v5.3.1

Changed — Context optimization & rule template normalization

• AGENTS.md condensed from 6641 → 224 lines (211KB → 11KB, ~95% reduction). Removed extensive duplication (TypeScript Rules x2, DAG x2, Quality Enforcement x2, Task Management x2, Documentation x2, Agent Automation x2, embedded legacy CLAUDE.md x2). All base directives preserved — Tier 1 prohibitions, task workflow, quality gates, memory, knowledge base, Ralph, multi-agent, workspace, agent delegation. Detailed specs still available in /.rulebook/specs/.
• CLAUDE.md @imports removed: No longer auto-imports AGENTS.md, AGENTS.override.md, STATE.md, PLANS.md. These are now read on demand to save context. CLAUDE.md trimmed to ~28 lines containing only the critical rules pointer.
• AGENTS.override.md cleaned: Removed the embedded legacy v5.2 CLAUDE.md content (~25KB). Override file is now ~44 lines focused on project-specific directives.
• Total auto-loaded context: ~250KB → ~1.4KB at session start.

Added — full-task-no-questions always-on rule

• New templates/rules/full-task-no-questions.md shipped as an always-on rule. Mandates end-to-end task execution in a single turn — no mid-task confirmation prompts, no "should I proceed?" check-ins. Auto-installed on init/update for all projects.

Removed

• 8 redundant local .claude/rules/ files in this repo only — no-deferred, no-shortcuts, follow-task-sequence, research-first, sequential-editing, fail-twice-escalate, session-workflow, knowledge-base-usage. These are now covered by the lean AGENTS.md. Templates remain in templates/rules/ and are still installed by the canonical rule engine for new projects via rulebook init (Tier 1 + Tier 2 multi-tool projection).

Documentation

• Complete README rewrite (974 → 354 lines, 63% reduction). Removed duplicated troubleshooting, per-version changelog summaries, wrong MCP tool counts, "NEW in vX" labels. New structure focuses on Quick Start, Core Features, MCP Server (40+ tools), CLI Reference, and Supported Stack.