fix(cli): cli changes for account-scoped teams

[acslater00]

Summary

• refresh the embedded PowerSync schema and reflected SQLite surface to match the current control-plane contract
• update conversation create/update paths to use the current GraphQL contract and account-owned conversation model
• remove runtime dependence on workspace-shaped local conversation storage while keeping legacy compatibility where still needed
• fix warm-start onboarding by restoring user bootstrap state so cached-auth sessions can complete runtime init
• keep legacy policy-oriented status surfaces running against the new local schema by mapping deprecated summary fields to safe compatibility values
• add regression coverage for reflected schema expectations, conversation GraphQL inputs, onboarding completion, chat/runtime behavior, and uploader paths

Testing

• ./bin/sqlc generate
• env GOCACHE=/Users/adamc/src/tero/cli/.gocache GOMODCACHE=/Users/adamc/src/tero/cli/.gomodcache ./bin/go test ./internal/boundary/graphql ./internal/sqlite -count=1
• env GOCACHE=/Users/adamc/src/tero/cli/.gocache GOMODCACHE=/Users/adamc/src/tero/cli/.gomodcache ./bin/go build ./cmd/tero

Notes

• genqlient regeneration is still blocked by an unrelated schema/query mismatch in the GraphQL generation path, so the generated conversation input surface was patched directly to remove stale fields
• status bar summary reads still use legacy policy-shaped fields; this change keeps them non-breaking, but findings-native UI cleanup is still follow-up work
• .gocache/ and .gomodcache/ were added to .gitignore to avoid local build cache noise