Wake lock persistence, button reposition, docs, dev LAN support

Wake lock (Prevent Sleep) toggles now persist across reloads via
localStorage in both AdminView and DisplayView. Buttons repositioned
inline in AdminView campaigns header bar (was floating overlay causing
overlap on tablets). DisplayView buttons persist localStorage too.

Wake lock acquire failure now shows toast with fix hint (HTTPS or
Chrome flag). Fullscreenchange listener re-acquires wake lock (Android
discards on screen off).

dev-start.sh: auto-detects LAN IP (en0/en1), frontend binds 0.0.0.0,
backend URL inlined as LAN IP so phones reach backend. DANGEROUSLY_DISABLE_HOST_CHECK
for LAN access. Outputs LAN URL + wake lock flag instructions.

Docs: README 'Prevent Sleep (Wake Lock)' section covering secure context
requirement, Android Chrome flag workaround for LAN testing, iOS Safari
standalone PWA bug. DEVELOPMENT.md LAN access + wake lock note.

README.md

@@ -307,6 +307,26 @@ ttrpg-initiative-tracker/
 * `docs/GLOSSARY.md` — domain terms (turn vs. round, etc.)
 * `TODO.md` — known bugs and backlog
 
+## Prevent Sleep (Wake Lock)
+
+DM and Player views have a Coffee/Moon toggle to keep screen awake during combat.
+
+**Requires secure context** (HTTPS or localhost). The Screen Wake Lock API refuses
+on plain HTTP.
+
+- **Prod (HTTPS):** works automatically on all devices.
+- **Local dev (localhost):** works automatically — localhost is a trusted origin.
+- **LAN IP (phones, plain HTTP):** wake lock fails silently. Two options:
+  1. **Android Chrome flag (dev testing):** `chrome://flags/#unsafely-treat-insecure-origin-as-secure` → add full URL with port, e.g. `http://10.0.0.5:3999`. Enable flag, relaunch.
+  2. **mkcert local CA:** generate trusted cert for LAN IP. Heavier setup.
+
+**iOS Safari:** Wake Lock API broken in standalone PWA mode (iOS 16.4–18.4, WebKit bug 254545). Fixed in 18.4+. Works in browser tab (not installed PWA).
+
+**Troubleshooting:** if toggle shows active but screen still sleeps, check:
+- Battery saver / power save mode (browser refuses)
+- Chrome devtools console for `WakeLockError`
+- Secure context: `window.isSecureContext` must be `true`
+
 ## Contributing
 
 If you want to contribute, send me a message here: [https://discourse.draft13.com/c/ttrpg-initiative-tracker/16](https://discourse.draft13.com/c/ttrpg-initiative-tracker/16), and I can add to this Gitea instance and you can feel free to fork the repository and submit pull requests. For major changes, please pose a topic to the Discourse instance above linked above first to discuss what you would like to change.

TODO.md

@@ -5,16 +5,17 @@ Backlog of bugs + long-term items. Milestones live in REWORK_PLAN.md.
 ## Open
 
 
-fullscreen and dont lock on main app dm view and the no-game-player view
+x fullscreen and dont lock on main app dm view and the no-game-player view ...and doesnt actually prevent lock on android
 
 also better vert tab layout - labelt friendly
 
-needs AC for players dude
+x needs AC for players dude
 
 and quick entry hp
 
 hp do not carry from encounter to ecnounter!!!
-
+^feature to add back to campaign character after encounter?
+maybe campaign toggle in charc section (choosing each end is DM overload will be missed forgotten done wront)
 
 hp wont go over max and no temp hp support
 

docs/DEVELOPMENT.md

@@ -63,6 +63,14 @@ git config core.hooksPath .githooks   # enable pre-push test gate
 
 Idempotent: if port busy, leaves existing proc as-is.
 
