KAI OS v0.1.82

Product hardening\n\n- Unified config failure recovery around kaios doctor --fix --dry-run ... so gate/verify summaries preview writes before suggesting repair commands.\n- Updated kaios.verify/v1 diagnosis.fixFirst to prefer the stable repair-project action for project config failures.\n- Kept kaios setup ... recovery commands in next for compatibility while making repair preview the first action.\n- Updated docs and smoke tests for missing and invalid config recovery paths.\n\n## Verification\n\n- ./gradlew test installDist distZip distTar --no-daemon\n- scripts/quickstart-smoke.sh\n- gate/verify invalid-config repair-preview smoke\n- YAML and diff whitespace checks