fix/feat: (UI improvements) LLM banner, shortcuts delay, bug when saving, tab constants & Dictionary shortcut

[guicheffer]

Summary

• LLM config banner: small purple badge in Titlebar when AI Enhancement is enabled but not configured/tested — hides when on the AI Enhancement tab, navigates to it on click
• Pipeline rebuild after LLM failure: after onLlmFailed, pipeline is now rebuilt via setImmediate(() => setupPipeline()) so next recording uses NoopProvider (no spurious "enhancing" HUD state)
• Retry button blocked: retry in Transcriptions panel is disabled when entry failed due to LLM and AI Enhancement is still not configured
• Shortcut delay: reduced post-save isInitializing lock from 1500ms → 300ms (first press after saving config now works)
• SaveToast stuck: toast no longer stays visible forever when hideToast() is called externally — syncs visible to false during render when show is false
• Tab constants: all hardcoded tab IDs ("general", "whisper", "llm", etc.) moved to src/shared/tabs.ts as Tabs.GENERAL, Tabs.SPEECH, etc.
• Dictionary shortcut: added Dictionary (⌘D) to the app menu under File, alongside Transcriptions (⌘T)
• i18n: ui.llmConfigBanner key added to all 10 locale files
• btw, included the "First time user" as part of the dev panels options

Test plan

• npm run typecheck passes
• npm run lint passes
• npm run lint:css passes
• npm run check:tokens passes
• npx vitest run passes (584 tests, 54 files)
• Manually tested (describe how)

Code standards

• i18n — All user-facing strings use the translation system. New keys added to all locale files.
• Dev Panel — New internal state is exposed in the Dev Panel where useful for debugging.
• CSS — CSS Modules with CSS custom properties. No hardcoded color/spacing values.
• SVGs — SVG assets in separate files, not inlined in TSX.
• Accessibility — Interactive elements are keyboard-navigable with appropriate ARIA attributes.

Screenshots

also included a warning:

🤖 Generated with Claude Code

[github-actions]

CI Summary

Check	Status
Typecheck	✅ Passed
Lint	✅ Passed
Lint CSS	✅ Passed
Design Tokens	✅ Passed
Test	✅ Passed
Build	✅ Passed

Run #1110

[github-actions]

✅MegaLinter analysis: Success

Descriptor	Linter	Files	Fixed	Errors	Warnings	Elapsed time
✅ JSON	jsonlint	10		0	0	0.14s
✅ JSON	npm-package-json-lint	yes		no	no	1.87s
✅ JSON	prettier	10		0	0	5.49s
✅ JSON	v8r	10		0	0	4.86s
✅ REPOSITORY	checkov	yes		no	no	28.03s
✅ REPOSITORY	devskim	yes		no	no	2.88s
✅ REPOSITORY	dustilock	yes		no	no	0.96s
✅ REPOSITORY	gitleaks	yes		no	no	1.97s
✅ REPOSITORY	git_diff	yes		no	no	0.05s
✅ REPOSITORY	grype	yes		no	no	47.37s
✅ REPOSITORY	kics	yes		no	no	2.73s
✅ REPOSITORY	kingfisher	yes		no	no	5.01s
✅ REPOSITORY	secretlint	yes		no	no	6.14s
✅ REPOSITORY	syft	yes		no	no	2.3s
✅ REPOSITORY	trivy	yes		no	no	20.13s
✅ REPOSITORY	trivy-sbom	yes		no	no	2.74s
✅ REPOSITORY	trufflehog	yes		no	no	3.78s

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