feat: matter/energy/diff/iot/completeness + climate & expose (v0.6.0)

Completes the roadmap. The tool now validates, repairs, generates
(HA/ETS/handover/IoT), diffs, grades and drafts acceptance protocols —
all design-time & read-only.

B-tier:
- B2 climate-correctness review note (controller/operation modes, setpoint
  shift cmd+state, mode-without-state flag) in generate_ha.py
- B3 semantic project diff (diffproj.py; diff_projects / diff_loaded)
- B4 per-function acceptance test protocol (advanced.py; generate_test_protocol)
- B5 Matter readiness (advanced.py; check_matter)
- B6 metering/energy DPT check + PV/battery/EVSE scaffold (advanced.py; check_energy)

C-tier:
- C1 KNX IoT Turtle/RDF export (iot.py; generate_knx_iot)
- C2 naming-hygiene suggestions (advanced.py; suggest_names)
- C3 as-built completeness grader (advanced.py; grade_completeness)

A-tier quick wins:
- A5 Areas/voice UI-only note; A6 time/date DPT-19.001 expose block (generate_ha.py)

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

pyproject.toml

@@ -1,6 +1,6 @@
 [project]
 name = "nickol-knx-mcp"
-version = "0.5.0"
+version = "0.6.0"
 description = "Design-time KNX/ETS6 project assistant as an MCP server (parse .knxproj, validate, generate HA YAML + ETS CSV/XML). No live bus access."
 readme = "README.md"
 requires-python = ">=3.10"