more tooltips/inline hints for shortcuts

[jonathanlab]

we need way more tooltips/inline hints, for example CMD+T takes you to the new tasks page but we don't show that when you hover over New Task

[adboio]

my two cents:

• i kinda hate tooltips
• i kinda hate toasts
• generally, i would prefer we do everything we can to keep the UI as minimal as possible, e.g. not putting keyboard shortcut labels permanently inline on their buttons (like "Open ⌘O")

that said, i love when apps "teach" me a behavior. like superhuman - if i click a button to compose for example, i'll get a tooltip that's like "hey just press c next time" - then eventually i start using that, and they stop trying to teach me

i implemented a very small way to do this in code with "hints":

code/apps/code/ARCHITECTURE.md

Lines 291 to 309 in c26f424

	### Learned Hints
	The settings store (`src/renderer/features/settings/stores/settingsStore.ts`) provides a reusable "learned hints" system for progressive feature discovery. Hints are shown a limited number of times until the user demonstrates they've learned the behavior.
	```typescript
	// In the store: hints is Record<string, { count: number; learned: boolean }>
	const store = useFeatureSettingsStore.getState()
	// Check if a hint should still be shown (max N times, not yet learned)
	if (store.shouldShowHint("my-hint-key", 3)) {
	store.recordHintShown("my-hint-key")
	toast.info("Did you know?", "You can do X with Y.")
	}
	// When the user demonstrates the behavior, mark it learned (stops showing)
	store.markHintLearned("my-hint-key")
	```
	Hint state is persisted via `electronStorage`. Use this pattern instead of ad-hoc boolean flags when introducing new discoverable features.

used here for the text pasting stuff: #1258