Per-app lowercase formatting without an AI provider

[w1k5]

Problem

FluidVoice can lowercase the first letter of every transcript, but it cannot force the entire transcript to lowercase. The existing app-specific cleanup styles require an external AI provider.

I want casual apps such as Messages or chat clients to receive all-lowercase dictation, while retaining normal capitalization in email, documents, and code editors. This should not require an AI model, network request, or additional background memory.

Proposed solution

Add a local All Lowercase text-formatting option under Dictation Formatting.

• Disabled by default.
• Supports Everywhere or Only in selected apps, using bundle identifiers and the existing app-picker pattern.
• After transcription and any optional cleanup, but before the finished transcript is inserted and stored, apply Swift's lowercased() when the target app matches.
• Runs after smart capitalization and AI cleanup so the final output is predictably lowercase.
• Requires no provider or model and adds negligible processing overhead.

Example:

Please send this to Alex tomorrow. → please send this to alex tomorrow.

Alternatives considered

• Custom cleanup style: produces the right text, but requires an external AI provider and unnecessary inference.
• Lowercase First Letter: lightweight, but only changes the first character.
• Custom Dictionary / Spoken Formatting: cannot transform arbitrary transcript casing.
• macOS Shortcut: local, but manual and not automatic per app.

Suggested implementation scope

A focused change could reuse the existing app selection UI and persist a set of bundle identifiers for this formatter. Tests should cover the disabled state, global scope, matching and non-matching apps, and Unicode-aware lowercasing.

Would this scope and settings placement be acceptable for a pull request?