fix(windows): Windows platform stabilization improvements (#378)

* chore: bump version to 7.3.6 in package.json

* Enhance worker readiness checks and MCP connection handling

- Updated health check endpoint to /api/readiness for better initialization tracking.
- Increased timeout for health checks and worker startup retries, especially for Windows.
- Added initialization flags to track MCP readiness and overall worker initialization status.
- Implemented a timeout guard for MCP connection to prevent hanging.
- Adjusted logging to reflect readiness state and errors more accurately.

* fix(windows): use Bun PATH detection in worker wrapper

Phase 2/8: Fix Bun PATH Detection in Worker Wrapper

- Import getBunPath() in worker-wrapper.ts for Bun detection
- Add Bun path resolution before spawning inner worker process
- Update spawn call to use detected Bun path instead of process.execPath
- Add logging to bun-path.ts when PATH detection succeeds
- Add logging when fallback paths are used
- Add Windows-specific validation for .exe extension
- Log warning with searched paths when Bun not found
- Fail fast with clear error message if Bun cannot be detected

This ensures worker-wrapper uses the correct Bun executable on Windows
even when Bun is not in PATH, fixing issue #371 where users reported
"Bun not in PATH" errors despite Bun being installed.

Addresses: #371

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Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>

* fix(windows): standardize child process spawning with windowsHide

Phase 3/8: Standardize Child Process Spawning (Windows)

Changes:
- Added windowsHide flag to ChromaSync MCP subprocess spawn
- Added Windows-specific process tracking (childPid) in ChromaSync
- Force-kill subprocess on Windows before closing transport to prevent zombie processes
- Updated cleanupOrphanedProcesses() to support Windows using PowerShell Get-CimInstance
- Use taskkill /T /F for proper process tree cleanup on Windows
- Audited BranchManager - confirmed windowsHide already present on all spawn calls

This prevents PowerShell windows from appearing during ChromaSync operations
and ensures proper cleanup of subprocess trees on Windows.

Addresses: #363, #361, #367, #371, #373, #374

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Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>

* fix(windows): enhance socket cleanup with recursive process tree management

Phase 4/8: Enhanced Socket Cleanup & Process Tree Management

Changes:
- Added recursive process tree enumeration in worker-wrapper.ts for Windows
- Enhanced killInner() to enumerate all descendants before killing
- Added fallback individual process kill if taskkill /T fails
- Added 10s timeout to ChromaSync.close() in DatabaseManager to prevent hangs
- Force nullify ChromaSync even on close failure to prevent resource leaks
- Improved logging to show full process tree during cleanup

This ensures complete cleanup of all child processes (ChromaSync MCP subprocess,
Python processes, etc.) preventing socket leaks and CLOSE_WAIT states.

Addresses: #363, #361

* fix(windows): consolidate project name extraction with drive root handling

Phase 5/8: Project Name Extraction Consolidation

- Created shared getProjectName() utility in src/utils/project-name.ts
- Handles edge case: drive roots (C:\, J:\) now return "drive-X" format
- Handles edge case: null/undefined/empty cwd now returns "unknown-project"
- Fixed missing null check bug in new-hook.ts
- Replaced duplicated path.basename(cwd) logic in:
  - src/hooks/context-hook.ts
  - src/hooks/new-hook.ts
  - src/services/context-generator.ts

Addresses: #374

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Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>

* fix(windows): increase timeouts and improve error messages

Phase 6/8: Increase Timeouts & Improve Error Messages

- Enhanced logger.ts with platform prefix (WIN32/DARWIN) and PID in all logs
- Added comprehensive Windows troubleshooting to ProcessManager error messages
- Enhanced Bun detection error message with Windows-specific troubleshooting
- All error messages now include GitHub issue numbers and docs links
- Windows timeout already increased to 2.0x multiplier in previous phases

Changes:
- src/utils/logger.ts: Added platform prefix and PID to all log output
- src/services/process/ProcessManager.ts: Enhanced error messages with troubleshooting steps
- src/utils/bun-path.ts: Added Windows-specific Bun detection error guidance

Addresses: #363, #361, #367, #371, #373, #374

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Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>

* fix(windows): add comprehensive Windows CI testing

Phase 7/8: Add Windows CI Testing

- Create automated Windows testing workflow
- Test worker startup/shutdown cycles
- Verify Bun PATH detection on Windows
- Test rapid restart scenarios
- Validate port cleanup after shutdown
- Check for zombie processes
- Run on all pushes and PRs to main/fix/feature branches

Addresses: #363, #361, #367, #371, #373, #374

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* ci(windows): remove build steps from Windows CI workflow

Build files are already included in the plugin folder, so npm install
and npm run build are unnecessary steps in the CI workflow.

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* revert: remove Windows CI workflow

The CI workflow cannot be properly implemented in the current architecture
due to limitations in testing the worker service in CI environments.

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* security: add PID validation and improve ChromaSync timeout handling

Address critical security and reliability issues identified in PR review:

**Security Fixes:**
- Add PID validation before all PowerShell/taskkill command execution
- Validate PIDs are positive integers to prevent command injection
- Apply validation in worker-wrapper.ts, worker-service.ts, and ChromaSync.ts

**Reliability Improvements:**
- Add timeout handling to ChromaSync client.close() (10s timeout)
- Add timeout handling to ChromaSync transport.close() (5s timeout)
- Implement force-kill fallback when ChromaSync close operations timeout
- Prevents hanging on shutdown and ensures subprocess cleanup

**Implementation Details:**
- PID validation checks: Number.isInteger(pid) && pid > 0
- Applied before all execSync taskkill calls on Windows
- Applied in process enumeration (Get-CimInstance) PowerShell commands
- ChromaSync.close() uses Promise.race for timeout enforcement
- Graceful degradation with force-kill fallback on timeout

Addresses PR #378 review feedback

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* Refactor ChromaSync client and transport closure logic

- Removed timeout handling for closing the Chroma client and transport.
- Simplified error logging for client and transport closure.
- Ensured subprocess cleanup logic is more straightforward.

* fix(worker): streamline Windows process management and cleanup

* revert: remove speculative LLM-generated complexity

Reverts defensive code that was added speculatively without user-reported issues:

- ChromaSync: Remove PID extraction and explicit taskkill (wrapper handles this)
- worker-wrapper: Restore simple taskkill /T /F (validated in v7.3.5)
- DatabaseManager: Remove Promise.race timeout wrapper
- hook-constants: Restore original timeout values
- logger: Remove platform/PID additions to every log line
- bun-path: Remove speculative logging

Keeps only changes that map to actual GitHub issues:
- #374: Drive root project name fix (getProjectName utility)
- #363: Readiness endpoint and Windows orphan cleanup
- #367: windowsHide on ChromaSync transport

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Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

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Co-authored-by: Claude Sonnet 4.5 <noreply@anthropic.com>