+**LAN access (phones):** frontend binds 0.0.0.0, LAN IP auto-detected.
+Other devices hit `http://<lan-ip>:3999`.
+
+**Wake Lock (Prevent Sleep) on LAN IP:** requires secure context.
+Plain HTTP on LAN IP = wake lock silently fails. Android Chrome flag workaround:
+`chrome://flags/#unsafely-treat-insecure-origin-as-secure` → add
+`http://<lan-ip>:3999` (with port), enable, relaunch. See README for full details.
+
 Smoke check:
 ```bash
 curl http://127.0.0.1:4001/health   # -> {"ok":true}

scripts/dev-start.sh

@@ -27,11 +27,15 @@ fi
 
 # frontend: server storage, :3999
 if ! lsof -ti :3999 >/dev/null 2>&1; then
-  echo "starting frontend :3999..."
+  # detect LAN ip so other devices (phones) can reach backend
+  LAN_IP=$(ipconfig getifaddr en0 2>/dev/null || ipconfig getifaddr en1 2>/dev/null || echo 127.0.0.1)
+  echo "starting frontend :3999 (lan ip: $LAN_IP)..."
   NODE_ENV=development REACT_APP_DEV_TOOLS=1 \
   REACT_APP_STORAGE=server \
-  REACT_APP_BACKEND_URL=http://127.0.0.1:4001 \
+  REACT_APP_BACKEND_URL=http://${LAN_IP}:4001 \
-  REACT_APP_BACKEND_REALTIME_URL=ws://127.0.0.1:4001/ws \
+  REACT_APP_BACKEND_REALTIME_URL=ws://${LAN_IP}:4001/ws \
+  DANGEROUSLY_DISABLE_HOST_CHECK=true \
+  HOST=0.0.0.0 \
   BROWSER=none PORT=3999 \
     nohup npm start > tmp/fe.log 2>&1 &
   echo $! > tmp/fe.pid
@@ -51,5 +55,11 @@ done
 echo ""
 echo "backend  : http://127.0.0.1:4001   (curl http://127.0.0.1:4001/health)"
 echo "frontend : http://127.0.0.1:3999   (admin /  player /display)"
+echo "lan url  : http://${LAN_IP}:3999   (phones/other devices on network)"
 echo "logs     : tmp/server.log tmp/fe.log"
 echo "stop     : ./scripts/dev-stop.sh"
+echo ""
+echo "NOTE: Prevent Sleep (wake lock) requires secure context (HTTPS/localhost)."
+echo "  LAN IP (http) won't work unless Android Chrome flag set:"
+echo "  chrome://flags/#unsafely-treat-insecure-origin-as-secure"
+echo "  Add: http://${LAN_IP}:3999 (include port)"

shared/tests/turn.ac.test.js

@@ -0,0 +1,35 @@
+// AC field on participant + builders.
+const shared = require('@ttrpg/shared');
+const { makeParticipant, buildMonsterParticipant, buildCharacterParticipant, rollHpFormula } = shared;
+
+describe('AC field', () => {
+  test('makeParticipant accepts ac', () => {
+    const p = makeParticipant({ name: 'Orc', type: 'monster', initiative: 10, maxHp: 15, currentHp: 15, ac: 13 });
+    expect(p.ac).toBe(13);
+  });
+
+  test('makeParticipant ac defaults null', () => {
+    const p = makeParticipant({ name: 'Orc', type: 'monster', initiative: 10, maxHp: 15, currentHp: 15 });
+    expect(p.ac).toBeNull();
+  });
+
+  test('buildMonsterParticipant accepts ac', () => {
+    const { participant } = buildMonsterParticipant({ name: 'Goblin', maxHp: 7, initMod: 2, ac: 15 });
+    expect(participant.ac).toBe(15);
+  });
+
+  test('buildMonsterParticipant ac defaults null', () => {
+    const { participant } = buildMonsterParticipant({ name: 'Goblin', maxHp: 7 });
+    expect(participant.ac).toBeNull();
+  });
+
+  test('buildCharacterParticipant accepts character ac', () => {
+    const { participant } = buildCharacterParticipant({ id: 'c1', name: 'Fighter', defaultMaxHp: 30, defaultInitMod: 2, defaultAc: 18 });
+    expect(participant.ac).toBe(18);
+  });
+
+  test('buildCharacterParticipant ac defaults null when unset', () => {
+    const { participant } = buildCharacterParticipant({ id: 'c1', name: 'Fighter', defaultMaxHp: 30 });
+    expect(participant.ac).toBeNull();
+  });
+});

shared/turn.js

@@ -361,6 +361,7 @@ function makeParticipant(opts) {
     deathSaveSuccesses: opts.deathSaveSuccesses || 0,
     deathSaveFailures: opts.deathSaveFailures || 0,
     hpFormula: opts.hpFormula || null,
+    ac: opts.ac !== undefined ? opts.ac : null,
   };
 }
 
@@ -377,12 +378,13 @@ function buildCharacterParticipant(character) {
       initiative: finalInitiative,
       maxHp,
       currentHp: maxHp,
+      ac: character.defaultAc !== undefined ? character.defaultAc : null,
     }),
     roll: { roll: initiativeRoll, mod: modifier, total: finalInitiative },
   };
 }
 
-function buildMonsterParticipant({ name, maxHp, initMod, asNpc, hpFormula }) {
+function buildMonsterParticipant({ name, maxHp, initMod, asNpc, hpFormula, ac }) {
   const initiativeRoll = rollD20();
   const modifier = initMod !== undefined ? initMod : MONSTER_DEFAULT_INIT_MOD;
   const finalInitiative = initiativeRoll + modifier;
@@ -406,6 +408,7 @@ function buildMonsterParticipant({ name, maxHp, initMod, asNpc, hpFormula }) {
       maxHp: hp,
       currentHp: hp,
       hpFormula: hpFormula || null,
+      ac: ac !== undefined ? ac : null,
     }),
     roll: { roll: initiativeRoll, mod: modifier, total: finalInitiative, hpRoll },
   };

src/App.js

@@ -583,6 +583,7 @@ function EditParticipantModal({ participant, onClose, onSave }) {
   const [currentHp, setCurrentHp] = useState(participant.currentHp);
   const [maxHp, setMaxHp] = useState(participant.maxHp);
   const [hpFormula, setHpFormula] = useState(participant.hpFormula || '');
