[Stephen Griffin (stephenegriffin)]

Summary

Make add-in discovery explicitly opt-in in MFCMAPI and MrMAPI. An empty setting disables discovery; a configured directory is the sole, nonrecursive scan location.

• Replace the Load Add-ins checkbox with an editable directory and Browse action, validating an existing absolute path on a local fixed drive, including its resolved target.
• Preserve DLL inspection, architecture checks, and hash-based approvals. Accepting a changed or cleared directory resets remembered approvals and denials; loaded add-ins remain loaded until restart.
• Initialize only AddInDirectory in MrMAPI through its registered option list, leaving other saved MFCMAPI options out of console behavior. Preserve -NoAddins and -ApproveAddins without adding a directory switch.
• Add a reusable PathPane for directory, open-file, and save-file browsing, adopting it for add-ins, debug output, Load MAPI, PST paths, and Compute Store Hash.
• Integrate compact help into the pane, fix scrolling Options layout, and forward wheel events from unfocused closed dropdowns to the dialog.
• Fix the shared registry string reader to remove its trailing terminator while preserving embedded NULs for validation.

Validation

• Existing VS Code Build Debug x64 and Build Debug x86 tasks passed.
• All 261 x64 unit tests passed; all 17 focused x86 add-in tests passed.
• Regression coverage includes path validation, persistence, discovery scope with distinct candidate hashes, approval-cache clearing, and excluding unrelated saved options from MrMAPI initialization.
• CLI smoke checks passed with clean output for help and add-in overrides.
• Native UI smoke checks passed for independent Browse actions, folder selection, picker/Options cancellation, compact help, wheel scrolling, and focused/expanded dropdown behavior.

Compatibility

Legacy LoadAddIns values are ignored. Existing users must explicitly configure an add-in directory; neither tool falls back to scanning beside its executable. Directory changes take effect on the next launch.

[github-actions]

Test Results

    8 files  ± 0      8 suites  ±0   48s ⏱️ -1s
  261 tests + 9    261 ✅ + 9  0 💤 ±0  0 ❌ ±0 
2 088 runs  +72  2 088 ✅ +72  0 💤 ±0  0 ❌ ±0 

Results for commit 08fb41c. ± Comparison against base commit 105d2d3.

♻️ This comment has been updated with latest results.