fix(types): make renderer typecheck clean

[JustYannicc]

What changed

• Corrected renderer TypeScript mismatches across launcher command/profile types, inline refs, settings handlers, and Raycast runtime helper types.
• Added an ambient declaration for the existing liquid-glass-react renderer import so the renderer project can typecheck without a missing-module diagnostic.
• Kept fixes behavior-preserving: local type narrowing, signature alignment, typo correction for a timer ref, and compatibility type exposure for existing runtime behavior.

Why

Renderer performance PRs were inheriting existing repo-wide TypeScript noise. The baseline renderer project check failed with exit 2 and 46 diagnostics across 20 files, so unrelated work could not rely on a clean renderer typecheck signal.

Compatibility impact

No behavior removal intended. The changes align TypeScript declarations with existing runtime behavior and data shapes. User-facing strings were not added, renamed, or removed.

How tested

• Before: ./node_modules/.bin/tsc -p tsconfig.renderer.json --noEmit --pretty false exited 2 with 46 diagnostics.
• After: ./node_modules/.bin/tsc -p tsconfig.renderer.json --noEmit --pretty false exited 0 with 0 diagnostics.
• LSP: src/renderer/src scan plus targeted checks for raycast-api/index.tsx, hooks/useLauncherCommandModel.ts, settings/AITab.tsx, and utils/quicklink-icons.tsx reported no errors.
• pnpm test passed: 24 pass, 1 skipped because live Electron is not launchable here.
• pnpm run build:renderer passed.
• pnpm run check:i18n exited 0; it still reports pre-existing Italian locale missing keys for settings.ai.whisper.vocabulary and settings.extensions.appSearchScope.

[JustYannicc]

Superseded by #532 (fix(validation): restore project checks), which consolidates this validation/build change with the related source PRs. Closing this PR in favor of the upstream replacement.