base path overrides, multi-editor coverage in BASE_PATHS, and multi-directory task aggregation.
• Logging integration: Resolved the conflict with current main while retaining the shared sensor logger, so console levels and opt-in runtime logs apply to Cline collection.
• Documentation: Added a dedicated ### Cline (Claude Dev) documentation section to Sensor/README.md detailing default task storage paths across operating systems.

Why?

Cline (saoudrizwan.claude-dev) is primarily a Visual Studio Code extension with widespread adoption across developer environments. Previously, _CLINE_TASKS_SUFFIX was hardcoded exclusively to Cursor's global storage path (Cursor/User/globalStorage/saoudrizwan.claude-dev/tasks), leaving standard VS Code users unobserved and creating a telemetry blind spot for enterprise security monitoring.

How did you test it?

1. Unit tests: Ran the complete Sensor test suite via uv run pytest tests/ -v: 470 passed, 0 failed.
2. Multi-IDE verification: Verified test_parse_all_discovers_tasks_across_multiple_existing_editors and test_cline_base_paths_covers_multiple_editors.
3. Linting: Passed uv run ruff check adr_sensor/parsers/cline_parser.py tests/test_parsers.py with 0 errors.
4. Distribution build: Verified package packaging via uv build.
5. Post-merge validation (September 29, 2026): 527 Sensor tests passed on Python 3.9 and 527 on Python 3.12, using frozen dependencies on macOS. Added 21 synthetic regression cases for root failures before/after healthy roots, observer preservation, diagnostics, explicit overrides, deduplication, and quiet/runtime logging. An independent 12-case reproduction suite also passed. Source/test lint, changed-file formatting, package build, and pre-push validation passed.

Potential risks

Low. Changes are backward-compatible and additive. If no Cline directories exist on the host, the parser preserves historical behavior by recording an input_missing diagnostic.

[barisozbas]

LGTM. Hardened and reviewed.