ca-pi: remove three dead exports in tools/src (architecture-003)

[SUaDtL]

Branch: feat/pi-support · Tribunal run 2026-07-17-pi-support-branch · Finding: findings/architecture/architecture-003.json
bridge.ts:406 resolvePythonExecutable, compaction.ts:453 compactionLimits, attestation.ts:4 export keyword. Rebuild bundles.