v1.10.47 — Hardened init against partial installs

Fixes

• Sentinel array validation: findSourceHelpersDir() now checks for all 4 required files (hook-handler.cjs, utils/telemetry.cjs, utils/monograph.cjs, utils/micro-agents.cjs) before accepting a helpers source directory — prevents silent detection of incomplete npm installs
• Recursive upgrade sync: executeUpgrade() now uses copyDirRecursive() for utils/ and handlers/ subdirectories — closes the regression where upgrade left subdirs absent
• .cjs extension fix: Generated stub require() paths corrected from .js → .cjs for session, router, memory helpers — eliminates module-not-found crash on fresh init
• Fallback filename fix: Internal fallback map updated to use .cjs extensions consistently with loader expectations
• Regression tests: tests/cli/init-helpers.test.mjs — verifies source integrity, post-init structure, and that hook-handler.cjs loads without CJS crash