readme updated with command to run tests in docker and changelog update

Author: Leon-Sander

README.md

@@ -125,6 +125,12 @@ pip install -r requirements-dev.txt
 pytest
 ```
 
+Or run it inside the app container (no local Python setup, matches the CI environment):
+
+```bash
+docker compose -f docker-compose_without_ollama.yml run --rm app sh -c "pip install --no-cache-dir -q pytest && pytest"
+```
+
 CI runs the suite on Ubuntu and Windows. See [TESTING.md](./TESTING.md) for the philosophy and what is deliberately not tested.
 
 ## Roadmap
@@ -137,6 +143,7 @@ CI runs the suite on Ubuntu and Windows. See [TESTING.md](./TESTING.md) for the
 <details>
 <summary>Changelog (highlights)</summary>
 
+- **2026-07** (v2.6.0): Contract-level test suite (21 tests) plus GitHub Actions CI on Ubuntu and Windows; moved all source into `src/` for a cleaner root. Breaking: run commands are now `streamlit run src/app.py`.
 - **2025-05** (v2.5.0): file upload via the chat bar.
 - **2024-09**: Model serving moved to the Ollama API; OpenAI API added.
 - **2024-08**: Docker Compose added.

TESTING.md

@@ -1,6 +1,6 @@
 # Testing
 
-This repo has a small, deliberate test suite: **20 contract tests** over the parts of the code whose behavior is stable by design. It is meant to stay cheap to maintain — including for forks.
+This repo has a small, deliberate test suite: **21 contract tests** over the parts of the code whose behavior is stable by design. It is meant to stay cheap to maintain — including for forks.
 
 ## Philosophy: contracts, not structure
 
@@ -16,10 +16,12 @@ A few places accept **medium churn** deliberately, each documented inline where
 
 | File | Contracts |
 |------|-----------|
-| `tests/test_database_operations.py` (9) | message roundtrips (text + binary), LLM-context feed ordering/filtering, per-session delete isolation, session id listing, settings read-through defaults + persistence, restart durability |
+| `tests/test_database_operations.py` (10) | message roundtrips (text + binary), LLM-context feed ordering/filtering, per-session delete isolation, session id listing, settings read-through defaults + persistence, restart durability |
 | `tests/test_utils.py` (3) | base64/data-URL wire format, `/command` dispatch, config save/load roundtrip |
 | `tests/test_chat_api_handler.py` (8) | endpoint routing (ollama/openai/unknown), request bodies + auth headers, image wire formats (Ollama bare-b64 vs OpenAI data URL), RAG context stuffing, error-shape handling (string vs nested object) |
 
+Counts are executed test cases, not test functions: `test_database_operations.py` has 9 test functions but one is parametrized over `["image", "audio"]`, so it runs 10 cases — 21 in total.
+
 ## What deliberately stays untested (and why)
 
 - **UI structure and CSS** (`app.py`, `html_templates.py`) — Streamlit class names churn every release; tests would break without any behavior change.