fix(package): isolate and release the Worker tool loop

[drewstone]

Summary

• publish @tangle-network/agent-runtime@0.109.1
• move runToolLoop and streamToolLoop from the broad package root to @tangle-network/agent-runtime/tool-loop
• keep the new entry free of static external imports, including literal dynamic imports
• bundle and execute the packed entry in a real Worker runtime without Node compatibility
• update the generated API reference and package checks

This intentionally removes the two functions and their types from the root export. The active product consumer is Agent App, which will move to the narrow subpath after this release.

Proof

• full tests: 1,856 passed, 6 live-only skipped, 0 failed
• typecheck: source and examples passed
• package: publint, package types, packed consumer, and all public subpaths passed
• Worker: packed package bundled and executed one tool call with Wrangler and Miniflare, without Node compatibility
• docs: generated API and freshness checks passed
• lint: 502 files passed
• production audit: 0 known vulnerabilities
• merge check: git merge-tree --write-tree origin/main HEAD passed

[tangletools]

✅ Auto-approved drewstone PR — ca7dde93

This PR was opened by the trusted drewstone account.
The full PR reviewer audit still runs separately and will publish findings if it detects issues.

_{tangletools · auto-approval · reason: drewstone_author · 2026-07-29T02:22:45Z}