chore: import upstream snapshot with attribution

examples/showcases/banking/.env.example

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+# Required (OSS + Intelligence modes)
+OPENAI_API_KEY=
+
+# ── License (unlocks paid Intelligence features such as durable memory) ──────
+# COPILOTKIT_LICENSE_TOKEN is required for either path below; pick ONE.
+#
+# MANAGED Intelligence (hosted — the eventual target for this demo):
+#   Use a CopilotKit-ISSUED token (your account team, or `copilotkit license
+#   -n banking-demo`) and point the INTELLIGENCE_* endpoints below at the managed
+#   stack. Do NOT set BAKED_LICENSE_KEYS_JSON — managed/official images bake the
+#   master public key as the root of trust and ignore a runtime baked key.
+#
+# SELF-HOSTED local dev (current): a locally-built Intelligence stack gates
+#   memory behind a signed offline license. Generate one with
+#   `pnpm mint-dev-license --write` (needs the private Intelligence source; see
+#   scripts/mint-dev-license.mjs) — it fills in the three vars below for you.
+COPILOTKIT_LICENSE_TOKEN=
+# Self-hosted only — the trusted key that signed the dev license above.
+# Leave UNSET for managed Intelligence.
+# BAKED_LICENSE_KEYS_JSON=
+# Self-hosted only — main renamed the deployment-mode env (underscore value).
+# INTELLIGENCE_DEPLOYMENT_MODE=self_hosted
+
+# Intelligence (memory) mode — set all three to enable durable cross-thread learning.
+# Ports/key match the vendored docker-compose.yml (see docs/superpowers/specs/2026-06-26-stack-decision.md).
+INTELLIGENCE_API_URL=http://localhost:7050
+INTELLIGENCE_GATEWAY_WS_URL=ws://localhost:7053
+INTELLIGENCE_API_KEY=cpk_sPRVSEED_seed0privat0longtoken00
+
+# Leave INTELLIGENCE_USER_ID UNPINNED for the interactive demo so the sidebar
+# user switcher drives memory scope (Alex -> jordan-beamson, Maya -> morgan-fluxx;
+# see src/lib/intelligence/user-id.ts). Pin it only for a single-identity run
+# (CI/e2e already pins it in playwright.config.ts). Both survivors must map to a
+# SEEDED backend id — non-seeded ids 403 against the Intelligence stack.
+# INTELLIGENCE_USER_ID=jordan-beamson
+# INTELLIGENCE_USER_NAME=Jordan Beamson
+
+# Glass Engine (advanced inspector). Unset = absent (public-host default).
+# Set to "true" for FDE/sales/conference deployments to expose the left-rail
+# telescope toggle. Distinct from the presenter's per-session on/off toggle.
+GLASS_ENGINE_AVAILABLE=
+
+# Presenter/booth reset button (left sidebar). Unset = hidden AND the
+# /api/v1/dev/reset endpoint is disabled (403). Set to "true" for
+# FDE/sales/conference deployments so a presenter can reset demo state
+# (re-seed transactions + forget all durable memories) without curl.
+PRESENTER_RESET_ENABLED=
+
+# Test-only: point the agent LLM at aimock for the deterministic E2E proof.
+# Leave unset in normal runs. (See e2e/memory-learning.spec.ts.)
+# OPENAI_BASE_URL=http://localhost:7099/v1