feat: custom conditions per campaign

DM can add freeform custom conditions alongside built-ins. Persists to
campaign doc, survives across encounters, shared with display view.

Implementation:
- ParticipantManager subscribes campaign doc via useFirestoreDocument
- customConditions[] merged with built-in CONDITIONS at render
- Input field + Add button in conditions picker (Enter or click)
- Dedup case-insensitive vs built-ins + existing custom
- maxLength 40
- addCustomCondition writes to campaigns/{id}.customConditions
- Badge render: custom conditions show raw label (no emoji)
- DisplayView: same fallback render for custom ids
- toggleCondition unchanged (already accepts any string id)
- campaignId prop passed from EncounterManager -> ParticipantManager

243 tests green. Build clean.

TODO.md

@@ -45,7 +45,12 @@ Backlog of bugs + long-term items. Milestones live in REWORK_PLAN.md.
   Old single-counter broken (successes missing, treated saves as fails).
   Old data lost (user OK — feature didn't work). UI: green ✓ row + red ✕ row.
 
-### Custom condition field
+### Custom conditions field (DONE)
+- FIXED — per-campaign freeform conditions. Input field in picker → persists to
+  `campaigns/{id}.customConditions[]`. Merged with built-ins at render.
+  ParticipantManager subscribes campaign doc. DisplayView renders custom as
+  raw label. toggleCondition unchanged (any string id). Dedup case-insensitive.
+  Enter or button to add. maxLength 40.
 - Conditions hardcoded list. No way for DM to add custom.
 
 ### Test integrated timeouts

src/App.js

@@ -797,7 +797,7 @@ function CharacterManager({ campaignId, campaignCharacters }) {
 // PARTICIPANT MANAGER COMPONENT
 // ============================================================================
 
-function ParticipantManager({ encounter, encounterPath, campaignCharacters }) {
+function ParticipantManager({ encounter, encounterPath, campaignCharacters, campaignId }) {
   const [participantName, setParticipantName] = useState('');
   const [participantType, setParticipantType] = useState('monster');
   const [selectedCharacterId, setSelectedCharacterId] = useState('');
@@ -812,6 +812,17 @@ function ParticipantManager({ encounter, encounterPath, campaignCharacters }) {
   const [itemToDelete, setItemToDelete] = useState(null);
   const [lastRollDetails, setLastRollDetails] = useState(null);
   const [openConditionsId, setOpenConditionsId] = useState(null);
+  const [customConditionInput, setCustomConditionInput] = useState('');
+
+  // Per-campaign custom conditions (DM-added freeform strings).
+  const { data: campaignDoc } = useFirestoreDocument(campaignId ? getPath.campaign(campaignId) : null);
+  const customConditions = (campaignDoc && campaignDoc.customConditions) || [];
+  // Merged condition list: built-ins + custom. Custom = { id: label, label, emoji: '' }.
+  // id may contain spaces/emoji — toggleCondition stores raw string.
+  const allConditions = [
+    ...CONDITIONS,
+    ...customConditions.map(label => ({ id: label, label, emoji: '' })),
+  ];
 
   const participants = encounter.participants || [];
 
@@ -1078,8 +1089,8 @@ function ParticipantManager({ encounter, encounterPath, campaignCharacters }) {
     try {
       const { patch, log } = combatToggleCondition(encounter, participantId, conditionId);
       await storage.updateDoc(encounterPath, patch);
-      const cond = CONDITIONS.find(c => c.id === conditionId);
+      const cond = allConditions.find(c => c.id === conditionId);
-      const condLabel = cond ? `${cond.label} ${cond.emoji}` : conditionId;
+      const condLabel = cond ? `${cond.label} ${cond.emoji || ''}`.trim() : conditionId;
       logAction(log.message.replace(conditionId, condLabel), { encounterName: encounter.name }, {
         encounterPath,
         updates: log.undo,
@@ -1089,6 +1100,22 @@ function ParticipantManager({ encounter, encounterPath, campaignCharacters }) {
     }
   };
 
