Clean up project documentation and constitution for post-MVP maturity

- CLAUDE.md: replace 32-line per-feature tech changelog with consolidated
  tech stack, add project structure and data/storage sections, remove stale
  Recent Changes
- README.md: rewrite for current feature set, fix bestiary description
  (import-based, not bundled), remove placeholder license section
- Constitution v2.2.0: remove unused Agent Boundary principle (MAJOR),
  add README and CLAUDE.md sync rules to Development Workflow (MINOR)

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

CLAUDE.md

@@ -5,7 +5,7 @@ This file provides guidance to Claude Code (claude.ai/code) when working with co
 ## Commands
 
 ```bash
-pnpm check              # Merge gate — must pass before every commit (knip + format + lint + typecheck + test)
+pnpm check              # Merge gate — must pass before every commit (knip + biome + typecheck + test + jscpd)
 pnpm knip               # Unused code detection (Knip)
 pnpm test               # Run all tests (Vitest)
 pnpm test:watch         # Tests in watch mode
@@ -27,11 +27,38 @@ apps/web (React 19 + Vite)  →  packages/application (use cases)  →  packages
 ```
 
 - **Domain** — Pure functions, no I/O, no framework imports. All state transitions are deterministic. Errors returned as values (`DomainError`), never thrown. Adapters may throw only for programmer errors.
-- **Application** — Orchestrates domain calls via port interfaces (e.g., `EncounterStore`). No business logic here.
-- **Web** — React adapter. Implements ports using hooks/state.
+- **Application** — Orchestrates domain calls via port interfaces (`EncounterStore`, `BestiarySourceCache`). No business logic here.
+- **Web** — React adapter. Implements ports using hooks/state. All UI components, routing, and user interaction live here.
 
 Layer boundaries are enforced by `scripts/check-layer-boundaries.mjs`, which runs as a Vitest test. Domain and application must never import from React, Vite, or upper layers.
 
+### Data & Storage
+
+- **localStorage** — encounter persistence (adapter layer, JSON serialization)
+- **IndexedDB** — bestiary source cache (`apps/web/src/adapters/bestiary-cache.ts`, via `idb` wrapper)
+- **`data/bestiary/index.json`** — pre-built search index for creature lookup, generated by `scripts/generate-bestiary-index.mjs`
+
+### Project Structure
+
+```
+apps/web/                  React app — components, hooks, adapters
+packages/domain/src/       Pure state transitions, types, validation
+packages/application/src/  Use cases, port interfaces
+data/bestiary/             Bestiary search index
+scripts/                   Build tooling (layer checks, index generation)
+specs/<feature>/           Feature specs (spec.md, plan.md, tasks.md)
+.specify/memory/           Project constitution
+```
+
+## Tech Stack
+
+- TypeScript 5.8 (strict mode, `verbatimModuleSyntax`)
+- React 19, Vite 6, Tailwind CSS v4
+- Lucide React (icons)
+- `idb` (IndexedDB wrapper for bestiary cache)
+- Biome 2.0 (formatting + linting), Knip (unused code), jscpd (copy-paste detection)
+- Vitest (testing), Lefthook (pre-commit hooks)
+
 ## Conventions
 
