v0.5.0 — repair-suggestion engine

From validator to repairer. Previous releases flagged problems in a .knxproj; this one starts proposing the fix. The headline is a repair-suggestion engine that turns each finding into a concrete, reviewable change, alongside two new detectors for gaps that silently break the Home Assistant layer.

Added

• B1 — repair-suggestion engine (repair.py, new module; new MCP tool suggest_repairs). For each finding it proposes a concrete fix rather than only naming the problem: infer a DPT for a group address that has none, correct a suspect sub-DPT, synthesise a status/feedback GA in a free address slot, or add an absolute-brightness GA for a relative-only dimmer. Suggestions only — a human reviews them, and accepted new GAs feed generate_ets_group_addresses; the server never writes to ETS or the bus. On a real 3646-GA project it produced 145 proposals: 32 set-DPT, 1 change-DPT, and 112 synthesised status GAs.
• A2 — relative-only-dimming detector (analyze.py, relative_only_dimming finding). A 3.007 relative dimmer with no 5.001 absolute-brightness GA in its zone is flagged, because Home Assistant cannot set a brightness level from relative dimming alone.
• A3 — cover invert / travel-time surfacing (generate_ha.py). The cover review reason is now verify_cover_invert and carries a note listing the actuator-dependent flags that are not in the .knxproj (invert_position / invert_updown / invert_angle, travelling_time_up / travelling_time_down), plus a warning when a cover's position lacks a state address.

Full changelog: https://github.com/NickoScope/nickol-knx-mcp/blob/main/CHANGELOG.md