Add adapter-owned budget observations

[arach]

Summary

• add protocol/runtime budget usage and quota snapshot records
• route observed budget data through adapter-owned Codex and Claude Code readers
• persist adapter budget observations from endpoint metadata with Codex quota windows and Claude usage-only coverage

Verification

• npm --prefix packages/agent-sessions run test
• npm --prefix packages/agent-sessions run check
• npm --prefix packages/protocol run check
• npm --prefix packages/runtime run check
• bun test packages/agent-sessions/src/adapters/budget-observations/budget-observations.test.ts packages/agent-sessions/src/history.test.ts packages/runtime/src/sqlite-store.test.ts packages/runtime/src/codex-app-server.test.ts

[vercel]

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1 Skipped Deployment

Project	Deployment	Actions	Updated (UTC)
openscout	Skipped		Jun 4, 2026 2:50am