UI buildout: today screen, med editor with FEST autocomplete, schedule editor, settings

Milestone 9. Hand-rolled back-stack navigation (4 screens don't justify
navigation-compose). DoseActions is now the single implementation of
Taken/Snooze/Skip/Undo shared by notification receiver and UI — two
code paths for 'taken' would eventually disagree about inventory.
Screens read DAO Flows directly; every schedule mutation re-arms
alarms via armAll() (idempotent, OS-deduplicated). One-time battery
prompt + POST_NOTIFICATIONS request on the today screen. Settings:
S3/Garage config, typed-passphrase export/import (replace-all import
re-arms alarms), FEST refresh, PDF share. TalkBack: merged semantics
with full descriptions on dose cards, content descriptions on icon
buttons and day chips. Doctor PDF locale pinned to Bokmål — verified
on emulator after catching English month names on an en-US device.

Emulator-verified end-to-end: battery prompt → system dialog, med
created via editor (validation catches bad input), dose time added →
exact alarm armed immediately, Ta nå → TAKEN + inventory 20→19 +
reactive UI update, Angre → PENDING + inventory restored, settings
renders, PDF generated and share sheet opened.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

app/src/main/res/drawable/ic_back.xml

@@ -0,0 +1,10 @@
+<?xml version="1.0" encoding="utf-8"?>
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+    android:width="24dp" android:height="24dp"
+    android:viewportWidth="24" android:viewportHeight="24"
+    android:autoMirrored="true"
+>
+    <path
+        android:fillColor="#FF000000"
+        android:pathData="M20,11H7.83l5.59,-5.59L12,4l-8,8 8,8 1.41,-1.41L7.83,13H20v-2z" />
+</vector>

app/src/main/res/drawable/ic_meds.xml

@@ -0,0 +1,10 @@
+<?xml version="1.0" encoding="utf-8"?>
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+    android:width="24dp" android:height="24dp"
+    android:viewportWidth="24" android:viewportHeight="24"
+>
+    <!-- Material "medication" pill outline -->
+    <path
+        android:fillColor="#FF000000"
+        android:pathData="M4.22,11.29l7.07,-7.07c2.34,-2.34 6.14,-2.34 8.49,0s2.34,6.14 0,8.49l-7.07,7.07c-2.34,2.34 -6.14,2.34 -8.49,0S1.88,13.64 4.22,11.29zM5.64,12.71c-1.56,1.56 -1.56,4.09 0,5.66s4.09,1.56 5.66,0l2.83,-2.83 -5.66,-5.66L5.64,12.71zM18.36,5.64c-1.56,-1.56 -4.09,-1.56 -5.66,0L9.88,8.46l5.66,5.66 2.83,-2.83C19.93,9.73 19.93,7.2 18.36,5.64z" />
+</vector>

app/src/main/res/drawable/ic_settings.xml

@@ -0,0 +1,10 @@
+<?xml version="1.0" encoding="utf-8"?>
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+    android:width="24dp" android:height="24dp"
+    android:viewportWidth="24" android:viewportHeight="24"
+>
+    <!-- Material "settings" gear -->
+    <path
+        android:fillColor="#FF000000"
+        android:pathData="M19.14,12.94c0.04,-0.3 0.06,-0.61 0.06,-0.94c0,-0.32 -0.02,-0.64 -0.07,-0.94l2.03,-1.58c0.18,-0.14 0.23,-0.41 0.12,-0.61l-1.92,-3.32c-0.12,-0.22 -0.37,-0.29 -0.59,-0.22l-2.39,0.96c-0.5,-0.38 -1.03,-0.7 -1.62,-0.94L14.4,2.81c-0.04,-0.24 -0.24,-0.41 -0.48,-0.41h-3.84c-0.24,0 -0.43,0.17 -0.47,0.41L9.25,5.35C8.66,5.59 8.12,5.92 7.63,6.29L5.24,5.33c-0.22,-0.08 -0.47,0 -0.59,0.22L2.74,8.87C2.62,9.08 2.66,9.34 2.86,9.48l2.03,1.58C4.84,11.36 4.8,11.69 4.8,12s0.02,0.64 0.07,0.94l-2.03,1.58c-0.18,0.14 -0.23,0.41 -0.12,0.61l1.92,3.32c0.12,0.22 0.37,0.29 0.59,0.22l2.39,-0.96c0.5,0.38 1.03,0.7 1.62,0.94l0.36,2.54c0.05,0.24 0.24,0.41 0.48,0.41h3.84c0.24,0 0.44,-0.17 0.47,-0.41l0.36,-2.54c0.59,-0.24 1.13,-0.56 1.62,-0.94l2.39,0.96c0.22,0.08 0.47,0 0.59,-0.22l1.92,-3.32c0.12,-0.22 0.07,-0.47 -0.12,-0.61L19.14,12.94zM12,15.6c-1.98,0 -3.6,-1.62 -3.6,-3.6s1.62,-3.6 3.6,-3.6s3.6,1.62 3.6,3.6S13.98,15.6 12,15.6z" />
+</vector>