+  const [ac, setAc] = useState(participant.ac != null ? participant.ac : '');
   const [asNpc, setAsNpc] = useState(participant.type === 'npc');
 
   const handleSubmit = (e) => {
@@ -602,6 +603,7 @@ function EditParticipantModal({ participant, onClose, onSave }) {
       currentHp: finalCurrentHp,
       maxHp: finalMaxHp,
       hpFormula: (participant.type === 'monster' || participant.type === 'npc') ? (hpFormula.trim() || null) : null,
+      ac: ac !== '' ? parseInt(ac, 10) : null,
       type: participant.type === 'monster' || participant.type === 'npc' ? (asNpc ? 'npc' : 'monster') : participant.type,
     });
   };
@@ -618,15 +620,27 @@ function EditParticipantModal({ participant, onClose, onSave }) {
             className="mt-1 block w-full px-3 py-2 bg-stone-800 border border-stone-700 rounded-md shadow-sm focus:outline-none focus:ring-amber-600 focus:border-amber-600 sm:text-sm text-white"
           />
         </div>
-        <div>
+        <div className="flex gap-4">
-          <label htmlFor="edit-initiative" className="block text-sm font-medium text-stone-300">Initiative</label>
+          <div className="flex-1">
-          <input
+            <label htmlFor="edit-initiative" className="block text-sm font-medium text-stone-300">Initiative</label>
-            type="number"
+            <input
-            id="edit-initiative"
+              type="number"
-            value={initiative}
+              id="edit-initiative"
-            onChange={(e) => setInitiative(e.target.value)}
+              value={initiative}
-            className="mt-1 block w-full px-3 py-2 bg-stone-800 border border-stone-700 rounded-md shadow-sm focus:outline-none focus:ring-amber-600 focus:border-amber-600 sm:text-sm text-white"
+              onChange={(e) => setInitiative(e.target.value)}
-          />
+              className="mt-1 block w-full px-3 py-2 bg-stone-800 border border-stone-700 rounded-md shadow-sm focus:outline-none focus:ring-amber-600 focus:border-amber-600 sm:text-sm text-white"
+            />
+          </div>
+          <div className="flex-1">
+            <label className="block text-sm font-medium text-stone-300">AC</label>
+            <input
+              type="number"
+              value={ac}
+              onChange={(e) => setAc(e.target.value)}
+              placeholder="optional"
+              className="mt-1 block w-full px-3 py-2 bg-stone-800 border border-stone-700 rounded-md shadow-sm focus:outline-none focus:ring-amber-600 focus:border-amber-600 sm:text-sm text-white"
+            />
+          </div>
         </div>
         <div className="flex gap-4">
           <div className="flex-1">
@@ -656,7 +670,7 @@ function EditParticipantModal({ participant, onClose, onSave }) {
                 type="text"
                 value={hpFormula}
                 onChange={(e) => setHpFormula(e.target.value)}
-                placeholder="2d6+9"
+                placeholder="e.g. 2d6+9"
                 className="flex-1 px-3 py-2 bg-stone-800 border border-stone-700 rounded-md shadow-sm focus:outline-none focus:ring-amber-600 focus:border-amber-600 sm:text-sm text-white"
               />
               <button
@@ -717,6 +731,7 @@ function CharacterManager({ campaignId, campaignCharacters }) {
   const [characterName, setCharacterName] = useState('');
   const [defaultMaxHp, setDefaultMaxHp] = useState(DEFAULT_MAX_HP);
   const [defaultInitMod, setDefaultInitMod] = useState(DEFAULT_INIT_MOD);
+  const [defaultAc, setDefaultAc] = useState('');
   const [editingCharacter, setEditingCharacter] = useState(null);
   const [showDeleteConfirm, setShowDeleteConfirm] = useState(false);
   const [itemToDelete, setItemToDelete] = useState(null);
@@ -762,7 +777,8 @@ function CharacterManager({ campaignId, campaignCharacters }) {
       id: generateId(),
       name: characterName.trim(),
       defaultMaxHp: hp,
-      defaultInitMod: initMod
+      defaultInitMod: initMod,
+      defaultAc: defaultAc !== '' ? parseInt(defaultAc, 10) : null
     };
 
     try {
@@ -772,12 +788,13 @@ function CharacterManager({ campaignId, campaignCharacters }) {
       setCharacterName('');
       setDefaultMaxHp(DEFAULT_MAX_HP);
       setDefaultInitMod(DEFAULT_INIT_MOD);
+      setDefaultAc('');
     } catch (err) {
       console.error("Error adding character:", err);
       showToast("Failed to add character. Please try again.");    }
   };
 
-  const handleUpdateCharacter = async (characterId, newName, newDefaultMaxHp, newDefaultInitMod) => {
+  const handleUpdateCharacter = async (characterId, newName, newDefaultMaxHp, newDefaultInitMod, newDefaultAc) => {
     if (!db || !newName.trim() || !campaignId) return;
 
     const hp = parseInt(newDefaultMaxHp, 10);
@@ -794,7 +811,7 @@ function CharacterManager({ campaignId, campaignCharacters }) {
 
     const updatedCharacters = campaignCharacters.map(c =>
       c.id === characterId
-        ? { ...c, name: newName.trim(), defaultMaxHp: hp, defaultInitMod: initMod }
