fork of prime agent with changes i want but are not upstreamable probqbly (and some fixes)

fix(ai,coding-agent): make pi-ai browser-safe and move OAuth runtime exports master

- add browser smoke bundling check to root check + pre-commit - lazy-load Bedrock provider registration to avoid browser graph traversal - remove top-level OAuth runtime exports from @mariozechner/pi-ai - add @mariozechner/pi-ai/oauth subpath export and update coding-agent imports - move proxy dispatcher init to coding-agent CLI (Node-only) - document Bedrock/OAuth browser limitations closes #1814