Release v0.1.4

Changes

• chore: bump version to v0.1.4
• feat(sdk)!: default_value accepts one value or a set; stored canonically as a JSON array (1 value = 1-element array)
• feat(sdk): main_cycle + decode_value; valid_values qualifies any type as main; mapping default_value encodes as JSON
• docs(sdk): default_value in valid_values format = cycle for any data type
• fix(sdk): drop device_id from controller_did_encounter_error — device-scoped problems belong on Device.last_error
• fix(sdk): make DriftReport/diff_specs generic over the key type (Mapping key invariance)
• Merge feat/controller-did-encounter-error into develop
• Merge feature/dev-cli into develop
• Merge review/param-mapping-audit into develop
• feat(sdk): source-agnostic spec-drift engine (canary/harvest refresher)
• refactor(sdk): widen next_main_parameter_value cycle to Sequence
• feat(sdk): enum main parameters cycle; next_main_parameter_value helper
• feat(sdk): add controller_did_encounter_error
• feat(sdk): add mired, ugm3, kwh, m3h parameter units
• feat(sdk): shared dev-time parameter-audit warnings
• feat(dev): interactive CLI to run an integration standalone (run_cli)