Track project prompt and state files

.gitignore

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 .idea/
+!.idea/START_PROMPT.md
+!.idea/PROJECT_STATE.md
 .DS_Store
 __pycache__/
 *.pyc

.idea/PROJECT_STATE.md

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+# Project State: HA KNX Bridge
+
+## Project Description
+HA KNX Bridge is a Home Assistant custom integration that mirrors Home Assistant entities
+to KNX group addresses and accepts KNX actions to control Home Assistant entities.
+It is installed via HACS and configured through the Home Assistant UI (config flow).
+The integration should:
+- Reuse an existing Home Assistant KNX integration entry when available.
+- Allow users to add "Ports" that bind a single HA entity to KNX group addresses.
+- Auto-select appropriate KNX DPTs and request only the group addresses needed.
+- Ignore missing/empty group addresses without errors.
+
+Target compatibility: Home Assistant 2025.12 with forward compatibility to 2026.2.
+
+Project rules:
+- Keep `README.md` updated for user-relevant changes after each new version.
+- Maintain `CHANGELOG.md` with newest entries at the top.
+- Releases are created only when explicitly requested.
+- Version number must match everywhere it is referenced (manifest, changelog, README, HACS if used).
+
+## Current State (as of 2026-02-13)
+Completed:
+- Repo initialized with `main` branch and pushed to GitHub.
+- HACS metadata (`hacs.json`) and base integration scaffold created.
+- Config flow created with subentries ("Ports") for:
+  - Binary Sensor
+  - Cover
+- KNX group address validation and normalization in subentry flows.
+- Options flow skeleton added (no options yet).
+- `bcs.yaml` metadata file added for BCS store listing.
+- Bridge manager implements:
+  - Binary sensor state -> KNX send (DPT 1)
+  - Cover KNX incoming commands -> HA services
+  - Cover HA state -> KNX percent updates (DPT 5.001)
+- README includes initial DPT mapping and roadmap.
+- Project version set to 0.0.2 and `CHANGELOG.md` maintained.
+
+Files created:
+- `custom_components/ha_knx_bridge/__init__.py`
+- `custom_components/ha_knx_bridge/bridge.py`
+- `custom_components/ha_knx_bridge/config_flow.py`
+- `custom_components/ha_knx_bridge/const.py`
+- `custom_components/ha_knx_bridge/manifest.json`
+- `custom_components/ha_knx_bridge/strings.json`
+- `hacs.json`
+- `README.md`
+- `CHANGELOG.md`
+- `.gitignore`
+
+Open items / next steps:
+- Validate and format KNX group address inputs in config flow.
+- Add optional option flow for future settings.
+- Expand entity coverage (light, switch, sensor, climate).
+- Add tests (config flow, KNX mapping).
+- Improve DPT auto-selection logic per entity features.

.idea/START_PROMPT.md

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+# Start Prompt (Use for Every New Chat)
+
+You are working on the `HA-KNX-Bridge` project.
+
+Required steps at the start of every new chat:
+1. Read `.idea/PROJECT_STATE.md` to understand the goal and current status.
+2. Scan the repository for recent code changes relevant to the request.
+3. If you make changes, update `.idea/PROJECT_STATE.md` to reflect the new state and date.
+
+Constraints:
+- Keep the project description and state accurate and concise.
+- Always write an explicit date (YYYY-MM-DD) when updating the Current State section.
+- Do not invent progress; only record what is verified in the repo.
+- After any user-relevant change and version bump, update `README.md`.
+- Maintain `CHANGELOG.md` with newest entries at the top, format:
+  - Version number
+  - Date (YYYY-MM-DD)
+  - Bullet list of changes
+- Create releases only when explicitly requested.
+- Keep the version number consistent in all files where it appears.