+        ? { ...c, name: newName.trim(), defaultMaxHp: hp, defaultInitMod: initMod, defaultAc: newDefaultAc !== undefined && newDefaultAc !== '' ? parseInt(newDefaultAc, 10) : null }
         : c
     );
 
@@ -843,8 +860,8 @@ function CharacterManager({ campaignId, campaignCharacters }) {
 
         {isOpen && (
           <>
-            <form onSubmit={(e) => { e.preventDefault(); handleAddCharacter(); }} className="grid grid-cols-1 sm:grid-cols-3 gap-2 mb-4 items-end">
+            <form onSubmit={(e) => { e.preventDefault(); handleAddCharacter(); }} className="grid grid-cols-2 sm:grid-cols-12 gap-2 mb-4 items-end">
-              <div className="sm:col-span-1">
+              <div className="col-span-2 sm:col-span-6">
                 <label htmlFor="characterName" className="block text-xs font-medium text-stone-400">
                   Name
                 </label>
@@ -857,19 +874,7 @@ function CharacterManager({ campaignId, campaignCharacters }) {
                   className="w-full px-3 py-2 bg-stone-800 border border-stone-700 rounded-md shadow-sm focus:outline-none focus:ring-amber-600 focus:border-amber-600 sm:text-sm text-white"
                 />
               </div>
-              <div className="w-full sm:w-auto">
+              <div className="sm:col-span-2">
-                <label htmlFor="defaultMaxHp" className="block text-xs font-medium text-stone-400">
-                  Default HP
-                </label>
-                <input
-                  type="number"
-                  id="defaultMaxHp"
-                  value={defaultMaxHp}
-                  onChange={(e) => setDefaultMaxHp(e.target.value)}
-                  className="w-full px-3 py-2 bg-stone-800 border border-stone-700 rounded-md shadow-sm focus:outline-none focus:ring-amber-600 focus:border-amber-600 sm:text-sm text-white"
-                />
-              </div>
-              <div className="w-full sm:w-auto">
                 <label htmlFor="defaultInitMod" className="block text-xs font-medium text-stone-400">
                   Init Mod
                 </label>
@@ -881,9 +886,33 @@ function CharacterManager({ campaignId, campaignCharacters }) {
                   className="w-full px-3 py-2 bg-stone-800 border border-stone-700 rounded-md shadow-sm focus:outline-none focus:ring-amber-600 focus:border-amber-600 sm:text-sm text-white"
                 />
               </div>
+              <div className="sm:col-span-2">
+                <label htmlFor="defaultAc" className="block text-xs font-medium text-stone-400">
+                  AC
+                </label>
+                <input
+                  type="number"
+                  id="defaultAc"
+                  value={defaultAc}
+                  onChange={(e) => setDefaultAc(e.target.value)}
+                  className="w-full px-3 py-2 bg-stone-800 border border-stone-700 rounded-md shadow-sm focus:outline-none focus:ring-amber-600 focus:border-amber-600 sm:text-sm text-white"
+                />
+              </div>
+              <div className="sm:col-span-2">
+                <label htmlFor="defaultMaxHp" className="block text-xs font-medium text-stone-400">
+                  HP
+                </label>
+                <input
+                  type="number"
+                  id="defaultMaxHp"
+                  value={defaultMaxHp}
+                  onChange={(e) => setDefaultMaxHp(e.target.value)}
+                  className="w-full px-3 py-2 bg-stone-800 border border-stone-700 rounded-md shadow-sm focus:outline-none focus:ring-amber-600 focus:border-amber-600 sm:text-sm text-white"
+                />
+              </div>
               <button
                 type="submit"
-                className="sm:col-span-3 sm:w-auto sm:justify-self-end px-4 py-2 text-sm font-medium text-white bg-amber-700 hover:bg-amber-800 rounded-md transition-colors flex items-center justify-center"
+                className="col-span-2 sm:col-span-12 sm:w-auto sm:justify-self-end px-4 py-2 text-sm font-medium text-white bg-amber-700 hover:bg-amber-800 rounded-md transition-colors flex items-center justify-center"
               >
                 <PlusCircle size={18} className="mr-1" /> Add Character
               </button>
@@ -914,31 +943,51 @@ function CharacterManager({ campaignId, campaignCharacters }) {
                           character.id,
                           editingCharacter.name,
                           editingCharacter.defaultMaxHp,
-                          editingCharacter.defaultInitMod
+                          editingCharacter.defaultInitMod,
+                          editingCharacter.defaultAc
                         );
                       }}
                       className="flex-grow flex flex-wrap gap-2 items-center"
                     >
-                      <input
+                      <div className="flex flex-col flex-grow min-w-[100px]">
-                        type="text"
+                        <label className="text-[10px] text-stone-400 mb-0.5">Name</label>
-                        value={editingCharacter.name}
