Make settings Save atomic and polish inspector controls

[VolkerChristian]

Settings Save could leave part of a draft applied when replay failed, and compact inspector fields wasted space or clipped on Breeze. This PR makes failed replay restore the prior live project and remain retryable, moves source/Reset beside each compact field title, fixes the literal ampersand in the Preferences link, and removes the unused presenter assignment.

Two ordered commits:

1. Formatting only in the six requested settings modules. AST identity is verified against ad4178d; E225/E231/E702 findings are zero. The PR B addendum corrects its compressed-code +106 figure to +482 formatted production lines, exceeding its original +150 ceiling.
2. Functional fixes, with +34 net production lines against the formatting commit (ceiling +40). The universal ampersand guard also covers Qt standard buttons; their native keyboard shortcuts are preserved explicitly.

Validation on Linux, using the existing Xvfb/WM driver and null audio sinks:

• Formatting commit: 561 passed on stock Qt 6.11.2 and 561 passed on native Qt 6.10.2/Breeze.
• Fix commit: 576 passed on each stack.
• Replay faults after the first/middle mutation tested in defaults, talk and slide scopes, with clean/dirty windows: unchanged live state, draft, manifest bytes/mtime, and successful retry.
• Ruff F checks clean; existing placement and tab-order tests pass.
• 32 before/after screenshot pairs reviewed across both stacks, light/dark, 100%/150%, and both requested main-window sizes. Reset remains visible at 200 logical pixels of inspector content.

Full report, commands, accounting and failed attempts. This includes the first run's audio-state audit limitation. No runtime dependencies changed; Windows/macOS were not tested. The Qt bug-report work is separate from this PR.