fix: custom conditions apply on add; correct server WS env docs

Custom conditions (per-campaign freeform) previously only persisted to the
campaign palette — Add button did NOT apply them to the targeted participant,
and badges rendered via CONDITIONS (missing custom ids) so applied custom
conditions did not display. Now:

- addCustomCondition(label, participantId) persists to palette AND toggles
  onto the participant in one step. Enter + Add button both pass p.id.
- Admin badge lookup uses allConditions (built-ins + custom), not CONDITIONS.

Shared contract: toggleCondition accepts ANY string. Prove it in tests:
- turn.combat.test.js adds CUSTOM_CONDITIONS ('hexed','rager',
  'marked_for_death','🛡️blessed') to the seeded queue + random pool, asserts
  condition-not-string invariant, and a dedicated add/remove round-trip test.
- replay-combat.js mirrors the same CUSTOM_CONDITIONS through the live backend.

Server-mode docs/env: REACT_APP_BACKEND_WS (stale pre-rename) -> correct
REACT_APP_BACKEND_REALTIME_URL=ws://.../ws in README, env.example,
docker/Dockerfile (STORAGE=ws -> server). DEVELOPMENT.md + scripts/README.md
now point to ./scripts/dev-start.sh as the primary dev entrypoint.

133 shared tests green.

README.md

@@ -247,15 +247,22 @@ docker compose -f docker/docker-compose.yml up --build
 ```
 This serves the app at `http://localhost:8080` (override with `PORT`), proxies `/api` and `/ws` to the backend, and persists the SQLite database in a named Docker volume. Override the Firestore-style app-id namespace with `TRACKER_APP_ID` if needed.
 
-**Local dev (backend + frontend separately):**
+**Local dev (recommended):**
 ```bash
 npm install                # installs root, server/, and shared/ workspaces
-npm run server:dev         # starts backend on :4001 (SQLite at server/data/tracker.sqlite)
+./scripts/dev-start.sh     # backend :4001 + frontend :3999, server mode
+./scripts/dev-stop.sh      # stop both
+```
+
+**Manual (fallback):**
+```bash
+npm install
+npm run server:dev         # starts backend on :4001 (SQLite at data/tracker.sqlite)
 
 # in another terminal:
-REACT_APP_STORAGE=ws \
+REACT_APP_STORAGE=server \
 REACT_APP_BACKEND_URL=http://127.0.0.1:4001 \
-REACT_APP_BACKEND_WS=ws://127.0.0.1:4001/ws \
+REACT_APP_BACKEND_REALTIME_URL=ws://127.0.0.1:4001/ws \
 npm start
 ```