refactor: rename app from Severed to OpenAppLock

Full rename ahead of App Store submission: project, targets, bundle
identifiers (dev.bchen.Severed -> dev.bchen.OpenAppLock), entitlements
file, app entry point, user-facing onboarding strings, test helpers,
and docs. Verified: all 62 unit tests pass.

Co-Authored-By: Claude <noreply@anthropic.com>

docs/RULES_FEATURE_SPEC.md

@@ -1,9 +1,9 @@
-# Severed — "Rules" Feature Spec (derived from Opal screen recording)
+# OpenAppLock — "Rules" Feature Spec (derived from Opal screen recording)
 
 Source: `ScreenRecording_06-12-2026 11-26-19_1.MP4` (iPhone, 4:29). The rules feature
 appears roughly between 1:00–3:00 of the recording, on Opal's "My Apps" tab.
 This spec describes what was observed, then maps it onto an implementation plan
-for Severed.
+for OpenAppLock.
 
 ---
 
@@ -126,7 +126,7 @@ Presented from "+ New". Full-height sheet, scrollable.
     and a circular "+" button bottom-right. Tapping anywhere opens the
     Schedule editor pre-filled with the preset's name/times/days.
 
-> **Navigation (Severed):** picking a rule type or preset **pushes** the
+> **Navigation (OpenAppLock):** picking a rule type or preset **pushes** the
 > editor inside the sheet via native SwiftUI navigation (`NavigationStack` +
 > `navigationDestination(item:)`), so the system push animation and
 > edge-swipe-back work; the editor keeps its custom header chrome.
@@ -150,7 +150,7 @@ Sections (each an inset rounded group with a small icon + caption header):
    - Row: `Selected Apps` → `N Apps ›` — pushes the App Picker.
 4. **Hard Mode** `⚡PRO` badge — subtitle "No unblocks allowed"; trailing
    toggle.
-5. **Block Adult Content** *(Severed addition — not in the Opal video)* —
+5. **Block Adult Content** *(OpenAppLock addition — not in the Opal video)* —
    subtitle "Filter adult websites while this rule is active"; trailing
    toggle. Maps to Screen Time's web-content filter
    (`ManagedSettingsStore.webContent.blockedByFilter = .auto(...)`), applied
@@ -208,7 +208,7 @@ Full-height sheet:
 > Implementation note: Opal ships its own app categorization. On iOS, third
 > parties cannot enumerate installed apps; the system-sanctioned route is
 > `FamilyActivityPicker` (FamilyControls), which provides its own
-> category/app/website UI and returns opaque tokens. **v1 of Severed should
+> category/app/website UI and returns opaque tokens. **v1 of OpenAppLock should
 > embed `FamilyActivityPicker`** instead of cloning Opal's custom picker, and
 > keep the `Block`/`Allow Only` segmented control as our own wrapper state.
 
@@ -241,7 +241,7 @@ Full-height sheet:
 
 ---
 
-## 5. Implementation plan for Severed
+## 5. Implementation plan for OpenAppLock
 
 ### 5.1 Frameworks & capabilities
 
@@ -334,7 +334,7 @@ enum SelectionMode: String, Codable { case block, allowOnly }
 
 ## 6. Native UI re-skin (current presentation)
 
-Severed has since replaced the Opal-style custom presentation with the bare
+OpenAppLock has since replaced the Opal-style custom presentation with the bare
 iOS design language, keeping the backend (models, logic, services), the
 flows, and the accessibility identifiers intact. Sections 1–5 remain as the
 reference for *what* the feature does; presentation now maps as follows: