Fix: Debounce baseline saves to reduce I/O and improve git operation detection (#2)

* Fix: Ignore git operations (pull/merge/checkout) from AI detection

When performing git operations like pull, merge, checkout, or rebase,
files are updated on disk but should not be flagged as AI-generated code.

Changes:
- Add `isGitOperation` flag to track git-originated changes
- Add `recentTextChanges` map for deduplication logic
- When file is tracked AND has no diff vs HEAD, detect as git operation
- Skip AI detection for git operations (only update baseline)
- Process external changes to open files (with deduplication to prevent double counting)

Fixes issues where:
1. Git pull triggered false AI detection leading to automatic version bump
2. Git checkout/merge on open files were missed entirely
3. AI agents modifying open files externally were missed

The fix handles all cases:
- Git operations (pull, merge, checkout, rebase, commit) → Skip AI
- AI agents modifying files (with uncommitted changes) → Detect AI
- New untracked files → Detect AI
- Non-git repos → Use baseline tracking

* Disable auto-release workflow to stop automatic version bumps

The workflow was automatically bumping the patch version on every push to main,
which was causing unintended version increases even for non-release changes like bug fixes.

This removes the automatic version bumping. Future releases will need to be done manually.

* Fix: Debounce baseline saves to reduce I/O and improve git operation detection

- Add debounced saving for persisted baselines (1 second delay) to reduce
  unnecessary disk I/O during rapid file changes
- Improve git operation detection by checking FETCH_HEAD and MERGE_HEAD
  file modification times to detect recent pull/merge/checkout operations
- Remove unnecessary debug logging and comments for cleaner code
- Re-enable logging in BaseTracker for production debugging

This prevents false AI detection when git operations trigger text change
events as VS Code reloads files, and reduces disk I/O from excessive
baseline saving.

* Bump version to 0.1.4

* Fix: Update tests for git operation detection and debounce logic

- Fix BaseTracker test to expect logging output (logging is now enabled)
- Add proper timeout handling for git operation detection tests
- Fix execSync mock to handle encoding parameter correctly
- Add debounce wait periods for tests that call file change handler multiple times

All tests now pass (1396 passed, 18 skipped).

* Fix: SnoozeManager test timing issue - add buffer to ensure hour format

The test was failing because exactly 1 hour (3600000ms) could become
59 minutes during test execution due to timing. Added 1 minute buffer
(3660000ms total) to ensure the status always shows 'hour'.

Author: khaledesmail