+                        <input
-                        onChange={(e) => setEditingCharacter({ ...editingCharacter, name: e.target.value })}
+                          type="text"
-                        className="flex-grow min-w-[100px] px-2 py-1 bg-stone-700 border border-stone-600 rounded-md text-white"
+                          value={editingCharacter.name}
-                      />
+                          onChange={(e) => setEditingCharacter({ ...editingCharacter, name: e.target.value })}
-                      <input
+                          className="w-full px-2 py-1 bg-stone-700 border border-stone-600 rounded-md text-white"
-                        type="number"
+                        />
-                        value={editingCharacter.defaultMaxHp}
+                      </div>
-                        onChange={(e) => setEditingCharacter({ ...editingCharacter, defaultMaxHp: e.target.value })}
+                      <div className="flex flex-col">
-                        className="w-20 px-2 py-1 bg-stone-700 border border-stone-600 rounded-md text-white"
+                        <label className="text-[10px] text-stone-400 mb-0.5">HP</label>
-                        title="Default Max HP"
+                        <input
-                      />
+                          type="number"
-                      <input
+                          value={editingCharacter.defaultMaxHp}
-                        type="number"
+                          onChange={(e) => setEditingCharacter({ ...editingCharacter, defaultMaxHp: e.target.value })}
-                        value={editingCharacter.defaultInitMod}
+                          className="w-20 px-2 py-1 bg-stone-700 border border-stone-600 rounded-md text-white"
-                        onChange={(e) => setEditingCharacter({ ...editingCharacter, defaultInitMod: e.target.value })}
+                          title="Default Max HP"
-                        className="w-20 px-2 py-1 bg-stone-700 border border-stone-600 rounded-md text-white"
+                        />
-                        title="Default Init Mod"
+                      </div>
-                      />
+                      <div className="flex flex-col">
+                        <label className="text-[10px] text-stone-400 mb-0.5">Init</label>
+                        <input
+                          type="number"
+                          value={editingCharacter.defaultInitMod}
+                          onChange={(e) => setEditingCharacter({ ...editingCharacter, defaultInitMod: e.target.value })}
+                          className="w-20 px-2 py-1 bg-stone-700 border border-stone-600 rounded-md text-white"
+                          title="Default Init Mod"
+                        />
+                      </div>
+                      <div className="flex flex-col">
+                        <label className="text-[10px] text-stone-400 mb-0.5">AC</label>
+                        <input
+                          type="number"
+                          value={editingCharacter.defaultAc ?? ''}
+                          onChange={(e) => setEditingCharacter({ ...editingCharacter, defaultAc: e.target.value })}
+                          className="w-16 px-2 py-1 bg-stone-700 border border-stone-600 rounded-md text-white"
+                          title="AC"
+                        />
+                      </div>
                       <button type="submit" className="p-1 text-green-400 hover:text-green-300">
                         <Save size={18} />
                       </button>
@@ -955,7 +1004,7 @@ function CharacterManager({ campaignId, campaignCharacters }) {
                       <span className="text-stone-100">
                         {character.name}{' '}
                         <span className="text-xs text-stone-400">
-                          (HP: {character.defaultMaxHp || 'N/A'}, Init Mod: {formatInitMod(character.defaultInitMod)})
+                          (HP: {character.defaultMaxHp || 'N/A'}, Init Mod: {formatInitMod(character.defaultInitMod)}{character.defaultAc != null ? `, AC: ${character.defaultAc}` : ''})
                         </span>
                       </span>
                       <div className="flex space-x-2">
@@ -964,7 +1013,8 @@ function CharacterManager({ campaignId, campaignCharacters }) {
                             id: character.id,
                             name: character.name,
                             defaultMaxHp: character.defaultMaxHp || DEFAULT_MAX_HP,
-                            defaultInitMod: character.defaultInitMod || DEFAULT_INIT_MOD
+                            defaultInitMod: character.defaultInitMod || DEFAULT_INIT_MOD,
+                            defaultAc: character.defaultAc ?? ''
                           })}
                           className="p-1 rounded transition-colors text-yellow-400 hover:text-yellow-300 bg-stone-700 hover:bg-stone-600"
                           aria-label="Edit character"