 - **Biome 2.0** for formatting and linting (no Prettier, no ESLint). Tab indentation, 80-char lines. Imports are auto-organized alphabetically.
@@ -50,40 +77,3 @@ The constitution (`.specify/memory/constitution.md`) governs all feature work:
 3. **Clarification-First** — Ask before making non-trivial assumptions.
 4. **MVP Baseline** — Say "MVP baseline does not include X", never permanent bans.
 5. **Every feature begins with a spec** — Spec → Plan → Tasks → Implementation.
-
-## Active Technologies
-- TypeScript 5.x (strict mode, verbatimModuleSyntax) + React 19, Vite (003-remove-combatant)
-- In-memory React state (local-first, single-user MVP) (003-remove-combatant)
-- TypeScript 5.x (project), Go binary via npm (Lefthook) + `lefthook` (npm devDependency) (006-pre-commit-gate)
-- TypeScript 5.x (strict mode, verbatimModuleSyntax) + Knip v5 (new), Biome 2.0, Vitest, Vite 6, React 19 (007-add-knip)
-- TypeScript 5.x (strict mode, verbatimModuleSyntax) + React 19, Vite 6, Biome 2.0, existing domain/application packages (008-persist-encounter)
-- Browser localStorage (adapter layer only) (008-persist-encounter)
-- TypeScript 5.x (strict mode, verbatimModuleSyntax) + React 19, Vite 6, Biome 2.0, Vites (009-combatant-hp)
-- TypeScript 5.8 (strict mode, verbatimModuleSyntax) + React 19, Vite 6, Tailwind CSS v4, shadcn/ui, Lucide React (icons) (010-ui-baseline)
-- N/A (no storage changes — localStorage persistence unchanged) (010-ui-baseline)
-- TypeScript 5.8 (strict mode, verbatimModuleSyntax) + React 19, Vite 6, Tailwind CSS v4, shadcn/ui-style components, Lucide React (icons) (011-quick-hp-input)
-- N/A (no storage changes -- existing localStorage persistence handles HP via `adjustHpUseCase`) (011-quick-hp-input)
-- N/A (no storage changes -- existing localStorage persistence unchanged) (012-turn-navigation)
-- N/A (no storage changes -- purely derived state, existing localStorage persistence unchanged) (013-hp-status-indicators)
-- TypeScript 5.8 (strict mode, verbatimModuleSyntax) + jscpd (new dev dependency), Lefthook (existing), Biome 2.0 (existing), Knip (existing) (015-add-jscpd-gate)
-- N/A (no storage changes) (015-add-jscpd-gate)
-- Browser localStorage (existing adapter, transparent JSON serialization) (016-combatant-ac)
-- TypeScript 5.8 (strict mode, verbatimModuleSyntax) + React 19, Vite 6, Tailwind CSS v4, Lucide React (icons) (017-combat-conditions)
-- N/A (no storage changes — existing localStorage persistence unchanged) (019-combatant-row-declutter)
-- TypeScript 5.8 (strict mode, verbatimModuleSyntax) + React 19, Tailwind CSS v4, Lucide React (icons) (020-fix-zero-hp-opacity)
-- Browser localStorage (existing adapter, extended for creatureId) (021-bestiary-statblock)
-- TypeScript 5.8 (strict mode, verbatimModuleSyntax) + React 19, Tailwind CSS v4 + React 19, Tailwind CSS v4, Vite 6 (022-fixed-layout-bars)
-- N/A (no storage changes -- purely presentational) (022-fixed-layout-bars)
-- Browser localStorage (existing adapter, updated to handle empty encounters) (023-clear-encounter)
-- N/A (no storage changes — purely presentational fix) (024-fix-hp-popover-overflow)
-- N/A (no storage changes — purely derived from existing bestiary data) (025-display-initiative)
-- TypeScript 5.8 (strict mode, verbatimModuleSyntax) + React 19, Tailwind CSS v4, Lucide React (icons), Vite 6 (026-roll-initiative)
-- N/A (no storage changes — existing localStorage persistence handles initiative via `setInitiativeUseCase`) (026-roll-initiative)
-- N/A (no storage changes — purely presentational) (027-ui-polish)
-- TypeScript 5.8 (strict mode, verbatimModuleSyntax) + React 19, Tailwind CSS v4, Vite 6 + Tailwind CSS v4 (CSS-native `@theme` theming), Lucide React (icons) (028-semantic-hover-tokens)
-- TypeScript 5.8 (strict mode, verbatimModuleSyntax) + React 19, Vite 6, Tailwind CSS v4, Lucide React (icons), idb (IndexedDB wrapper) (029-on-demand-bestiary)
-- IndexedDB for cached source data (new); localStorage for encounter persistence (existing, unchanged) (029-on-demand-bestiary)
-- IndexedDB for cached source data (existing via `bestiary-cache.ts`); localStorage for encounter persistence (existing, unchanged) (030-bulk-import-sources)
-
-## Recent Changes
-- 003-remove-combatant: Added TypeScript 5.x (strict mode, verbatimModuleSyntax) + React 19, Vite