Adds "[Demo] The Goblin Ambush (HP script)": a combat scene whose script
tells the AI the current HP and to tag damage/healing as [HP-N]/[HP+N];
the AI decides the amounts, the onOutput hook applies them to state.hp
(clamped 0..100), hides the tags, and flags death at 0. Showcases the
new left State drawer with live variables. Verified through the real
quickjs engine: a simulated attack drops HP, a potion heals (clamped),
a fatal blow sets state.dead.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01TEpWMjnfPqzZ13nPMoGhs5
Idempotent seeder inserts public, unowned demo scenarios from
backend/app/seed_data/*.json if a public scenario with the same title
is missing, so a fresh Neon database (and any clone) gets demo content
guests can play immediately. Ships two scenarios: the Sunken Crypt of
Vharos (all four script hooks) and Signal from the Derelict (sci-fi,
context-engine focused).
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01TEpWMjnfPqzZ13nPMoGhs5