@@ -1013,6 +1063,7 @@ function ParticipantManager({ encounter, encounterPath, campaignCharacters, camp
   const [maxHp, setMaxHp] = useState('');
   const [hpFormula, setHpFormula] = useState('');
   const [manualInitiative, setManualInitiative] = useState('');
+  const [monsterAc, setMonsterAc] = useState('');
   const [asNpc, setAsNpc] = useState(false);
   const [editingParticipant, setEditingParticipant] = useState(null);
   const [hpChangeValues, setHpChangeValues] = useState({});
@@ -1095,6 +1146,7 @@ function ParticipantManager({ encounter, encounterPath, campaignCharacters, camp
       maxHp: currentMaxHp,
       currentHp: currentMaxHp,
       hpFormula: participantType === 'monster' ? (hpFormula.trim() || null) : null,
+      ac: participantType === 'monster' && monsterAc !== '' ? parseInt(monsterAc, 10) : (participantType === 'character' ? (campaignCharacters.find(c => c.id === selectedCharacterId)?.defaultAc ?? null) : null),
       conditions: [],
       isActive: true,
       status: 'conscious',
@@ -1120,6 +1172,7 @@ function ParticipantManager({ encounter, encounterPath, campaignCharacters, camp
       setHpFormula('');
       setSelectedCharacterId('');
       setMonsterInitMod(MONSTER_DEFAULT_INIT_MOD);
+      setMonsterAc('');
       setAsNpc(false);
       setManualInitiative('');
     } catch (err) {
@@ -1411,7 +1464,7 @@ function ParticipantManager({ encounter, encounterPath, campaignCharacters, camp
                   className="mt-1 w-full px-3 py-2 bg-stone-800 border border-stone-700 rounded-md shadow-sm focus:outline-none focus:ring-amber-600 focus:border-amber-600 sm:text-sm text-white"
                 />
               </div>
-              <div className="md:col-span-3">
+              <div className="md:col-span-2">
                 <label htmlFor="monsterInitMod" className="block text-sm font-medium text-stone-300">
                   Init Mod
                 </label>
@@ -1423,7 +1476,7 @@ function ParticipantManager({ encounter, encounterPath, campaignCharacters, camp
                   className="mt-1 w-full px-3 py-2 bg-stone-800 border border-stone-700 rounded-md shadow-sm focus:outline-none focus:ring-amber-600 focus:border-amber-600 sm:text-sm text-white"
                 />
               </div>
-              <div className="md:col-span-3">
+              <div className="md:col-span-2">
                 <label htmlFor="manualInitiative" className="block text-sm font-medium text-stone-300">
                   Initiative <span className="text-xs text-stone-400">(blank=roll)</span>
                 </label>
@@ -1436,7 +1489,17 @@ function ParticipantManager({ encounter, encounterPath, campaignCharacters, camp
                   className="mt-1 w-full px-3 py-2 bg-stone-800 border border-stone-700 rounded-md shadow-sm focus:outline-none focus:ring-amber-600 focus:border-amber-600 sm:text-sm text-white"
                 />
               </div>
-              <div className="md:col-span-3">
+              <div className="md:col-span-2">
+                <label htmlFor="monsterAc" className="block text-sm font-medium text-stone-300">AC</label>
+                <input
+                  type="number"
+                  id="monsterAc"
+                  value={monsterAc}
+                  onChange={(e) => setMonsterAc(e.target.value)}
+                  className="mt-1 w-full px-3 py-2 bg-stone-800 border border-stone-700 rounded-md shadow-sm focus:outline-none focus:ring-amber-600 focus:border-amber-600 sm:text-sm text-white"
+                />
+              </div>
+              <div className="md:col-span-2">
                 <label htmlFor="monsterMaxHp" className="block text-sm font-medium text-stone-300">
                   Max HP
                 </label>
@@ -1448,16 +1511,16 @@ function ParticipantManager({ encounter, encounterPath, campaignCharacters, camp
                   className="mt-1 w-full px-3 py-2 bg-stone-800 border border-stone-700 rounded-md shadow-sm focus:outline-none focus:ring-amber-600 focus:border-amber-600 sm:text-sm text-white"
                 />
               </div>
-              <div className="md:col-span-3">
+              <div className="md:col-span-4">
                 <label htmlFor="monsterHpFormula" className="block text-sm font-medium text-stone-300">
-                  HP Formula (e.g. 2d6+9)
+                  HP Formula
                 </label>
                 <input
                   type="text"
                   id="monsterHpFormula"
                   value={hpFormula}
                   onChange={(e) => setHpFormula(e.target.value)}
-                  placeholder="2d6+9"
+                  placeholder="e.g. 2d6+9"
                   className="mt-1 w-full px-3 py-2 bg-stone-800 border border-stone-700 rounded-md shadow-sm focus:outline-none focus:ring-amber-600 focus:border-amber-600 sm:text-sm text-white"
                 />
               </div>
@@ -1579,6 +1642,12 @@ function ParticipantManager({ encounter, encounterPath, campaignCharacters, camp
                     <p className="font-semibold text-lg text-white">
