feat: add Atlas native app UX overhaul

Docs/COPY_GUIDELINES.md

@@ -0,0 +1,53 @@
+# Copy Guidelines
+
+## Tone
+
+- Calm
+- Direct
+- Reassuring
+- Technical only when necessary
+
+## Product Voice
+
+- Explain what happened first.
+- Explain impact second.
+- Offer a next step every time.
+- Avoid fear-based maintenance language.
+
+## Good Patterns
+
+- `Results may be incomplete without Full Disk Access.`
+- `You can keep using limited mode and grant access later.`
+- `Most selected actions are recoverable.`
+
+## Avoid
+
+- `Critical error`
+- `Illegal operation`
+- `You must allow this`
+- `Your Mac is at risk`
+
+## CTA Style
+
+- Use clear verbs: `Retry`, `Open System Settings`, `Review Plan`, `Restore`
+- Avoid generic CTA labels such as `OK` and `Continue`
+
+## Glossary
+
+- `Scan` — read-only analysis that collects findings; it never removes anything by itself.
+- `Cleanup Plan` / `Uninstall Plan` — the actionable set of reviewed steps Atlas proposes from current findings.
+- `Review` — the user checks the plan before it runs. Avoid using `preview` as the primary noun when the UI is really showing a plan.
+- `Run Plan` / `Run Uninstall` — apply a reviewed plan. Use this for the action that changes the system.
+- `Reclaimable Space` — the estimated space the current plan can free. Make it explicit when the value recalculates after execution.
+- `Recoverable` — Atlas can restore the result from History while the retention window is still open.
+- `App Footprint` — the current disk space an app uses.
+- `Leftover Files` — extra support files, caches, or launch items related to an app uninstall.
+- `Limited Mode` — Atlas works with partial permissions and asks for more access only when a specific workflow needs it.
+
+## Consistency Rules
+
+- Prefer `plan` over `preview` when referring to the actionable object the user can run.
+- Use `review` for the decision step before execution, not for the execution step itself.
+- If a button opens macOS settings, label it `Open System Settings` instead of implying Atlas grants access directly.
+- Distinguish `current plan` from `remaining items after execution` whenever reclaimable-space values can change.
+- Keep permission language calm and reversible: explain what access unlocks, whether it can wait, and what the next step is.