Fix Claude hook bootstrap execution and align docs with token-optimizer

[aayushostwal]

Summary

• fix Claude/Codex model-router hook entrypoints to run as executable hook commands
• add shared scripts/run-model-router-hook.js that parses hook stdin payloads and invokes the router
• ensure hook files are executable and add regression checks
• update README to remove stale agents links and replace token-saving with token-optimizer
• extend bootstrap/model-router tests for new bootstrap instruction and real hook-command execution

Root cause

The session-start/user-prompt-submit/pre-tool-use model-router hook files were non-executable module stubs, so Claude hook command execution did not run bootstrap logic and ~/.claude/CLAUDE.md was not updated.

Validation

• npm test

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Project	Deployment	Actions	Updated (UTC)
nexus	Ready	Preview, Comment	May 14, 2026 5:22am