fix: use canonical npm bin path

[Phoenixrr2113]

Summary

• publish the CLI bin path in npm canonical form
• make package metadata and release validation enforce the canonical path
• prevent npm from silently normalizing the manifest during publication

TDD evidence

• Red: validator fixture using bin/codegraph-mcp.mjs failed because the validator required ./bin/codegraph-mcp.mjs (2 failed, 7 passed)
• Green: validator tests passed 9/9 and npm package tests passed 5/5

Verification

• release script tests: 45/45
• lint: 15/15 tasks
• typecheck: 19/19 tasks
• build: 20/20 tasks
• release:check: passed, including installed-consumer smoke and embedded database verification
• npm publish dry-run: exit 0, normalizationWarning false, no registry publication

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Project	Deployment	Actions	Updated (UTC)
v0-landing-page-build	Ready	Preview, v0	Aug 18, 2026 10:10pm