                       {isZeroHp && <span className="mr-2">☠️</span>}
                       {p.name} <span className="text-xs">({participantDisplayType})</span>
+                      {p.ac != null && (
+                        <span className="ml-2 inline-flex items-baseline gap-1 px-2 py-0.5 bg-sky-900 border border-sky-500 rounded">
+                          <span className="text-[10px] text-sky-300 font-semibold tracking-wide">AC</span>
+                          <span className="text-sky-100 text-lg font-bold leading-none">{p.ac}</span>
+                        </span>
+                      )}
                       {isCurrentTurn && !encounter.isPaused && (
                         <span className="ml-2 px-2 py-0.5 bg-yellow-400 text-black text-xs font-bold rounded-full inline-flex items-center">
                           <Zap size={12} className="mr-1" /> CURRENT
@@ -1604,7 +1673,7 @@ function ParticipantManager({ encounter, encounterPath, campaignCharacters, camp
                           onFocus={(e) => e.target.select()}
                           onBlur={(e) => { if (e.target.value !== String(p.initiative)) handleInlineInitiative(p.id, e.target.value); }}
                           onKeyDown={(e) => { if (e.key === 'Enter') e.target.blur(); }}
-                          className="w-10 px-1 py-0.5 bg-stone-800 border border-stone-700 rounded-md shadow-sm text-white text-sm focus:outline-none focus:ring-1 focus:ring-amber-600 focus:border-amber-600 disabled:opacity-50 disabled:cursor-not-allowed"
+                          className="w-8 px-1 py-0.5 bg-stone-800 border border-stone-700 rounded-md shadow-sm text-white text-sm text-center focus:outline-none focus:ring-1 focus:ring-amber-600 focus:border-amber-600 disabled:opacity-50 disabled:cursor-not-allowed"
                           aria-label={`Initiative for ${p.name}`}
                         />
                       </span>
@@ -2420,6 +2489,53 @@ function AdminView({ userId }) {
   );
   const { data: initialActiveInfo } = useFirestoreDocument(getPath.activeDisplay());
 
+  const [isFullscreen, setIsFullscreen] = useState(false);
+  const [wakeLockEnabled, setWakeLockEnabled] = useState(() => {
+    try { return localStorage.getItem('ttrpg.wakeLock') === 'true'; }
+    catch { return false; }
+  });
+  const wakeLockRef = useRef(null);
+
+  const toggleFullscreen = () => {
+    if (!document.fullscreenElement) {
+      document.documentElement.requestFullscreen();
+    } else {
+      document.exitFullscreen();
+    }
+  };
+
+  useEffect(() => {
+    const onFsChange = () => setIsFullscreen(!!document.fullscreenElement);
+    document.addEventListener('fullscreenchange', onFsChange);
+    return () => document.removeEventListener('fullscreenchange', onFsChange);
+  }, []);
+
+  useEffect(() => {
+    if (!wakeLockEnabled) {
+      wakeLockRef.current?.release();
+      wakeLockRef.current = null;
+      return;
+    }
+    const acquire = async () => {
+      try { wakeLockRef.current = await navigator.wakeLock.request('screen'); }
+      catch (e) {
+        console.error('Wake lock failed:', e);
+        showToast('Prevent Sleep failed. Requires HTTPS or Chrome flag: chrome://flags/#unsafely-treat-insecure-origin-as-secure');
+      }
+    };
+    acquire();
+    const onVisChange = () => { if (document.visibilityState === 'visible') acquire(); };
+    const onFsChange = () => { if (document.fullscreenElement) acquire(); };
+    document.addEventListener('visibilitychange', onVisChange);
+    document.addEventListener('fullscreenchange', onFsChange);
+    return () => {
+      document.removeEventListener('visibilitychange', onVisChange);
+      document.removeEventListener('fullscreenchange', onFsChange);
+      wakeLockRef.current?.release();
+      wakeLockRef.current = null;
+    };
+  }, [wakeLockEnabled, showToast]);
+
   const [campaignsWithDetails, setCampaignsWithDetails] = useState([]);
   const [draggedCampaignId, setDraggedCampaignId] = useState(null);
   const [selectedCampaignId, setSelectedCampaignId] = useState(null);
@@ -2666,6 +2782,22 @@ function AdminView({ userId }) {
             >
               <PlusCircle size={20} className="mr-2" /> Create Campaign
             </button>
+            <div className="flex gap-1">
+              <button
+                onClick={() => setWakeLockEnabled(v => { localStorage.setItem('ttrpg.wakeLock', String(!v)); return !v; })}
+                title={wakeLockEnabled ? 'Allow sleep' : 'Prevent sleep'}
+                className={`p-2 rounded-lg transition-all ${wakeLockEnabled ? 'bg-amber-600 hover:bg-amber-700 text-white' : 'bg-stone-800 hover:bg-stone-700 text-stone-300 hover:text-white'}`}
+              >
+                {wakeLockEnabled ? <Coffee size={20} /> : <Moon size={20} />}
+              </button>
+              <button
+                onClick={toggleFullscreen}
+                title={isFullscreen ? 'Exit fullscreen' : 'Enter fullscreen'}
+                className="bg-stone-800 hover:bg-stone-700 text-stone-300 hover:text-white p-2 rounded-lg transition-all"
