v5.3.3

Fixed

• mergeFullAgents now honors lean mode. rulebook update was still emitting a 6300-line AGENTS.md because mergeFullAgents (used by the update command) called generateModularAgents directly without checking agentsMode. Added an early-return that routes to generateLeanAgents when agentsMode === 'lean'. Verified end-to-end: rulebook update now produces a 211-line AGENTS.md.

• Hooks now resolve project root from stdin cwd, not $(pwd) / Get-Location. The previous behavior caused .rulebook/handoff/ to be created inside whatever sub-directory the user was editing instead of the actual project root. Fixed in both .sh and .ps1 variants of check-context-and-handoff and resume-from-handoff, in .claude/hooks/ and templates/hooks/. Falls back to CLAUDE_PROJECT_DIR then pwd if stdin doesn't include cwd.

• Lean AGENTS.md is now unconditional. generateFullAgents and mergeFullAgents always emit the condensed ~211-line template regardless of agentsMode or modular config values. Users with agentsMode: 'full' from older versions will get the lean output on next rulebook update. Dead legacy codepath (procedural 6k-line generator) removed.

• rulebook update no longer regenerates a 6k-line bloated AGENTS.md. Lean mode is now the default for agentsMode (config-manager.ts), and update.ts treats existing configs without agentsMode as lean. Existing projects upgrading to 5.3.2 will get the condensed 224-line AGENTS.md on next rulebook update.

• templates/core/AGENTS_LEAN.md replaced with the full 224-line condensed AGENTS.md (was a 25-line index that didn't match the root AGENTS.md). Includes Tier 1 prohibitions (rule #8: full-task-no-questions), Critical Rules, Task Management, Agent Automation, Memory, Knowledge Base, DAG, Quality Enforcement, Token Optimization, Ralph, Multi-Agent Teams, Workspace, Agent Delegation, Plans, Decision Records, with LANGUAGE_REFS/MODULE_REFS placeholders.

Changed

• MAX_CONTEXT_CHARS doubled from 800k → 1.6M (~200k → ~400k tokens) in .claude/hooks/check-context-and-handoff.sh and templates/hooks/check-context-and-handoff.sh. Handoff thresholds now match the larger context windows of current models.