feat: bootstrap design kit and vaporwave demo baseline

kit/docs/bible-skeleton/architecture/api-surface.md

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+# API Surface
+
+Document all HTTP endpoints and UI routes that are part of the active contract.
+
+## Rules
+
+- Keep request/response shapes explicit.
+- Record compatibility aliases and deprecations.
+- Update this file when route behavior changes.
+

kit/docs/bible-skeleton/architecture/runtime-flows.md

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+# Runtime Flows
+
+Document the critical runtime flows and failure invariants.
+
+Recommended sections:
+
+- Startup flow
+- Request handling flow
+- Background tasks
+- Failure / retry / cancellation behavior
+

kit/docs/bible-skeleton/architecture/system-overview.md

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+# System Overview
+
+## Product
+
+Describe the product in one paragraph.
+
+## Active Scope
+
+- List current in-scope modules/features
+- List user-visible surfaces
+- List operational responsibilities
+
+## Explicitly Removed / Out of Scope
+
+- List legacy or excluded modules to avoid accidental restoration
+
+## Runtime Composition
+
+- HTTP server package(s)
+- Domain/service orchestration
+- Persistence layer(s)
+- Migrations / background workers (if any)
+
+## Local Execution
+
+- `make run`
+- `go run ./cmd/<binary>`
+
+## Verification
+
+- `go test ./...`
+

kit/docs/bible-skeleton/architecture/ui-information-architecture.md

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+# UI Information Architecture
+
+Document page structure, required section order, UI interaction contracts, and list/filter/
+pagination behavior.
+
+Use explicit route names and action contracts so AI agents can implement changes consistently.
+