Enable hardened runtime and timestamp for notarization

- Enable ENABLE_HARDENED_RUNTIME for Release builds
- Add --timestamp flag to code signing
- Disable base entitlements injection to remove get-task-allow

Add SwiftTerm for ANSI rendering, About box, and UI improvements

- Replace custom ANSI parser with SwiftTerm library for proper terminal
  escape sequence rendering, fixing "Current session" display issues
- Add About dialog with author info, GitHub link, MIT license, and
  SwiftTerm attribution
- Add unit tests for usage output parsing
- Make log window resizable and open as separate window
- Show weekly reset time in menu bar dropdown
- Store last raw output for debugging via Show Log button

Bump version to 1.0.4

Co-Authored-By: Claude Opus 4.5 <[email protected]>

Merge pull request #2 from StuartCameronCode/feature/version-display

Add version display in settings with DEBUG indicator

Add configurable Claude path setting with error handling

Fix usage parsing to use "all models" weekly stat

The usage parser was matching the first "Current week" line it found,
which could be model-specific (e.g., Opus 4.5 only). Update both the
expect script and Swift parsing to specifically look for the
"Current week (all models)" line to get combined usage across all
models.

Initial commit