+              >
+                {isFullscreen ? <Minimize2 size={20} /> : <Maximize2 size={20} />}
+              </button>
+            </div>
           </div>
 
           {!campaignsCollapsed && (
@@ -2894,7 +3026,10 @@ function DisplayView() {
   const [campaignBackgroundUrl, setCampaignBackgroundUrl] = useState('');
   const [isPlayerDisplayActive, setIsPlayerDisplayActive] = useState(false);
   const [isFullscreen, setIsFullscreen] = useState(false);
-  const [wakeLockEnabled, setWakeLockEnabled] = useState(false);
+  const [wakeLockEnabled, setWakeLockEnabled] = useState(() => {
+    try { return localStorage.getItem('ttrpg.wakeLock') === 'true'; }
+    catch { return false; }
+  });
   const [displayParticipants, setDisplayParticipants] = useState([]);
   const wakeLockRef = useRef(null);
   const currentParticipantRef = useRef(null);
@@ -2960,8 +3095,12 @@ function DisplayView() {
     // Re-acquire after tab becomes visible again (browser auto-releases on hide)
     const onVisChange = () => { if (document.visibilityState === 'visible') acquire(); };
     document.addEventListener('visibilitychange', onVisChange);
+    // Re-acquire on fullscreen change (Android discards wakeLock on screen off)
+    const onFsChange = () => { if (document.fullscreenElement) acquire(); };
+    document.addEventListener('fullscreenchange', onFsChange);
     return () => {
       document.removeEventListener('visibilitychange', onVisChange);
+      document.removeEventListener('fullscreenchange', onFsChange);
       wakeLockRef.current?.release();
       wakeLockRef.current = null;
     };
@@ -3052,6 +3191,22 @@ function DisplayView() {
   if (!isPlayerDisplayActive || !activeEncounterData) {
     return (
       <div className="min-h-screen bg-black text-stone-400 flex flex-col items-center justify-center p-4 text-center">
+        <div className="fixed top-3 right-3 z-50 flex gap-2">
+          <button
+            onClick={() => setWakeLockEnabled(v => { localStorage.setItem('ttrpg.wakeLock', String(!v)); return !v; })}
+            title={wakeLockEnabled ? 'Allow sleep' : 'Prevent sleep'}
+            className={`p-2 rounded-lg transition-all ${wakeLockEnabled ? 'bg-amber-600 hover:bg-amber-700 text-white' : 'bg-stone-800 bg-opacity-80 hover:bg-opacity-100 text-stone-300 hover:text-white'}`}
+          >
+            {wakeLockEnabled ? <Coffee size={20} /> : <Moon size={20} />}
+          </button>
+          <button
+            onClick={toggleFullscreen}
+            title={isFullscreen ? 'Exit fullscreen' : 'Enter fullscreen'}
+            className="bg-stone-800 bg-opacity-80 hover:bg-opacity-100 text-stone-300 hover:text-white p-2 rounded-lg transition-all"
+          >
+            {isFullscreen ? <Minimize2 size={20} /> : <Maximize2 size={20} />}
+          </button>
+        </div>
         <EyeOff size={64} className="mb-4 text-stone-500" />
         <h2 className="text-3xl font-semibold font-cinzel tracking-wide">Game Session Paused</h2>
         <p className="text-xl mt-2">The Dungeon Master has not activated an encounter for display.</p>
@@ -3084,7 +3239,7 @@ function DisplayView() {
     >
       <div className="fixed top-3 right-3 z-50 flex gap-2">
         <button
-          onClick={() => setWakeLockEnabled(v => !v)}
+          onClick={() => setWakeLockEnabled(v => { localStorage.setItem('ttrpg.wakeLock', String(!v)); return !v; })}
           title={wakeLockEnabled ? 'Allow sleep' : 'Prevent sleep'}
           className={`p-2 rounded-lg transition-all ${wakeLockEnabled ? 'bg-amber-600 hover:bg-amber-700 text-white' : 'bg-stone-800 bg-opacity-80 hover:bg-opacity-100 text-stone-300 hover:text-white'}`}
         >

src/tests/App.characterization.test.js

@@ -62,7 +62,7 @@ describe('Campaign -> Firebase', () => {
 
     // CharacterManager form
     fireEvent.change(screen.getByPlaceholderText('Character name'), { target: { value: 'Brog' } });
-    fireEvent.change(screen.getByLabelText(/Default HP/i), { target: { value: '25' } });
+    fireEvent.change(screen.getByLabelText(/^HP$/i), { target: { value: '25' } });
     fireEvent.change(screen.getByLabelText(/Init Mod/i), { target: { value: '3' } });
     fireEvent.click(screen.getByRole('button', { name: /Add Character/i }));
 

src/tests/Logs.characterization.test.js

@@ -20,7 +20,7 @@ async function addCharacterToEncounter(name = 'Hero', hp = 10) {
   await selectCampaignByName(`DS-${name}`);
 
   fireEvent.change(screen.getByPlaceholderText('Character name'), { target: { value: name } });
-  fireEvent.change(screen.getByLabelText(/Default HP/i), { target: { value: String(hp) } });
+  fireEvent.change(screen.getByLabelText(/^HP$/i), { target: { value: String(hp) } });
   fireEvent.click(screen.getByRole('button', { name: /Add Character/i }));
   await waitFor(() => findCalls('updateDoc', '/campaigns/').find(c => c.data.players?.length === 1));
   const charId = findCalls('updateDoc', '/campaigns/').find(c => c.data.players?.length === 1).data.players[0].id;