+  // Persist new freeform condition to campaign doc. Persists across encounters.
+  const addCustomCondition = async (label) => {
+    const trimmed = (label || '').trim();
+    if (!trimmed || !campaignId) return;
+    // dedupe against built-ins + existing custom (case-insensitive)
+    const exists = allConditions.some(c => c.label.toLowerCase() === trimmed.toLowerCase());
+    if (exists) { setCustomConditionInput(''); return; }
+    const next = [...customConditions, trimmed];
+    try {
+      await storage.updateDoc(getPath.campaign(campaignId), { customConditions: next });
+      setCustomConditionInput('');
+    } catch (err) {
+      // fall through silently
+    }
+  };
+
   const handleDragStart = (e, id) => {
     setDraggedItemId(id);
     e.dataTransfer.effectAllowed = 'move';
@@ -1426,7 +1453,16 @@ function ParticipantManager({ encounter, encounterPath, campaignCharacters }) {
                             >
                               {cond.emoji} {cond.label}
                             </span>
-                          ) : null;
+                          ) : (
+                            <span
+                              key={cId}
+                              className="inline-flex items-center gap-0.5 px-1.5 py-0.5 rounded-full bg-purple-900 border border-purple-600 text-xs text-purple-200 cursor-pointer hover:bg-purple-800"
+                              title={`Remove ${cId}`}
+                              onClick={() => toggleCondition(p.id, cId)}
+                            >
+                              {cId}
+                            </span>
+                          );
                         })}
                       </div>
                     )}
@@ -1436,7 +1472,7 @@ function ParticipantManager({ encounter, encounterPath, campaignCharacters }) {
                       <div className="mt-2 p-2 bg-stone-900 rounded-md border border-stone-600">
                         <p className="text-xs text-stone-400 mb-1 font-medium">Toggle Conditions</p>
                         <div className="flex flex-wrap gap-1">
-                          {CONDITIONS.map(cond => {
+                          {allConditions.map(cond => {
                             const active = (p.conditions || []).includes(cond.id);
                             return (
                               <button
@@ -1450,6 +1486,28 @@ function ParticipantManager({ encounter, encounterPath, campaignCharacters }) {
                             );
                           })}
                         </div>
+                        {/* Add custom condition (per-campaign, freeform string) */}
+                        <div className="mt-2 flex gap-1">
+                          <input
+                            type="text"
+                            value={customConditionInput}
+                            onChange={(e) => setCustomConditionInput(e.target.value)}
+                            onKeyDown={(e) => {
+                              if (e.key === 'Enter') { e.preventDefault(); addCustomCondition(customConditionInput); }
+                            }}
+                            placeholder="Add custom condition..."
+                            className="flex-grow px-2 py-1 text-xs rounded bg-stone-800 border border-stone-600 text-stone-200 placeholder-stone-500 focus:outline-none focus:border-amber-500"
+                            maxLength={40}
+                          />
+                          <button
+                            type="button"
+                            onClick={() => addCustomCondition(customConditionInput)}
+                            disabled={!customConditionInput.trim()}
+                            className="px-2 py-1 rounded text-xs bg-amber-700 border border-amber-500 text-white hover:bg-amber-600 disabled:opacity-40 disabled:cursor-not-allowed"
+                          >
+                            Add
+                          </button>
+                        </div>
                       </div>
                     )}
                   </div>
@@ -1960,6 +2018,7 @@ function EncounterManager({ campaignId, initialActiveEncounterId, campaignCharac
                   encounter={selectedEncounter}
                   encounterPath={getPath.encounter(campaignId, selectedEncounter.id)}
                   campaignCharacters={campaignCharacters}
+                  campaignId={campaignId}
                 />
               </div>
             </div>
@@ -2522,7 +2581,14 @@ function DisplayView() {
                         >
                           {cond.emoji} {cond.label}
                         </span>
-                      ) : null;
+                      ) : (
+                        <span
+                          key={cId}
+                          className="inline-flex items-center gap-1 px-2 py-0.5 rounded-full bg-purple-900 border border-purple-500 text-xs md:text-sm text-purple-200 font-medium"
+                        >
+                          {cId}
+                        </span>
+                      );
                     })}
                   </div>
                 )}